4 This is a high-level summary of the most important changes.
5 For a full list of changes, see the [git commit log][log] and
6 pick the appropriate release branch.
8 [log]: https://github.com/openssl/openssl/commits/
13 - [OpenSSL 3.0](#openssl-30)
14 - [OpenSSL 1.1.1](#openssl-111)
15 - [OpenSSL 1.1.0](#openssl-110)
16 - [OpenSSL 1.0.2](#openssl-102)
17 - [OpenSSL 1.0.1](#openssl-101)
18 - [OpenSSL 1.0.0](#openssl-100)
19 - [OpenSSL 0.9.x](#openssl-09x)
24 ### Changes between 1.1.1 and 3.0 [xx XXX xxxx]
26 * Deprecated all the libcrypto and libssl error string loading
27 functions: ERR_load_ASN1_strings(), ERR_load_ASYNC_strings(),
28 ERR_load_BIO_strings(), ERR_load_BN_strings(), ERR_load_BUF_strings(),
29 ERR_load_CMS_strings(), ERR_load_COMP_strings(), ERR_load_CONF_strings(),
30 ERR_load_CRYPTO_strings(), ERR_load_CT_strings(), ERR_load_DH_strings(),
31 ERR_load_DSA_strings(), ERR_load_EC_strings(), ERR_load_ENGINE_strings(),
32 ERR_load_ERR_strings(), ERR_load_EVP_strings(), ERR_load_KDF_strings(),
33 ERR_load_OBJ_strings(), ERR_load_OCSP_strings(), ERR_load_PEM_strings(),
34 ERR_load_PKCS12_strings(), ERR_load_PKCS7_strings(), ERR_load_RAND_strings(),
35 ERR_load_RSA_strings(), ERR_load_OSSL_STORE_strings(), ERR_load_TS_strings(),
36 ERR_load_UI_strings(), ERR_load_X509_strings(), ERR_load_X509V3_strings().
38 Calling these functions is not necessary since OpenSSL 1.1.0, as OpenSSL
39 now loads error strings automatically.
43 * The functions SSL_CTX_set_tmp_dh_callback and SSL_set_tmp_dh_callback, as
44 well as the macros SSL_CTX_set_tmp_dh() and SSL_set_tmp_dh() have been
45 deprecated. These are used to set the Diffie-Hellman (DH) parameters that
46 are to be used by servers requiring ephemeral DH keys. Instead applications
47 should consider using the built-in DH parameters that are available by
48 calling SSL_CTX_set_dh_auto() or SSL_set_dh_auto(). If custom parameters are
49 necessary then applications can use the alternative functions
50 SSL_CTX_set0_tmp_dh_pkey() and SSL_set0_tmp_dh_pkey(). There is no direct
51 replacement for the "callback" functions. The callback was originally useful
52 in order to have different parameters for export and non-export ciphersuites.
53 Export ciphersuites are no longer supported by OpenSSL. Use of the callback
54 functions should be replaced by one of the other methods described above.
58 * The -crypt option to the passwd command line tool has been removed.
62 * The -C option to the x509, dhparam, dsaparam, and ecparam commands
67 * Add support for AES Key Wrap inverse ciphers to the EVP layer.
69 "AES-128-WRAP-INV", "AES-192-WRAP-INV", "AES-256-WRAP-INV",
70 "AES-128-WRAP-PAD-INV", "AES-192-WRAP-PAD-INV" and "AES-256-WRAP-PAD-INV".
71 The inverse ciphers use AES decryption for wrapping, and
72 AES encryption for unwrapping.
76 * Deprecated EVP_PKEY_set1_tls_encodedpoint() and
77 EVP_PKEY_get1_tls_encodedpoint(). These functions were previously used by
78 libssl to set or get an encoded public key in/from an EVP_PKEY object. With
79 OpenSSL 3.0 these are replaced by the more generic functions
80 EVP_PKEY_set1_encoded_public_key() and EVP_PKEY_get1_encoded_public_key().
81 The old versions have been converted to deprecated macros that just call the
86 * The security callback, which can be customised by application code, supports
87 the security operation SSL_SECOP_TMP_DH. This is defined to take an EVP_PKEY
88 in the "other" parameter. In most places this is what is passed. All these
89 places occur server side. However there was one client side call of this
90 security operation and it passed a DH object instead. This is incorrect
91 according to the definition of SSL_SECOP_TMP_DH, and is inconsistent with all
92 of the other locations. Therefore this client side call has been changed to
93 pass an EVP_PKEY instead.
97 * Add PKCS7_get_octet_string() and PKCS7_type_is_other() to the public
98 interface. Their functionality remains unchanged.
102 * Added new option for 'openssl list', '-providers', which will display the
103 list of loaded providers, their names, version and status. It optionally
104 displays their gettable parameters.
108 * Deprecated EVP_PKEY_set_alias_type(). This function was previously
109 needed as a workaround to recognise SM2 keys. With OpenSSL 3.0, this key
110 type is internally recognised so the workaround is no longer needed.
112 Functionality is still retained as it is, but will only work with
113 EVP_PKEYs with a legacy internal key.
117 * Deprecated EVP_PKEY_CTX_set_rsa_keygen_pubexp() & introduced
118 EVP_PKEY_CTX_set1_rsa_keygen_pubexp(), which is now preferred.
122 * Changed all "STACK" functions to be macros instead of inline functions. Macro
123 parameters are still checked for type safety at compile time via helper
128 * Remove the RAND_DRBG API
130 The RAND_DRBG API did not fit well into the new provider concept as
131 implemented by EVP_RAND and EVP_RAND_CTX. The main reason is that the
132 RAND_DRBG API is a mixture of 'front end' and 'back end' API calls
133 and some of its API calls are rather low-level. This holds in particular
134 for the callback mechanism (RAND_DRBG_set_callbacks()).
136 Adding a compatibility layer to continue supporting the RAND_DRBG API as
137 a legacy API for a regular deprecation period turned out to come at the
138 price of complicating the new provider API unnecessarily. Since the
139 RAND_DRBG API exists only since version 1.1.1, it was decided by the OMC
142 *Paul Dale and Matthias St. Pierre*
144 * Allow SSL_set1_host() and SSL_add1_host() to take IP literal addresses
145 as well as actual hostnames.
149 * The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
150 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
151 conversely, silently ignore DTLS protocol version bounds when configuring
152 TLS-based contexts. The commands can be repeated to set bounds of both
153 types. The same applies with the corresponding "min_protocol" and
154 "max_protocol" command-line switches, in case some application uses both TLS
157 SSL_CTX instances that are created for a fixed protocol version (e.g.
158 TLSv1_server_method()) also silently ignore version bounds. Previously
159 attempts to apply bounds to these protocol versions would result in an
160 error. Now only the "version-flexible" SSL_CTX instances are subject to
161 limits in configuration files in command-line options.
165 * Deprecated the `ENGINE` API. Engines should be replaced with providers
170 * Reworked the recorded ERR codes to make better space for system errors.
171 To distinguish them, the macro `ERR_SYSTEM_ERROR()` indicates if the
172 given code is a system error (true) or an OpenSSL error (false).
176 * Reworked the test perl framework to better allow parallel testing.
178 *Nicola Tuveri and David von Oheimb*
180 * Added ciphertext stealing algorithms AES-128-CBC-CTS, AES-192-CBC-CTS and
181 AES-256-CBC-CTS to the providers. CS1, CS2 and CS3 variants are supported.
185 * 'Configure' has been changed to figure out the configuration target if
186 none is given on the command line. Consequently, the 'config' script is
187 now only a mere wrapper. All documentation is changed to only mention
190 *Rich Salz and Richard Levitte*
192 * Added a library context `OSSL_LIB_CTX` that applications as well as
193 other libraries can use to form a separate context within which
194 libcrypto operations are performed.
196 There are two ways this can be used:
198 - Directly, by passing a library context to functions that take
199 such an argument, such as `EVP_CIPHER_fetch` and similar algorithm
201 - Indirectly, by creating a new library context and then assigning
202 it as the new default, with `OSSL_LIB_CTX_set0_default`.
204 All public OpenSSL functions that take an `OSSL_LIB_CTX` pointer,
205 apart from the functions directly related to `OSSL_LIB_CTX`, accept
206 NULL to indicate that the default library context should be used.
208 Library code that changes the default library context using
209 `OSSL_LIB_CTX_set0_default` should take care to restore it with a
210 second call before returning to the caller.
212 _(Note: the library context was initially called `OPENSSL_CTX` and
213 renamed to `OSSL_LIB_CTX` in version 3.0.0 alpha7.)_
217 * Handshake now fails if Extended Master Secret extension is dropped
222 * Dropped interactive mode from the 'openssl' program. From now on,
223 the `openssl` command without arguments is equivalent to `openssl
228 * Renamed EVP_PKEY_cmp() to EVP_PKEY_eq() and
229 EVP_PKEY_cmp_parameters() to EVP_PKEY_parameters_eq().
230 While the old function names have been retained for backward compatibility
231 they should not be used in new developments
232 because their return values are confusing: Unlike other `_cmp()` functions
233 they do not return 0 in case their arguments are equal.
237 * Deprecated EC_METHOD_get_field_type(). Applications should switch to
238 EC_GROUP_get_field_type().
242 * Deprecated EC_GFp_simple_method(), EC_GFp_mont_method(),
243 EC_GF2m_simple_method(), EC_GFp_nist_method(), EC_GFp_nistp224_method()
244 EC_GFp_nistp256_method(), and EC_GFp_nistp521_method().
245 Applications should rely on the library automatically assigning a suitable
246 EC_METHOD internally upon EC_GROUP construction.
250 * Deprecated EC_GROUP_new(), EC_GROUP_method_of(), and EC_POINT_method_of().
251 EC_METHOD is now an internal-only concept and a suitable EC_METHOD is
252 assigned internally without application intervention.
253 Users of EC_GROUP_new() should switch to a different suitable constructor.
257 * Add CAdES-BES signature verification support, mostly derived
258 from ESSCertIDv2 TS (RFC 5816) contribution by Marek Klein.
260 *Filipe Raimundo da Silva*
262 * Add CAdES-BES signature scheme and attributes support (RFC 5126) to CMS API.
266 * Deprecated EC_POINT_make_affine() and EC_POINTs_make_affine(). These
267 functions are not widely used and now OpenSSL automatically perform this
268 conversion when needed.
272 * Deprecated EC_GROUP_precompute_mult(), EC_GROUP_have_precompute_mult(), and
273 EC_KEY_precompute_mult(). These functions are not widely used and
274 applications should instead switch to named curves which OpenSSL has
275 hardcoded lookup tables for.
279 * Deprecated EC_POINTs_mul(). This function is not widely used and applications
280 should instead use the L<EC_POINT_mul(3)> function.
284 * Removed FIPS_mode() and FIPS_mode_set(). These functions are legacy API's
285 that are not applicable to the new provider model. Applications should
286 instead use EVP_default_properties_is_fips_enabled() and
287 EVP_default_properties_enable_fips().
291 * The SSL option SSL_OP_IGNORE_UNEXPECTED_EOF is introduced. If that option
292 is set, an unexpected EOF is ignored, it pretends a close notify was received
293 instead and so the returned error becomes SSL_ERROR_ZERO_RETURN.
297 * Deprecated EC_POINT_set_Jprojective_coordinates_GFp() and
298 EC_POINT_get_Jprojective_coordinates_GFp(). These functions are not widely
299 used and applications should instead use the
300 L<EC_POINT_set_affine_coordinates(3)> and
301 L<EC_POINT_get_affine_coordinates(3)> functions.
305 * Added OSSL_PARAM_BLD to the public interface. This allows OSSL_PARAM
306 arrays to be more easily constructed via a series of utility functions.
307 Create a parameter builder using OSSL_PARAM_BLD_new(), add parameters using
308 the various push functions and finally convert to a passable OSSL_PARAM
309 array using OSSL_PARAM_BLD_to_param().
313 * The security strength of SHA1 and MD5 based signatures in TLS has been
314 reduced. This results in SSL 3, TLS 1.0, TLS 1.1 and DTLS 1.0 no longer
315 working at the default security level of 1 and instead requires security
316 level 0. The security level can be changed either using the cipher string
317 with @SECLEVEL, or calling SSL_CTX_set_security_level().
321 * EVP_PKEY_get0_RSA(), EVP_PKEY_get0_DSA(), EVP_PKEY_get0_DH(), and
322 EVP_PKEY_get0_EC_KEY() can now handle EVP_PKEYs with provider side
323 internal keys, if they correspond to one of those built in types.
327 * Added EVP_PKEY_set_type_by_keymgmt(), to initialise an EVP_PKEY to
328 contain a provider side internal key.
332 * ASN1_verify(), ASN1_digest() and ASN1_sign() have been deprecated.
333 They are old functions that we don't use, and that you could disable with
334 the macro NO_ASN1_OLD. This goes all the way back to OpenSSL 0.9.7.
338 * Project text documents not yet having a proper file name extension
339 (`HACKING`, `LICENSE`, `NOTES*`, `README*`, `VERSION`) have been renamed to
340 `*.md` as far as reasonable, else `*.txt`, for better use with file managers.
344 * The main project documents (README, NEWS, CHANGES, INSTALL, SUPPORT)
345 have been converted to Markdown with the goal to produce documents
346 which not only look pretty when viewed online in the browser, but
347 remain well readable inside a plain text editor.
349 To achieve this goal, a 'minimalistic' Markdown style has been applied
350 which avoids formatting elements that interfere too much with the
351 reading flow in the text file. For example, it
353 * avoids [ATX headings][] and uses [setext headings][] instead
354 (which works for `<h1>` and `<h2>` headings only).
355 * avoids [inline links][] and uses [reference links][] instead.
356 * avoids [fenced code blocks][] and uses [indented code blocks][] instead.
358 [ATX headings]: https://github.github.com/gfm/#atx-headings
359 [setext headings]: https://github.github.com/gfm/#setext-headings
360 [inline links]: https://github.github.com/gfm/#inline-link
361 [reference links]: https://github.github.com/gfm/#reference-link
362 [fenced code blocks]: https://github.github.com/gfm/#fenced-code-blocks
363 [indented code blocks]: https://github.github.com/gfm/#indented-code-blocks
365 *Matthias St. Pierre*
367 * The test suite is changed to preserve results of each test recipe.
368 A new directory test-runs/ with subdirectories named like the
369 test recipes are created in the build tree for this purpose.
373 * Added an implementation of CMP and CRMF (RFC 4210, RFC 4211 RFC 6712).
374 This adds crypto/cmp/, crpyto/crmf/, apps/cmp.c, and test/cmp_*.
375 See L<openssl-cmp(1)> and L<OSSL_CMP_exec_IR_ses(3)> as starting points.
377 *David von Oheimb, Martin Peylo*
379 * Generalized the HTTP client code from crypto/ocsp/ into crpyto/http/.
380 The legacy OCSP-focused and only partly documented API is retained.
381 See L<OSSL_CMP_MSG_http_perform(3)> etc. for details.
385 * Added `util/check-format.pl`, a tool for checking adherence to the
386 OpenSSL coding style <https://www.openssl.org/policies/codingstyle.html>.
387 The checks performed are incomplete and yield some false positives.
388 Still the tool should be useful for detecting most typical glitches.
392 * BIO_do_connect and BIO_do_handshake have been extended:
393 If domain name resolution yields multiple IP addresses all of them are tried
394 after connect() failures.
398 * All of the low level RSA functions have been deprecated including:
400 RSA_new_method, RSA_size, RSA_security_bits, RSA_get0_pss_params,
401 RSA_get_version, RSA_get0_engine, RSA_generate_key_ex,
402 RSA_generate_multi_prime_key, RSA_X931_derive_ex, RSA_X931_generate_key_ex,
403 RSA_check_key, RSA_check_key_ex, RSA_public_encrypt, RSA_private_encrypt,
404 RSA_public_decrypt, RSA_private_decrypt, RSA_set_default_method,
405 RSA_get_default_method, RSA_null_method, RSA_get_method, RSA_set_method,
406 RSA_PKCS1_OpenSSL, RSA_print_fp, RSA_print, RSA_sign, RSA_verify,
407 RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING, RSA_blinding_on,
408 RSA_blinding_off, RSA_setup_blinding, RSA_padding_add_PKCS1_type_1,
409 RSA_padding_check_PKCS1_type_1, RSA_padding_add_PKCS1_type_2,
410 RSA_padding_check_PKCS1_type_2, PKCS1_MGF1, RSA_padding_add_PKCS1_OAEP,
411 RSA_padding_check_PKCS1_OAEP, RSA_padding_add_PKCS1_OAEP_mgf1,
412 RSA_padding_check_PKCS1_OAEP_mgf1, RSA_padding_add_SSLv23,
413 RSA_padding_check_SSLv23, RSA_padding_add_none, RSA_padding_check_none,
414 RSA_padding_add_X931, RSA_padding_check_X931, RSA_X931_hash_id,
415 RSA_verify_PKCS1_PSS, RSA_padding_add_PKCS1_PSS, RSA_verify_PKCS1_PSS_mgf1,
416 RSA_padding_add_PKCS1_PSS_mgf1, RSA_set_ex_data, RSA_get_ex_data,
417 RSA_meth_new, RSA_meth_free, RSA_meth_dup, RSA_meth_get0_name,
418 RSA_meth_set1_name, RSA_meth_get_flags, RSA_meth_set_flags,
419 RSA_meth_get0_app_data, RSA_meth_set0_app_data, RSA_meth_get_pub_enc,
420 RSA_meth_set_pub_enc, RSA_meth_get_pub_dec, RSA_meth_set_pub_dec,
421 RSA_meth_get_priv_enc, RSA_meth_set_priv_enc, RSA_meth_get_priv_dec,
422 RSA_meth_set_priv_dec, RSA_meth_get_mod_exp, RSA_meth_set_mod_exp,
423 RSA_meth_get_bn_mod_exp, RSA_meth_set_bn_mod_exp, RSA_meth_get_init,
424 RSA_meth_set_init, RSA_meth_get_finish, RSA_meth_set_finish,
425 RSA_meth_get_sign, RSA_meth_set_sign, RSA_meth_get_verify,
426 RSA_meth_set_verify, RSA_meth_get_keygen, RSA_meth_set_keygen,
427 RSA_meth_get_multi_prime_keygen and RSA_meth_set_multi_prime_keygen.
429 Use of these low level functions has been informally discouraged for a long
430 time. Instead applications should use L<EVP_PKEY_encrypt_init(3)>,
431 L<EVP_PKEY_encrypt(3)>, L<EVP_PKEY_decrypt_init(3)> and
432 L<EVP_PKEY_decrypt(3)>.
436 * X509 certificates signed using SHA1 are no longer allowed at security
438 In TLS/SSL the default security level is 1. It can be set either
439 using the cipher string with @SECLEVEL, or calling
440 SSL_CTX_set_security_level(). If the leaf certificate is signed with SHA-1,
441 a call to SSL_CTX_use_certificate() will fail if the security level is not
443 Outside TLS/SSL, the default security level is -1 (effectively 0). It can
444 be set using X509_VERIFY_PARAM_set_auth_level() or using the -auth_level
449 * The command line utilities dhparam, dsa, gendsa and dsaparam have been
450 modified to use PKEY APIs. These commands are now in maintenance mode
451 and no new features will be added to them.
455 * The command line utility rsautl has been deprecated.
456 Instead use the pkeyutl program.
460 * The command line utilities genrsa and rsa have been modified to use PKEY
461 APIs. They now write PKCS#8 keys by default. These commands are now in
462 maintenance mode and no new features will be added to them.
466 * All of the low level DH functions have been deprecated including:
468 DH_OpenSSL, DH_set_default_method, DH_get_default_method, DH_set_method,
469 DH_new_method, DH_new, DH_free, DH_up_ref, DH_bits, DH_set0_pqg, DH_size,
470 DH_security_bits, DH_get_ex_new_index, DH_set_ex_data, DH_get_ex_data,
471 DH_generate_parameters_ex, DH_check_params_ex, DH_check_ex, DH_check_pub_key_ex,
472 DH_check, DH_check_pub_key, DH_generate_key, DH_compute_key,
473 DH_compute_key_padded, DHparams_print_fp, DHparams_print, DH_get_nid,
474 DH_KDF_X9_42, DH_get0_engine, DH_meth_new, DH_meth_free, DH_meth_dup,
475 DH_meth_get0_name, DH_meth_set1_name, DH_meth_get_flags, DH_meth_set_flags,
476 DH_meth_get0_app_data, DH_meth_set0_app_data, DH_meth_get_generate_key,
477 DH_meth_set_generate_key, DH_meth_get_compute_key, DH_meth_set_compute_key,
478 DH_meth_get_bn_mod_exp, DH_meth_set_bn_mod_exp, DH_meth_get_init,
479 DH_meth_set_init, DH_meth_get_finish, DH_meth_set_finish,
480 DH_meth_get_generate_params and DH_meth_set_generate_params.
482 Use of these low level functions has been informally discouraged for a long
483 time. Instead applications should use L<EVP_PKEY_derive_init(3)>
484 and L<EVP_PKEY_derive(3)>.
486 Additionally functions that read and write DH objects such as d2i_DHparams,
487 i2d_DHparams, PEM_read_DHparam, PEM_write_DHparams and other similar
488 functions have also been deprecated. Applications should instead use the
489 OSSL_DECODER and OSSL_ENCODER APIs to read and write DH files.
491 Finaly functions that assign or obtain DH objects from an EVP_PKEY such as
492 EVP_PKEY_assign_DH(), EVP_PKEY_get0_DH, EVP_PKEY_get1_DH, EVP_PKEY_set1_DH
493 are also deprecated. Applications should instead either read or write an
494 EVP_PKEY directly using the OSSL_DECODER and OSSL_ENCODER APIs. Or load an
495 EVP_PKEY directly from DH data using EVP_PKEY_fromdata().
497 *Paul Dale and Matt Caswell*
499 * All of the low level DSA functions have been deprecated including:
501 DSA_do_sign, DSA_do_verify, DSA_OpenSSL, DSA_set_default_method,
502 DSA_get_default_method, DSA_set_method, DSA_get_method,
503 DSA_new_method, DSA_size, DSA_security_bits, DSA_sign_setup, DSA_sign,
504 DSA_verify, DSA_get_ex_new_index, DSA_set_ex_data, DSA_get_ex_data,
505 DSA_generate_parameters_ex, DSA_generate_key, DSA_meth_new, DSA_get0_engine,
506 DSA_meth_free, DSA_meth_dup, DSA_meth_get0_name, DSA_meth_set1_name,
507 DSA_meth_get_flags, DSA_meth_set_flags, DSA_meth_get0_app_data,
508 DSA_meth_set0_app_data, DSA_meth_get_sign, DSA_meth_set_sign,
509 DSA_meth_get_sign_setup, DSA_meth_set_sign_setup, DSA_meth_get_verify,
510 DSA_meth_set_verify, DSA_meth_get_mod_exp, DSA_meth_set_mod_exp,
511 DSA_meth_get_bn_mod_exp, DSA_meth_set_bn_mod_exp, DSA_meth_get_init,
512 DSA_meth_set_init, DSA_meth_get_finish, DSA_meth_set_finish,
513 DSA_meth_get_paramgen, DSA_meth_set_paramgen, DSA_meth_get_keygen and
516 Use of these low level functions has been informally discouraged for a long
517 time. Instead applications should use L<EVP_DigestSignInit_ex(3)>,
518 L<EVP_DigestSignUpdate(3)> and L<EVP_DigestSignFinal(3)>.
522 * Reworked the treatment of EC EVP_PKEYs with the SM2 curve to
523 automatically become EVP_PKEY_SM2 rather than EVP_PKEY_EC.
524 This means that applications don't have to look at the curve NID and
525 `EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2)` to get SM2 computations.
526 However, they still can, that EVP_PKEY_set_alias_type() call acts as
527 a no-op when the EVP_PKEY is already of the given type.
529 Parameter and key generation is also reworked to make it possible
530 to generate EVP_PKEY_SM2 parameters and keys without having to go
531 through EVP_PKEY_EC generation and then change the EVP_PKEY type.
532 However, code that does the latter will still work as before.
536 * Deprecated low level ECDH and ECDSA functions. These include:
538 ECDH_compute_key, ECDSA_do_sign, ECDSA_do_sign_ex, ECDSA_do_verify,
539 ECDSA_sign_setup, ECDSA_sign, ECDSA_sign_ex, ECDSA_verify and
542 Use of these low level functions has been informally discouraged for a long
543 time. Instead applications should use the EVP_PKEY_derive(3),
544 EVP_DigestSign(3) and EVP_DigestVerify(3) functions.
548 * Deprecated the EC_KEY_METHOD functions. These include:
550 EC_KEY_METHOD_new, EC_KEY_METHOD_free, EC_KEY_METHOD_set_init,
551 EC_KEY_METHOD_set_keygen, EC_KEY_METHOD_set_compute_key,
552 EC_KEY_METHOD_set_sign, EC_KEY_METHOD_set_verify,
553 EC_KEY_METHOD_get_init, EC_KEY_METHOD_get_keygen,
554 EC_KEY_METHOD_get_compute_key, EC_KEY_METHOD_get_sign and
555 EC_KEY_METHOD_get_verify.
557 Instead applications and extension writers should use the OSSL_PROVIDER APIs.
561 * Deprecated EVP_PKEY_decrypt_old(), please use EVP_PKEY_decrypt_init()
562 and EVP_PKEY_decrypt() instead.
563 Deprecated EVP_PKEY_encrypt_old(), please use EVP_PKEY_encrypt_init()
564 and EVP_PKEY_encrypt() instead.
568 * Enhanced the documentation of EVP_PKEY_size(), EVP_PKEY_bits()
569 and EVP_PKEY_security_bits(). Especially EVP_PKEY_size() needed
570 a new formulation to include all the things it can be used for,
571 as well as words of caution.
575 * The SSL_CTX_set_tlsext_ticket_key_cb(3) function has been deprecated.
576 Instead used the new SSL_CTX_set_tlsext_ticket_key_evp_cb(3) function.
580 * All of the low level HMAC functions have been deprecated including:
582 HMAC, HMAC_size, HMAC_CTX_new, HMAC_CTX_reset, HMAC_CTX_free,
583 HMAC_Init_ex, HMAC_Update, HMAC_Final, HMAC_CTX_copy, HMAC_CTX_set_flags
586 Use of these low level functions has been informally discouraged for a long
587 time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
588 L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
589 and L<EVP_MAC_final(3)>.
593 * Over two thousand fixes were made to the documentation, including:
594 - Common options (such as -rand/-writerand, TLS version control, etc)
595 were refactored and point to newly-enhanced descriptions in openssl.pod.
596 - Added style conformance for all options (with help from Richard Levitte),
597 documented all reported missing options, added a CI build to check
598 that all options are documented and that no unimplemented options
600 - Documented some internals, such as all use of environment variables.
601 - Addressed all internal broken L<> references.
605 * All of the low level CMAC functions have been deprecated including:
607 CMAC_CTX_new, CMAC_CTX_cleanup, CMAC_CTX_free, CMAC_CTX_get0_cipher_ctx,
608 CMAC_CTX_copy, CMAC_Init, CMAC_Update, CMAC_Final and CMAC_resume.
610 Use of these low level functions has been informally discouraged for a long
611 time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
612 L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
613 and L<EVP_MAC_final(3)>.
617 * All of the low level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224, SHA256,
618 SHA384, SHA512 and Whirlpool digest functions have been deprecated.
621 MD2, MD2_options, MD2_Init, MD2_Update, MD2_Final, MD4, MD4_Init,
622 MD4_Update, MD4_Final, MD4_Transform, MD5, MD5_Init, MD5_Update,
623 MD5_Final, MD5_Transform, MDC2, MDC2_Init, MDC2_Update, MDC2_Final,
624 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final,
625 RIPEMD160_Transform, SHA1_Init, SHA1_Update, SHA1_Final, SHA1_Transform,
626 SHA224_Init, SHA224_Update, SHA224_Final, SHA224_Transform, SHA256_Init,
627 SHA256_Update, SHA256_Final, SHA256_Transform, SHA384, SHA384_Init,
628 SHA384_Update, SHA384_Final, SHA512, SHA512_Init, SHA512_Update,
629 SHA512_Final, SHA512_Transform, WHIRLPOOL, WHIRLPOOL_Init,
630 WHIRLPOOL_Update, WHIRLPOOL_BitUpdate and WHIRLPOOL_Final.
632 Use of these low level functions has been informally discouraged
633 for a long time. Applications should use the EVP_DigestInit_ex(3),
634 EVP_DigestUpdate(3) and EVP_DigestFinal_ex(3) functions instead.
638 * Corrected the documentation of the return values from the `EVP_DigestSign*`
639 set of functions. The documentation mentioned negative values for some
640 errors, but this was never the case, so the mention of negative values
643 Code that followed the documentation and thereby check with something
644 like `EVP_DigestSignInit(...) <= 0` will continue to work undisturbed.
648 * All of the low level cipher functions have been deprecated including:
650 AES_options, AES_set_encrypt_key, AES_set_decrypt_key, AES_encrypt,
651 AES_decrypt, AES_ecb_encrypt, AES_cbc_encrypt, AES_cfb128_encrypt,
652 AES_cfb1_encrypt, AES_cfb8_encrypt, AES_ofb128_encrypt,
653 AES_wrap_key, AES_unwrap_key, BF_set_key, BF_encrypt, BF_decrypt,
654 BF_ecb_encrypt, BF_cbc_encrypt, BF_cfb64_encrypt, BF_ofb64_encrypt,
655 BF_options, Camellia_set_key, Camellia_encrypt, Camellia_decrypt,
656 Camellia_ecb_encrypt, Camellia_cbc_encrypt, Camellia_cfb128_encrypt,
657 Camellia_cfb1_encrypt, Camellia_cfb8_encrypt, Camellia_ofb128_encrypt,
658 Camellia_ctr128_encrypt, CAST_set_key, CAST_encrypt, CAST_decrypt,
659 CAST_ecb_encrypt, CAST_cbc_encrypt, CAST_cfb64_encrypt,
660 CAST_ofb64_encrypt, DES_options, DES_encrypt1, DES_encrypt2,
661 DES_encrypt3, DES_decrypt3, DES_cbc_encrypt, DES_ncbc_encrypt,
662 DES_pcbc_encrypt, DES_xcbc_encrypt, DES_cfb_encrypt, DES_cfb64_encrypt,
663 DES_ecb_encrypt, DES_ofb_encrypt, DES_ofb64_encrypt, DES_random_key,
664 DES_set_odd_parity, DES_check_key_parity, DES_is_weak_key, DES_set_key,
665 DES_key_sched, DES_set_key_checked, DES_set_key_unchecked,
666 DES_string_to_key, DES_string_to_2keys, DES_fixup_key_parity,
667 DES_ecb2_encrypt, DES_ede2_cbc_encrypt, DES_ede2_cfb64_encrypt,
668 DES_ede2_ofb64_encrypt, DES_ecb3_encrypt, DES_ede3_cbc_encrypt,
669 DES_ede3_cfb64_encrypt, DES_ede3_cfb_encrypt, DES_ede3_ofb64_encrypt,
670 DES_cbc_cksum, DES_quad_cksum, IDEA_encrypt, IDEA_options,
671 IDEA_ecb_encrypt, IDEA_set_encrypt_key, IDEA_set_decrypt_key,
672 IDEA_cbc_encrypt, IDEA_cfb64_encrypt, IDEA_ofb64_encrypt, RC2_set_key,
673 RC2_encrypt, RC2_decrypt, RC2_ecb_encrypt, RC2_cbc_encrypt,
674 RC2_cfb64_encrypt, RC2_ofb64_encrypt, RC4, RC4_options, RC4_set_key,
675 RC5_32_set_key, RC5_32_encrypt, RC5_32_decrypt, RC5_32_ecb_encrypt,
676 RC5_32_cbc_encrypt, RC5_32_cfb64_encrypt, RC5_32_ofb64_encrypt,
677 SEED_set_key, SEED_encrypt, SEED_decrypt, SEED_ecb_encrypt,
678 SEED_cbc_encrypt, SEED_cfb128_encrypt and SEED_ofb128_encrypt.
680 Use of these low level functions has been informally discouraged for
681 a long time. Applications should use the high level EVP APIs, e.g.
682 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
683 equivalently named decrypt functions instead.
685 *Matt Caswell and Paul Dale*
687 * Removed include/openssl/opensslconf.h.in and replaced it with
688 include/openssl/configuration.h.in, which differs in not including
689 <openssl/macros.h>. A short header include/openssl/opensslconf.h
690 was added to include both.
692 This allows internal hacks where one might need to modify the set
693 of configured macros, for example this if deprecated symbols are
694 still supposed to be available internally:
696 #include <openssl/configuration.h>
698 #undef OPENSSL_NO_DEPRECATED
699 #define OPENSSL_SUPPRESS_DEPRECATED
701 #include <openssl/macros.h>
703 This should not be used by applications that use the exported
704 symbols, as that will lead to linking errors.
708 * Fixed an overflow bug in the x64_64 Montgomery squaring procedure
709 used in exponentiation with 512-bit moduli. No EC algorithms are
710 affected. Analysis suggests that attacks against 2-prime RSA1024,
711 3-prime RSA1536, and DSA1024 as a result of this defect would be very
712 difficult to perform and are not believed likely. Attacks against DH512
713 are considered just feasible. However, for an attack the target would
714 have to re-use the DH512 private key, which is not recommended anyway.
715 Also applications directly using the low level API BN_mod_exp may be
716 affected if they use BN_FLG_CONSTTIME.
721 * Most memory-debug features have been deprecated, and the functionality
722 replaced with no-ops.
726 * Added documentation for the STACK API.
730 * Introduced a new method type and API, OSSL_ENCODER, to
731 represent generic encoders. An implementation is expected to
732 be able to encode an object associated with a given name (such
733 as an algorithm name for an asymmetric key) into forms given by
734 implementation properties.
736 Encoders are primarily used from inside libcrypto, through
737 calls to functions like EVP_PKEY_print_private(),
738 PEM_write_bio_PrivateKey() and similar.
740 Encoders are specified in such a way that they can be made to
741 directly handle the provider side portion of an object, if this
742 provider side part comes from the same provider as the encoder
743 itself, but can also be made to handle objects in parametrized
744 form (as an OSSL_PARAM array of data). This allows a provider to
745 offer generic encoders as a service for any other provider.
749 * Added a .pragma directive to the syntax of configuration files, to
750 allow varying behavior in a supported and predictable manner.
751 Currently added pragma:
755 This allows dollar signs to be a keyword character unless it's
756 followed by a opening brace or parenthesis. This is useful for
757 platforms where dollar signs are commonly used in names, such as
758 volume names and system directory names on VMS.
762 * Added functionality to create an EVP_PKEY from user data. This
763 is effectively the same as creating a RSA, DH or DSA object and
764 then assigning them to an EVP_PKEY, but directly using algorithm
765 agnostic EVP functions. A benefit is that this should be future
766 proof for public key algorithms to come.
770 * Change the interpretation of the '--api' configuration option to
771 mean that this is a desired API compatibility level with no
772 further meaning. The previous interpretation, that this would
773 also mean to remove all deprecated symbols up to and including
774 the given version, no requires that 'no-deprecated' is also used
775 in the configuration.
777 When building applications, the desired API compatibility level
778 can be set with the OPENSSL_API_COMPAT macro like before. For
779 API compatibility version below 3.0, the old style numerical
780 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
781 For version 3.0 and on, the value is expected to be the decimal
782 value calculated from the major and minor version like this:
784 MAJOR * 10000 + MINOR * 100
788 -DOPENSSL_API_COMPAT=30000 For 3.0
789 -DOPENSSL_API_COMPAT=30200 For 3.2
791 To hide declarations that are deprecated up to and including the
792 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
793 given when building the application as well.
797 * Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
798 access to certificate and CRL stores via URIs and OSSL_STORE
801 This adds the following functions:
803 - X509_LOOKUP_store()
804 - X509_STORE_load_file()
805 - X509_STORE_load_path()
806 - X509_STORE_load_store()
807 - SSL_add_store_cert_subjects_to_stack()
808 - SSL_CTX_set_default_verify_store()
809 - SSL_CTX_load_verify_file()
810 - SSL_CTX_load_verify_dir()
811 - SSL_CTX_load_verify_store()
815 * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
816 The presence of this system service is determined at run-time.
820 * Added functionality to create an EVP_PKEY context based on data
821 for methods from providers. This takes an algorithm name and a
822 property query string and simply stores them, with the intent
823 that any operation that uses this context will use those strings
824 to fetch the needed methods implicitly, thereby making the port
825 of application written for pre-3.0 OpenSSL easier.
829 * The undocumented function NCONF_WIN32() has been deprecated; for
830 conversion details see the HISTORY section of doc/man5/config.pod
834 * Introduced the new functions EVP_DigestSignInit_ex() and
835 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
836 EVP_DigestVerifyUpdate() have been converted to functions. See the man
837 pages for further details.
841 * Over two thousand fixes were made to the documentation, including:
842 adding missing command flags, better style conformance, documentation
845 *Rich Salz, Richard Levitte*
847 * s390x assembly pack: add hardware-support for P-256, P-384, P-521,
848 X25519, X448, Ed25519 and Ed448.
852 * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
857 * Deprecated the public definition of ERR_STATE as well as the function
858 ERR_get_state(). This is done in preparation of making ERR_STATE an
863 * Added ERR functionality to give callers access to the stored function
864 names that have replaced the older function code based functions.
866 New functions are ERR_peek_error_func(), ERR_peek_last_error_func(),
867 ERR_peek_error_data(), ERR_peek_last_error_data(), ERR_get_error_all(),
868 ERR_peek_error_all() and ERR_peek_last_error_all().
870 These functions have become deprecated: ERR_get_error_line(),
871 ERR_get_error_line_data(), ERR_peek_error_line_data(),
872 ERR_peek_last_error_line_data() and ERR_func_error_string().
874 Users are recommended to use ERR_get_error_all(), or to pick information
875 with ERR_peek functions and finish off with getting the error code by using
880 * Extended testing to be verbose for failing tests only. The make variables
881 VERBOSE_FAILURE or VF can be used to enable this:
883 $ make VF=1 test # Unix
884 $ mms /macro=(VF=1) test ! OpenVMS
885 $ nmake VF=1 test # Windows
889 * Added several checks to X509_verify_cert() according to requirements in
890 RFC 5280 in case `X509_V_FLAG_X509_STRICT` is set
891 (which may be done by using the CLI option `-x509_strict`):
892 * The basicConstraints of CA certificates must be marked critical.
893 * CA certificates must explicitly include the keyUsage extension.
894 * If a pathlenConstraint is given the key usage keyCertSign must be allowed.
895 * The issuer name of any certificate must not be empty.
896 * The subject name of CA certs, certs with keyUsage crlSign,
897 and certs without subjectAlternativeName must not be empty.
898 * If a subjectAlternativeName extension is given it must not be empty.
899 * The signatureAlgorithm field and the cert signature must be consistent.
900 * Any given authorityKeyIdentifier and any given subjectKeyIdentifier
901 must not be marked critical.
902 * The authorityKeyIdentifier must be given for X.509v3 certs
903 unless they are self-signed.
904 * The subjectKeyIdentifier must be given for all X.509v3 CA certs.
908 * Certificate verification using X509_verify_cert() meanwhile rejects EC keys
909 with explicit curve parameters (specifiedCurve) as required by RFC 5480.
913 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
914 used even when parsing explicit parameters, when loading a encoded key
915 or calling `EC_GROUP_new_from_ecpkparameters()`/
916 `EC_GROUP_new_from_ecparameters()`.
917 This prevents bypass of security hardening and performance gains,
918 especially for curves with specialized EC_METHODs.
919 By default, if a key encoded with explicit parameters is loaded and later
920 encoded, the output is still encoded with explicit parameters, even if
921 internally a "named" EC_GROUP is used for computation.
925 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
926 this change, EC_GROUP_set_generator would accept order and/or cofactor as
927 NULL. After this change, only the cofactor parameter can be NULL. It also
928 does some minimal sanity checks on the passed order.
933 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
934 An attack is simple, if the first CMS_recipientInfo is valid but the
935 second CMS_recipientInfo is chosen ciphertext. If the second
936 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
937 encryption key will be replaced by garbage, and the message cannot be
938 decoded, but if the RSA decryption fails, the correct encryption key is
939 used and the recipient will not notice the attack.
940 As a work around for this potential attack the length of the decrypted
941 key must be equal to the cipher default key length, in case the
942 certifiate is not given and all recipientInfo are tried out.
943 The old behaviour can be re-enabled in the CMS code by setting the
944 CMS_DEBUG_DECRYPT flag.
948 * Early start up entropy quality from the DEVRANDOM seed source has been
949 improved for older Linux systems. The RAND subsystem will wait for
950 /dev/random to be producing output before seeding from /dev/urandom.
951 The seeded state is stored for future library initialisations using
952 a system global shared memory segment. The shared memory identifier
953 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
954 the desired value. The default identifier is 114.
958 * Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
959 when primes for RSA keys are computed.
960 Since we previously always generated primes == 2 (mod 3) for RSA keys,
961 the 2-prime and 3-prime RSA modules were easy to distinguish, since
962 `N = p*q = 1 (mod 3)`, but `N = p*q*r = 2 (mod 3)`. Therefore fingerprinting
963 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
964 This avoids possible fingerprinting of newly generated RSA modules.
968 * Correct the extended master secret constant on EBCDIC systems. Without this
969 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
970 negotiate EMS will fail. Unfortunately this also means that TLS connections
971 between EBCDIC systems with this fix, and EBCDIC systems without this
972 fix will fail if they negotiate EMS.
976 * Changed the library initialisation so that the config file is now loaded
977 by default. This was already the case for libssl. It now occurs for both
978 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
979 OPENSSL_init_crypto() to suppress automatic loading of a config file.
983 * Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
984 where the former acts as a replacement for ERR_put_error(), and the
985 latter replaces the combination ERR_put_error()+ERR_add_error_data().
986 ERR_raise_data() adds more flexibility by taking a format string and
987 an arbitrary number of arguments following it, to be processed with
992 * Introduced a new function, OSSL_PROVIDER_available(), which can be used
993 to check if a named provider is loaded and available. When called, it
994 will also activate all fallback providers if such are still present.
998 * Enforce a minimum DH modulus size of 512 bits.
1002 * Changed DH parameters to generate the order q subgroup instead of 2q.
1003 Previously generated DH parameters are still accepted by DH_check
1004 but DH_generate_key works around that by clearing bit 0 of the
1005 private key for those. This avoids leaking bit 0 of the private key.
1009 * Significantly reduce secure memory usage by the randomness pools.
1013 * `{CRYPTO,OPENSSL}_mem_debug_{push,pop}` are now no-ops and have been
1018 * A new type, EVP_KEYEXCH, has been introduced to represent key exchange
1019 algorithms. An implementation of a key exchange algorithm can be obtained
1020 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
1021 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
1022 the older EVP_PKEY_derive_init() function. See the man pages for the new
1023 functions for further details.
1027 * The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
1031 * Removed the function names from error messages and deprecated the
1034 * Removed NextStep support and the macro OPENSSL_UNISTD
1038 * Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
1039 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
1040 Also removed "export var as function" capability; we do not export
1041 variables, only functions.
1045 * RC5_32_set_key has been changed to return an int type, with 0 indicating
1046 an error and 1 indicating success. In previous versions of OpenSSL this
1047 was a void type. If a key was set longer than the maximum possible this
1052 * Support SM2 signing and verification schemes with X509 certificate.
1056 * Use SHA256 as the default digest for TS query in the ts app.
1060 * Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
1061 This checks that the salt length is at least 128 bits, the derived key
1062 length is at least 112 bits, and that the iteration count is at least 1000.
1063 For backwards compatibility these checks are disabled by default in the
1064 default provider, but are enabled by default in the fips provider.
1065 To enable or disable these checks use the control
1066 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
1070 * Default cipher lists/suites are now available via a function, the
1071 #defines are deprecated.
1075 * Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
1076 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
1077 for Windows Store apps easier. Also, the "no-uplink" option has been added.
1081 * Join the directories crypto/x509 and crypto/x509v3
1085 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
1086 This changes the size when using the genpkey app when no size is given. It
1087 fixes an omission in earlier changes that changed all RSA, DSA and DH
1088 generation apps to use 2048 bits by default.
1092 * Added command 'openssl kdf' that uses the EVP_KDF API.
1096 * Added command 'openssl mac' that uses the EVP_MAC API.
1100 * Added OPENSSL_info() to get diverse built-in OpenSSL data, such
1101 as default directories. Also added the command 'openssl info'
1102 for scripting purposes.
1106 * The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
1107 deprecated. These undocumented functions were never integrated into the EVP
1108 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
1109 Bi-directional IGE mode. These modes were never formally standardised and
1110 usage of these functions is believed to be very small. In particular
1111 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
1112 is ever used. The security implications are believed to be minimal, but
1113 this issue was never fixed for backwards compatibility reasons. New code
1114 should not use these modes.
1118 * Add prediction resistance to the DRBG reseeding process.
1122 * Limit the number of blocks in a data unit for AES-XTS to 2^20 as
1123 mandated by IEEE Std 1619-2018.
1127 * Added newline escaping functionality to a filename when using openssl dgst.
1128 This output format is to replicate the output format found in the `*sum`
1129 checksum programs. This aims to preserve backward compatibility.
1131 *Matt Eaton, Richard Levitte, and Paul Dale*
1133 * Removed the heartbeat message in DTLS feature, as it has very
1134 little usage and doesn't seem to fulfill a valuable purpose.
1135 The configuration option is now deprecated.
1139 * Changed the output of 'openssl {digestname} < file' to display the
1140 digest name in its output.
1144 * Added a new generic trace API which provides support for enabling
1145 instrumentation through trace output. This feature is mainly intended
1146 as an aid for developers and is disabled by default. To utilize it,
1147 OpenSSL needs to be configured with the `enable-trace` option.
1149 If the tracing API is enabled, the application can activate trace output
1150 by registering BIOs as trace channels for a number of tracing and debugging
1153 The 'openssl' application has been expanded to enable any of the types
1154 available via environment variables defined by the user, and serves as
1155 one possible example on how to use this functionality.
1157 *Richard Levitte & Matthias St. Pierre*
1159 * Added build tests for C++. These are generated files that only do one
1160 thing, to include one public OpenSSL head file each. This tests that
1161 the public header files can be usefully included in a C++ application.
1163 This test isn't enabled by default. It can be enabled with the option
1164 'enable-buildtest-c++'.
1168 * Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
1172 * Add KMAC to EVP_MAC.
1176 * Added property based algorithm implementation selection framework to
1181 * Added SCA hardening for modular field inversion in EC_GROUP through
1182 a new dedicated field_inv() pointer in EC_METHOD.
1183 This also addresses a leakage affecting conversions from projective
1184 to affine coordinates.
1186 *Billy Bob Brumley, Nicola Tuveri*
1188 * Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
1189 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
1190 those algorithms that were already supported through the EVP_PKEY API
1191 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
1192 and scrypt are now wrappers that call EVP_KDF.
1196 * Build devcrypto engine as a dynamic engine.
1198 *Eneas U de Queiroz*
1200 * Add keyed BLAKE2 to EVP_MAC.
1204 * Fix a bug in the computation of the endpoint-pair shared secret used
1205 by DTLS over SCTP. This breaks interoperability with older versions
1206 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
1207 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
1208 interoperability with such broken implementations. However, enabling
1209 this switch breaks interoperability with correct implementations.
1211 * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
1212 re-used X509_PUBKEY object if the second PUBKEY is malformed.
1216 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
1220 * Change the license to the Apache License v2.0.
1224 * Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
1226 - Major releases (indicated by incrementing the MAJOR release number)
1227 may introduce incompatible API/ABI changes.
1228 - Minor releases (indicated by incrementing the MINOR release number)
1229 may introduce new features but retain API/ABI compatibility.
1230 - Patch releases (indicated by incrementing the PATCH number)
1231 are intended for bug fixes and other improvements of existing
1232 features only (like improving performance or adding documentation)
1233 and retain API/ABI compatibility.
1237 * Add support for RFC5297 SIV mode (siv128), including AES-SIV.
1241 * Remove the 'dist' target and add a tarball building script. The
1242 'dist' target has fallen out of use, and it shouldn't be
1243 necessary to configure just to create a source distribution.
1247 * Recreate the OS390-Unix config target. It no longer relies on a
1248 special script like it did for OpenSSL pre-1.1.0.
1252 * Instead of having the source directories listed in Configure, add
1253 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
1258 * Add GMAC to EVP_MAC.
1262 * Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
1266 * Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
1267 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
1268 to facilitate the continued use of MACs through raw private keys in
1269 functionality such as `EVP_DigestSign*` and `EVP_DigestVerify*`.
1273 * Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
1274 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
1278 * Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
1279 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
1280 are retained for backwards compatibility.
1284 * AES-XTS mode now enforces that its two keys are different to mitigate
1285 the attacked described in "Efficient Instantiations of Tweakable
1286 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
1287 Details of this attack can be obtained from:
1288 <http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf>
1292 * Rename the object files, i.e. give them other names than in previous
1293 versions. Their names now include the name of the final product, as
1294 well as its type mnemonic (bin, lib, shlib).
1298 * Added new option for 'openssl list', '-objects', which will display the
1299 list of built in objects, i.e. OIDs with names.
1303 * Added the options `-crl_lastupdate` and `-crl_nextupdate` to `openssl ca`,
1304 allowing the `lastUpdate` and `nextUpdate` fields in the generated CRL to
1309 * Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
1310 improves application performance by removing data copies and providing
1311 applications with zero-copy system calls such as sendfile and splice.
1315 * The SSL option SSL_OP_CLEANSE_PLAINTEXT is introduced. If that
1316 option is set, openssl cleanses (zeroize) plaintext bytes from
1317 internal buffers after delivering them to the application. Note,
1318 the application is still responsible for cleansing other copies
1319 (e.g.: data received by SSL_read(3)).
1323 * `PKCS12_parse` now maintains the order of the parsed certificates
1324 when outputting them via `*ca` (rather than reversing it).
1328 * Deprecated pthread fork support methods. These were unused so no
1329 replacement is required.
1331 - OPENSSL_fork_prepare()
1332 - OPENSSL_fork_parent()
1333 - OPENSSL_fork_child()
1340 ### Changes between 1.1.1h and 1.1.1i [xx XXX xxxx]
1344 ### Changes between 1.1.1g and 1.1.1h [22 Sep 2020]
1346 * Certificates with explicit curve parameters are now disallowed in
1347 verification chains if the X509_V_FLAG_X509_STRICT flag is used.
1351 * The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
1352 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
1353 conversely, silently ignore DTLS protocol version bounds when configuring
1354 TLS-based contexts. The commands can be repeated to set bounds of both
1355 types. The same applies with the corresponding "min_protocol" and
1356 "max_protocol" command-line switches, in case some application uses both TLS
1359 SSL_CTX instances that are created for a fixed protocol version (e.g.
1360 TLSv1_server_method()) also silently ignore version bounds. Previously
1361 attempts to apply bounds to these protocol versions would result in an
1362 error. Now only the "version-flexible" SSL_CTX instances are subject to
1363 limits in configuration files in command-line options.
1367 * Handshake now fails if Extended Master Secret extension is dropped
1372 * The Oracle Developer Studio compiler will start reporting deprecated APIs
1374 ### Changes between 1.1.1f and 1.1.1g [21 Apr 2020]
1376 * Fixed segmentation fault in SSL_check_chain()
1377 Server or client applications that call the SSL_check_chain() function
1378 during or after a TLS 1.3 handshake may crash due to a NULL pointer
1379 dereference as a result of incorrect handling of the
1380 "signature_algorithms_cert" TLS extension. The crash occurs if an invalid
1381 or unrecognised signature algorithm is received from the peer. This could
1382 be exploited by a malicious peer in a Denial of Service attack.
1387 * Added AES consttime code for no-asm configurations
1388 an optional constant time support for AES was added
1389 when building openssl for no-asm.
1390 Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME
1391 Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME
1392 At this time this feature is by default disabled.
1393 It will be enabled by default in 3.0.
1397 ### Changes between 1.1.1e and 1.1.1f [31 Mar 2020]
1399 * Revert the change of EOF detection while reading in libssl to avoid
1400 regressions in applications depending on the current way of reporting
1401 the EOF. As the existing method is not fully accurate the change to
1402 reporting the EOF via SSL_ERROR_SSL is kept on the current development
1403 branch and will be present in the 3.0 release.
1407 * Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1
1408 when primes for RSA keys are computed.
1409 Since we previously always generated primes == 2 (mod 3) for RSA keys,
1410 the 2-prime and 3-prime RSA modules were easy to distinguish, since
1411 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
1412 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
1413 This avoids possible fingerprinting of newly generated RSA modules.
1417 ### Changes between 1.1.1d and 1.1.1e [17 Mar 2020]
1419 * Properly detect EOF while reading in libssl. Previously if we hit an EOF
1420 while reading in libssl then we would report an error back to the
1421 application (SSL_ERROR_SYSCALL) but errno would be 0. We now add
1422 an error to the stack (which means we instead return SSL_ERROR_SSL) and
1423 therefore give a hint as to what went wrong.
1427 * Check that ed25519 and ed448 are allowed by the security level. Previously
1428 signature algorithms not using an MD were not being checked that they were
1429 allowed by the security level.
1433 * Fixed SSL_get_servername() behaviour. The behaviour of SSL_get_servername()
1434 was not quite right. The behaviour was not consistent between resumption
1435 and normal handshakes, and also not quite consistent with historical
1436 behaviour. The behaviour in various scenarios has been clarified and
1437 it has been updated to make it match historical behaviour as closely as
1442 * *[VMS only]* The header files that the VMS compilers include automatically,
1443 `__DECC_INCLUDE_PROLOGUE.H` and `__DECC_INCLUDE_EPILOGUE.H`, use pragmas
1444 that the C++ compiler doesn't understand. This is a shortcoming in the
1445 compiler, but can be worked around with `__cplusplus` guards.
1447 C++ applications that use OpenSSL libraries must be compiled using the
1448 qualifier `/NAMES=(AS_IS,SHORTENED)` to be able to use all the OpenSSL
1449 functions. Otherwise, only functions with symbols of less than 31
1450 characters can be used, as the linker will not be able to successfully
1451 resolve symbols with longer names.
1455 * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
1456 The presence of this system service is determined at run-time.
1460 * Added newline escaping functionality to a filename when using openssl dgst.
1461 This output format is to replicate the output format found in the `*sum`
1462 checksum programs. This aims to preserve backward compatibility.
1464 *Matt Eaton, Richard Levitte, and Paul Dale*
1466 * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
1471 ### Changes between 1.1.1c and 1.1.1d [10 Sep 2019]
1473 * Fixed a fork protection issue. OpenSSL 1.1.1 introduced a rewritten random
1474 number generator (RNG). This was intended to include protection in the
1475 event of a fork() system call in order to ensure that the parent and child
1476 processes did not share the same RNG state. However this protection was not
1477 being used in the default case.
1479 A partial mitigation for this issue is that the output from a high
1480 precision timer is mixed into the RNG state so the likelihood of a parent
1481 and child process sharing state is significantly reduced.
1483 If an application already calls OPENSSL_init_crypto() explicitly using
1484 OPENSSL_INIT_ATFORK then this problem does not occur at all.
1487 *Matthias St. Pierre*
1489 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
1490 used even when parsing explicit parameters, when loading a encoded key
1491 or calling `EC_GROUP_new_from_ecpkparameters()`/
1492 `EC_GROUP_new_from_ecparameters()`.
1493 This prevents bypass of security hardening and performance gains,
1494 especially for curves with specialized EC_METHODs.
1495 By default, if a key encoded with explicit parameters is loaded and later
1496 encoded, the output is still encoded with explicit parameters, even if
1497 internally a "named" EC_GROUP is used for computation.
1501 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
1502 this change, EC_GROUP_set_generator would accept order and/or cofactor as
1503 NULL. After this change, only the cofactor parameter can be NULL. It also
1504 does some minimal sanity checks on the passed order.
1509 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
1510 An attack is simple, if the first CMS_recipientInfo is valid but the
1511 second CMS_recipientInfo is chosen ciphertext. If the second
1512 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
1513 encryption key will be replaced by garbage, and the message cannot be
1514 decoded, but if the RSA decryption fails, the correct encryption key is
1515 used and the recipient will not notice the attack.
1516 As a work around for this potential attack the length of the decrypted
1517 key must be equal to the cipher default key length, in case the
1518 certifiate is not given and all recipientInfo are tried out.
1519 The old behaviour can be re-enabled in the CMS code by setting the
1520 CMS_DEBUG_DECRYPT flag.
1525 * Early start up entropy quality from the DEVRANDOM seed source has been
1526 improved for older Linux systems. The RAND subsystem will wait for
1527 /dev/random to be producing output before seeding from /dev/urandom.
1528 The seeded state is stored for future library initialisations using
1529 a system global shared memory segment. The shared memory identifier
1530 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
1531 the desired value. The default identifier is 114.
1535 * Correct the extended master secret constant on EBCDIC systems. Without this
1536 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
1537 negotiate EMS will fail. Unfortunately this also means that TLS connections
1538 between EBCDIC systems with this fix, and EBCDIC systems without this
1539 fix will fail if they negotiate EMS.
1543 * Use Windows installation paths in the mingw builds
1545 Mingw isn't a POSIX environment per se, which means that Windows
1546 paths should be used for installation.
1551 * Changed DH_check to accept parameters with order q and 2q subgroups.
1552 With order 2q subgroups the bit 0 of the private key is not secret
1553 but DH_generate_key works around that by clearing bit 0 of the
1554 private key for those. This avoids leaking bit 0 of the private key.
1558 * Significantly reduce secure memory usage by the randomness pools.
1562 * Revert the DEVRANDOM_WAIT feature for Linux systems
1564 The DEVRANDOM_WAIT feature added a select() call to wait for the
1565 /dev/random device to become readable before reading from the
1566 /dev/urandom device.
1568 It turned out that this change had negative side effects on
1569 performance which were not acceptable. After some discussion it
1570 was decided to revert this feature and leave it up to the OS
1571 resp. the platform maintainer to ensure a proper initialization
1572 during early boot time.
1574 *Matthias St. Pierre*
1576 ### Changes between 1.1.1b and 1.1.1c [28 May 2019]
1578 * Add build tests for C++. These are generated files that only do one
1579 thing, to include one public OpenSSL head file each. This tests that
1580 the public header files can be usefully included in a C++ application.
1582 This test isn't enabled by default. It can be enabled with the option
1583 'enable-buildtest-c++'.
1587 * Enable SHA3 pre-hashing for ECDSA and DSA.
1591 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
1592 This changes the size when using the genpkey app when no size is given. It
1593 fixes an omission in earlier changes that changed all RSA, DSA and DH
1594 generation apps to use 2048 bits by default.
1598 * Reorganize the manual pages to consistently have RETURN VALUES,
1599 EXAMPLES, SEE ALSO and HISTORY come in that order, and adjust
1600 util/fix-doc-nits accordingly.
1602 *Paul Yang, Joshua Lock*
1604 * Add the missing accessor EVP_PKEY_get0_engine()
1608 * Have apps like 's_client' and 's_server' output the signature scheme
1609 along with other cipher suite parameters when debugging.
1613 * Make OPENSSL_config() error agnostic again.
1617 * Do the error handling in RSA decryption constant time.
1621 * Prevent over long nonces in ChaCha20-Poly1305.
1623 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
1624 for every encryption operation. RFC 7539 specifies that the nonce value
1625 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
1626 and front pads the nonce with 0 bytes if it is less than 12
1627 bytes. However it also incorrectly allows a nonce to be set of up to 16
1628 bytes. In this case only the last 12 bytes are significant and any
1629 additional leading bytes are ignored.
1631 It is a requirement of using this cipher that nonce values are
1632 unique. Messages encrypted using a reused nonce value are susceptible to
1633 serious confidentiality and integrity attacks. If an application changes
1634 the default nonce length to be longer than 12 bytes and then makes a
1635 change to the leading bytes of the nonce expecting the new value to be a
1636 new unique nonce then such an application could inadvertently encrypt
1637 messages with a reused nonce.
1639 Additionally the ignored bytes in a long nonce are not covered by the
1640 integrity guarantee of this cipher. Any application that relies on the
1641 integrity of these ignored leading bytes of a long nonce may be further
1642 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
1643 is safe because no such use sets such a long nonce value. However user
1644 applications that use this cipher directly and set a non-default nonce
1645 length to be longer than 12 bytes may be vulnerable.
1647 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
1653 * Add DEVRANDOM_WAIT feature for Linux systems
1655 On older Linux systems where the getrandom() system call is not available,
1656 OpenSSL normally uses the /dev/urandom device for seeding its CSPRNG.
1657 Contrary to getrandom(), the /dev/urandom device will not block during
1658 early boot when the kernel CSPRNG has not been seeded yet.
1660 To mitigate this known weakness, use select() to wait for /dev/random to
1661 become readable before reading from /dev/urandom.
1663 * Ensure that SM2 only uses SM3 as digest algorithm
1667 ### Changes between 1.1.1a and 1.1.1b [26 Feb 2019]
1669 * Change the info callback signals for the start and end of a post-handshake
1670 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
1671 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
1672 confused by this and assume that a TLSv1.2 renegotiation has started. This
1673 can break KeyUpdate handling. Instead we no longer signal the start and end
1674 of a post handshake message exchange (although the messages themselves are
1675 still signalled). This could break some applications that were expecting
1676 the old signals. However without this KeyUpdate is not usable for many
1681 ### Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
1683 * Timing vulnerability in DSA signature generation
1685 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
1686 timing side channel attack. An attacker could use variations in the signing
1687 algorithm to recover the private key.
1689 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
1694 * Timing vulnerability in ECDSA signature generation
1696 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
1697 timing side channel attack. An attacker could use variations in the signing
1698 algorithm to recover the private key.
1700 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
1705 * Fixed the issue that RAND_add()/RAND_seed() silently discards random input
1706 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
1707 of two gigabytes and the error handling improved.
1709 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
1710 categorized as a normal bug, not a security issue, because the DRBG reseeds
1711 automatically and is fully functional even without additional randomness
1712 provided by the application.
1714 ### Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
1716 * Add a new ClientHello callback. Provides a callback interface that gives
1717 the application the ability to adjust the nascent SSL object at the
1718 earliest stage of ClientHello processing, immediately after extensions have
1719 been collected but before they have been processed. In particular, this
1720 callback can adjust the supported TLS versions in response to the contents
1725 * Add SM2 base algorithm support.
1729 * s390x assembly pack: add (improved) hardware-support for the following
1730 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
1731 aes-cfb/cfb8, aes-ecb.
1735 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1736 parameter is no longer accepted, as it leads to a corrupt table. NULL
1737 pem_str is reserved for alias entries only.
1741 * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
1742 step for prime curves. The new implementation is based on formulae from
1743 differential addition-and-doubling in homogeneous projective coordinates
1744 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
1745 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
1746 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
1747 to work in projective coordinates.
1749 *Billy Bob Brumley, Nicola Tuveri*
1751 * Change generating and checking of primes so that the error rate of not
1752 being prime depends on the intended use based on the size of the input.
1753 For larger primes this will result in more rounds of Miller-Rabin.
1754 The maximal error rate for primes with more than 1080 bits is lowered
1757 *Kurt Roeckx, Annie Yousar*
1759 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1763 * The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
1764 moving between systems, and to avoid confusion when a Windows build is
1765 done with mingw vs with MSVC. For POSIX installs, there's still a
1766 symlink or copy named 'tsget' to avoid that confusion as well.
1770 * Revert blinding in ECDSA sign and instead make problematic addition
1771 length-invariant. Switch even to fixed-length Montgomery multiplication.
1775 * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
1776 step for binary curves. The new implementation is based on formulae from
1777 differential addition-and-doubling in mixed Lopez-Dahab projective
1778 coordinates, modified to independently blind the operands.
1780 *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
1782 * Add a scaffold to optionally enhance the Montgomery ladder implementation
1783 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
1784 EC_METHODs to implement their own specialized "ladder step", to take
1785 advantage of more favorable coordinate systems or more efficient
1786 differential addition-and-doubling algorithms.
1788 *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
1790 * Modified the random device based seed sources to keep the relevant
1791 file descriptors open rather than reopening them on each access.
1792 This allows such sources to operate in a chroot() jail without
1793 the associated device nodes being available. This behaviour can be
1794 controlled using RAND_keep_random_devices_open().
1798 * Numerous side-channel attack mitigations have been applied. This may have
1799 performance impacts for some algorithms for the benefit of improved
1800 security. Specific changes are noted in this change log by their respective
1805 * AIX shared library support overhaul. Switch to AIX "natural" way of
1806 handling shared libraries, which means collecting shared objects of
1807 different versions and bitnesses in one common archive. This allows to
1808 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
1809 doesn't affect the way 3rd party applications are linked, only how
1810 multi-version installation is managed.
1814 * Make ec_group_do_inverse_ord() more robust and available to other
1815 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
1816 mitigations are applied to the fallback BN_mod_inverse().
1817 When using this function rather than BN_mod_inverse() directly, new
1818 EC cryptosystem implementations are then safer-by-default.
1822 * Add coordinate blinding for EC_POINT and implement projective
1823 coordinate blinding for generic prime curves as a countermeasure to
1824 chosen point SCA attacks.
1826 *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
1828 * Add blinding to ECDSA and DSA signatures to protect against side channel
1829 attacks discovered by Keegan Ryan (NCC Group).
1833 * Enforce checking in the pkeyutl command line app to ensure that the input
1834 length does not exceed the maximum supported digest length when performing
1835 a sign, verify or verifyrecover operation.
1839 * SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
1840 I/O in combination with something like select() or poll() will hang. This
1841 can be turned off again using SSL_CTX_clear_mode().
1842 Many applications do not properly handle non-application data records, and
1843 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
1844 around the problems in those applications, but can also break some.
1845 It's recommended to read the manpages about SSL_read(), SSL_write(),
1846 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
1847 SSL_CTX_set_read_ahead() again.
1851 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1852 now allow empty (zero character) pass phrases.
1856 * Apply blinding to binary field modular inversion and remove patent
1857 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
1861 * Deprecate ec2_mult.c and unify scalar multiplication code paths for
1862 binary and prime elliptic curves.
1866 * Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
1867 constant time fixed point multiplication.
1871 * Revise elliptic curve scalar multiplication with timing attack
1872 defenses: ec_wNAF_mul redirects to a constant time implementation
1873 when computing fixed point and variable point multiplication (which
1874 in OpenSSL are mostly used with secret scalars in keygen, sign,
1875 ECDH derive operations).
1876 *Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
1879 * Updated CONTRIBUTING
1883 * Updated DRBG / RAND to request nonce and additional low entropy
1884 randomness from the system.
1886 *Matthias St. Pierre*
1888 * Updated 'openssl rehash' to use OpenSSL consistent default.
1892 * Moved the load of the ssl_conf module to libcrypto, which helps
1893 loading engines that libssl uses before libssl is initialised.
1897 * Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
1901 * Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
1903 *Ingo Schwarze, Rich Salz*
1905 * Added output of accepting IP address and port for 'openssl s_server'
1909 * Added a new API for TLSv1.3 ciphersuites:
1910 SSL_CTX_set_ciphersuites()
1911 SSL_set_ciphersuites()
1915 * Memory allocation failures consistently add an error to the error
1920 * Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
1921 in libcrypto when run as setuid/setgid.
1925 * Load any config file by default when libssl is used.
1929 * Added new public header file <openssl/rand_drbg.h> and documentation
1930 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
1932 *Matthias St. Pierre*
1934 * QNX support removed (cannot find contributors to get their approval
1935 for the license change).
1939 * TLSv1.3 replay protection for early data has been implemented. See the
1940 SSL_read_early_data() man page for further details.
1944 * Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
1945 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
1946 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
1947 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
1948 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
1949 configuration has been separated out. See the ciphers man page or the
1950 SSL_CTX_set_ciphersuites() man page for more information.
1954 * On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
1955 in responder mode now supports the new "-multi" option, which
1956 spawns the specified number of child processes to handle OCSP
1957 requests. The "-timeout" option now also limits the OCSP
1958 responder's patience to wait to receive the full client request
1959 on a newly accepted connection. Child processes are respawned
1960 as needed, and the CA index file is automatically reloaded
1961 when changed. This makes it possible to run the "ocsp" responder
1962 as a long-running service, making the OpenSSL CA somewhat more
1963 feature-complete. In this mode, most diagnostic messages logged
1964 after entering the event loop are logged via syslog(3) rather than
1969 * Added support for X448 and Ed448. Heavily based on original work by
1974 * Extend OSSL_STORE with capabilities to search and to narrow the set of
1975 objects loaded. This adds the functions OSSL_STORE_expect() and
1976 OSSL_STORE_find() as well as needed tools to construct searches and
1977 get the search data out of them.
1981 * Support for TLSv1.3 added. Note that users upgrading from an earlier
1982 version of OpenSSL should review their configuration settings to ensure
1983 that they are still appropriate for TLSv1.3. For further information see:
1984 <https://wiki.openssl.org/index.php/TLS1.3>
1988 * Grand redesign of the OpenSSL random generator
1990 The default RAND method now utilizes an AES-CTR DRBG according to
1991 NIST standard SP 800-90Ar1. The new random generator is essentially
1992 a port of the default random generator from the OpenSSL FIPS 2.0
1993 object module. It is a hybrid deterministic random bit generator
1994 using an AES-CTR bit stream and which seeds and reseeds itself
1995 automatically using trusted system entropy sources.
1997 Some of its new features are:
1998 - Support for multiple DRBG instances with seed chaining.
1999 - The default RAND method makes use of a DRBG.
2000 - There is a public and private DRBG instance.
2001 - The DRBG instances are fork-safe.
2002 - Keep all global DRBG instances on the secure heap if it is enabled.
2003 - The public and private DRBG instance are per thread for lock free
2006 *Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre*
2008 * Changed Configure so it only says what it does and doesn't dump
2009 so much data. Instead, ./configdata.pm should be used as a script
2010 to display all sorts of configuration data.
2014 * Added processing of "make variables" to Configure.
2018 * Added SHA512/224 and SHA512/256 algorithm support.
2022 * The last traces of Netware support, first removed in 1.1.0, have
2027 * Get rid of Makefile.shared, and in the process, make the processing
2028 of certain files (rc.obj, or the .def/.map/.opt files produced from
2029 the ordinal files) more visible and hopefully easier to trace and
2030 debug (or make silent).
2034 * Make it possible to have environment variable assignments as
2035 arguments to config / Configure.
2039 * Add multi-prime RSA (RFC 8017) support.
2043 * Add SM3 implemented according to GB/T 32905-2016
2044 *Jack Lloyd <jack.lloyd@ribose.com>,*
2045 *Ronald Tse <ronald.tse@ribose.com>,*
2046 *Erick Borsboom <erick.borsboom@ribose.com>*
2048 * Add 'Maximum Fragment Length' TLS extension negotiation and support
2049 as documented in RFC6066.
2050 Based on a patch from Tomasz Moń
2052 *Filipe Raimundo da Silva*
2054 * Add SM4 implemented according to GB/T 32907-2016.
2055 *Jack Lloyd <jack.lloyd@ribose.com>,*
2056 *Ronald Tse <ronald.tse@ribose.com>,*
2057 *Erick Borsboom <erick.borsboom@ribose.com>*
2059 * Reimplement -newreq-nodes and ERR_error_string_n; the
2060 original author does not agree with the license change.
2064 * Add ARIA AEAD TLS support.
2068 * Some macro definitions to support VS6 have been removed. Visual
2069 Studio 6 has not worked since 1.1.0
2073 * Add ERR_clear_last_mark(), to allow callers to clear the last mark
2074 without clearing the errors.
2078 * Add "atfork" functions. If building on a system that without
2079 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
2080 requirements. The RAND facility now uses/requires this.
2088 * The UI API becomes a permanent and integral part of libcrypto, i.e.
2089 not possible to disable entirely. However, it's still possible to
2090 disable the console reading UI method, UI_OpenSSL() (use UI_null()
2093 To disable, configure with 'no-ui-console'. 'no-ui' is still
2094 possible to use as an alias. Check at compile time with the
2095 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
2096 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
2100 * Add a STORE module, which implements a uniform and URI based reader of
2101 stores that can contain keys, certificates, CRLs and numerous other
2102 objects. The main API is loosely based on a few stdio functions,
2103 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
2104 OSSL_STORE_error and OSSL_STORE_close.
2105 The implementation uses backends called "loaders" to implement arbitrary
2106 URI schemes. There is one built in "loader" for the 'file' scheme.
2110 * Add devcrypto engine. This has been implemented against cryptodev-linux,
2111 then adjusted to work on FreeBSD 8.4 as well.
2112 Enable by configuring with 'enable-devcryptoeng'. This is done by default
2113 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
2117 * Module names can prefixed with OSSL_ or OPENSSL_. This affects
2118 util/mkerr.pl, which is adapted to allow those prefixes, leading to
2119 error code calls like this:
2121 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
2123 With this change, we claim the namespaces OSSL and OPENSSL in a manner
2124 that can be encoded in C. For the foreseeable future, this will only
2127 *Richard Levitte and Tim Hudson*
2129 * Removed BSD cryptodev engine.
2133 * Add a build target 'build_all_generated', to build all generated files
2134 and only that. This can be used to prepare everything that requires
2135 things like perl for a system that lacks perl and then move everything
2136 to that system and do the rest of the build there.
2140 * In the UI interface, make it possible to duplicate the user data. This
2141 can be used by engines that need to retain the data for a longer time
2142 than just the call where this user data is passed.
2146 * Ignore the '-named_curve auto' value for compatibility of applications
2149 *Tomas Mraz <tmraz@fedoraproject.org>*
2151 * Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
2152 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
2153 alerts across multiple records (some of which could be empty). In practice
2154 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
2155 prohibits this altogether and other libraries (BoringSSL, NSS) do not
2156 support this at all. Supporting it adds significant complexity to the
2157 record layer, and its removal is unlikely to cause interoperability
2162 * Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
2163 with Z. These are meant to replace LONG and ZLONG and to be size safe.
2164 The use of LONG and ZLONG is discouraged and scheduled for deprecation
2169 * Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
2170 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
2172 *Richard Levitte, Andy Polyakov*
2174 * Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
2179 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
2180 platform rather than 'mingw'.
2184 * The functions X509_STORE_add_cert and X509_STORE_add_crl return
2185 success if they are asked to add an object which already exists
2186 in the store. This change cascades to other functions which load
2187 certificates and CRLs.
2191 * x86_64 assembly pack: annotate code with DWARF CFI directives to
2192 facilitate stack unwinding even from assembly subroutines.
2196 * Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
2197 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
2201 * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
2202 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
2203 which is the minimum version we support.
2207 * Certificate time validation (X509_cmp_time) enforces stricter
2208 compliance with RFC 5280. Fractional seconds and timezone offsets
2209 are no longer allowed.
2213 * Add support for ARIA
2217 * s_client will now send the Server Name Indication (SNI) extension by
2218 default unless the new "-noservername" option is used. The server name is
2219 based on the host provided to the "-connect" option unless overridden by
2220 using "-servername".
2224 * Add support for SipHash
2228 * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
2229 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
2230 prevent issues where no progress is being made and the peer continually
2231 sends unrecognised record types, using up resources processing them.
2235 * 'openssl passwd' can now produce SHA256 and SHA512 based output,
2236 using the algorithm defined in
2237 <https://www.akkadia.org/drepper/SHA-crypt.txt>
2241 * Heartbeat support has been removed; the ABI is changed for now.
2243 *Richard Levitte, Rich Salz*
2245 * Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
2249 * The RSA "null" method, which was partially supported to avoid patent
2250 issues, has been replaced to always returns NULL.
2257 ### Changes between 1.1.0k and 1.1.0l [10 Sep 2019]
2259 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
2260 used even when parsing explicit parameters, when loading a encoded key
2261 or calling `EC_GROUP_new_from_ecpkparameters()`/
2262 `EC_GROUP_new_from_ecparameters()`.
2263 This prevents bypass of security hardening and performance gains,
2264 especially for curves with specialized EC_METHODs.
2265 By default, if a key encoded with explicit parameters is loaded and later
2266 encoded, the output is still encoded with explicit parameters, even if
2267 internally a "named" EC_GROUP is used for computation.
2271 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
2272 this change, EC_GROUP_set_generator would accept order and/or cofactor as
2273 NULL. After this change, only the cofactor parameter can be NULL. It also
2274 does some minimal sanity checks on the passed order.
2279 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
2280 An attack is simple, if the first CMS_recipientInfo is valid but the
2281 second CMS_recipientInfo is chosen ciphertext. If the second
2282 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
2283 encryption key will be replaced by garbage, and the message cannot be
2284 decoded, but if the RSA decryption fails, the correct encryption key is
2285 used and the recipient will not notice the attack.
2286 As a work around for this potential attack the length of the decrypted
2287 key must be equal to the cipher default key length, in case the
2288 certifiate is not given and all recipientInfo are tried out.
2289 The old behaviour can be re-enabled in the CMS code by setting the
2290 CMS_DEBUG_DECRYPT flag.
2295 * Use Windows installation paths in the mingw builds
2297 Mingw isn't a POSIX environment per se, which means that Windows
2298 paths should be used for installation.
2303 ### Changes between 1.1.0j and 1.1.0k [28 May 2019]
2305 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
2306 This changes the size when using the genpkey app when no size is given. It
2307 fixes an omission in earlier changes that changed all RSA, DSA and DH
2308 generation apps to use 2048 bits by default.
2312 * Prevent over long nonces in ChaCha20-Poly1305.
2314 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
2315 for every encryption operation. RFC 7539 specifies that the nonce value
2316 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
2317 and front pads the nonce with 0 bytes if it is less than 12
2318 bytes. However it also incorrectly allows a nonce to be set of up to 16
2319 bytes. In this case only the last 12 bytes are significant and any
2320 additional leading bytes are ignored.
2322 It is a requirement of using this cipher that nonce values are
2323 unique. Messages encrypted using a reused nonce value are susceptible to
2324 serious confidentiality and integrity attacks. If an application changes
2325 the default nonce length to be longer than 12 bytes and then makes a
2326 change to the leading bytes of the nonce expecting the new value to be a
2327 new unique nonce then such an application could inadvertently encrypt
2328 messages with a reused nonce.
2330 Additionally the ignored bytes in a long nonce are not covered by the
2331 integrity guarantee of this cipher. Any application that relies on the
2332 integrity of these ignored leading bytes of a long nonce may be further
2333 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
2334 is safe because no such use sets such a long nonce value. However user
2335 applications that use this cipher directly and set a non-default nonce
2336 length to be longer than 12 bytes may be vulnerable.
2338 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
2344 * Added SCA hardening for modular field inversion in EC_GROUP through
2345 a new dedicated field_inv() pointer in EC_METHOD.
2346 This also addresses a leakage affecting conversions from projective
2347 to affine coordinates.
2349 *Billy Bob Brumley, Nicola Tuveri*
2351 * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
2352 re-used X509_PUBKEY object if the second PUBKEY is malformed.
2356 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
2360 * Remove the 'dist' target and add a tarball building script. The
2361 'dist' target has fallen out of use, and it shouldn't be
2362 necessary to configure just to create a source distribution.
2366 ### Changes between 1.1.0i and 1.1.0j [20 Nov 2018]
2368 * Timing vulnerability in DSA signature generation
2370 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
2371 timing side channel attack. An attacker could use variations in the signing
2372 algorithm to recover the private key.
2374 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
2379 * Timing vulnerability in ECDSA signature generation
2381 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
2382 timing side channel attack. An attacker could use variations in the signing
2383 algorithm to recover the private key.
2385 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
2390 * Add coordinate blinding for EC_POINT and implement projective
2391 coordinate blinding for generic prime curves as a countermeasure to
2392 chosen point SCA attacks.
2394 *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
2396 ### Changes between 1.1.0h and 1.1.0i [14 Aug 2018]
2398 * Client DoS due to large DH parameter
2400 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
2401 malicious server can send a very large prime value to the client. This will
2402 cause the client to spend an unreasonably long period of time generating a
2403 key for this prime resulting in a hang until the client has finished. This
2404 could be exploited in a Denial Of Service attack.
2406 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
2411 * Cache timing vulnerability in RSA Key Generation
2413 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
2414 a cache timing side channel attack. An attacker with sufficient access to
2415 mount cache timing attacks during the RSA key generation process could
2416 recover the private key.
2418 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
2419 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
2424 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
2425 parameter is no longer accepted, as it leads to a corrupt table. NULL
2426 pem_str is reserved for alias entries only.
2430 * Revert blinding in ECDSA sign and instead make problematic addition
2431 length-invariant. Switch even to fixed-length Montgomery multiplication.
2435 * Change generating and checking of primes so that the error rate of not
2436 being prime depends on the intended use based on the size of the input.
2437 For larger primes this will result in more rounds of Miller-Rabin.
2438 The maximal error rate for primes with more than 1080 bits is lowered
2441 *Kurt Roeckx, Annie Yousar*
2443 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
2447 * Add blinding to ECDSA and DSA signatures to protect against side channel
2448 attacks discovered by Keegan Ryan (NCC Group).
2452 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
2453 now allow empty (zero character) pass phrases.
2457 * Certificate time validation (X509_cmp_time) enforces stricter
2458 compliance with RFC 5280. Fractional seconds and timezone offsets
2459 are no longer allowed.
2463 * Fixed a text canonicalisation bug in CMS
2465 Where a CMS detached signature is used with text content the text goes
2466 through a canonicalisation process first prior to signing or verifying a
2467 signature. This process strips trailing space at the end of lines, converts
2468 line terminators to CRLF and removes additional trailing line terminators
2469 at the end of a file. A bug in the canonicalisation process meant that
2470 some characters, such as form-feed, were incorrectly treated as whitespace
2471 and removed. This is contrary to the specification (RFC5485). This fix
2472 could mean that detached text data signed with an earlier version of
2473 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
2474 signed with a fixed OpenSSL may fail to verify with an earlier version of
2475 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
2476 and use the "-binary" flag (for the "cms" command line application) or set
2477 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
2481 ### Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
2483 * Constructed ASN.1 types with a recursive definition could exceed the stack
2485 Constructed ASN.1 types with a recursive definition (such as can be found
2486 in PKCS7) could eventually exceed the stack given malicious input with
2487 excessive recursion. This could result in a Denial Of Service attack. There
2488 are no such structures used within SSL/TLS that come from untrusted sources
2489 so this is considered safe.
2491 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
2497 * Incorrect CRYPTO_memcmp on HP-UX PA-RISC
2499 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
2500 effectively reduced to only comparing the least significant bit of each
2501 byte. This allows an attacker to forge messages that would be considered as
2502 authenticated in an amount of tries lower than that guaranteed by the
2503 security claims of the scheme. The module can only be compiled by the
2504 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
2506 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
2512 * Add a build target 'build_all_generated', to build all generated files
2513 and only that. This can be used to prepare everything that requires
2514 things like perl for a system that lacks perl and then move everything
2515 to that system and do the rest of the build there.
2519 * Backport SSL_OP_NO_RENGOTIATION
2521 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
2522 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
2523 changes this is no longer possible in 1.1.0. Therefore the new
2524 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
2525 1.1.0 to provide equivalent functionality.
2527 Note that if an application built against 1.1.0h headers (or above) is run
2528 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
2529 accepted but nothing will happen, i.e. renegotiation will not be prevented.
2533 * Removed the OS390-Unix config target. It relied on a script that doesn't
2538 * rsaz_1024_mul_avx2 overflow bug on x86_64
2540 There is an overflow bug in the AVX2 Montgomery multiplication procedure
2541 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
2542 Analysis suggests that attacks against RSA and DSA as a result of this
2543 defect would be very difficult to perform and are not believed likely.
2544 Attacks against DH1024 are considered just feasible, because most of the
2545 work necessary to deduce information about a private key may be performed
2546 offline. The amount of resources required for such an attack would be
2547 significant. However, for an attack on TLS to be meaningful, the server
2548 would have to share the DH1024 private key among multiple clients, which is
2549 no longer an option since CVE-2016-0701.
2551 This only affects processors that support the AVX2 but not ADX extensions
2552 like Intel Haswell (4th generation).
2554 This issue was reported to OpenSSL by David Benjamin (Google). The issue
2555 was originally found via the OSS-Fuzz project.
2560 ### Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
2562 * bn_sqrx8x_internal carry bug on x86_64
2564 There is a carry propagating bug in the x86_64 Montgomery squaring
2565 procedure. No EC algorithms are affected. Analysis suggests that attacks
2566 against RSA and DSA as a result of this defect would be very difficult to
2567 perform and are not believed likely. Attacks against DH are considered just
2568 feasible (although very difficult) because most of the work necessary to
2569 deduce information about a private key may be performed offline. The amount
2570 of resources required for such an attack would be very significant and
2571 likely only accessible to a limited number of attackers. An attacker would
2572 additionally need online access to an unpatched system using the target
2573 private key in a scenario with persistent DH parameters and a private
2574 key that is shared between multiple clients.
2576 This only affects processors that support the BMI1, BMI2 and ADX extensions
2577 like Intel Broadwell (5th generation) and later or AMD Ryzen.
2579 This issue was reported to OpenSSL by the OSS-Fuzz project.
2584 * Malformed X.509 IPAddressFamily could cause OOB read
2586 If an X.509 certificate has a malformed IPAddressFamily extension,
2587 OpenSSL could do a one-byte buffer overread. The most likely result
2588 would be an erroneous display of the certificate in text format.
2590 This issue was reported to OpenSSL by the OSS-Fuzz project.
2595 ### Changes between 1.1.0e and 1.1.0f [25 May 2017]
2597 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
2598 platform rather than 'mingw'.
2602 * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
2603 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
2604 which is the minimum version we support.
2608 ### Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
2610 * Encrypt-Then-Mac renegotiation crash
2612 During a renegotiation handshake if the Encrypt-Then-Mac extension is
2613 negotiated where it was not in the original handshake (or vice-versa) then
2614 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
2615 and servers are affected.
2617 This issue was reported to OpenSSL by Joe Orton (Red Hat).
2622 ### Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
2624 * Truncated packet could crash via OOB read
2626 If one side of an SSL/TLS path is running on a 32-bit host and a specific
2627 cipher is being used, then a truncated packet can cause that host to
2628 perform an out-of-bounds read, usually resulting in a crash.
2630 This issue was reported to OpenSSL by Robert Święcki of Google.
2635 * Bad (EC)DHE parameters cause a client crash
2637 If a malicious server supplies bad parameters for a DHE or ECDHE key
2638 exchange then this can result in the client attempting to dereference a
2639 NULL pointer leading to a client crash. This could be exploited in a Denial
2642 This issue was reported to OpenSSL by Guido Vranken.
2647 * BN_mod_exp may produce incorrect results on x86_64
2649 There is a carry propagating bug in the x86_64 Montgomery squaring
2650 procedure. No EC algorithms are affected. Analysis suggests that attacks
2651 against RSA and DSA as a result of this defect would be very difficult to
2652 perform and are not believed likely. Attacks against DH are considered just
2653 feasible (although very difficult) because most of the work necessary to
2654 deduce information about a private key may be performed offline. The amount
2655 of resources required for such an attack would be very significant and
2656 likely only accessible to a limited number of attackers. An attacker would
2657 additionally need online access to an unpatched system using the target
2658 private key in a scenario with persistent DH parameters and a private
2659 key that is shared between multiple clients. For example this can occur by
2660 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
2661 similar to CVE-2015-3193 but must be treated as a separate problem.
2663 This issue was reported to OpenSSL by the OSS-Fuzz project.
2668 ### Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
2670 * ChaCha20/Poly1305 heap-buffer-overflow
2672 TLS connections using `*-CHACHA20-POLY1305` ciphersuites are susceptible to
2673 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
2674 crash. This issue is not considered to be exploitable beyond a DoS.
2676 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
2681 * CMS Null dereference
2683 Applications parsing invalid CMS structures can crash with a NULL pointer
2684 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
2685 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
2686 structure callback if an attempt is made to free certain invalid encodings.
2687 Only CHOICE structures using a callback which do not handle NULL value are
2690 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
2695 * Montgomery multiplication may produce incorrect results
2697 There is a carry propagating bug in the Broadwell-specific Montgomery
2698 multiplication procedure that handles input lengths divisible by, but
2699 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
2700 and DH private keys are impossible. This is because the subroutine in
2701 question is not used in operations with the private key itself and an input
2702 of the attacker's direct choice. Otherwise the bug can manifest itself as
2703 transient authentication and key negotiation failures or reproducible
2704 erroneous outcome of public-key operations with specially crafted input.
2705 Among EC algorithms only Brainpool P-512 curves are affected and one
2706 presumably can attack ECDH key negotiation. Impact was not analyzed in
2707 detail, because pre-requisites for attack are considered unlikely. Namely
2708 multiple clients have to choose the curve in question and the server has to
2709 share the private key among them, neither of which is default behaviour.
2710 Even then only clients that chose the curve will be affected.
2712 This issue was publicly reported as transient failures and was not
2713 initially recognized as a security issue. Thanks to Richard Morgan for
2714 providing reproducible case.
2719 * Removed automatic addition of RPATH in shared libraries and executables,
2720 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
2724 ### Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
2726 * Fix Use After Free for large message sizes
2728 The patch applied to address CVE-2016-6307 resulted in an issue where if a
2729 message larger than approx 16k is received then the underlying buffer to
2730 store the incoming message is reallocated and moved. Unfortunately a
2731 dangling pointer to the old location is left which results in an attempt to
2732 write to the previously freed location. This is likely to result in a
2733 crash, however it could potentially lead to execution of arbitrary code.
2735 This issue only affects OpenSSL 1.1.0a.
2737 This issue was reported to OpenSSL by Robert Święcki.
2742 ### Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
2744 * OCSP Status Request extension unbounded memory growth
2746 A malicious client can send an excessively large OCSP Status Request
2747 extension. If that client continually requests renegotiation, sending a
2748 large OCSP Status Request extension each time, then there will be unbounded
2749 memory growth on the server. This will eventually lead to a Denial Of
2750 Service attack through memory exhaustion. Servers with a default
2751 configuration are vulnerable even if they do not support OCSP. Builds using
2752 the "no-ocsp" build time option are not affected.
2754 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
2759 * SSL_peek() hang on empty record
2761 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
2762 sends an empty record. This could be exploited by a malicious peer in a
2763 Denial Of Service attack.
2765 This issue was reported to OpenSSL by Alex Gaynor.
2770 * Excessive allocation of memory in tls_get_message_header() and
2771 dtls1_preprocess_fragment()
2773 A (D)TLS message includes 3 bytes for its length in the header for the
2774 message. This would allow for messages up to 16Mb in length. Messages of
2775 this length are excessive and OpenSSL includes a check to ensure that a
2776 peer is sending reasonably sized messages in order to avoid too much memory
2777 being consumed to service a connection. A flaw in the logic of version
2778 1.1.0 means that memory for the message is allocated too early, prior to
2779 the excessive message length check. Due to way memory is allocated in
2780 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
2781 to service a connection. This could lead to a Denial of Service through
2782 memory exhaustion. However, the excessive message length check still takes
2783 place, and this would cause the connection to immediately fail. Assuming
2784 that the application calls SSL_free() on the failed connection in a timely
2785 manner then the 21Mb of allocated memory will then be immediately freed
2786 again. Therefore the excessive memory allocation will be transitory in
2787 nature. This then means that there is only a security impact if:
2789 1) The application does not call SSL_free() in a timely manner in the event
2790 that the connection fails
2792 2) The application is working in a constrained environment where there is
2793 very little free memory
2795 3) The attacker initiates multiple connection attempts such that there are
2796 multiple connections in a state where memory has been allocated for the
2797 connection; SSL_free() has not yet been called; and there is insufficient
2798 memory to service the multiple requests.
2800 Except in the instance of (1) above any Denial Of Service is likely to be
2801 transitory because as soon as the connection fails the memory is
2802 subsequently freed again in the SSL_free() call. However there is an
2803 increased risk during this period of application crashes due to the lack of
2804 memory - which would then mean a more serious Denial of Service.
2806 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
2807 (CVE-2016-6307 and CVE-2016-6308)
2811 * solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
2812 had to be removed. Primary reason is that vendor assembler can't
2813 assemble our modules with -KPIC flag. As result it, assembly
2814 support, was not even available as option. But its lack means
2815 lack of side-channel resistant code, which is incompatible with
2816 security by todays standards. Fortunately gcc is readily available
2817 prepackaged option, which we firmly point at...
2821 ### Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
2823 * Windows command-line tool supports UTF-8 opt-in option for arguments
2824 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
2825 (to any value) allows Windows user to access PKCS#12 file generated
2826 with Windows CryptoAPI and protected with non-ASCII password, as well
2827 as files generated under UTF-8 locale on Linux also protected with
2832 * To mitigate the SWEET32 attack ([CVE-2016-2183]), 3DES cipher suites
2833 have been disabled by default and removed from DEFAULT, just like RC4.
2834 See the RC4 item below to re-enable both.
2838 * The method for finding the storage location for the Windows RAND seed file
2839 has changed. First we check %RANDFILE%. If that is not set then we check
2840 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
2841 all else fails we fall back to C:\.
2845 * The EVP_EncryptUpdate() function has had its return type changed from void
2846 to int. A return of 0 indicates and error while a return of 1 indicates
2851 * The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
2852 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
2853 off the constant time implementation for RSA, DSA and DH have been made
2854 no-ops and deprecated.
2858 * Windows RAND implementation was simplified to only get entropy by
2859 calling CryptGenRandom(). Various other RAND-related tickets
2862 *Joseph Wylie Yandle, Rich Salz*
2864 * The stack and lhash API's were renamed to start with `OPENSSL_SK_`
2865 and `OPENSSL_LH_`, respectively. The old names are available
2866 with API compatibility. They new names are now completely documented.
2870 * Unify TYPE_up_ref(obj) methods signature.
2871 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
2872 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
2873 int (instead of void) like all others TYPE_up_ref() methods.
2874 So now these methods also check the return value of CRYPTO_atomic_add(),
2875 and the validity of object reference counter.
2877 *fdasilvayy@gmail.com*
2879 * With Windows Visual Studio builds, the .pdb files are installed
2880 alongside the installed libraries and executables. For a static
2881 library installation, ossl_static.pdb is the associate compiler
2882 generated .pdb file to be used when linking programs.
2886 * Remove openssl.spec. Packaging files belong with the packagers.
2890 * Automatic Darwin/OSX configuration has had a refresh, it will now
2891 recognise x86_64 architectures automatically. You can still decide
2892 to build for a different bitness with the environment variable
2893 KERNEL_BITS (can be 32 or 64), for example:
2895 KERNEL_BITS=32 ./config
2899 * Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
2900 256 bit AES and HMAC with SHA256.
2904 * Remove support for MIPS o32 ABI on IRIX (and IRIX only).
2908 * Triple-DES ciphers have been moved from HIGH to MEDIUM.
2912 * To enable users to have their own config files and build file templates,
2913 Configure looks in the directory indicated by the environment variable
2914 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
2915 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
2916 name and is used as is.
2920 * The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
2921 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
2922 X509_CERT_FILE_CTX was removed.
2926 * "shared" builds are now the default. To create only static libraries use
2927 the "no-shared" Configure option.
2931 * Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
2932 All of these option have not worked for some while and are fundamental
2937 * Make various cleanup routines no-ops and mark them as deprecated. Most
2938 global cleanup functions are no longer required because they are handled
2939 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
2940 Explicitly de-initing can cause problems (e.g. where a library that uses
2941 OpenSSL de-inits, but an application is still using it). The affected
2942 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
2943 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
2944 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
2945 COMP_zlib_cleanup().
2949 * --strict-warnings no longer enables runtime debugging options
2950 such as REF_DEBUG. Instead, debug options are automatically
2951 enabled with '--debug' builds.
2953 *Andy Polyakov, Emilia Käsper*
2955 * Made DH and DH_METHOD opaque. The structures for managing DH objects
2956 have been moved out of the public header files. New functions for managing
2957 these have been added.
2961 * Made RSA and RSA_METHOD opaque. The structures for managing RSA
2962 objects have been moved out of the public header files. New
2963 functions for managing these have been added.
2967 * Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
2968 have been moved out of the public header files. New functions for managing
2969 these have been added.
2973 * Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
2974 moved out of the public header files. New functions for managing these
2979 * Removed no-rijndael as a config option. Rijndael is an old name for AES.
2983 * Removed the mk1mf build scripts.
2987 * Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
2988 it is always safe to #include a header now.
2992 * Removed the aged BC-32 config and all its supporting scripts
2996 * Removed support for Ultrix, Netware, and OS/2.
3000 * Add support for HKDF.
3002 *Alessandro Ghedini*
3004 * Add support for blake2b and blake2s
3008 * Added support for "pipelining". Ciphers that have the
3009 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
3010 encryptions/decryptions simultaneously. There are currently no built-in
3011 ciphers with this property but the expectation is that engines will be able
3012 to offer it to significantly improve throughput. Support has been extended
3013 into libssl so that multiple records for a single connection can be
3014 processed in one go (for >=TLS 1.1).
3018 * Added the AFALG engine. This is an async capable engine which is able to
3019 offload work to the Linux kernel. In this initial version it only supports
3020 AES128-CBC. The kernel must be version 4.1.0 or greater.
3024 * OpenSSL now uses a new threading API. It is no longer necessary to
3025 set locking callbacks to use OpenSSL in a multi-threaded environment. There
3026 are two supported threading models: pthreads and windows threads. It is
3027 also possible to configure OpenSSL at compile time for "no-threads". The
3028 old threading API should no longer be used. The functions have been
3029 replaced with "no-op" compatibility macros.
3031 *Alessandro Ghedini, Matt Caswell*
3033 * Modify behavior of ALPN to invoke callback after SNI/servername
3034 callback, such that updates to the SSL_CTX affect ALPN.
3038 * Add SSL_CIPHER queries for authentication and key-exchange.
3042 * Changes to the DEFAULT cipherlist:
3043 - Prefer (EC)DHE handshakes over plain RSA.
3044 - Prefer AEAD ciphers over legacy ciphers.
3045 - Prefer ECDSA over RSA when both certificates are available.
3046 - Prefer TLSv1.2 ciphers/PRF.
3047 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
3052 * Change the ECC default curve list to be this, in order: x25519,
3053 secp256r1, secp521r1, secp384r1.
3057 * RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
3058 disabled by default. They can be re-enabled using the
3059 enable-weak-ssl-ciphers option to Configure.
3063 * If the server has ALPN configured, but supports no protocols that the
3064 client advertises, send a fatal "no_application_protocol" alert.
3065 This behaviour is SHALL in RFC 7301, though it isn't universally
3066 implemented by other servers.
3070 * Add X25519 support.
3071 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
3072 for public and private key encoding using the format documented in
3073 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
3074 key generation and key derivation.
3076 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
3081 * Deprecate SRP_VBASE_get_by_user.
3082 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
3083 In order to fix an unavoidable memory leak ([CVE-2016-0798]),
3084 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
3085 seed, even if the seed is configured.
3087 Users should use SRP_VBASE_get1_by_user instead. Note that in
3088 SRP_VBASE_get1_by_user, caller must free the returned value. Note
3089 also that even though configuring the SRP seed attempts to hide
3090 invalid usernames by continuing the handshake with fake
3091 credentials, this behaviour is not constant time and no strong
3092 guarantees are made that the handshake is indistinguishable from
3093 that of a valid user.
3097 * Configuration change; it's now possible to build dynamic engines
3098 without having to build shared libraries and vice versa. This
3099 only applies to the engines in engines/, those in crypto/engine/
3100 will always be built into libcrypto (i.e. "static").
3102 Building dynamic engines is enabled by default; to disable, use
3103 the configuration option "disable-dynamic-engine".
3105 The only requirements for building dynamic engines are the
3106 presence of the DSO module and building with position independent
3107 code, so they will also automatically be disabled if configuring
3108 with "disable-dso" or "disable-pic".
3110 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
3111 are also taken away from openssl/opensslconf.h, as they are
3116 * Configuration change; if there is a known flag to compile
3117 position independent code, it will always be applied on the
3118 libcrypto and libssl object files, and never on the application
3119 object files. This means other libraries that use routines from
3120 libcrypto / libssl can be made into shared libraries regardless
3121 of how OpenSSL was configured.
3123 If this isn't desirable, the configuration options "disable-pic"
3124 or "no-pic" can be used to disable the use of PIC. This will
3125 also disable building shared libraries and dynamic engines.
3129 * Removed JPAKE code. It was experimental and has no wide use.
3133 * The INSTALL_PREFIX Makefile variable has been renamed to
3134 DESTDIR. That makes for less confusion on what this variable
3135 is for. Also, the configuration option --install_prefix is
3140 * Heartbeat for TLS has been removed and is disabled by default
3141 for DTLS; configure with enable-heartbeats. Code that uses the
3142 old #define's might need to be updated.
3144 *Emilia Käsper, Rich Salz*
3146 * Rename REF_CHECK to REF_DEBUG.
3150 * New "unified" build system
3152 The "unified" build system is aimed to be a common system for all
3153 platforms we support. With it comes new support for VMS.
3155 This system builds supports building in a different directory tree
3156 than the source tree. It produces one Makefile (for unix family
3157 or lookalikes), or one descrip.mms (for VMS).
3159 The source of information to make the Makefile / descrip.mms is
3160 small files called 'build.info', holding the necessary
3161 information for each directory with source to compile, and a
3162 template in Configurations, like unix-Makefile.tmpl or
3165 With this change, the library names were also renamed on Windows
3166 and on VMS. They now have names that are closer to the standard
3167 on Unix, and include the major version number, and in certain
3168 cases, the architecture they are built for. See "Notes on shared
3169 libraries" in INSTALL.
3171 We rely heavily on the perl module Text::Template.
3175 * Added support for auto-initialisation and de-initialisation of the library.
3176 OpenSSL no longer requires explicit init or deinit routines to be called,
3177 except in certain circumstances. See the OPENSSL_init_crypto() and
3178 OPENSSL_init_ssl() man pages for further information.
3182 * The arguments to the DTLSv1_listen function have changed. Specifically the
3183 "peer" argument is now expected to be a BIO_ADDR object.
3185 * Rewrite of BIO networking library. The BIO library lacked consistent
3186 support of IPv6, and adding it required some more extensive
3187 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
3188 which hold all types of addresses and chains of address information.
3189 It also introduces a new API, with functions like BIO_socket,
3190 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
3191 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
3192 have been adapted accordingly.
3196 * RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
3201 * CRIME protection: disable compression by default, even if OpenSSL is
3202 compiled with zlib enabled. Applications can still enable compression
3203 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
3204 using the SSL_CONF library to configure compression.
3208 * The signature of the session callback configured with
3209 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
3210 was explicitly marked as `const unsigned char*` instead of
3215 * Always DPURIFY. Remove the use of uninitialized memory in the
3216 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
3220 * Removed many obsolete configuration items, including
3221 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
3222 MD2_CHAR, MD2_INT, MD2_LONG
3224 IDEA_SHORT, IDEA_LONG
3225 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
3227 *Rich Salz, with advice from Andy Polyakov*
3229 * Many BN internals have been moved to an internal header file.
3231 *Rich Salz with help from Andy Polyakov*
3233 * Configuration and writing out the results from it has changed.
3234 Files such as Makefile include/openssl/opensslconf.h and are now
3235 produced through general templates, such as Makefile.in and
3236 crypto/opensslconf.h.in and some help from the perl module
3239 Also, the center of configuration information is no longer
3240 Makefile. Instead, Configure produces a perl module in
3241 configdata.pm which holds most of the config data (in the hash
3242 table %config), the target data that comes from the target
3243 configuration in one of the `Configurations/*.conf` files (in
3248 * To clarify their intended purposes, the Configure options
3249 --prefix and --openssldir change their semantics, and become more
3250 straightforward and less interdependent.
3252 --prefix shall be used exclusively to give the location INSTALLTOP
3253 where programs, scripts, libraries, include files and manuals are
3254 going to be installed. The default is now /usr/local.
3256 --openssldir shall be used exclusively to give the default
3257 location OPENSSLDIR where certificates, private keys, CRLs are
3258 managed. This is also where the default openssl.cnf gets
3260 If the directory given with this option is a relative path, the
3261 values of both the --prefix value and the --openssldir value will
3262 be combined to become OPENSSLDIR.
3263 The default for --openssldir is INSTALLTOP/ssl.
3265 Anyone who uses --openssldir to specify where OpenSSL is to be
3266 installed MUST change to use --prefix instead.
3270 * The GOST engine was out of date and therefore it has been removed. An up
3271 to date GOST engine is now being maintained in an external repository.
3272 See: <https://wiki.openssl.org/index.php/Binaries>. Libssl still retains
3273 support for GOST ciphersuites (these are only activated if a GOST engine
3278 * EGD is no longer supported by default; use enable-egd when
3281 *Ben Kaduk and Rich Salz*
3283 * The distribution now has Makefile.in files, which are used to
3284 create Makefile's when Configure is run. *Configure must be run
3285 before trying to build now.*
3289 * The return value for SSL_CIPHER_description() for error conditions
3294 * Support for RFC6698/RFC7671 DANE TLSA peer authentication.
3296 Obtaining and performing DNSSEC validation of TLSA records is
3297 the application's responsibility. The application provides
3298 the TLSA records of its choice to OpenSSL, and these are then
3299 used to authenticate the peer.
3301 The TLSA records need not even come from DNS. They can, for
3302 example, be used to implement local end-entity certificate or
3303 trust-anchor "pinning", where the "pin" data takes the form
3304 of TLSA records, which can augment or replace verification
3305 based on the usual WebPKI public certification authorities.
3309 * Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
3310 continues to support deprecated interfaces in default builds.
3311 However, applications are strongly advised to compile their
3312 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
3313 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
3314 or the 1.1.0 releases.
3316 In environments in which all applications have been ported to
3317 not use any deprecated interfaces OpenSSL's Configure script
3318 should be used with the --api=1.1.0 option to entirely remove
3319 support for the deprecated features from the library and
3320 unconditionally disable them in the installed headers.
3321 Essentially the same effect can be achieved with the "no-deprecated"
3322 argument to Configure, except that this will always restrict
3323 the build to just the latest API, rather than a fixed API
3326 As applications are ported to future revisions of the API,
3327 they should update their compile-time OPENSSL_API_COMPAT define
3328 accordingly, but in most cases should be able to continue to
3329 compile with later releases.
3331 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
3332 0x10000000L and 0x00908000L, respectively. However those
3333 versions did not support the OPENSSL_API_COMPAT feature, and
3334 so applications are not typically tested for explicit support
3335 of just the undeprecated features of either release.
3339 * Add support for setting the minimum and maximum supported protocol.
3340 It can bet set via the SSL_set_min_proto_version() and
3341 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
3342 MaxProtocol. It's recommended to use the new APIs to disable
3343 protocols instead of disabling individual protocols using
3344 SSL_set_options() or SSL_CONF's Protocol. This change also
3345 removes support for disabling TLS 1.2 in the OpenSSL TLS
3346 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
3350 * Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
3354 * New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
3355 and integrates ECDSA and ECDH functionality into EC. Implementations can
3356 now redirect key generation and no longer need to convert to or from
3359 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
3360 include the ec.h header file instead.
3364 * Remove support for all 40 and 56 bit ciphers. This includes all the export
3365 ciphers who are no longer supported and drops support the ephemeral RSA key
3366 exchange. The LOW ciphers currently doesn't have any ciphers in it.
3370 * Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
3371 opaque. For HMAC_CTX, the following constructors and destructors
3374 HMAC_CTX *HMAC_CTX_new(void);
3375 void HMAC_CTX_free(HMAC_CTX *ctx);
3377 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
3378 destroy such methods has been added. See EVP_MD_meth_new(3) and
3379 EVP_CIPHER_meth_new(3) for documentation.
3382 1) `EVP_MD_CTX_cleanup()`, `EVP_CIPHER_CTX_cleanup()` and
3383 `HMAC_CTX_cleanup()` were removed. `HMAC_CTX_reset()` and
3384 `EVP_MD_CTX_reset()` should be called instead to reinitialise
3385 an already created structure.
3386 2) For consistency with the majority of our object creators and
3387 destructors, `EVP_MD_CTX_(create|destroy)` were renamed to
3388 `EVP_MD_CTX_(new|free)`. The old names are retained as macros
3389 for deprecated builds.
3393 * Added ASYNC support. Libcrypto now includes the async sub-library to enable
3394 cryptographic operations to be performed asynchronously as long as an
3395 asynchronous capable engine is used. See the ASYNC_start_job() man page for
3396 further details. Libssl has also had this capability integrated with the
3397 introduction of the new mode SSL_MODE_ASYNC and associated error
3398 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
3399 pages. This work was developed in partnership with Intel Corp.
3403 * SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
3404 always enabled now. If you want to disable the support you should
3405 exclude it using the list of supported ciphers. This also means that the
3406 "-no_ecdhe" option has been removed from s_server.
3410 * SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
3411 SSL_{CTX_}set1_curves() which can set a list.
3415 * Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
3416 curve you want to support using SSL_{CTX_}set1_curves().
3420 * State machine rewrite. The state machine code has been significantly
3421 refactored in order to remove much duplication of code and solve issues
3422 with the old code (see [ssl/statem/README.md](ssl/statem/README.md) for
3423 further details). This change does have some associated API changes.
3424 Notably the SSL_state() function has been removed and replaced by
3425 SSL_get_state which now returns an "OSSL_HANDSHAKE_STATE" instead of an int.
3426 SSL_set_state() has been removed altogether. The previous handshake states
3427 defined in ssl.h and ssl3.h have also been removed.
3431 * All instances of the string "ssleay" in the public API were replaced
3432 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
3433 Some error codes related to internal RSA_eay API's were renamed.
3437 * The demo files in crypto/threads were moved to demo/threads.
3441 * Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
3444 *Matt Caswell, Rich Salz*
3446 * New ASN.1 embed macro.
3448 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
3449 structure is not allocated: it is part of the parent. That is instead of
3457 This reduces memory fragmentation and make it impossible to accidentally
3458 set a mandatory field to NULL.
3460 This currently only works for some fields specifically a SEQUENCE, CHOICE,
3461 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
3462 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
3467 * Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
3471 * Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
3472 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
3473 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
3474 DES and RC4 ciphersuites.
3478 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
3479 This changes the decoding behaviour for some invalid messages,
3480 though the change is mostly in the more lenient direction, and
3481 legacy behaviour is preserved as much as possible.
3485 * Fix no-stdio build.
3486 *David Woodhouse <David.Woodhouse@intel.com> and also*
3487 *Ivan Nestlerode <ivan.nestlerode@sonos.com>*
3489 * New testing framework
3490 The testing framework has been largely rewritten and is now using
3491 perl and the perl modules Test::Harness and an extended variant of
3492 Test::More called OpenSSL::Test to do its work. All test scripts in
3493 test/ have been rewritten into test recipes, and all direct calls to
3494 executables in test/Makefile have become individual recipes using the
3495 simplified testing OpenSSL::Test::Simple.
3497 For documentation on our testing modules, do:
3499 perldoc test/testlib/OpenSSL/Test/Simple.pm
3500 perldoc test/testlib/OpenSSL/Test.pm
3504 * Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
3505 are used; the latter aborts on memory leaks (usually checked on exit).
3506 Some undocumented "set malloc, etc., hooks" functions were removed
3507 and others were changed. All are now documented.
3511 * In DSA_generate_parameters_ex, if the provided seed is too short,
3514 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
3516 * Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
3517 from RFC4279, RFC4785, RFC5487, RFC5489.
3519 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
3520 original RSA_PSK patch.
3524 * Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
3525 era flag was never set throughout the codebase (only read). Also removed
3526 SSL3_FLAGS_POP_BUFFER which was only used if
3527 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
3531 * Changed the default name options in the "ca", "crl", "req" and "x509"
3532 to be "oneline" instead of "compat".
3536 * Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
3537 not aware of clients that still exhibit this bug, and the workaround
3538 hasn't been working properly for a while.
3542 * The return type of BIO_number_read() and BIO_number_written() as well as
3543 the corresponding num_read and num_write members in the BIO structure has
3544 changed from unsigned long to uint64_t. On platforms where an unsigned
3545 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
3550 * Given the pervasive nature of TLS extensions it is inadvisable to run
3551 OpenSSL without support for them. It also means that maintaining
3552 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
3553 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
3557 * Removed support for the two export grade static DH ciphersuites
3558 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
3559 were newly added (along with a number of other static DH ciphersuites) to
3560 1.0.2. However the two export ones have *never* worked since they were
3561 introduced. It seems strange in any case to be adding new export
3562 ciphersuites, and given "logjam" it also does not seem correct to fix them.
3566 * Version negotiation has been rewritten. In particular SSLv23_method(),
3567 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
3568 and turned into macros which simply call the new preferred function names
3569 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
3570 should use the new names instead. Also as part of this change the ssl23.h
3571 header file has been removed.
3575 * Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
3576 code and the associated standard is no longer considered fit-for-purpose.
3580 * RT2547 was closed. When generating a private key, try to make the
3581 output file readable only by the owner. This behavior change might
3582 be noticeable when interacting with other software.
3584 * Documented all exdata functions. Added CRYPTO_free_ex_index.
3589 * Added HTTP GET support to the ocsp command.
3593 * Changed default digest for the dgst and enc commands from MD5 to
3598 * RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
3602 * Added support for TLS extended master secret from
3603 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
3604 initial patch which was a great help during development.
3608 * All libssl internal structures have been removed from the public header
3609 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
3610 now redundant). Users should not attempt to access internal structures
3611 directly. Instead they should use the provided API functions.
3615 * config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
3616 Access to deprecated functions can be re-enabled by running config with
3617 "enable-deprecated". In addition applications wishing to use deprecated
3618 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
3619 will, by default, disable some transitive includes that previously existed
3620 in the header files (e.g. ec.h will no longer, by default, include bn.h)
3624 * Added support for OCB mode. OpenSSL has been granted a patent license
3625 compatible with the OpenSSL license for use of OCB. Details are available
3626 at <https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf>. Support
3627 for OCB can be removed by calling config with no-ocb.
3631 * SSLv2 support has been removed. It still supports receiving a SSLv2
3632 compatible client hello.
3636 * Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
3637 done while fixing the error code for the key-too-small case.
3639 *Annie Yousar <a.yousar@informatik.hu-berlin.de>*
3641 * CA.sh has been removed; use CA.pl instead.
3645 * Removed old DES API.
3649 * Remove various unsupported platforms:
3655 Sinix/ReliantUNIX RM400
3660 16-bit platforms such as WIN16
3664 * Clean up OPENSSL_NO_xxx #define's
3665 - Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
3666 - Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
3667 - OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
3668 - OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
3669 - OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
3670 - Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
3671 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
3672 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
3673 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
3674 - Remove MS_STATIC; it's a relic from platforms <32 bits.
3678 * Cleaned up dead code
3679 Remove all but one '#ifdef undef' which is to be looked at.
3683 * Clean up calling of xxx_free routines.
3684 Just like free(), fix most of the xxx_free routines to accept
3685 NULL. Remove the non-null checks from callers. Save much code.
3689 * Add secure heap for storage of private keys (when possible).
3690 Add BIO_s_secmem(), CBIGNUM, etc.
3691 Contributed by Akamai Technologies under our Corporate CLA.
3695 * Experimental support for a new, fast, unbiased prime candidate generator,
3696 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
3698 *Felix Laurie von Massenbach <felix@erbridge.co.uk>*
3700 * New output format NSS in the sess_id command line tool. This allows
3701 exporting the session id and the master key in NSS keylog format.
3703 *Martin Kaiser <martin@kaiser.cx>*
3705 * Harmonize version and its documentation. -f flag is used to display
3708 *mancha <mancha1@zoho.com>*
3710 * Fix eckey_priv_encode so it immediately returns an error upon a failure
3711 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
3713 *mancha <mancha1@zoho.com>*
3715 * Fix some double frees. These are not thought to be exploitable.
3717 *mancha <mancha1@zoho.com>*
3719 * A missing bounds check in the handling of the TLS heartbeat extension
3720 can be used to reveal up to 64k of memory to a connected client or
3723 Thanks for Neel Mehta of Google Security for discovering this bug and to
3724 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3725 preparing the fix ([CVE-2014-0160])
3727 *Adam Langley, Bodo Moeller*
3729 * Fix for the attack described in the paper "Recovering OpenSSL
3730 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3731 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3732 <http://eprint.iacr.org/2014/140>
3734 Thanks to Yuval Yarom and Naomi Benger for discovering this
3735 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
3737 *Yuval Yarom and Naomi Benger*
3739 * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3740 this fixes a limitation in previous versions of OpenSSL.
3744 * Experimental encrypt-then-mac support.
3746 Experimental support for encrypt then mac from
3747 draft-gutmann-tls-encrypt-then-mac-02.txt
3749 To enable it set the appropriate extension number (0x42 for the test
3750 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
3752 For non-compliant peers (i.e. just about everything) this should have no
3755 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
3759 * Add EVP support for key wrapping algorithms, to avoid problems with
3760 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3761 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3762 algorithms and include tests cases.
3766 * Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
3771 * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3772 MGF1 digest and OAEP label.
3776 * Make openssl verify return errors.
3778 *Chris Palmer <palmer@google.com> and Ben Laurie*
3780 * New function ASN1_TIME_diff to calculate the difference between two
3781 ASN1_TIME structures or one structure and the current time.
3785 * Update fips_test_suite to support multiple command line options. New
3786 test to induce all self test errors in sequence and check expected
3791 * Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
3792 sign or verify all in one operation.
3796 * Add fips_algvs: a multicall fips utility incorporating all the algorithm
3797 test programs and fips_test_suite. Includes functionality to parse
3798 the minimal script output of fipsalgest.pl directly.
3802 * Add authorisation parameter to FIPS_module_mode_set().
3806 * Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
3810 * Use separate DRBG fields for internal and external flags. New function
3811 FIPS_drbg_health_check() to perform on demand health checking. Add
3812 generation tests to fips_test_suite with reduced health check interval to
3813 demonstrate periodic health checking. Add "nodh" option to
3814 fips_test_suite to skip very slow DH test.
3818 * New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
3823 * More extensive health check for DRBG checking many more failure modes.
3824 New function FIPS_selftest_drbg_all() to handle every possible DRBG
3825 combination: call this in fips_test_suite.
3829 * Add support for canonical generation of DSA parameter 'g'. See
3832 * Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
3833 POST to handle HMAC cases.
3837 * Add functions FIPS_module_version() and FIPS_module_version_text()
3838 to return numerical and string versions of the FIPS module number.
3842 * Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
3843 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
3844 outside the validated module in the FIPS capable OpenSSL.
3848 * Minor change to DRBG entropy callback semantics. In some cases
3849 there is no multiple of the block length between min_len and
3850 max_len. Allow the callback to return more than max_len bytes
3851 of entropy but discard any extra: it is the callback's responsibility
3852 to ensure that the extra data discarded does not impact the
3853 requested amount of entropy.
3857 * Add PRNG security strength checks to RSA, DSA and ECDSA using
3858 information in FIPS186-3, SP800-57 and SP800-131A.
3862 * CCM support via EVP. Interface is very similar to GCM case except we
3863 must supply all data in one chunk (i.e. no update, final) and the
3864 message length must be supplied if AAD is used. Add algorithm test
3869 * Initial version of POST overhaul. Add POST callback to allow the status
3870 of POST to be monitored and/or failures induced. Modify fips_test_suite
3871 to use callback. Always run all selftests even if one fails.
3875 * XTS support including algorithm test driver in the fips_gcmtest program.
3876 Note: this does increase the maximum key length from 32 to 64 bytes but
3877 there should be no binary compatibility issues as existing applications
3878 will never use XTS mode.
3882 * Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
3883 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
3884 performs algorithm blocking for unapproved PRNG types. Also do not
3885 set PRNG type in FIPS_mode_set(): leave this to the application.
3886 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
3887 the standard OpenSSL PRNG: set additional data to a date time vector.
3891 * Rename old X9.31 PRNG functions of the form `FIPS_rand*` to `FIPS_x931*`.
3892 This shouldn't present any incompatibility problems because applications
3893 shouldn't be using these directly and any that are will need to rethink
3894 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
3898 * Extensive self tests and health checking required by SP800-90 DRBG.
3899 Remove strength parameter from FIPS_drbg_instantiate and always
3900 instantiate at maximum supported strength.
3904 * Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
3908 * New algorithm test program fips_dhvs to handle DH primitives only testing.
3912 * New function DH_compute_key_padded() to compute a DH key and pad with
3913 leading zeroes if needed: this complies with SP800-56A et al.
3917 * Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
3918 anything, incomplete, subject to change and largely untested at present.
3922 * Modify fipscanisteronly build option to only build the necessary object
3923 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
3927 * Add experimental option FIPSSYMS to give all symbols in
3928 fipscanister.o and FIPS or fips prefix. This will avoid
3929 conflicts with future versions of OpenSSL. Add perl script
3930 util/fipsas.pl to preprocess assembly language source files
3931 and rename any affected symbols.
3935 * Add selftest checks and algorithm block of non-fips algorithms in
3936 FIPS mode. Remove DES2 from selftests.
3940 * Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
3941 return internal method without any ENGINE dependencies. Add new
3942 tiny fips sign and verify functions.
3946 * New build option no-ec2m to disable characteristic 2 code.
3950 * New build option "fipscanisteronly". This only builds fipscanister.o
3951 and (currently) associated fips utilities. Uses the file Makefile.fips
3952 instead of Makefile.org as the prototype.
3956 * Add some FIPS mode restrictions to GCM. Add internal IV generator.
3957 Update fips_gcmtest to use IV generator.
3961 * Initial, experimental EVP support for AES-GCM. AAD can be input by
3962 setting output buffer to NULL. The `*Final` function must be
3963 called although it will not retrieve any additional data. The tag
3964 can be set or retrieved with a ctrl. The IV length is by default 12
3965 bytes (96 bits) but can be set to an alternative value. If the IV
3966 length exceeds the maximum IV length (currently 16 bytes) it cannot be
3971 * New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
3972 underlying do_cipher function handles all cipher semantics itself
3973 including padding and finalisation. This is useful if (for example)
3974 an ENGINE cipher handles block padding itself. The behaviour of
3975 do_cipher is subtly changed if this flag is set: the return value
3976 is the number of characters written to the output buffer (zero is
3977 no longer an error code) or a negative error code. Also if the
3978 input buffer is NULL and length 0 finalisation should be performed.
3982 * If a candidate issuer certificate is already part of the constructed
3983 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
3987 * Improve forward-security support: add functions
3989 void SSL_CTX_set_not_resumable_session_callback(
3990 SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
3991 void SSL_set_not_resumable_session_callback(
3992 SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
3994 for use by SSL/TLS servers; the callback function will be called whenever a
3995 new session is created, and gets to decide whether the session may be
3996 cached to make it resumable (return 0) or not (return 1). (As by the
3997 SSL/TLS protocol specifications, the session_id sent by the server will be
3998 empty to indicate that the session is not resumable; also, the server will
3999 not generate RFC 4507 (RFC 5077) session tickets.)
4001 A simple reasonable callback implementation is to return is_forward_secure.
4002 This parameter will be set to 1 or 0 depending on the ciphersuite selected
4003 by the SSL/TLS server library, indicating whether it can provide forward
4006 *Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)*
4008 * New -verify_name option in command line utilities to set verification
4013 * Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
4014 Add CMAC pkey methods.
4018 * Experimental renegotiation in s_server -www mode. If the client
4019 browses /reneg connection is renegotiated. If /renegcert it is
4020 renegotiated requesting a certificate.
4024 * Add an "external" session cache for debugging purposes to s_server. This
4025 should help trace issues which normally are only apparent in deployed
4026 multi-process servers.
4030 * Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
4031 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
4032 BIO_set_cipher() and some obscure PEM functions were changed so they
4033 can now return an error. The RAND changes required a change to the
4034 RAND_METHOD structure.
4038 * New macro `__owur` for "OpenSSL Warn Unused Result". This makes use of
4039 a gcc attribute to warn if the result of a function is ignored. This
4040 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
4041 whose return value is often ignored.
4045 * New -noct, -requestct, -requirect and -ctlogfile options for s_client.
4046 These allow SCTs (signed certificate timestamps) to be requested and
4047 validated when establishing a connection.
4049 *Rob Percival <robpercival@google.com>*
4054 ### Changes between 1.0.2s and 1.0.2t [10 Sep 2019]
4056 * For built-in EC curves, ensure an EC_GROUP built from the curve name is
4057 used even when parsing explicit parameters, when loading a encoded key
4058 or calling `EC_GROUP_new_from_ecpkparameters()`/
4059 `EC_GROUP_new_from_ecparameters()`.
4060 This prevents bypass of security hardening and performance gains,
4061 especially for curves with specialized EC_METHODs.
4062 By default, if a key encoded with explicit parameters is loaded and later
4063 encoded, the output is still encoded with explicit parameters, even if
4064 internally a "named" EC_GROUP is used for computation.
4068 * Compute ECC cofactors if not provided during EC_GROUP construction. Before
4069 this change, EC_GROUP_set_generator would accept order and/or cofactor as
4070 NULL. After this change, only the cofactor parameter can be NULL. It also
4071 does some minimal sanity checks on the passed order.
4076 * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
4077 An attack is simple, if the first CMS_recipientInfo is valid but the
4078 second CMS_recipientInfo is chosen ciphertext. If the second
4079 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
4080 encryption key will be replaced by garbage, and the message cannot be
4081 decoded, but if the RSA decryption fails, the correct encryption key is
4082 used and the recipient will not notice the attack.
4083 As a work around for this potential attack the length of the decrypted
4084 key must be equal to the cipher default key length, in case the
4085 certifiate is not given and all recipientInfo are tried out.
4086 The old behaviour can be re-enabled in the CMS code by setting the
4087 CMS_DEBUG_DECRYPT flag.
4092 * Document issue with installation paths in diverse Windows builds
4094 '/usr/local/ssl' is an unsafe prefix for location to install OpenSSL
4095 binaries and run-time config file.
4100 ### Changes between 1.0.2r and 1.0.2s [28 May 2019]
4102 * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
4103 This changes the size when using the genpkey app when no size is given. It
4104 fixes an omission in earlier changes that changed all RSA, DSA and DH
4105 generation apps to use 2048 bits by default.
4109 * Add FIPS support for Android Arm 64-bit
4111 Support for Android Arm 64-bit was added to the OpenSSL FIPS Object
4112 Module in Version 2.0.10. For some reason, the corresponding target
4113 'android64-aarch64' was missing OpenSSL 1.0.2, whence it could not be
4114 built with FIPS support on Android Arm 64-bit. This omission has been
4117 *Matthias St. Pierre*
4119 ### Changes between 1.0.2q and 1.0.2r [26 Feb 2019]
4121 * 0-byte record padding oracle
4123 If an application encounters a fatal protocol error and then calls
4124 SSL_shutdown() twice (once to send a close_notify, and once to receive one)
4125 then OpenSSL can respond differently to the calling application if a 0 byte
4126 record is received with invalid padding compared to if a 0 byte record is
4127 received with an invalid MAC. If the application then behaves differently
4128 based on that in a way that is detectable to the remote peer, then this
4129 amounts to a padding oracle that could be used to decrypt data.
4131 In order for this to be exploitable "non-stitched" ciphersuites must be in
4132 use. Stitched ciphersuites are optimised implementations of certain
4133 commonly used ciphersuites. Also the application must call SSL_shutdown()
4134 twice even if a protocol error has occurred (applications should not do
4135 this but some do anyway).
4137 This issue was discovered by Juraj Somorovsky, Robert Merget and Nimrod
4138 Aviram, with additional investigation by Steven Collison and Andrew
4139 Hourselt. It was reported to OpenSSL on 10th December 2018.
4144 * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
4148 ### Changes between 1.0.2p and 1.0.2q [20 Nov 2018]
4150 * Microarchitecture timing vulnerability in ECC scalar multiplication
4152 OpenSSL ECC scalar multiplication, used in e.g. ECDSA and ECDH, has been
4153 shown to be vulnerable to a microarchitecture timing side channel attack.
4154 An attacker with sufficient access to mount local timing attacks during
4155 ECDSA signature generation could recover the private key.
4157 This issue was reported to OpenSSL on 26th October 2018 by Alejandro
4158 Cabrera Aldaya, Billy Brumley, Sohaib ul Hassan, Cesar Pereida Garcia and
4164 * Timing vulnerability in DSA signature generation
4166 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
4167 timing side channel attack. An attacker could use variations in the signing
4168 algorithm to recover the private key.
4170 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
4175 * Resolve a compatibility issue in EC_GROUP handling with the FIPS Object
4176 Module, accidentally introduced while backporting security fixes from the
4177 development branch and hindering the use of ECC in FIPS mode.
4181 ### Changes between 1.0.2o and 1.0.2p [14 Aug 2018]
4183 * Client DoS due to large DH parameter
4185 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
4186 malicious server can send a very large prime value to the client. This will
4187 cause the client to spend an unreasonably long period of time generating a
4188 key for this prime resulting in a hang until the client has finished. This
4189 could be exploited in a Denial Of Service attack.
4191 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
4196 * Cache timing vulnerability in RSA Key Generation
4198 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
4199 a cache timing side channel attack. An attacker with sufficient access to
4200 mount cache timing attacks during the RSA key generation process could
4201 recover the private key.
4203 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
4204 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
4209 * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
4210 parameter is no longer accepted, as it leads to a corrupt table. NULL
4211 pem_str is reserved for alias entries only.
4215 * Revert blinding in ECDSA sign and instead make problematic addition
4216 length-invariant. Switch even to fixed-length Montgomery multiplication.
4220 * Change generating and checking of primes so that the error rate of not
4221 being prime depends on the intended use based on the size of the input.
4222 For larger primes this will result in more rounds of Miller-Rabin.
4223 The maximal error rate for primes with more than 1080 bits is lowered
4226 *Kurt Roeckx, Annie Yousar*
4228 * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
4232 * Add blinding to ECDSA and DSA signatures to protect against side channel
4233 attacks discovered by Keegan Ryan (NCC Group).
4237 * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
4238 now allow empty (zero character) pass phrases.
4242 * Certificate time validation (X509_cmp_time) enforces stricter
4243 compliance with RFC 5280. Fractional seconds and timezone offsets
4244 are no longer allowed.
4248 ### Changes between 1.0.2n and 1.0.2o [27 Mar 2018]
4250 * Constructed ASN.1 types with a recursive definition could exceed the stack
4252 Constructed ASN.1 types with a recursive definition (such as can be found
4253 in PKCS7) could eventually exceed the stack given malicious input with
4254 excessive recursion. This could result in a Denial Of Service attack. There
4255 are no such structures used within SSL/TLS that come from untrusted sources
4256 so this is considered safe.
4258 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
4264 ### Changes between 1.0.2m and 1.0.2n [7 Dec 2017]
4266 * Read/write after SSL object in error state
4268 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state"
4269 mechanism. The intent was that if a fatal error occurred during a handshake
4270 then OpenSSL would move into the error state and would immediately fail if
4271 you attempted to continue the handshake. This works as designed for the
4272 explicit handshake functions (SSL_do_handshake(), SSL_accept() and
4273 SSL_connect()), however due to a bug it does not work correctly if
4274 SSL_read() or SSL_write() is called directly. In that scenario, if the
4275 handshake fails then a fatal error will be returned in the initial function
4276 call. If SSL_read()/SSL_write() is subsequently called by the application
4277 for the same SSL object then it will succeed and the data is passed without
4278 being decrypted/encrypted directly from the SSL/TLS record layer.
4280 In order to exploit this issue an application bug would have to be present
4281 that resulted in a call to SSL_read()/SSL_write() being issued after having
4282 already received a fatal error.
4284 This issue was reported to OpenSSL by David Benjamin (Google).
4289 * rsaz_1024_mul_avx2 overflow bug on x86_64
4291 There is an overflow bug in the AVX2 Montgomery multiplication procedure
4292 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
4293 Analysis suggests that attacks against RSA and DSA as a result of this
4294 defect would be very difficult to perform and are not believed likely.
4295 Attacks against DH1024 are considered just feasible, because most of the
4296 work necessary to deduce information about a private key may be performed
4297 offline. The amount of resources required for such an attack would be
4298 significant. However, for an attack on TLS to be meaningful, the server
4299 would have to share the DH1024 private key among multiple clients, which is
4300 no longer an option since CVE-2016-0701.
4302 This only affects processors that support the AVX2 but not ADX extensions
4303 like Intel Haswell (4th generation).
4305 This issue was reported to OpenSSL by David Benjamin (Google). The issue
4306 was originally found via the OSS-Fuzz project.
4311 ### Changes between 1.0.2l and 1.0.2m [2 Nov 2017]
4313 * bn_sqrx8x_internal carry bug on x86_64
4315 There is a carry propagating bug in the x86_64 Montgomery squaring
4316 procedure. No EC algorithms are affected. Analysis suggests that attacks
4317 against RSA and DSA as a result of this defect would be very difficult to
4318 perform and are not believed likely. Attacks against DH are considered just
4319 feasible (although very difficult) because most of the work necessary to
4320 deduce information about a private key may be performed offline. The amount
4321 of resources required for such an attack would be very significant and
4322 likely only accessible to a limited number of attackers. An attacker would
4323 additionally need online access to an unpatched system using the target
4324 private key in a scenario with persistent DH parameters and a private
4325 key that is shared between multiple clients.
4327 This only affects processors that support the BMI1, BMI2 and ADX extensions
4328 like Intel Broadwell (5th generation) and later or AMD Ryzen.
4330 This issue was reported to OpenSSL by the OSS-Fuzz project.
4335 * Malformed X.509 IPAddressFamily could cause OOB read
4337 If an X.509 certificate has a malformed IPAddressFamily extension,
4338 OpenSSL could do a one-byte buffer overread. The most likely result
4339 would be an erroneous display of the certificate in text format.
4341 This issue was reported to OpenSSL by the OSS-Fuzz project.
4346 ### Changes between 1.0.2k and 1.0.2l [25 May 2017]
4348 * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
4349 platform rather than 'mingw'.
4353 ### Changes between 1.0.2j and 1.0.2k [26 Jan 2017]
4355 * Truncated packet could crash via OOB read
4357 If one side of an SSL/TLS path is running on a 32-bit host and a specific
4358 cipher is being used, then a truncated packet can cause that host to
4359 perform an out-of-bounds read, usually resulting in a crash.
4361 This issue was reported to OpenSSL by Robert Święcki of Google.
4366 * BN_mod_exp may produce incorrect results on x86_64
4368 There is a carry propagating bug in the x86_64 Montgomery squaring
4369 procedure. No EC algorithms are affected. Analysis suggests that attacks
4370 against RSA and DSA as a result of this defect would be very difficult to
4371 perform and are not believed likely. Attacks against DH are considered just
4372 feasible (although very difficult) because most of the work necessary to
4373 deduce information about a private key may be performed offline. The amount
4374 of resources required for such an attack would be very significant and
4375 likely only accessible to a limited number of attackers. An attacker would
4376 additionally need online access to an unpatched system using the target
4377 private key in a scenario with persistent DH parameters and a private
4378 key that is shared between multiple clients. For example this can occur by
4379 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
4380 similar to CVE-2015-3193 but must be treated as a separate problem.
4382 This issue was reported to OpenSSL by the OSS-Fuzz project.
4387 * Montgomery multiplication may produce incorrect results
4389 There is a carry propagating bug in the Broadwell-specific Montgomery
4390 multiplication procedure that handles input lengths divisible by, but
4391 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
4392 and DH private keys are impossible. This is because the subroutine in
4393 question is not used in operations with the private key itself and an input
4394 of the attacker's direct choice. Otherwise the bug can manifest itself as
4395 transient authentication and key negotiation failures or reproducible
4396 erroneous outcome of public-key operations with specially crafted input.
4397 Among EC algorithms only Brainpool P-512 curves are affected and one
4398 presumably can attack ECDH key negotiation. Impact was not analyzed in
4399 detail, because pre-requisites for attack are considered unlikely. Namely
4400 multiple clients have to choose the curve in question and the server has to
4401 share the private key among them, neither of which is default behaviour.
4402 Even then only clients that chose the curve will be affected.
4404 This issue was publicly reported as transient failures and was not
4405 initially recognized as a security issue. Thanks to Richard Morgan for
4406 providing reproducible case.
4411 * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
4412 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
4413 prevent issues where no progress is being made and the peer continually
4414 sends unrecognised record types, using up resources processing them.
4418 ### Changes between 1.0.2i and 1.0.2j [26 Sep 2016]
4420 * Missing CRL sanity check
4422 A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
4423 but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
4424 CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.
4426 This issue only affects the OpenSSL 1.0.2i
4431 ### Changes between 1.0.2h and 1.0.2i [22 Sep 2016]
4433 * OCSP Status Request extension unbounded memory growth
4435 A malicious client can send an excessively large OCSP Status Request
4436 extension. If that client continually requests renegotiation, sending a
4437 large OCSP Status Request extension each time, then there will be unbounded
4438 memory growth on the server. This will eventually lead to a Denial Of
4439 Service attack through memory exhaustion. Servers with a default
4440 configuration are vulnerable even if they do not support OCSP. Builds using
4441 the "no-ocsp" build time option are not affected.
4443 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4448 * In order to mitigate the SWEET32 attack, the DES ciphers were moved from
4451 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
4457 * OOB write in MDC2_Update()
4459 An overflow can occur in MDC2_Update() either if called directly or
4460 through the EVP_DigestUpdate() function using MDC2. If an attacker
4461 is able to supply very large amounts of input data after a previous
4462 call to EVP_EncryptUpdate() with a partial block then a length check
4463 can overflow resulting in a heap corruption.
4465 The amount of data needed is comparable to SIZE_MAX which is impractical
4468 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4473 * Malformed SHA512 ticket DoS
4475 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
4476 DoS attack where a malformed ticket will result in an OOB read which will
4479 The use of SHA512 in TLS session tickets is comparatively rare as it requires
4480 a custom server callback and ticket lookup mechanism.
4482 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4487 * OOB write in BN_bn2dec()
4489 The function BN_bn2dec() does not check the return value of BN_div_word().
4490 This can cause an OOB write if an application uses this function with an
4491 overly large BIGNUM. This could be a problem if an overly large certificate
4492 or CRL is printed out from an untrusted source. TLS is not affected because
4493 record limits will reject an oversized certificate before it is parsed.
4495 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4500 * OOB read in TS_OBJ_print_bio()
4502 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
4503 the total length the OID text representation would use and not the amount
4504 of data written. This will result in OOB reads when large OIDs are
4507 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4512 * Pointer arithmetic undefined behaviour
4514 Avoid some undefined pointer arithmetic
4516 A common idiom in the codebase is to check limits in the following manner:
4519 Where "p" points to some malloc'd data of SIZE bytes and
4522 "len" here could be from some externally supplied data (e.g. from a TLS
4525 The rules of C pointer arithmetic are such that "p + len" is only well
4526 defined where len <= SIZE. Therefore the above idiom is actually
4527 undefined behaviour.
4529 For example this could cause problems if some malloc implementation
4530 provides an address for "p" such that "p + len" actually overflows for
4531 values of len that are too big and therefore p + len < limit.
4533 This issue was reported to OpenSSL by Guido Vranken
4538 * Constant time flag not preserved in DSA signing
4540 Operations in the DSA signing algorithm should run in constant time in
4541 order to avoid side channel attacks. A flaw in the OpenSSL DSA
4542 implementation means that a non-constant time codepath is followed for
4543 certain operations. This has been demonstrated through a cache-timing
4544 attack to be sufficient for an attacker to recover the private DSA key.
4546 This issue was reported by César Pereida (Aalto University), Billy Brumley
4547 (Tampere University of Technology), and Yuval Yarom (The University of
4548 Adelaide and NICTA).
4553 * DTLS buffered message DoS
4555 In a DTLS connection where handshake messages are delivered out-of-order
4556 those messages that OpenSSL is not yet ready to process will be buffered
4557 for later use. Under certain circumstances, a flaw in the logic means that
4558 those messages do not get removed from the buffer even though the handshake
4559 has been completed. An attacker could force up to approx. 15 messages to
4560 remain in the buffer when they are no longer required. These messages will
4561 be cleared when the DTLS connection is closed. The default maximum size for
4562 a message is 100k. Therefore the attacker could force an additional 1500k
4563 to be consumed per connection. By opening many simulataneous connections an
4564 attacker could cause a DoS attack through memory exhaustion.
4566 This issue was reported to OpenSSL by Quan Luo.
4571 * DTLS replay protection DoS
4573 A flaw in the DTLS replay attack protection mechanism means that records
4574 that arrive for future epochs update the replay protection "window" before
4575 the MAC for the record has been validated. This could be exploited by an
4576 attacker by sending a record for the next epoch (which does not have to
4577 decrypt or have a valid MAC), with a very large sequence number. This means
4578 that all subsequent legitimate packets are dropped causing a denial of
4579 service for a specific DTLS connection.
4581 This issue was reported to OpenSSL by the OCAP audit team.
4586 * Certificate message OOB reads
4588 In OpenSSL 1.0.2 and earlier some missing message length checks can result
4589 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
4590 theoretical DoS risk but this has not been observed in practice on common
4593 The messages affected are client certificate, client certificate request
4594 and server certificate. As a result the attack can only be performed
4595 against a client or a server which enables client authentication.
4597 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
4602 ### Changes between 1.0.2g and 1.0.2h [3 May 2016]
4604 * Prevent padding oracle in AES-NI CBC MAC check
4606 A MITM attacker can use a padding oracle attack to decrypt traffic
4607 when the connection uses an AES CBC cipher and the server support
4610 This issue was introduced as part of the fix for Lucky 13 padding
4611 attack ([CVE-2013-0169]). The padding check was rewritten to be in
4612 constant time by making sure that always the same bytes are read and
4613 compared against either the MAC or padding bytes. But it no longer
4614 checked that there was enough data to have both the MAC and padding
4617 This issue was reported by Juraj Somorovsky using TLS-Attacker.
4622 * Fix EVP_EncodeUpdate overflow
4624 An overflow can occur in the EVP_EncodeUpdate() function which is used for
4625 Base64 encoding of binary data. If an attacker is able to supply very large
4626 amounts of input data then a length check can overflow resulting in a heap
4629 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
4630 the `PEM_write_bio*` family of functions. These are mainly used within the
4631 OpenSSL command line applications, so any application which processes data
4632 from an untrusted source and outputs it as a PEM file should be considered
4633 vulnerable to this issue. User applications that call these APIs directly
4634 with large amounts of untrusted data may also be vulnerable.
4636 This issue was reported by Guido Vranken.
4641 * Fix EVP_EncryptUpdate overflow
4643 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
4644 is able to supply very large amounts of input data after a previous call to
4645 EVP_EncryptUpdate() with a partial block then a length check can overflow
4646 resulting in a heap corruption. Following an analysis of all OpenSSL
4647 internal usage of the EVP_EncryptUpdate() function all usage is one of two
4648 forms. The first form is where the EVP_EncryptUpdate() call is known to be
4649 the first called function after an EVP_EncryptInit(), and therefore that
4650 specific call must be safe. The second form is where the length passed to
4651 EVP_EncryptUpdate() can be seen from the code to be some small value and
4652 therefore there is no possibility of an overflow. Since all instances are
4653 one of these two forms, it is believed that there can be no overflows in
4654 internal code due to this problem. It should be noted that
4655 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
4656 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
4657 of these calls have also been analysed too and it is believed there are no
4658 instances in internal usage where an overflow could occur.
4660 This issue was reported by Guido Vranken.
4665 * Prevent ASN.1 BIO excessive memory allocation
4667 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
4668 a short invalid encoding can cause allocation of large amounts of memory
4669 potentially consuming excessive resources or exhausting memory.
4671 Any application parsing untrusted data through d2i BIO functions is
4672 affected. The memory based functions such as d2i_X509() are *not* affected.
4673 Since the memory based functions are used by the TLS library, TLS
4674 applications are not affected.
4676 This issue was reported by Brian Carpenter.
4683 ASN1 Strings that are over 1024 bytes can cause an overread in applications
4684 using the X509_NAME_oneline() function on EBCDIC systems. This could result
4685 in arbitrary stack data being returned in the buffer.
4687 This issue was reported by Guido Vranken.
4692 * Modify behavior of ALPN to invoke callback after SNI/servername
4693 callback, such that updates to the SSL_CTX affect ALPN.
4697 * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
4702 * Only remove the SSLv2 methods with the no-ssl2-method option. When the
4703 methods are enabled and ssl2 is disabled the methods return NULL.
4707 ### Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
4709 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
4710 Builds that are not configured with "enable-weak-ssl-ciphers" will not
4711 provide any "EXPORT" or "LOW" strength ciphers.
4715 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
4716 is by default disabled at build-time. Builds that are not configured with
4717 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
4718 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
4719 will need to explicitly call either of:
4721 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
4723 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
4725 as appropriate. Even if either of those is used, or the application
4726 explicitly uses the version-specific SSLv2_method() or its client and
4727 server variants, SSLv2 ciphers vulnerable to exhaustive search key
4728 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
4729 ciphers, and SSLv2 56-bit DES are no longer available.
4734 * Fix a double-free in DSA code
4736 A double free bug was discovered when OpenSSL parses malformed DSA private
4737 keys and could lead to a DoS attack or memory corruption for applications
4738 that receive DSA private keys from untrusted sources. This scenario is
4741 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
4747 * Disable SRP fake user seed to address a server memory leak.
4749 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
4751 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
4752 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
4753 was changed to ignore the "fake user" SRP seed, even if the seed
4756 Users should use SRP_VBASE_get1_by_user instead. Note that in
4757 SRP_VBASE_get1_by_user, caller must free the returned value. Note
4758 also that even though configuring the SRP seed attempts to hide
4759 invalid usernames by continuing the handshake with fake
4760 credentials, this behaviour is not constant time and no strong
4761 guarantees are made that the handshake is indistinguishable from
4762 that of a valid user.
4767 * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
4769 In the BN_hex2bn function the number of hex digits is calculated using an
4770 int value `i`. Later `bn_expand` is called with a value of `i * 4`. For
4771 large values of `i` this can result in `bn_expand` not allocating any
4772 memory because `i * 4` is negative. This can leave the internal BIGNUM data
4773 field as NULL leading to a subsequent NULL ptr deref. For very large values
4774 of `i`, the calculation `i * 4` could be a positive value smaller than `i`.
4775 In this case memory is allocated to the internal BIGNUM data field, but it
4776 is insufficiently sized leading to heap corruption. A similar issue exists
4777 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
4778 is ever called by user applications with very large untrusted hex/dec data.
4779 This is anticipated to be a rare occurrence.
4781 All OpenSSL internal usage of these functions use data that is not expected
4782 to be untrusted, e.g. config file data or application command line
4783 arguments. If user developed applications generate config file data based
4784 on untrusted data then it is possible that this could also lead to security
4785 consequences. This is also anticipated to be rare.
4787 This issue was reported to OpenSSL by Guido Vranken.
4792 * Fix memory issues in `BIO_*printf` functions
4794 The internal `fmtstr` function used in processing a "%s" format string in
4795 the `BIO_*printf` functions could overflow while calculating the length of a
4796 string and cause an OOB read when printing very long strings.
4798 Additionally the internal `doapr_outch` function can attempt to write to an
4799 OOB memory location (at an offset from the NULL pointer) in the event of a
4800 memory allocation failure. In 1.0.2 and below this could be caused where
4801 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
4802 could be in processing a very long "%s" format string. Memory leaks can
4805 The first issue may mask the second issue dependent on compiler behaviour.
4806 These problems could enable attacks where large amounts of untrusted data
4807 is passed to the `BIO_*printf` functions. If applications use these functions
4808 in this way then they could be vulnerable. OpenSSL itself uses these
4809 functions when printing out human-readable dumps of ASN.1 data. Therefore
4810 applications that print this data could be vulnerable if the data is from
4811 untrusted sources. OpenSSL command line applications could also be
4812 vulnerable where they print out ASN.1 data, or if untrusted data is passed
4813 as command line arguments.
4815 Libssl is not considered directly vulnerable. Additionally certificates etc
4816 received via remote connections via libssl are also unlikely to be able to
4817 trigger these issues because of message size limits enforced within libssl.
4819 This issue was reported to OpenSSL Guido Vranken.
4824 * Side channel attack on modular exponentiation
4826 A side-channel attack was found which makes use of cache-bank conflicts on
4827 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
4828 of RSA keys. The ability to exploit this issue is limited as it relies on
4829 an attacker who has control of code in a thread running on the same
4830 hyper-threaded core as the victim thread which is performing decryptions.
4832 This issue was reported to OpenSSL by Yuval Yarom, The University of
4833 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
4834 Nadia Heninger, University of Pennsylvania with more information at
4835 <http://cachebleed.info>.
4840 * Change the req app to generate a 2048-bit RSA/DSA key by default,
4841 if no keysize is specified with default_bits. This fixes an
4842 omission in an earlier change that changed all RSA/DSA key generation
4843 apps to use 2048 bits by default.
4847 ### Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
4849 * DH small subgroups
4851 Historically OpenSSL only ever generated DH parameters based on "safe"
4852 primes. More recently (in version 1.0.2) support was provided for
4853 generating X9.42 style parameter files such as those required for RFC 5114
4854 support. The primes used in such files may not be "safe". Where an
4855 application is using DH configured with parameters based on primes that are
4856 not "safe" then an attacker could use this fact to find a peer's private
4857 DH exponent. This attack requires that the attacker complete multiple
4858 handshakes in which the peer uses the same private DH exponent. For example
4859 this could be used to discover a TLS server's private DH exponent if it's
4860 reusing the private DH exponent or it's using a static DH ciphersuite.
4862 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
4863 TLS. It is not on by default. If the option is not set then the server
4864 reuses the same private DH exponent for the life of the server process and
4865 would be vulnerable to this attack. It is believed that many popular
4866 applications do set this option and would therefore not be at risk.
4868 The fix for this issue adds an additional check where a "q" parameter is
4869 available (as is the case in X9.42 based parameters). This detects the
4870 only known attack, and is the only possible defense for static DH
4871 ciphersuites. This could have some performance impact.
4873 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
4874 default and cannot be disabled. This could have some performance impact.
4876 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
4881 * SSLv2 doesn't block disabled ciphers
4883 A malicious client can negotiate SSLv2 ciphers that have been disabled on
4884 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
4885 been disabled, provided that the SSLv2 protocol was not also disabled via
4888 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
4889 and Sebastian Schinzel.
4894 ### Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
4896 * BN_mod_exp may produce incorrect results on x86_64
4898 There is a carry propagating bug in the x86_64 Montgomery squaring
4899 procedure. No EC algorithms are affected. Analysis suggests that attacks
4900 against RSA and DSA as a result of this defect would be very difficult to
4901 perform and are not believed likely. Attacks against DH are considered just
4902 feasible (although very difficult) because most of the work necessary to
4903 deduce information about a private key may be performed offline. The amount
4904 of resources required for such an attack would be very significant and
4905 likely only accessible to a limited number of attackers. An attacker would
4906 additionally need online access to an unpatched system using the target
4907 private key in a scenario with persistent DH parameters and a private
4908 key that is shared between multiple clients. For example this can occur by
4909 default in OpenSSL DHE based SSL/TLS ciphersuites.
4911 This issue was reported to OpenSSL by Hanno Böck.
4916 * Certificate verify crash with missing PSS parameter
4918 The signature verification routines will crash with a NULL pointer
4919 dereference if presented with an ASN.1 signature using the RSA PSS
4920 algorithm and absent mask generation function parameter. Since these
4921 routines are used to verify certificate signature algorithms this can be
4922 used to crash any certificate verification operation and exploited in a
4923 DoS attack. Any application which performs certificate verification is
4924 vulnerable including OpenSSL clients and servers which enable client
4927 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
4932 * X509_ATTRIBUTE memory leak
4934 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
4935 memory. This structure is used by the PKCS#7 and CMS routines so any
4936 application which reads PKCS#7 or CMS data from untrusted sources is
4937 affected. SSL/TLS is not affected.
4939 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
4945 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
4946 This changes the decoding behaviour for some invalid messages,
4947 though the change is mostly in the more lenient direction, and
4948 legacy behaviour is preserved as much as possible.
4952 * In DSA_generate_parameters_ex, if the provided seed is too short,
4955 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
4957 ### Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
4959 * Alternate chains certificate forgery
4961 During certificate verification, OpenSSL will attempt to find an
4962 alternative certificate chain if the first attempt to build such a chain
4963 fails. An error in the implementation of this logic can mean that an
4964 attacker could cause certain checks on untrusted certificates to be
4965 bypassed, such as the CA flag, enabling them to use a valid leaf
4966 certificate to act as a CA and "issue" an invalid certificate.
4968 This issue was reported to OpenSSL by Adam Langley/David Benjamin
4973 ### Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
4975 * Fix HMAC ABI incompatibility. The previous version introduced an ABI
4976 incompatibility in the handling of HMAC. The previous ABI has now been
4981 ### Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
4983 * Malformed ECParameters causes infinite loop
4985 When processing an ECParameters structure OpenSSL enters an infinite loop
4986 if the curve specified is over a specially malformed binary polynomial
4989 This can be used to perform denial of service against any
4990 system which processes public keys, certificate requests or
4991 certificates. This includes TLS clients and TLS servers with
4992 client authentication enabled.
4994 This issue was reported to OpenSSL by Joseph Barr-Pixton.
4999 * Exploitable out-of-bounds read in X509_cmp_time
5001 X509_cmp_time does not properly check the length of the ASN1_TIME
5002 string and can read a few bytes out of bounds. In addition,
5003 X509_cmp_time accepts an arbitrary number of fractional seconds in the
5006 An attacker can use this to craft malformed certificates and CRLs of
5007 various sizes and potentially cause a segmentation fault, resulting in
5008 a DoS on applications that verify certificates or CRLs. TLS clients
5009 that verify CRLs are affected. TLS clients and servers with client
5010 authentication enabled may be affected if they use custom verification
5013 This issue was reported to OpenSSL by Robert Swiecki (Google), and
5014 independently by Hanno Böck.
5019 * PKCS7 crash with missing EnvelopedContent
5021 The PKCS#7 parsing code does not handle missing inner EncryptedContent
5022 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
5023 with missing content and trigger a NULL pointer dereference on parsing.
5025 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
5026 structures from untrusted sources are affected. OpenSSL clients and
5027 servers are not affected.
5029 This issue was reported to OpenSSL by Michal Zalewski (Google).
5034 * CMS verify infinite loop with unknown hash function
5036 When verifying a signedData message the CMS code can enter an infinite loop
5037 if presented with an unknown hash function OID. This can be used to perform
5038 denial of service against any system which verifies signedData messages using
5040 This issue was reported to OpenSSL by Johannes Bauer.
5045 * Race condition handling NewSessionTicket
5047 If a NewSessionTicket is received by a multi-threaded client when attempting to
5048 reuse a previous ticket then a race condition can occur potentially leading to
5049 a double free of the ticket data.
5054 * Only support 256-bit or stronger elliptic curves with the
5055 'ecdh_auto' setting (server) or by default (client). Of supported
5056 curves, prefer P-256 (both).
5060 ### Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
5062 * ClientHello sigalgs DoS fix
5064 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
5065 invalid signature algorithms extension a NULL pointer dereference will
5066 occur. This can be exploited in a DoS attack against the server.
5068 This issue was was reported to OpenSSL by David Ramos of Stanford
5072 *Stephen Henson and Matt Caswell*
5074 * Multiblock corrupted pointer fix
5076 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
5077 feature only applies on 64 bit x86 architecture platforms that support AES
5078 NI instructions. A defect in the implementation of "multiblock" can cause
5079 OpenSSL's internal write buffer to become incorrectly set to NULL when
5080 using non-blocking IO. Typically, when the user application is using a
5081 socket BIO for writing, this will only result in a failed connection.
5082 However if some other BIO is used then it is likely that a segmentation
5083 fault will be triggered, thus enabling a potential DoS attack.
5085 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
5090 * Segmentation fault in DTLSv1_listen fix
5092 The DTLSv1_listen function is intended to be stateless and processes the
5093 initial ClientHello from many peers. It is common for user code to loop
5094 over the call to DTLSv1_listen until a valid ClientHello is received with
5095 an associated cookie. A defect in the implementation of DTLSv1_listen means
5096 that state is preserved in the SSL object from one invocation to the next
5097 that can lead to a segmentation fault. Errors processing the initial
5098 ClientHello can trigger this scenario. An example of such an error could be
5099 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
5102 This issue was reported to OpenSSL by Per Allansson.
5107 * Segmentation fault in ASN1_TYPE_cmp fix
5109 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
5110 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
5111 certificate signature algorithm consistency this can be used to crash any
5112 certificate verification operation and exploited in a DoS attack. Any
5113 application which performs certificate verification is vulnerable including
5114 OpenSSL clients and servers which enable client authentication.
5119 * Segmentation fault for invalid PSS parameters fix
5121 The signature verification routines will crash with a NULL pointer
5122 dereference if presented with an ASN.1 signature using the RSA PSS
5123 algorithm and invalid parameters. Since these routines are used to verify
5124 certificate signature algorithms this can be used to crash any
5125 certificate verification operation and exploited in a DoS attack. Any
5126 application which performs certificate verification is vulnerable including
5127 OpenSSL clients and servers which enable client authentication.
5129 This issue was was reported to OpenSSL by Brian Carpenter.
5134 * ASN.1 structure reuse memory corruption fix
5136 Reusing a structure in ASN.1 parsing may allow an attacker to cause
5137 memory corruption via an invalid write. Such reuse is and has been
5138 strongly discouraged and is believed to be rare.
5140 Applications that parse structures containing CHOICE or ANY DEFINED BY
5141 components may be affected. Certificate parsing (d2i_X509 and related
5142 functions) are however not affected. OpenSSL clients and servers are
5148 * PKCS7 NULL pointer dereferences fix
5150 The PKCS#7 parsing code does not handle missing outer ContentInfo
5151 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
5152 missing content and trigger a NULL pointer dereference on parsing.
5154 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
5155 otherwise parse PKCS#7 structures from untrusted sources are
5156 affected. OpenSSL clients and servers are not affected.
5158 This issue was reported to OpenSSL by Michal Zalewski (Google).
5163 * DoS via reachable assert in SSLv2 servers fix
5165 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
5166 servers that both support SSLv2 and enable export cipher suites by sending
5167 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
5169 This issue was discovered by Sean Burford (Google) and Emilia Käsper
5170 (OpenSSL development team).
5175 * Empty CKE with client auth and DHE fix
5177 If client auth is used then a server can seg fault in the event of a DHE
5178 ciphersuite being selected and a zero length ClientKeyExchange message
5179 being sent by the client. This could be exploited in a DoS attack.
5184 * Handshake with unseeded PRNG fix
5186 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
5187 with an unseeded PRNG. The conditions are:
5188 - The client is on a platform where the PRNG has not been seeded
5189 automatically, and the user has not seeded manually
5190 - A protocol specific client method version has been used (i.e. not
5191 SSL_client_methodv23)
5192 - A ciphersuite is used that does not require additional random data from
5193 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
5195 If the handshake succeeds then the client random that has been used will
5196 have been generated from a PRNG with insufficient entropy and therefore the
5197 output may be predictable.
5199 For example using the following command with an unseeded openssl will
5200 succeed on an unpatched platform:
5202 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
5207 * Use After Free following d2i_ECPrivatekey error fix
5209 A malformed EC private key file consumed via the d2i_ECPrivateKey function
5210 could cause a use after free condition. This, in turn, could cause a double
5211 free in several private key parsing functions (such as d2i_PrivateKey
5212 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
5213 for applications that receive EC private keys from untrusted
5214 sources. This scenario is considered rare.
5216 This issue was discovered by the BoringSSL project and fixed in their
5222 * X509_to_X509_REQ NULL pointer deref fix
5224 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
5225 the certificate key is invalid. This function is rarely used in practice.
5227 This issue was discovered by Brian Carpenter.
5232 * Removed the export ciphers from the DEFAULT ciphers
5236 ### Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
5238 * Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
5239 ARMv5 through ARMv8, as opposite to "locking" it to single one.
5240 So far those who have to target multiple platforms would compromise
5241 and argue that binary targeting say ARMv5 would still execute on
5242 ARMv8. "Universal" build resolves this compromise by providing
5243 near-optimal performance even on newer platforms.
5247 * Accelerated NIST P-256 elliptic curve implementation for x86_64
5248 (other platforms pending).
5250 *Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov*
5252 * Add support for the SignedCertificateTimestampList certificate and
5253 OCSP response extensions from RFC6962.
5257 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
5258 for corner cases. (Certain input points at infinity could lead to
5259 bogus results, with non-infinity inputs mapped to infinity too.)
5263 * Initial support for PowerISA 2.0.7, first implemented in POWER8.
5264 This covers AES, SHA256/512 and GHASH. "Initial" means that most
5265 common cases are optimized and there still is room for further
5266 improvements. Vector Permutation AES for Altivec is also added.
5270 * Add support for little-endian ppc64 Linux target.
5272 *Marcelo Cerri (IBM)*
5274 * Initial support for AMRv8 ISA crypto extensions. This covers AES,
5275 SHA1, SHA256 and GHASH. "Initial" means that most common cases
5276 are optimized and there still is room for further improvements.
5277 Both 32- and 64-bit modes are supported.
5279 *Andy Polyakov, Ard Biesheuvel (Linaro)*
5281 * Improved ARMv7 NEON support.
5285 * Support for SPARC Architecture 2011 crypto extensions, first
5286 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
5287 SHA256/512, MD5, GHASH and modular exponentiation.
5289 *Andy Polyakov, David Miller*
5291 * Accelerated modular exponentiation for Intel processors, a.k.a.
5294 *Shay Gueron & Vlad Krasnov (Intel Corp)*
5296 * Support for new and upcoming Intel processors, including AVX2,
5297 BMI and SHA ISA extensions. This includes additional "stitched"
5298 implementations, AESNI-SHA256 and GCM, and multi-buffer support
5301 This work was sponsored by Intel Corp.
5305 * Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
5306 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
5307 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
5311 * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
5312 this fixes a limitation in previous versions of OpenSSL.
5316 * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
5317 MGF1 digest and OAEP label.
5321 * Add EVP support for key wrapping algorithms, to avoid problems with
5322 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
5323 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
5324 algorithms and include tests cases.
5328 * Add functions to allocate and set the fields of an ECDSA_METHOD
5331 *Douglas E. Engert, Steve Henson*
5333 * New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
5334 difference in days and seconds between two tm or ASN1_TIME structures.
5338 * Add -rev test option to s_server to just reverse order of characters
5339 received by client and send back to server. Also prints an abbreviated
5340 summary of the connection parameters.
5344 * New option -brief for s_client and s_server to print out a brief summary
5345 of connection parameters.
5349 * Add callbacks for arbitrary TLS extensions.
5351 *Trevor Perrin <trevp@trevp.net> and Ben Laurie*
5353 * New option -crl_download in several openssl utilities to download CRLs
5354 from CRLDP extension in certificates.
5358 * New options -CRL and -CRLform for s_client and s_server for CRLs.
5362 * New function X509_CRL_diff to generate a delta CRL from the difference
5363 of two full CRLs. Add support to "crl" utility.
5367 * New functions to set lookup_crls function and to retrieve
5368 X509_STORE from X509_STORE_CTX.
5372 * Print out deprecated issuer and subject unique ID fields in
5377 * Extend OCSP I/O functions so they can be used for simple general purpose
5378 HTTP as well as OCSP. New wrapper function which can be used to download
5379 CRLs using the OCSP API.
5383 * Delegate command line handling in s_client/s_server to SSL_CONF APIs.
5387 * `SSL_CONF*` functions. These provide a common framework for application
5388 configuration using configuration files or command lines.
5392 * SSL/TLS tracing code. This parses out SSL/TLS records using the
5393 message callback and prints the results. Needs compile time option
5394 "enable-ssl-trace". New options to s_client and s_server to enable
5399 * New ctrl and macro to retrieve supported points extensions.
5400 Print out extension in s_server and s_client.
5404 * New functions to retrieve certificate signature and signature
5409 * Add functions to retrieve and manipulate the raw cipherlist sent by a
5414 * New Suite B modes for TLS code. These use and enforce the requirements
5415 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
5416 only use Suite B curves. The Suite B modes can be set by using the
5417 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
5421 * New chain verification flags for Suite B levels of security. Check
5422 algorithms are acceptable when flags are set in X509_verify_cert.
5426 * Make tls1_check_chain return a set of flags indicating checks passed
5427 by a certificate chain. Add additional tests to handle client
5428 certificates: checks for matching certificate type and issuer name
5433 * If an attempt is made to use a signature algorithm not in the peer
5434 preference list abort the handshake. If client has no suitable
5435 signature algorithms in response to a certificate request do not
5436 use the certificate.
5440 * If server EC tmp key is not in client preference list abort handshake.
5444 * Add support for certificate stores in CERT structure. This makes it
5445 possible to have different stores per SSL structure or one store in
5446 the parent SSL_CTX. Include distinct stores for certificate chain
5447 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
5448 to build and store a certificate chain in CERT structure: returning
5449 an error if the chain cannot be built: this will allow applications
5450 to test if a chain is correctly configured.
5452 Note: if the CERT based stores are not set then the parent SSL_CTX
5453 store is used to retain compatibility with existing behaviour.
5457 * New function ssl_set_client_disabled to set a ciphersuite disabled
5458 mask based on the current session, check mask when sending client
5459 hello and checking the requested ciphersuite.
5463 * New ctrls to retrieve and set certificate types in a certificate
5464 request message. Print out received values in s_client. If certificate
5465 types is not set with custom values set sensible values based on
5466 supported signature algorithms.
5470 * Support for distinct client and server supported signature algorithms.
5474 * Add certificate callback. If set this is called whenever a certificate
5475 is required by client or server. An application can decide which
5476 certificate chain to present based on arbitrary criteria: for example
5477 supported signature algorithms. Add very simple example to s_server.
5478 This fixes many of the problems and restrictions of the existing client
5479 certificate callback: for example you can now clear an existing
5480 certificate and specify the whole chain.
5484 * Add new "valid_flags" field to CERT_PKEY structure which determines what
5485 the certificate can be used for (if anything). Set valid_flags field
5486 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
5487 to have similar checks in it.
5489 Add new "cert_flags" field to CERT structure and include a "strict mode".
5490 This enforces some TLS certificate requirements (such as only permitting
5491 certificate signature algorithms contained in the supported algorithms
5492 extension) which some implementations ignore: this option should be used
5493 with caution as it could cause interoperability issues.
5497 * Update and tidy signature algorithm extension processing. Work out
5498 shared signature algorithms based on preferences and peer algorithms
5499 and print them out in s_client and s_server. Abort handshake if no
5500 shared signature algorithms.
5504 * Add new functions to allow customised supported signature algorithms
5505 for SSL and SSL_CTX structures. Add options to s_client and s_server
5510 * New function SSL_certs_clear() to delete all references to certificates
5511 from an SSL structure. Before this once a certificate had been added
5512 it couldn't be removed.
5516 * Integrate hostname, email address and IP address checking with certificate
5517 verification. New verify options supporting checking in openssl utility.
5521 * Fixes and wildcard matching support to hostname and email checking
5522 functions. Add manual page.
5524 *Florian Weimer (Red Hat Product Security Team)*
5526 * New functions to check a hostname email or IP address against a
5527 certificate. Add options x509 utility to print results of checks against
5532 * Fix OCSP checking.
5534 *Rob Stradling <rob.stradling@comodo.com> and Ben Laurie*
5536 * Initial experimental support for explicitly trusted non-root CAs.
5537 OpenSSL still tries to build a complete chain to a root but if an
5538 intermediate CA has a trust setting included that is used. The first
5539 setting is used: whether to trust (e.g., -addtrust option to the x509
5544 * Add -trusted_first option which attempts to find certificates in the
5545 trusted store even if an untrusted chain is also supplied.
5549 * MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
5550 platform support for Linux and Android.
5554 * Support for linux-x32, ILP32 environment in x86_64 framework.
5558 * Experimental multi-implementation support for FIPS capable OpenSSL.
5559 When in FIPS mode the approved implementations are used as normal,
5560 when not in FIPS mode the internal unapproved versions are used instead.
5561 This means that the FIPS capable OpenSSL isn't forced to use the
5562 (often lower performance) FIPS implementations outside FIPS mode.
5566 * Transparently support X9.42 DH parameters when calling
5567 PEM_read_bio_DHparameters. This means existing applications can handle
5568 the new parameter format automatically.
5572 * Initial experimental support for X9.42 DH parameter format: mainly
5573 to support use of 'q' parameter for RFC5114 parameters.
5577 * Add DH parameters from RFC5114 including test data to dhtest.
5581 * Support for automatic EC temporary key parameter selection. If enabled
5582 the most preferred EC parameters are automatically used instead of
5583 hardcoded fixed parameters. Now a server just has to call:
5584 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
5585 support ECDH and use the most appropriate parameters.
5589 * Enhance and tidy EC curve and point format TLS extension code. Use
5590 static structures instead of allocation if default values are used.
5591 New ctrls to set curves we wish to support and to retrieve shared curves.
5592 Print out shared curves in s_server. New options to s_server and s_client
5593 to set list of supported curves.
5597 * New ctrls to retrieve supported signature algorithms and
5598 supported curve values as an array of NIDs. Extend openssl utility
5599 to print out received values.
5603 * Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
5604 between NIDs and the more common NIST names such as "P-256". Enhance
5605 ecparam utility and ECC method to recognise the NIST names for curves.
5609 * Enhance SSL/TLS certificate chain handling to support different
5610 chains for each certificate instead of one chain in the parent SSL_CTX.
5614 * Support for fixed DH ciphersuite client authentication: where both
5615 server and client use DH certificates with common parameters.
5619 * Support for fixed DH ciphersuites: those requiring DH server
5624 * New function i2d_re_X509_tbs for re-encoding the TBS portion of
5626 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
5627 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
5628 X509_CINF_get_signature were reverted post internal team review.
5633 ### Changes between 1.0.1t and 1.0.1u [22 Sep 2016]
5635 * OCSP Status Request extension unbounded memory growth
5637 A malicious client can send an excessively large OCSP Status Request
5638 extension. If that client continually requests renegotiation, sending a
5639 large OCSP Status Request extension each time, then there will be unbounded
5640 memory growth on the server. This will eventually lead to a Denial Of
5641 Service attack through memory exhaustion. Servers with a default
5642 configuration are vulnerable even if they do not support OCSP. Builds using
5643 the "no-ocsp" build time option are not affected.
5645 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5650 * In order to mitigate the SWEET32 attack, the DES ciphers were moved from
5653 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
5659 * OOB write in MDC2_Update()
5661 An overflow can occur in MDC2_Update() either if called directly or
5662 through the EVP_DigestUpdate() function using MDC2. If an attacker
5663 is able to supply very large amounts of input data after a previous
5664 call to EVP_EncryptUpdate() with a partial block then a length check
5665 can overflow resulting in a heap corruption.
5667 The amount of data needed is comparable to SIZE_MAX which is impractical
5670 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5675 * Malformed SHA512 ticket DoS
5677 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
5678 DoS attack where a malformed ticket will result in an OOB read which will
5681 The use of SHA512 in TLS session tickets is comparatively rare as it requires
5682 a custom server callback and ticket lookup mechanism.
5684 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5689 * OOB write in BN_bn2dec()
5691 The function BN_bn2dec() does not check the return value of BN_div_word().
5692 This can cause an OOB write if an application uses this function with an
5693 overly large BIGNUM. This could be a problem if an overly large certificate
5694 or CRL is printed out from an untrusted source. TLS is not affected because
5695 record limits will reject an oversized certificate before it is parsed.
5697 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5702 * OOB read in TS_OBJ_print_bio()
5704 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
5705 the total length the OID text representation would use and not the amount
5706 of data written. This will result in OOB reads when large OIDs are
5709 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5714 * Pointer arithmetic undefined behaviour
5716 Avoid some undefined pointer arithmetic
5718 A common idiom in the codebase is to check limits in the following manner:
5721 Where "p" points to some malloc'd data of SIZE bytes and
5724 "len" here could be from some externally supplied data (e.g. from a TLS
5727 The rules of C pointer arithmetic are such that "p + len" is only well
5728 defined where len <= SIZE. Therefore the above idiom is actually
5729 undefined behaviour.
5731 For example this could cause problems if some malloc implementation
5732 provides an address for "p" such that "p + len" actually overflows for
5733 values of len that are too big and therefore p + len < limit.
5735 This issue was reported to OpenSSL by Guido Vranken
5740 * Constant time flag not preserved in DSA signing
5742 Operations in the DSA signing algorithm should run in constant time in
5743 order to avoid side channel attacks. A flaw in the OpenSSL DSA
5744 implementation means that a non-constant time codepath is followed for
5745 certain operations. This has been demonstrated through a cache-timing
5746 attack to be sufficient for an attacker to recover the private DSA key.
5748 This issue was reported by César Pereida (Aalto University), Billy Brumley
5749 (Tampere University of Technology), and Yuval Yarom (The University of
5750 Adelaide and NICTA).
5755 * DTLS buffered message DoS
5757 In a DTLS connection where handshake messages are delivered out-of-order
5758 those messages that OpenSSL is not yet ready to process will be buffered
5759 for later use. Under certain circumstances, a flaw in the logic means that
5760 those messages do not get removed from the buffer even though the handshake
5761 has been completed. An attacker could force up to approx. 15 messages to
5762 remain in the buffer when they are no longer required. These messages will
5763 be cleared when the DTLS connection is closed. The default maximum size for
5764 a message is 100k. Therefore the attacker could force an additional 1500k
5765 to be consumed per connection. By opening many simulataneous connections an
5766 attacker could cause a DoS attack through memory exhaustion.
5768 This issue was reported to OpenSSL by Quan Luo.
5773 * DTLS replay protection DoS
5775 A flaw in the DTLS replay attack protection mechanism means that records
5776 that arrive for future epochs update the replay protection "window" before
5777 the MAC for the record has been validated. This could be exploited by an
5778 attacker by sending a record for the next epoch (which does not have to
5779 decrypt or have a valid MAC), with a very large sequence number. This means
5780 that all subsequent legitimate packets are dropped causing a denial of
5781 service for a specific DTLS connection.
5783 This issue was reported to OpenSSL by the OCAP audit team.
5788 * Certificate message OOB reads
5790 In OpenSSL 1.0.2 and earlier some missing message length checks can result
5791 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
5792 theoretical DoS risk but this has not been observed in practice on common
5795 The messages affected are client certificate, client certificate request
5796 and server certificate. As a result the attack can only be performed
5797 against a client or a server which enables client authentication.
5799 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
5804 ### Changes between 1.0.1s and 1.0.1t [3 May 2016]
5806 * Prevent padding oracle in AES-NI CBC MAC check
5808 A MITM attacker can use a padding oracle attack to decrypt traffic
5809 when the connection uses an AES CBC cipher and the server support
5812 This issue was introduced as part of the fix for Lucky 13 padding
5813 attack ([CVE-2013-0169]). The padding check was rewritten to be in
5814 constant time by making sure that always the same bytes are read and
5815 compared against either the MAC or padding bytes. But it no longer
5816 checked that there was enough data to have both the MAC and padding
5819 This issue was reported by Juraj Somorovsky using TLS-Attacker.
5824 * Fix EVP_EncodeUpdate overflow
5826 An overflow can occur in the EVP_EncodeUpdate() function which is used for
5827 Base64 encoding of binary data. If an attacker is able to supply very large
5828 amounts of input data then a length check can overflow resulting in a heap
5831 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by
5832 the `PEM_write_bio*` family of functions. These are mainly used within the
5833 OpenSSL command line applications, so any application which processes data
5834 from an untrusted source and outputs it as a PEM file should be considered
5835 vulnerable to this issue. User applications that call these APIs directly
5836 with large amounts of untrusted data may also be vulnerable.
5838 This issue was reported by Guido Vranken.
5843 * Fix EVP_EncryptUpdate overflow
5845 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
5846 is able to supply very large amounts of input data after a previous call to
5847 EVP_EncryptUpdate() with a partial block then a length check can overflow
5848 resulting in a heap corruption. Following an analysis of all OpenSSL
5849 internal usage of the EVP_EncryptUpdate() function all usage is one of two
5850 forms. The first form is where the EVP_EncryptUpdate() call is known to be
5851 the first called function after an EVP_EncryptInit(), and therefore that
5852 specific call must be safe. The second form is where the length passed to
5853 EVP_EncryptUpdate() can be seen from the code to be some small value and
5854 therefore there is no possibility of an overflow. Since all instances are
5855 one of these two forms, it is believed that there can be no overflows in
5856 internal code due to this problem. It should be noted that
5857 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
5858 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
5859 of these calls have also been analysed too and it is believed there are no
5860 instances in internal usage where an overflow could occur.
5862 This issue was reported by Guido Vranken.
5867 * Prevent ASN.1 BIO excessive memory allocation
5869 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
5870 a short invalid encoding can casuse allocation of large amounts of memory
5871 potentially consuming excessive resources or exhausting memory.
5873 Any application parsing untrusted data through d2i BIO functions is
5874 affected. The memory based functions such as d2i_X509() are *not* affected.
5875 Since the memory based functions are used by the TLS library, TLS
5876 applications are not affected.
5878 This issue was reported by Brian Carpenter.
5885 ASN1 Strings that are over 1024 bytes can cause an overread in applications
5886 using the X509_NAME_oneline() function on EBCDIC systems. This could result
5887 in arbitrary stack data being returned in the buffer.
5889 This issue was reported by Guido Vranken.
5894 * Modify behavior of ALPN to invoke callback after SNI/servername
5895 callback, such that updates to the SSL_CTX affect ALPN.
5899 * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
5904 * Only remove the SSLv2 methods with the no-ssl2-method option. When the
5905 methods are enabled and ssl2 is disabled the methods return NULL.
5909 ### Changes between 1.0.1r and 1.0.1s [1 Mar 2016]
5911 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
5912 Builds that are not configured with "enable-weak-ssl-ciphers" will not
5913 provide any "EXPORT" or "LOW" strength ciphers.
5917 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
5918 is by default disabled at build-time. Builds that are not configured with
5919 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
5920 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
5921 will need to explicitly call either of:
5923 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
5925 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
5927 as appropriate. Even if either of those is used, or the application
5928 explicitly uses the version-specific SSLv2_method() or its client and
5929 server variants, SSLv2 ciphers vulnerable to exhaustive search key
5930 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
5931 ciphers, and SSLv2 56-bit DES are no longer available.
5936 * Fix a double-free in DSA code
5938 A double free bug was discovered when OpenSSL parses malformed DSA private
5939 keys and could lead to a DoS attack or memory corruption for applications
5940 that receive DSA private keys from untrusted sources. This scenario is
5943 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
5949 * Disable SRP fake user seed to address a server memory leak.
5951 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
5953 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
5954 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
5955 was changed to ignore the "fake user" SRP seed, even if the seed
5958 Users should use SRP_VBASE_get1_by_user instead. Note that in
5959 SRP_VBASE_get1_by_user, caller must free the returned value. Note
5960 also that even though configuring the SRP seed attempts to hide
5961 invalid usernames by continuing the handshake with fake
5962 credentials, this behaviour is not constant time and no strong
5963 guarantees are made that the handshake is indistinguishable from
5964 that of a valid user.
5969 * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
5971 In the BN_hex2bn function the number of hex digits is calculated using an
5972 int value `i`. Later `bn_expand` is called with a value of `i * 4`. For
5973 large values of `i` this can result in `bn_expand` not allocating any
5974 memory because `i * 4` is negative. This can leave the internal BIGNUM data
5975 field as NULL leading to a subsequent NULL ptr deref. For very large values
5976 of `i`, the calculation `i * 4` could be a positive value smaller than `i`.
5977 In this case memory is allocated to the internal BIGNUM data field, but it
5978 is insufficiently sized leading to heap corruption. A similar issue exists
5979 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
5980 is ever called by user applications with very large untrusted hex/dec data.
5981 This is anticipated to be a rare occurrence.
5983 All OpenSSL internal usage of these functions use data that is not expected
5984 to be untrusted, e.g. config file data or application command line
5985 arguments. If user developed applications generate config file data based
5986 on untrusted data then it is possible that this could also lead to security
5987 consequences. This is also anticipated to be rare.
5989 This issue was reported to OpenSSL by Guido Vranken.
5994 * Fix memory issues in `BIO_*printf` functions
5996 The internal `fmtstr` function used in processing a "%s" format string in
5997 the `BIO_*printf` functions could overflow while calculating the length of a
5998 string and cause an OOB read when printing very long strings.
6000 Additionally the internal `doapr_outch` function can attempt to write to an
6001 OOB memory location (at an offset from the NULL pointer) in the event of a
6002 memory allocation failure. In 1.0.2 and below this could be caused where
6003 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
6004 could be in processing a very long "%s" format string. Memory leaks can
6007 The first issue may mask the second issue dependent on compiler behaviour.
6008 These problems could enable attacks where large amounts of untrusted data
6009 is passed to the `BIO_*printf` functions. If applications use these functions
6010 in this way then they could be vulnerable. OpenSSL itself uses these
6011 functions when printing out human-readable dumps of ASN.1 data. Therefore
6012 applications that print this data could be vulnerable if the data is from
6013 untrusted sources. OpenSSL command line applications could also be
6014 vulnerable where they print out ASN.1 data, or if untrusted data is passed
6015 as command line arguments.
6017 Libssl is not considered directly vulnerable. Additionally certificates etc
6018 received via remote connections via libssl are also unlikely to be able to
6019 trigger these issues because of message size limits enforced within libssl.
6021 This issue was reported to OpenSSL Guido Vranken.
6026 * Side channel attack on modular exponentiation
6028 A side-channel attack was found which makes use of cache-bank conflicts on
6029 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
6030 of RSA keys. The ability to exploit this issue is limited as it relies on
6031 an attacker who has control of code in a thread running on the same
6032 hyper-threaded core as the victim thread which is performing decryptions.
6034 This issue was reported to OpenSSL by Yuval Yarom, The University of
6035 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
6036 Nadia Heninger, University of Pennsylvania with more information at
6037 <http://cachebleed.info>.
6042 * Change the req app to generate a 2048-bit RSA/DSA key by default,
6043 if no keysize is specified with default_bits. This fixes an
6044 omission in an earlier change that changed all RSA/DSA key generation
6045 apps to use 2048 bits by default.
6049 ### Changes between 1.0.1q and 1.0.1r [28 Jan 2016]
6051 * Protection for DH small subgroup attacks
6053 As a precautionary measure the SSL_OP_SINGLE_DH_USE option has been
6054 switched on by default and cannot be disabled. This could have some
6059 * SSLv2 doesn't block disabled ciphers
6061 A malicious client can negotiate SSLv2 ciphers that have been disabled on
6062 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
6063 been disabled, provided that the SSLv2 protocol was not also disabled via
6066 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
6067 and Sebastian Schinzel.
6072 * Reject DH handshakes with parameters shorter than 1024 bits.
6076 ### Changes between 1.0.1p and 1.0.1q [3 Dec 2015]
6078 * Certificate verify crash with missing PSS parameter
6080 The signature verification routines will crash with a NULL pointer
6081 dereference if presented with an ASN.1 signature using the RSA PSS
6082 algorithm and absent mask generation function parameter. Since these
6083 routines are used to verify certificate signature algorithms this can be
6084 used to crash any certificate verification operation and exploited in a
6085 DoS attack. Any application which performs certificate verification is
6086 vulnerable including OpenSSL clients and servers which enable client
6089 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
6094 * X509_ATTRIBUTE memory leak
6096 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
6097 memory. This structure is used by the PKCS#7 and CMS routines so any
6098 application which reads PKCS#7 or CMS data from untrusted sources is
6099 affected. SSL/TLS is not affected.
6101 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
6107 * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
6108 This changes the decoding behaviour for some invalid messages,
6109 though the change is mostly in the more lenient direction, and
6110 legacy behaviour is preserved as much as possible.
6114 * In DSA_generate_parameters_ex, if the provided seed is too short,
6115 use a random seed, as already documented.
6117 *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
6119 ### Changes between 1.0.1o and 1.0.1p [9 Jul 2015]
6121 * Alternate chains certificate forgery
6123 During certificate verfification, OpenSSL will attempt to find an
6124 alternative certificate chain if the first attempt to build such a chain
6125 fails. An error in the implementation of this logic can mean that an
6126 attacker could cause certain checks on untrusted certificates to be
6127 bypassed, such as the CA flag, enabling them to use a valid leaf
6128 certificate to act as a CA and "issue" an invalid certificate.
6130 This issue was reported to OpenSSL by Adam Langley/David Benjamin
6136 * Race condition handling PSK identify hint
6138 If PSK identity hints are received by a multi-threaded client then
6139 the values are wrongly updated in the parent SSL_CTX structure. This can
6140 result in a race condition potentially leading to a double free of the
6146 ### Changes between 1.0.1n and 1.0.1o [12 Jun 2015]
6148 * Fix HMAC ABI incompatibility. The previous version introduced an ABI
6149 incompatibility in the handling of HMAC. The previous ABI has now been
6152 ### Changes between 1.0.1m and 1.0.1n [11 Jun 2015]
6154 * Malformed ECParameters causes infinite loop
6156 When processing an ECParameters structure OpenSSL enters an infinite loop
6157 if the curve specified is over a specially malformed binary polynomial
6160 This can be used to perform denial of service against any
6161 system which processes public keys, certificate requests or
6162 certificates. This includes TLS clients and TLS servers with
6163 client authentication enabled.
6165 This issue was reported to OpenSSL by Joseph Barr-Pixton.
6170 * Exploitable out-of-bounds read in X509_cmp_time
6172 X509_cmp_time does not properly check the length of the ASN1_TIME
6173 string and can read a few bytes out of bounds. In addition,
6174 X509_cmp_time accepts an arbitrary number of fractional seconds in the
6177 An attacker can use this to craft malformed certificates and CRLs of
6178 various sizes and potentially cause a segmentation fault, resulting in
6179 a DoS on applications that verify certificates or CRLs. TLS clients
6180 that verify CRLs are affected. TLS clients and servers with client
6181 authentication enabled may be affected if they use custom verification
6184 This issue was reported to OpenSSL by Robert Swiecki (Google), and
6185 independently by Hanno Böck.
6190 * PKCS7 crash with missing EnvelopedContent
6192 The PKCS#7 parsing code does not handle missing inner EncryptedContent
6193 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
6194 with missing content and trigger a NULL pointer dereference on parsing.
6196 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
6197 structures from untrusted sources are affected. OpenSSL clients and
6198 servers are not affected.
6200 This issue was reported to OpenSSL by Michal Zalewski (Google).
6205 * CMS verify infinite loop with unknown hash function
6207 When verifying a signedData message the CMS code can enter an infinite loop
6208 if presented with an unknown hash function OID. This can be used to perform
6209 denial of service against any system which verifies signedData messages using
6211 This issue was reported to OpenSSL by Johannes Bauer.
6216 * Race condition handling NewSessionTicket
6218 If a NewSessionTicket is received by a multi-threaded client when attempting to
6219 reuse a previous ticket then a race condition can occur potentially leading to
6220 a double free of the ticket data.
6225 * Reject DH handshakes with parameters shorter than 768 bits.
6227 *Kurt Roeckx and Emilia Kasper*
6229 * dhparam: generate 2048-bit parameters by default.
6231 *Kurt Roeckx and Emilia Kasper*
6233 ### Changes between 1.0.1l and 1.0.1m [19 Mar 2015]
6235 * Segmentation fault in ASN1_TYPE_cmp fix
6237 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
6238 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
6239 certificate signature algorithm consistency this can be used to crash any
6240 certificate verification operation and exploited in a DoS attack. Any
6241 application which performs certificate verification is vulnerable including
6242 OpenSSL clients and servers which enable client authentication.
6247 * ASN.1 structure reuse memory corruption fix
6249 Reusing a structure in ASN.1 parsing may allow an attacker to cause
6250 memory corruption via an invalid write. Such reuse is and has been
6251 strongly discouraged and is believed to be rare.
6253 Applications that parse structures containing CHOICE or ANY DEFINED BY
6254 components may be affected. Certificate parsing (d2i_X509 and related
6255 functions) are however not affected. OpenSSL clients and servers are
6261 * PKCS7 NULL pointer dereferences fix
6263 The PKCS#7 parsing code does not handle missing outer ContentInfo
6264 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
6265 missing content and trigger a NULL pointer dereference on parsing.
6267 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
6268 otherwise parse PKCS#7 structures from untrusted sources are
6269 affected. OpenSSL clients and servers are not affected.
6271 This issue was reported to OpenSSL by Michal Zalewski (Google).
6276 * DoS via reachable assert in SSLv2 servers fix
6278 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
6279 servers that both support SSLv2 and enable export cipher suites by sending
6280 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
6282 This issue was discovered by Sean Burford (Google) and Emilia Käsper
6283 (OpenSSL development team).
6288 * Use After Free following d2i_ECPrivatekey error fix
6290 A malformed EC private key file consumed via the d2i_ECPrivateKey function
6291 could cause a use after free condition. This, in turn, could cause a double
6292 free in several private key parsing functions (such as d2i_PrivateKey
6293 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
6294 for applications that receive EC private keys from untrusted
6295 sources. This scenario is considered rare.
6297 This issue was discovered by the BoringSSL project and fixed in their
6303 * X509_to_X509_REQ NULL pointer deref fix
6305 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
6306 the certificate key is invalid. This function is rarely used in practice.
6308 This issue was discovered by Brian Carpenter.
6313 * Removed the export ciphers from the DEFAULT ciphers
6317 ### Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
6319 * Build fixes for the Windows and OpenVMS platforms
6321 *Matt Caswell and Richard Levitte*
6323 ### Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
6325 * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
6326 message can cause a segmentation fault in OpenSSL due to a NULL pointer
6327 dereference. This could lead to a Denial Of Service attack. Thanks to
6328 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
6333 * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
6334 dtls1_buffer_record function under certain conditions. In particular this
6335 could occur if an attacker sent repeated DTLS records with the same
6336 sequence number but for the next epoch. The memory leak could be exploited
6337 by an attacker in a Denial of Service attack through memory exhaustion.
6338 Thanks to Chris Mueller for reporting this issue.
6343 * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
6344 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
6345 method would be set to NULL which could later result in a NULL pointer
6346 dereference. Thanks to Frank Schmirler for reporting this issue.
6351 * Abort handshake if server key exchange message is omitted for ephemeral
6354 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
6355 reporting this issue.
6360 * Remove non-export ephemeral RSA code on client and server. This code
6361 violated the TLS standard by allowing the use of temporary RSA keys in
6362 non-export ciphersuites and could be used by a server to effectively
6363 downgrade the RSA key length used to a value smaller than the server
6364 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
6365 INRIA or reporting this issue.
6370 * Fixed issue where DH client certificates are accepted without verification.
6371 An OpenSSL server will accept a DH certificate for client authentication
6372 without the certificate verify message. This effectively allows a client to
6373 authenticate without the use of a private key. This only affects servers
6374 which trust a client certificate authority which issues certificates
6375 containing DH keys: these are extremely rare and hardly ever encountered.
6376 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
6382 * Ensure that the session ID context of an SSL is updated when its
6383 SSL_CTX is updated via SSL_set_SSL_CTX.
6385 The session ID context is typically set from the parent SSL_CTX,
6386 and can vary with the CTX.
6390 * Fix various certificate fingerprint issues.
6392 By using non-DER or invalid encodings outside the signed portion of a
6393 certificate the fingerprint can be changed without breaking the signature.
6394 Although no details of the signed portion of the certificate can be changed
6395 this can cause problems with some applications: e.g. those using the
6396 certificate fingerprint for blacklists.
6398 1. Reject signatures with non zero unused bits.
6400 If the BIT STRING containing the signature has non zero unused bits reject
6401 the signature. All current signature algorithms require zero unused bits.
6403 2. Check certificate algorithm consistency.
6405 Check the AlgorithmIdentifier inside TBS matches the one in the
6406 certificate signature. NB: this will result in signature failure
6407 errors for some broken certificates.
6409 Thanks to Konrad Kraszewski from Google for reporting this issue.
6411 3. Check DSA/ECDSA signatures use DER.
6413 Re-encode DSA/ECDSA signatures and compare with the original received
6414 signature. Return an error if there is a mismatch.
6416 This will reject various cases including garbage after signature
6417 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
6418 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
6419 (negative or with leading zeroes).
6421 Further analysis was conducted and fixes were developed by Stephen Henson
6422 of the OpenSSL core team.
6428 * Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
6429 results on some platforms, including x86_64. This bug occurs at random
6430 with a very low probability, and is not known to be exploitable in any
6431 way, though its exact impact is difficult to determine. Thanks to Pieter
6432 Wuille (Blockstream) who reported this issue and also suggested an initial
6433 fix. Further analysis was conducted by the OpenSSL development team and
6434 Adam Langley of Google. The final fix was developed by Andy Polyakov of
6435 the OpenSSL core team.
6440 * Do not resume sessions on the server if the negotiated protocol
6441 version does not match the session's version. Resuming with a different
6442 version, while not strictly forbidden by the RFC, is of questionable
6443 sanity and breaks all known clients.
6445 *David Benjamin, Emilia Käsper*
6447 * Tighten handling of the ChangeCipherSpec (CCS) message: reject
6448 early CCS messages during renegotiation. (Note that because
6449 renegotiation is encrypted, this early CCS was not exploitable.)
6453 * Tighten client-side session ticket handling during renegotiation:
6454 ensure that the client only accepts a session ticket if the server sends
6455 the extension anew in the ServerHello. Previously, a TLS client would
6456 reuse the old extension state and thus accept a session ticket if one was
6457 announced in the initial ServerHello.
6459 Similarly, ensure that the client requires a session ticket if one
6460 was advertised in the ServerHello. Previously, a TLS client would
6461 ignore a missing NewSessionTicket message.
6465 ### Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
6469 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
6470 sends a carefully crafted handshake message, to cause OpenSSL to fail
6471 to free up to 64k of memory causing a memory leak. This could be
6472 exploited in a Denial Of Service attack. This issue affects OpenSSL
6473 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
6474 whether SRTP is used or configured. Implementations of OpenSSL that
6475 have been compiled with OPENSSL_NO_SRTP defined are not affected.
6477 The fix was developed by the OpenSSL team.
6482 * Session Ticket Memory Leak.
6484 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
6485 integrity of that ticket is first verified. In the event of a session
6486 ticket integrity check failing, OpenSSL will fail to free memory
6487 causing a memory leak. By sending a large number of invalid session
6488 tickets an attacker could exploit this issue in a Denial Of Service
6494 * Build option no-ssl3 is incomplete.
6496 When OpenSSL is configured with "no-ssl3" as a build option, servers
6497 could accept and complete a SSL 3.0 handshake, and clients could be
6498 configured to send them.
6501 *Akamai and the OpenSSL team*
6503 * Add support for TLS_FALLBACK_SCSV.
6504 Client applications doing fallback retries should call
6505 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
6508 *Adam Langley, Bodo Moeller*
6510 * Add additional DigestInfo checks.
6512 Re-encode DigestInto in DER and check against the original when
6513 verifying RSA signature: this will reject any improperly encoded
6514 DigestInfo structures.
6516 Note: this is a precautionary measure and no attacks are currently known.
6520 ### Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
6522 * Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
6523 SRP code can be overrun an internal buffer. Add sanity check that
6524 g, A, B < N to SRP code.
6526 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
6527 Group for discovering this issue.
6532 * A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
6533 TLS 1.0 instead of higher protocol versions when the ClientHello message
6534 is badly fragmented. This allows a man-in-the-middle attacker to force a
6535 downgrade to TLS 1.0 even if both the server and the client support a
6536 higher protocol version, by modifying the client's TLS records.
6538 Thanks to David Benjamin and Adam Langley (Google) for discovering and
6539 researching this issue.
6544 * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
6545 to a denial of service attack. A malicious server can crash the client
6546 with a null pointer dereference (read) by specifying an anonymous (EC)DH
6547 ciphersuite and sending carefully crafted handshake messages.
6549 Thanks to Felix Gröbert (Google) for discovering and researching this
6555 * By sending carefully crafted DTLS packets an attacker could cause openssl
6556 to leak memory. This can be exploited through a Denial of Service attack.
6557 Thanks to Adam Langley for discovering and researching this issue.
6562 * An attacker can force openssl to consume large amounts of memory whilst
6563 processing DTLS handshake messages. This can be exploited through a
6564 Denial of Service attack.
6565 Thanks to Adam Langley for discovering and researching this issue.
6570 * An attacker can force an error condition which causes openssl to crash
6571 whilst processing DTLS packets due to memory being freed twice. This
6572 can be exploited through a Denial of Service attack.
6573 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
6579 * If a multithreaded client connects to a malicious server using a resumed
6580 session and the server sends an ec point format extension it could write
6581 up to 255 bytes to freed memory.
6583 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
6589 * A malicious server can crash an OpenSSL client with a null pointer
6590 dereference (read) by specifying an SRP ciphersuite even though it was not
6591 properly negotiated with the client. This can be exploited through a
6592 Denial of Service attack.
6594 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
6595 discovering and researching this issue.
6600 * A flaw in OBJ_obj2txt may cause pretty printing functions such as
6601 X509_name_oneline, X509_name_print_ex et al. to leak some information
6602 from the stack. Applications may be affected if they echo pretty printing
6603 output to the attacker.
6605 Thanks to Ivan Fratric (Google) for discovering this issue.
6608 *Emilia Käsper, and Steve Henson*
6610 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
6611 for corner cases. (Certain input points at infinity could lead to
6612 bogus results, with non-infinity inputs mapped to infinity too.)
6616 ### Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
6618 * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
6619 handshake can force the use of weak keying material in OpenSSL
6620 SSL/TLS clients and servers.
6622 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
6623 researching this issue. ([CVE-2014-0224])
6625 *KIKUCHI Masashi, Steve Henson*
6627 * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
6628 OpenSSL DTLS client the code can be made to recurse eventually crashing
6631 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
6634 *Imre Rad, Steve Henson*
6636 * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
6637 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
6638 client or server. This is potentially exploitable to run arbitrary
6639 code on a vulnerable client or server.
6641 Thanks to Jüri Aedla for reporting this issue. ([CVE-2014-0195])
6643 *Jüri Aedla, Steve Henson*
6645 * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
6646 are subject to a denial of service attack.
6648 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
6649 this issue. ([CVE-2014-3470])
6651 *Felix Gröbert, Ivan Fratric, Steve Henson*
6653 * Harmonize version and its documentation. -f flag is used to display
6656 *mancha <mancha1@zoho.com>*
6658 * Fix eckey_priv_encode so it immediately returns an error upon a failure
6659 in i2d_ECPrivateKey.
6661 *mancha <mancha1@zoho.com>*
6663 * Fix some double frees. These are not thought to be exploitable.
6665 *mancha <mancha1@zoho.com>*
6667 ### Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
6669 * A missing bounds check in the handling of the TLS heartbeat extension
6670 can be used to reveal up to 64k of memory to a connected client or
6673 Thanks for Neel Mehta of Google Security for discovering this bug and to
6674 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
6675 preparing the fix ([CVE-2014-0160])
6677 *Adam Langley, Bodo Moeller*
6679 * Fix for the attack described in the paper "Recovering OpenSSL
6680 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
6681 by Yuval Yarom and Naomi Benger. Details can be obtained from:
6682 <http://eprint.iacr.org/2014/140>
6684 Thanks to Yuval Yarom and Naomi Benger for discovering this
6685 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
6687 *Yuval Yarom and Naomi Benger*
6689 * TLS pad extension: draft-agl-tls-padding-03
6691 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
6692 TLS client Hello record length value would otherwise be > 255 and
6693 less that 512 pad with a dummy extension containing zeroes so it
6694 is at least 512 bytes long.
6696 *Adam Langley, Steve Henson*
6698 ### Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
6700 * Fix for TLS record tampering bug. A carefully crafted invalid
6701 handshake could crash OpenSSL with a NULL pointer exception.
6702 Thanks to Anton Johansson for reporting this issues.
6705 * Keep original DTLS digest and encryption contexts in retransmission
6706 structures so we can use the previous session parameters if they need
6707 to be resent. ([CVE-2013-6450])
6711 * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
6712 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
6713 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
6714 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
6715 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
6716 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
6718 *Rob Stradling, Adam Langley*
6720 ### Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
6722 * Correct fix for CVE-2013-0169. The original didn't work on AES-NI
6723 supporting platforms or when small records were transferred.
6725 *Andy Polyakov, Steve Henson*
6727 ### Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
6729 * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
6731 This addresses the flaw in CBC record processing discovered by
6732 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
6733 at: <http://www.isg.rhul.ac.uk/tls/>
6735 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
6736 Security Group at Royal Holloway, University of London
6737 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
6738 Emilia Käsper for the initial patch.
6741 *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
6743 * Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
6744 ciphersuites which can be exploited in a denial of service attack.
6745 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
6746 and detecting this bug and to Wolfgang Ettlinger
6747 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
6752 * Return an error when checking OCSP signatures when key is NULL.
6753 This fixes a DoS attack. ([CVE-2013-0166])
6757 * Make openssl verify return errors.
6759 *Chris Palmer <palmer@google.com> and Ben Laurie*
6761 * Call OCSP Stapling callback after ciphersuite has been chosen, so
6762 the right response is stapled. Also change SSL_get_certificate()
6763 so it returns the certificate actually sent.
6764 See <http://rt.openssl.org/Ticket/Display.html?id=2836>.
6766 *Rob Stradling <rob.stradling@comodo.com>*
6768 * Fix possible deadlock when decoding public keys.
6772 * Don't use TLS 1.0 record version number in initial client hello
6777 ### Changes between 1.0.1b and 1.0.1c [10 May 2012]
6779 * Sanity check record length before skipping explicit IV in TLS
6780 1.2, 1.1 and DTLS to fix DoS attack.
6782 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
6783 fuzzing as a service testing platform.
6788 * Initialise tkeylen properly when encrypting CMS messages.
6789 Thanks to Solar Designer of Openwall for reporting this issue.
6793 * In FIPS mode don't try to use composite ciphers as they are not
6798 ### Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
6800 * OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
6801 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
6802 mean any application compiled against OpenSSL 1.0.0 headers setting
6803 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
6804 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
6805 0x10000000L Any application which was previously compiled against
6806 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
6807 will need to be recompiled as a result. Letting be results in
6808 inability to disable specifically TLS 1.1 and in client context,
6809 in unlike event, limit maximum offered version to TLS 1.0 [see below].
6813 * In order to ensure interoperability SSL_OP_NO_protocolX does not
6814 disable just protocol X, but all protocols above X *if* there are
6815 protocols *below* X still enabled. In more practical terms it means
6816 that if application wants to disable TLS1.0 in favor of TLS1.1 and
6817 above, it's not sufficient to pass `SSL_OP_NO_TLSv1`, one has to pass
6818 `SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2`. This applies to
6823 ### Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
6825 * Check for potentially exploitable overflows in asn1_d2i_read_bio
6826 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
6827 in CRYPTO_realloc_clean.
6829 Thanks to Tavis Ormandy, Google Security Team, for discovering this
6830 issue and to Adam Langley <agl@chromium.org> for fixing it.
6833 *Adam Langley (Google), Tavis Ormandy, Google Security Team*
6835 * Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
6839 * Workarounds for some broken servers that "hang" if a client hello
6840 record length exceeds 255 bytes.
6842 1. Do not use record version number > TLS 1.0 in initial client
6843 hello: some (but not all) hanging servers will now work.
6844 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
6845 the number of ciphers sent in the client hello. This should be
6846 set to an even number, such as 50, for example by passing:
6847 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
6848 Most broken servers should now work.
6849 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
6850 TLS 1.2 client support entirely.
6854 * Fix SEGV in Vector Permutation AES module observed in OpenSSH.
6858 ### Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
6860 * Add compatibility with old MDC2 signatures which use an ASN1 OCTET
6861 STRING form instead of a DigestInfo.
6865 * The format used for MDC2 RSA signatures is inconsistent between EVP
6866 and the RSA_sign/RSA_verify functions. This was made more apparent when
6867 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
6868 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
6869 the correct format in RSA_verify so both forms transparently work.
6873 * Some servers which support TLS 1.0 can choke if we initially indicate
6874 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
6875 encrypted premaster secret. As a workaround use the maximum permitted
6876 client version in client hello, this should keep such servers happy
6877 and still work with previous versions of OpenSSL.
6881 * Add support for TLS/DTLS heartbeats.
6883 *Robin Seggelmann <seggelmann@fh-muenster.de>*
6885 * Add support for SCTP.
6887 *Robin Seggelmann <seggelmann@fh-muenster.de>*
6889 * Improved PRNG seeding for VOS.
6891 *Paul Green <Paul.Green@stratus.com>*
6893 * Extensive assembler packs updates, most notably:
6895 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
6896 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
6897 - x86_64: bit-sliced AES implementation;
6898 - ARM: NEON support, contemporary platforms optimizations;
6899 - s390x: z196 support;
6900 - `*`: GHASH and GF(2^m) multiplication implementations;
6904 * Make TLS-SRP code conformant with RFC 5054 API cleanup
6905 (removal of unnecessary code)
6907 *Peter Sylvester <peter.sylvester@edelweb.fr>*
6909 * Add TLS key material exporter from RFC 5705.
6913 * Add DTLS-SRTP negotiation from RFC 5764.
6917 * Add Next Protocol Negotiation,
6918 <http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00>. Can be
6919 disabled with a no-npn flag to config or Configure. Code donated
6922 *Adam Langley <agl@google.com> and Ben Laurie*
6924 * Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
6925 NIST-P256, NIST-P521, with constant-time single point multiplication on
6926 typical inputs. Compiler support for the nonstandard type `__uint128_t` is
6927 required to use this (present in gcc 4.4 and later, for 64-bit builds).
6928 Code made available under Apache License version 2.0.
6930 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
6931 line to include this in your build of OpenSSL, and run "make depend" (or
6932 "make update"). This enables the following EC_METHODs:
6934 EC_GFp_nistp224_method()
6935 EC_GFp_nistp256_method()
6936 EC_GFp_nistp521_method()
6938 EC_GROUP_new_by_curve_name() will automatically use these (while
6939 EC_GROUP_new_curve_GFp() currently prefers the more flexible
6942 *Emilia Käsper, Adam Langley, Bodo Moeller (Google)*
6944 * Use type ossl_ssize_t instead of ssize_t which isn't available on
6945 all platforms. Move ssize_t definition from e_os.h to the public
6946 header file e_os2.h as it now appears in public header file cms.h
6950 * New -sigopt option to the ca, req and x509 utilities. Additional
6951 signature parameters can be passed using this option and in
6956 * Add RSA PSS signing function. This will generate and set the
6957 appropriate AlgorithmIdentifiers for PSS based on those in the
6958 corresponding EVP_MD_CTX structure. No application support yet.
6962 * Support for companion algorithm specific ASN1 signing routines.
6963 New function ASN1_item_sign_ctx() signs a pre-initialised
6964 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
6965 the appropriate parameters.
6969 * Add new algorithm specific ASN1 verification initialisation function
6970 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
6971 handling will be the same no matter what EVP_PKEY_METHOD is used.
6972 Add a PSS handler to support verification of PSS signatures: checked
6973 against a number of sample certificates.
6977 * Add signature printing for PSS. Add PSS OIDs.
6979 *Steve Henson, Martin Kaiser <lists@kaiser.cx>*
6981 * Add algorithm specific signature printing. An individual ASN1 method
6982 can now print out signatures instead of the standard hex dump.
6984 More complex signatures (e.g. PSS) can print out more meaningful
6985 information. Include DSA version that prints out the signature
6990 * Password based recipient info support for CMS library: implementing
6995 * Split password based encryption into PBES2 and PBKDF2 functions. This
6996 neatly separates the code into cipher and PBE sections and is required
6997 for some algorithms that split PBES2 into separate pieces (such as
6998 password based CMS).
7002 * Session-handling fixes:
7003 - Fix handling of connections that are resuming with a session ID,
7004 but also support Session Tickets.
7005 - Fix a bug that suppressed issuing of a new ticket if the client
7006 presented a ticket with an expired session.
7007 - Try to set the ticket lifetime hint to something reasonable.
7008 - Make tickets shorter by excluding irrelevant information.
7009 - On the client side, don't ignore renewed tickets.
7011 *Adam Langley, Bodo Moeller (Google)*
7013 * Fix PSK session representation.
7017 * Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
7019 This work was sponsored by Intel.
7023 * Add GCM support to TLS library. Some custom code is needed to split
7024 the IV between the fixed (from PRF) and explicit (from TLS record)
7025 portions. This adds all GCM ciphersuites supported by RFC5288 and
7026 RFC5289. Generalise some `AES*` cipherstrings to include GCM and
7027 add a special AESGCM string for GCM only.
7031 * Expand range of ctrls for AES GCM. Permit setting invocation
7032 field on decrypt and retrieval of invocation field only on encrypt.
7036 * Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
7037 As required by RFC5289 these ciphersuites cannot be used if for
7038 versions of TLS earlier than 1.2.
7042 * For FIPS capable OpenSSL interpret a NULL default public key method
7043 as unset and return the appropriate default but do *not* set the default.
7044 This means we can return the appropriate method in applications that
7045 switch between FIPS and non-FIPS modes.
7049 * Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
7050 ENGINE is used then we cannot handle that in the FIPS module so we
7051 keep original code iff non-FIPS operations are allowed.
7055 * Add -attime option to openssl utilities.
7057 *Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson*
7059 * Redirect DSA and DH operations to FIPS module in FIPS mode.
7063 * Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
7064 FIPS EC methods unconditionally for now.
7068 * New build option no-ec2m to disable characteristic 2 code.
7072 * Backport libcrypto audit of return value checking from 1.1.0-dev; not
7073 all cases can be covered as some introduce binary incompatibilities.
7077 * Redirect RSA operations to FIPS module including keygen,
7078 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
7082 * Add similar low level API blocking to ciphers.
7086 * Low level digest APIs are not approved in FIPS mode: any attempt
7087 to use these will cause a fatal error. Applications that *really* want
7088 to use them can use the `private_*` version instead.
7092 * Redirect cipher operations to FIPS module for FIPS builds.
7096 * Redirect digest operations to FIPS module for FIPS builds.
7100 * Update build system to add "fips" flag which will link in fipscanister.o
7101 for static and shared library builds embedding a signature if needed.
7105 * Output TLS supported curves in preference order instead of numerical
7106 order. This is currently hardcoded for the highest order curves first.
7107 This should be configurable so applications can judge speed vs strength.
7111 * Add TLS v1.2 server support for client authentication.
7115 * Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
7120 * Functions FIPS_mode_set() and FIPS_mode() which call the underlying
7121 FIPS modules versions.
7125 * Add TLS v1.2 client side support for client authentication. Keep cache
7126 of handshake records longer as we don't know the hash algorithm to use
7127 until after the certificate request message is received.
7131 * Initial TLS v1.2 client support. Add a default signature algorithms
7132 extension including all the algorithms we support. Parse new signature
7133 format in client key exchange. Relax some ECC signing restrictions for
7134 TLS v1.2 as indicated in RFC5246.
7138 * Add server support for TLS v1.2 signature algorithms extension. Switch
7139 to new signature format when needed using client digest preference.
7140 All server ciphersuites should now work correctly in TLS v1.2. No client
7141 support yet and no support for client certificates.
7145 * Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
7146 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
7147 ciphersuites. At present only RSA key exchange ciphersuites work with
7148 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
7149 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
7150 and version checking.
7154 * New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
7155 with this defined it will not be affected by any changes to ssl internal
7156 structures. Add several utility functions to allow openssl application
7157 to work with OPENSSL_NO_SSL_INTERN defined.
7161 * A long standing patch to add support for SRP from EdelWeb (Peter
7162 Sylvester and Christophe Renou) was integrated.
7163 *Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
7164 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
7167 * Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
7171 * Permit abbreviated handshakes when renegotiating using the function
7172 SSL_renegotiate_abbreviated().
7174 *Robin Seggelmann <seggelmann@fh-muenster.de>*
7176 * Add call to ENGINE_register_all_complete() to
7177 ENGINE_load_builtin_engines(), so some implementations get used
7178 automatically instead of needing explicit application support.
7182 * Add support for TLS key exporter as described in RFC5705.
7184 *Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson*
7186 * Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
7187 a few changes are required:
7189 Add SSL_OP_NO_TLSv1_1 flag.
7190 Add TLSv1_1 methods.
7191 Update version checking logic to handle version 1.1.
7192 Add explicit IV handling (ported from DTLS code).
7193 Add command line options to s_client/s_server.
7200 ### Changes between 1.0.0s and 1.0.0t [3 Dec 2015]
7202 * X509_ATTRIBUTE memory leak
7204 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
7205 memory. This structure is used by the PKCS#7 and CMS routines so any
7206 application which reads PKCS#7 or CMS data from untrusted sources is
7207 affected. SSL/TLS is not affected.
7209 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
7215 * Race condition handling PSK identify hint
7217 If PSK identity hints are received by a multi-threaded client then
7218 the values are wrongly updated in the parent SSL_CTX structure. This can
7219 result in a race condition potentially leading to a double free of the
7225 ### Changes between 1.0.0r and 1.0.0s [11 Jun 2015]
7227 * Malformed ECParameters causes infinite loop
7229 When processing an ECParameters structure OpenSSL enters an infinite loop
7230 if the curve specified is over a specially malformed binary polynomial
7233 This can be used to perform denial of service against any
7234 system which processes public keys, certificate requests or
7235 certificates. This includes TLS clients and TLS servers with
7236 client authentication enabled.
7238 This issue was reported to OpenSSL by Joseph Barr-Pixton.
7243 * Exploitable out-of-bounds read in X509_cmp_time
7245 X509_cmp_time does not properly check the length of the ASN1_TIME
7246 string and can read a few bytes out of bounds. In addition,
7247 X509_cmp_time accepts an arbitrary number of fractional seconds in the
7250 An attacker can use this to craft malformed certificates and CRLs of
7251 various sizes and potentially cause a segmentation fault, resulting in
7252 a DoS on applications that verify certificates or CRLs. TLS clients
7253 that verify CRLs are affected. TLS clients and servers with client
7254 authentication enabled may be affected if they use custom verification
7257 This issue was reported to OpenSSL by Robert Swiecki (Google), and
7258 independently by Hanno Böck.
7263 * PKCS7 crash with missing EnvelopedContent
7265 The PKCS#7 parsing code does not handle missing inner EncryptedContent
7266 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
7267 with missing content and trigger a NULL pointer dereference on parsing.
7269 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
7270 structures from untrusted sources are affected. OpenSSL clients and
7271 servers are not affected.
7273 This issue was reported to OpenSSL by Michal Zalewski (Google).
7278 * CMS verify infinite loop with unknown hash function
7280 When verifying a signedData message the CMS code can enter an infinite loop
7281 if presented with an unknown hash function OID. This can be used to perform
7282 denial of service against any system which verifies signedData messages using
7284 This issue was reported to OpenSSL by Johannes Bauer.
7289 * Race condition handling NewSessionTicket
7291 If a NewSessionTicket is received by a multi-threaded client when attempting to
7292 reuse a previous ticket then a race condition can occur potentially leading to
7293 a double free of the ticket data.
7298 ### Changes between 1.0.0q and 1.0.0r [19 Mar 2015]
7300 * Segmentation fault in ASN1_TYPE_cmp fix
7302 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
7303 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
7304 certificate signature algorithm consistency this can be used to crash any
7305 certificate verification operation and exploited in a DoS attack. Any
7306 application which performs certificate verification is vulnerable including
7307 OpenSSL clients and servers which enable client authentication.
7312 * ASN.1 structure reuse memory corruption fix
7314 Reusing a structure in ASN.1 parsing may allow an attacker to cause
7315 memory corruption via an invalid write. Such reuse is and has been
7316 strongly discouraged and is believed to be rare.
7318 Applications that parse structures containing CHOICE or ANY DEFINED BY
7319 components may be affected. Certificate parsing (d2i_X509 and related
7320 functions) are however not affected. OpenSSL clients and servers are
7326 * PKCS7 NULL pointer dereferences fix
7328 The PKCS#7 parsing code does not handle missing outer ContentInfo
7329 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
7330 missing content and trigger a NULL pointer dereference on parsing.
7332 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
7333 otherwise parse PKCS#7 structures from untrusted sources are
7334 affected. OpenSSL clients and servers are not affected.
7336 This issue was reported to OpenSSL by Michal Zalewski (Google).
7341 * DoS via reachable assert in SSLv2 servers fix
7343 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
7344 servers that both support SSLv2 and enable export cipher suites by sending
7345 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
7347 This issue was discovered by Sean Burford (Google) and Emilia Käsper
7348 (OpenSSL development team).
7353 * Use After Free following d2i_ECPrivatekey error fix
7355 A malformed EC private key file consumed via the d2i_ECPrivateKey function
7356 could cause a use after free condition. This, in turn, could cause a double
7357 free in several private key parsing functions (such as d2i_PrivateKey
7358 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
7359 for applications that receive EC private keys from untrusted
7360 sources. This scenario is considered rare.
7362 This issue was discovered by the BoringSSL project and fixed in their
7368 * X509_to_X509_REQ NULL pointer deref fix
7370 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
7371 the certificate key is invalid. This function is rarely used in practice.
7373 This issue was discovered by Brian Carpenter.
7378 * Removed the export ciphers from the DEFAULT ciphers
7382 ### Changes between 1.0.0p and 1.0.0q [15 Jan 2015]
7384 * Build fixes for the Windows and OpenVMS platforms
7386 *Matt Caswell and Richard Levitte*
7388 ### Changes between 1.0.0o and 1.0.0p [8 Jan 2015]
7390 * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
7391 message can cause a segmentation fault in OpenSSL due to a NULL pointer
7392 dereference. This could lead to a Denial Of Service attack. Thanks to
7393 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
7398 * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
7399 dtls1_buffer_record function under certain conditions. In particular this
7400 could occur if an attacker sent repeated DTLS records with the same
7401 sequence number but for the next epoch. The memory leak could be exploited
7402 by an attacker in a Denial of Service attack through memory exhaustion.
7403 Thanks to Chris Mueller for reporting this issue.
7408 * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
7409 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
7410 method would be set to NULL which could later result in a NULL pointer
7411 dereference. Thanks to Frank Schmirler for reporting this issue.
7416 * Abort handshake if server key exchange message is omitted for ephemeral
7419 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
7420 reporting this issue.
7425 * Remove non-export ephemeral RSA code on client and server. This code
7426 violated the TLS standard by allowing the use of temporary RSA keys in
7427 non-export ciphersuites and could be used by a server to effectively
7428 downgrade the RSA key length used to a value smaller than the server
7429 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
7430 INRIA or reporting this issue.
7435 * Fixed issue where DH client certificates are accepted without verification.
7436 An OpenSSL server will accept a DH certificate for client authentication
7437 without the certificate verify message. This effectively allows a client to
7438 authenticate without the use of a private key. This only affects servers
7439 which trust a client certificate authority which issues certificates
7440 containing DH keys: these are extremely rare and hardly ever encountered.
7441 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
7447 * Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
7448 results on some platforms, including x86_64. This bug occurs at random
7449 with a very low probability, and is not known to be exploitable in any
7450 way, though its exact impact is difficult to determine. Thanks to Pieter
7451 Wuille (Blockstream) who reported this issue and also suggested an initial
7452 fix. Further analysis was conducted by the OpenSSL development team and
7453 Adam Langley of Google. The final fix was developed by Andy Polyakov of
7454 the OpenSSL core team.
7459 * Fix various certificate fingerprint issues.
7461 By using non-DER or invalid encodings outside the signed portion of a
7462 certificate the fingerprint can be changed without breaking the signature.
7463 Although no details of the signed portion of the certificate can be changed
7464 this can cause problems with some applications: e.g. those using the
7465 certificate fingerprint for blacklists.
7467 1. Reject signatures with non zero unused bits.
7469 If the BIT STRING containing the signature has non zero unused bits reject
7470 the signature. All current signature algorithms require zero unused bits.
7472 2. Check certificate algorithm consistency.
7474 Check the AlgorithmIdentifier inside TBS matches the one in the
7475 certificate signature. NB: this will result in signature failure
7476 errors for some broken certificates.
7478 Thanks to Konrad Kraszewski from Google for reporting this issue.
7480 3. Check DSA/ECDSA signatures use DER.
7482 Reencode DSA/ECDSA signatures and compare with the original received
7483 signature. Return an error if there is a mismatch.
7485 This will reject various cases including garbage after signature
7486 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
7487 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
7488 (negative or with leading zeroes).
7490 Further analysis was conducted and fixes were developed by Stephen Henson
7491 of the OpenSSL core team.
7497 ### Changes between 1.0.0n and 1.0.0o [15 Oct 2014]
7499 * Session Ticket Memory Leak.
7501 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
7502 integrity of that ticket is first verified. In the event of a session
7503 ticket integrity check failing, OpenSSL will fail to free memory
7504 causing a memory leak. By sending a large number of invalid session
7505 tickets an attacker could exploit this issue in a Denial Of Service
7511 * Build option no-ssl3 is incomplete.
7513 When OpenSSL is configured with "no-ssl3" as a build option, servers
7514 could accept and complete a SSL 3.0 handshake, and clients could be
7515 configured to send them.
7518 *Akamai and the OpenSSL team*
7520 * Add support for TLS_FALLBACK_SCSV.
7521 Client applications doing fallback retries should call
7522 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
7525 *Adam Langley, Bodo Moeller*
7527 * Add additional DigestInfo checks.
7529 Reencode DigestInto in DER and check against the original when
7530 verifying RSA signature: this will reject any improperly encoded
7531 DigestInfo structures.
7533 Note: this is a precautionary measure and no attacks are currently known.
7537 ### Changes between 1.0.0m and 1.0.0n [6 Aug 2014]
7539 * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
7540 to a denial of service attack. A malicious server can crash the client
7541 with a null pointer dereference (read) by specifying an anonymous (EC)DH
7542 ciphersuite and sending carefully crafted handshake messages.
7544 Thanks to Felix Gröbert (Google) for discovering and researching this
7550 * By sending carefully crafted DTLS packets an attacker could cause openssl
7551 to leak memory. This can be exploited through a Denial of Service attack.
7552 Thanks to Adam Langley for discovering and researching this issue.
7557 * An attacker can force openssl to consume large amounts of memory whilst
7558 processing DTLS handshake messages. This can be exploited through a
7559 Denial of Service attack.
7560 Thanks to Adam Langley for discovering and researching this issue.
7565 * An attacker can force an error condition which causes openssl to crash
7566 whilst processing DTLS packets due to memory being freed twice. This
7567 can be exploited through a Denial of Service attack.
7568 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
7574 * If a multithreaded client connects to a malicious server using a resumed
7575 session and the server sends an ec point format extension it could write
7576 up to 255 bytes to freed memory.
7578 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
7584 * A flaw in OBJ_obj2txt may cause pretty printing functions such as
7585 X509_name_oneline, X509_name_print_ex et al. to leak some information
7586 from the stack. Applications may be affected if they echo pretty printing
7587 output to the attacker.
7589 Thanks to Ivan Fratric (Google) for discovering this issue.
7592 *Emilia Käsper, and Steve Henson*
7594 * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
7595 for corner cases. (Certain input points at infinity could lead to
7596 bogus results, with non-infinity inputs mapped to infinity too.)
7600 ### Changes between 1.0.0l and 1.0.0m [5 Jun 2014]
7602 * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
7603 handshake can force the use of weak keying material in OpenSSL
7604 SSL/TLS clients and servers.
7606 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
7607 researching this issue. ([CVE-2014-0224])
7609 *KIKUCHI Masashi, Steve Henson*
7611 * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
7612 OpenSSL DTLS client the code can be made to recurse eventually crashing
7615 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
7618 *Imre Rad, Steve Henson*
7620 * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
7621 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
7622 client or server. This is potentially exploitable to run arbitrary
7623 code on a vulnerable client or server.
7625 Thanks to Jüri Aedla for reporting this issue. ([CVE-2014-0195])
7627 *Jüri Aedla, Steve Henson*
7629 * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
7630 are subject to a denial of service attack.
7632 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
7633 this issue. ([CVE-2014-3470])
7635 *Felix Gröbert, Ivan Fratric, Steve Henson*
7637 * Harmonize version and its documentation. -f flag is used to display
7640 *mancha <mancha1@zoho.com>*
7642 * Fix eckey_priv_encode so it immediately returns an error upon a failure
7643 in i2d_ECPrivateKey.
7645 *mancha <mancha1@zoho.com>*
7647 * Fix some double frees. These are not thought to be exploitable.
7649 *mancha <mancha1@zoho.com>*
7651 * Fix for the attack described in the paper "Recovering OpenSSL
7652 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
7653 by Yuval Yarom and Naomi Benger. Details can be obtained from:
7654 <http://eprint.iacr.org/2014/140>
7656 Thanks to Yuval Yarom and Naomi Benger for discovering this
7657 flaw and to Yuval Yarom for supplying a fix ([CVE-2014-0076])
7659 *Yuval Yarom and Naomi Benger*
7661 ### Changes between 1.0.0k and 1.0.0l [6 Jan 2014]
7663 * Keep original DTLS digest and encryption contexts in retransmission
7664 structures so we can use the previous session parameters if they need
7665 to be resent. ([CVE-2013-6450])
7669 * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
7670 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
7671 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
7672 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
7673 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
7674 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
7676 *Rob Stradling, Adam Langley*
7678 ### Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
7680 * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
7682 This addresses the flaw in CBC record processing discovered by
7683 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
7684 at: <http://www.isg.rhul.ac.uk/tls/>
7686 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
7687 Security Group at Royal Holloway, University of London
7688 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
7689 Emilia Käsper for the initial patch.
7692 *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
7694 * Return an error when checking OCSP signatures when key is NULL.
7695 This fixes a DoS attack. ([CVE-2013-0166])
7699 * Call OCSP Stapling callback after ciphersuite has been chosen, so
7700 the right response is stapled. Also change SSL_get_certificate()
7701 so it returns the certificate actually sent.
7702 See <http://rt.openssl.org/Ticket/Display.html?id=2836>.
7703 (This is a backport)
7705 *Rob Stradling <rob.stradling@comodo.com>*
7707 * Fix possible deadlock when decoding public keys.
7711 ### Changes between 1.0.0i and 1.0.0j [10 May 2012]
7713 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
7716 * Sanity check record length before skipping explicit IV in DTLS
7719 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
7720 fuzzing as a service testing platform.
7725 * Initialise tkeylen properly when encrypting CMS messages.
7726 Thanks to Solar Designer of Openwall for reporting this issue.
7730 ### Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
7732 * Check for potentially exploitable overflows in asn1_d2i_read_bio
7733 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
7734 in CRYPTO_realloc_clean.
7736 Thanks to Tavis Ormandy, Google Security Team, for discovering this
7737 issue and to Adam Langley <agl@chromium.org> for fixing it.
7740 *Adam Langley (Google), Tavis Ormandy, Google Security Team*
7742 ### Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
7744 * Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
7745 in CMS and PKCS7 code. When RSA decryption fails use a random key for
7746 content decryption and always return the same error. Note: this attack
7747 needs on average 2^20 messages so it only affects automated senders. The
7748 old behaviour can be re-enabled in the CMS code by setting the
7749 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
7750 an MMA defence is not necessary.
7751 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
7752 this issue. ([CVE-2012-0884])
7756 * Fix CVE-2011-4619: make sure we really are receiving a
7757 client hello before rejecting multiple SGC restarts. Thanks to
7758 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
7762 ### Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
7764 * Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
7765 Thanks to Antonio Martin, Enterprise Secure Access Research and
7766 Development, Cisco Systems, Inc. for discovering this bug and
7767 preparing a fix. ([CVE-2012-0050])
7771 ### Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
7773 * Nadhem Alfardan and Kenny Paterson have discovered an extension
7774 of the Vaudenay padding oracle attack on CBC mode encryption
7775 which enables an efficient plaintext recovery attack against
7776 the OpenSSL implementation of DTLS. Their attack exploits timing
7777 differences arising during decryption processing. A research
7778 paper describing this attack can be found at:
7779 <http://www.isg.rhul.ac.uk/~kp/dtls.pdf>
7780 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
7781 Security Group at Royal Holloway, University of London
7782 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
7783 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
7784 for preparing the fix. ([CVE-2011-4108])
7786 *Robin Seggelmann, Michael Tuexen*
7788 * Clear bytes used for block padding of SSL 3.0 records.
7791 *Adam Langley (Google)*
7793 * Only allow one SGC handshake restart for SSL/TLS. Thanks to George
7794 Kadianakis <desnacked@gmail.com> for discovering this issue and
7795 Adam Langley for preparing the fix. ([CVE-2011-4619])
7797 *Adam Langley (Google)*
7799 * Check parameters are not NULL in GOST ENGINE. ([CVE-2012-0027])
7801 *Andrey Kulikov <amdeich@gmail.com>*
7803 * Prevent malformed RFC3779 data triggering an assertion failure.
7804 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
7805 and Rob Austein <sra@hactrn.net> for fixing it. ([CVE-2011-4577])
7807 *Rob Austein <sra@hactrn.net>*
7809 * Improved PRNG seeding for VOS.
7811 *Paul Green <Paul.Green@stratus.com>*
7813 * Fix ssl_ciph.c set-up race.
7815 *Adam Langley (Google)*
7817 * Fix spurious failures in ecdsatest.c.
7819 *Emilia Käsper (Google)*
7821 * Fix the BIO_f_buffer() implementation (which was mixing different
7822 interpretations of the `..._len` fields).
7824 *Adam Langley (Google)*
7826 * Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
7827 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
7828 threads won't reuse the same blinding coefficients.
7830 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
7831 lock to call BN_BLINDING_invert_ex, and avoids one use of
7832 BN_BLINDING_update for each BN_BLINDING structure (previously,
7833 the last update always remained unused).
7835 *Emilia Käsper (Google)*
7837 * In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
7839 *Bob Buckholz (Google)*
7841 ### Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
7843 * Fix bug where CRLs with nextUpdate in the past are sometimes accepted
7844 by initialising X509_STORE_CTX properly. ([CVE-2011-3207])
7846 *Kaspar Brand <ossl@velox.ch>*
7848 * Fix SSL memory handling for (EC)DH ciphersuites, in particular
7849 for multi-threaded use of ECDH. ([CVE-2011-3210])
7851 *Adam Langley (Google)*
7853 * Fix x509_name_ex_d2i memory leak on bad inputs.
7857 * Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
7858 signature public key algorithm by using OID xref utilities instead.
7859 Before this you could only use some ECC ciphersuites with SHA1 only.
7863 * Add protection against ECDSA timing attacks as mentioned in the paper
7864 by Billy Bob Brumley and Nicola Tuveri, see:
7865 <http://eprint.iacr.org/2011/232.pdf>
7867 *Billy Bob Brumley and Nicola Tuveri*
7869 ### Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
7871 * Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
7873 *Neel Mehta, Adam Langley, Bodo Moeller (Google)*
7875 * Fix bug in string printing code: if *any* escaping is enabled we must
7876 escape the escape character (backslash) or the resulting string is
7881 ### Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
7883 * Disable code workaround for ancient and obsolete Netscape browsers
7884 and servers: an attacker can use it in a ciphersuite downgrade attack.
7885 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
7889 * Fixed J-PAKE implementation error, originally discovered by
7890 Sebastien Martini, further info and confirmation from Stefan
7891 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
7895 ### Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
7897 * Fix extension code to avoid race conditions which can result in a buffer
7898 overrun vulnerability: resumed sessions must not be modified as they can
7899 be shared by multiple threads. CVE-2010-3864
7903 * Fix WIN32 build system to correctly link an ENGINE directory into
7908 ### Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
7910 * Check return value of int_rsa_verify in pkey_rsa_verifyrecover
7913 *Steve Henson, Peter-Michael Hager <hager@dortmund.net>*
7915 ### Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
7917 * Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
7918 context. The operation can be customised via the ctrl mechanism in
7919 case ENGINEs want to include additional functionality.
7923 * Tolerate yet another broken PKCS#8 key format: private key value negative.
7927 * Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
7928 output hashes compatible with older versions of OpenSSL.
7930 *Willy Weisz <weisz@vcpc.univie.ac.at>*
7932 * Fix compression algorithm handling: if resuming a session use the
7933 compression algorithm of the resumed session instead of determining
7934 it from client hello again. Don't allow server to change algorithm.
7938 * Add load_crls() function to apps tidying load_certs() too. Add option
7939 to verify utility to allow additional CRLs to be included.
7943 * Update OCSP request code to permit adding custom headers to the request:
7944 some responders need this.
7948 * The function EVP_PKEY_sign() returns <=0 on error: check return code
7951 *Julia Lawall <julia@diku.dk>*
7953 * Update verify callback code in apps/s_cb.c and apps/verify.c, it
7954 needlessly dereferenced structures, used obsolete functions and
7955 didn't handle all updated verify codes correctly.
7959 * Disable MD2 in the default configuration.
7963 * In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
7964 indicate the initial BIO being pushed or popped. This makes it possible
7965 to determine whether the BIO is the one explicitly called or as a result
7966 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
7967 it handles reference counts correctly and doesn't zero out the I/O bio
7968 when it is not being explicitly popped. WARNING: applications which
7969 included workarounds for the old buggy behaviour will need to be modified
7970 or they could free up already freed BIOs.
7974 * Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
7975 renaming to all platforms (within the 0.9.8 branch, this was
7976 done conditionally on Netware platforms to avoid a name clash).
7978 *Guenter <lists@gknw.net>*
7980 * Add ECDHE and PSK support to DTLS.
7982 *Michael Tuexen <tuexen@fh-muenster.de>*
7984 * Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
7989 * Add "missing" function EVP_MD_flags() (without this the only way to
7990 retrieve a digest flags is by accessing the structure directly. Update
7991 `EVP_MD_do_all*()` and `EVP_CIPHER_do_all*()` to include the name a digest
7992 or cipher is registered as in the "from" argument. Print out all
7993 registered digests in the dgst usage message instead of manually
7994 attempting to work them out.
7998 * If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
7999 this allows the use of compression and extensions. Change default cipher
8000 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
8001 by default unless an application cipher string requests it.
8005 * Alter match criteria in PKCS12_parse(). It used to try to use local
8006 key ids to find matching certificates and keys but some PKCS#12 files
8007 don't follow the (somewhat unwritten) rules and this strategy fails.
8008 Now just gather all certificates together and the first private key
8009 then look for the first certificate that matches the key.
8013 * Support use of registered digest and cipher names for dgst and cipher
8014 commands instead of having to add each one as a special case. So now
8021 openssl dgst -sha256 foo
8023 and this works for ENGINE based algorithms too.
8027 * Update Gost ENGINE to support parameter files.
8029 *Victor B. Wagner <vitus@cryptocom.ru>*
8031 * Support GeneralizedTime in ca utility.
8033 *Oliver Martin <oliver@volatilevoid.net>, Steve Henson*
8035 * Enhance the hash format used for certificate directory links. The new
8036 form uses the canonical encoding (meaning equivalent names will work
8037 even if they aren't identical) and uses SHA1 instead of MD5. This form
8038 is incompatible with the older format and as a result c_rehash should
8039 be used to rebuild symbolic links.
8043 * Make PKCS#8 the default write format for private keys, replacing the
8044 traditional format. This form is standardised, more secure and doesn't
8045 include an implicit MD5 dependency.
8049 * Add a $gcc_devteam_warn option to Configure. The idea is that any code
8050 committed to OpenSSL should pass this lot as a minimum.
8054 * Add session ticket override functionality for use by EAP-FAST.
8056 *Jouni Malinen <j@w1.fi>*
8058 * Modify HMAC functions to return a value. Since these can be implemented
8059 in an ENGINE errors can occur.
8063 * Type-checked OBJ_bsearch_ex.
8067 * Type-checked OBJ_bsearch. Also some constification necessitated
8068 by type-checking. Still to come: TXT_DB, bsearch(?),
8069 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
8074 * New function OPENSSL_gmtime_adj() to add a specific number of days and
8075 seconds to a tm structure directly, instead of going through OS
8076 specific date routines. This avoids any issues with OS routines such
8077 as the year 2038 bug. New `*_adj()` functions for ASN1 time structures
8078 and X509_time_adj_ex() to cover the extended range. The existing
8079 X509_time_adj() is still usable and will no longer have any date issues.
8083 * Delta CRL support. New use deltas option which will attempt to locate
8084 and search any appropriate delta CRLs available.
8086 This work was sponsored by Google.
8090 * Support for CRLs partitioned by reason code. Reorganise CRL processing
8091 code and add additional score elements. Validate alternate CRL paths
8092 as part of the CRL checking and indicate a new error "CRL path validation
8093 error" in this case. Applications wanting additional details can use
8094 the verify callback and check the new "parent" field. If this is not
8095 NULL CRL path validation is taking place. Existing applications won't
8096 see this because it requires extended CRL support which is off by
8099 This work was sponsored by Google.
8103 * Support for freshest CRL extension.
8105 This work was sponsored by Google.
8109 * Initial indirect CRL support. Currently only supported in the CRLs
8110 passed directly and not via lookup. Process certificate issuer
8111 CRL entry extension and lookup CRL entries by bother issuer name
8112 and serial number. Check and process CRL issuer entry in IDP extension.
8114 This work was sponsored by Google.
8118 * Add support for distinct certificate and CRL paths. The CRL issuer
8119 certificate is validated separately in this case. Only enabled if
8120 an extended CRL support flag is set: this flag will enable additional
8121 CRL functionality in future.
8123 This work was sponsored by Google.
8127 * Add support for policy mappings extension.
8129 This work was sponsored by Google.
8133 * Fixes to pathlength constraint, self issued certificate handling,
8134 policy processing to align with RFC3280 and PKITS tests.
8136 This work was sponsored by Google.
8140 * Support for name constraints certificate extension. DN, email, DNS
8141 and URI types are currently supported.
8143 This work was sponsored by Google.
8147 * To cater for systems that provide a pointer-based thread ID rather
8148 than numeric, deprecate the current numeric thread ID mechanism and
8149 replace it with a structure and associated callback type. This
8150 mechanism allows a numeric "hash" to be extracted from a thread ID in
8151 either case, and on platforms where pointers are larger than 'long',
8152 mixing is done to help ensure the numeric 'hash' is usable even if it
8153 can't be guaranteed unique. The default mechanism is to use "&errno"
8154 as a pointer-based thread ID to distinguish between threads.
8156 Applications that want to provide their own thread IDs should now use
8157 CRYPTO_THREADID_set_callback() to register a callback that will call
8158 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
8160 Note that ERR_remove_state() is now deprecated, because it is tied
8161 to the assumption that thread IDs are numeric. ERR_remove_state(0)
8162 to free the current thread's error state should be replaced by
8163 ERR_remove_thread_state(NULL).
8165 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
8166 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
8167 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
8168 application was previously providing a numeric thread callback that
8169 was inappropriate for distinguishing threads, then uniqueness might
8170 have been obtained with &errno that happened immediately in the
8171 intermediate development versions of OpenSSL; this is no longer the
8172 case, the numeric thread callback will now override the automatic use
8175 *Geoff Thorpe, with help from Bodo Moeller*
8177 * Initial support for different CRL issuing certificates. This covers a
8178 simple case where the self issued certificates in the chain exist and
8179 the real CRL issuer is higher in the existing chain.
8181 This work was sponsored by Google.
8185 * Removed effectively defunct crypto/store from the build.
8189 * Revamp of STACK to provide stronger type-checking. Still to come:
8190 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
8191 ASN1_STRING, CONF_VALUE.
8195 * Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
8196 RAM on SSL connections. This option can save about 34k per idle SSL.
8200 * Revamp of LHASH to provide stronger type-checking. Still to come:
8201 STACK, TXT_DB, bsearch, qsort.
8205 * Initial support for Cryptographic Message Syntax (aka CMS) based
8206 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
8207 support for data, signedData, compressedData, digestedData and
8208 encryptedData, envelopedData types included. Scripts to check against
8209 RFC4134 examples draft and interop and consistency checks of many
8210 content types and variants.
8214 * Add options to enc utility to support use of zlib compression BIO.
8218 * Extend mk1mf to support importing of options and assembly language
8219 files from Configure script, currently only included in VC-WIN32.
8220 The assembly language rules can now optionally generate the source
8221 files from the associated perl scripts.
8225 * Implement remaining functionality needed to support GOST ciphersuites.
8226 Interop testing has been performed using CryptoPro implementations.
8228 *Victor B. Wagner <vitus@cryptocom.ru>*
8230 * s390x assembler pack.
8234 * ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
8239 * Implement Opaque PRF Input TLS extension as specified in
8240 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
8241 official specification yet and no extension type assignment by
8242 IANA exists, this extension (for now) will have to be explicitly
8243 enabled when building OpenSSL by providing the extension number
8244 to use. For example, specify an option
8246 -DTLSEXT_TYPE_opaque_prf_input=0x9527
8248 to the "config" or "Configure" script to enable the extension,
8249 assuming extension number 0x9527 (which is a completely arbitrary
8250 and unofficial assignment based on the MD5 hash of the Internet
8251 Draft). Note that by doing so, you potentially lose
8252 interoperability with other TLS implementations since these might
8253 be using the same extension number for other purposes.
8255 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
8256 opaque PRF input value to use in the handshake. This will create
8257 an internal copy of the length-'len' string at 'src', and will
8258 return non-zero for success.
8260 To get more control and flexibility, provide a callback function
8263 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
8264 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
8268 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
8271 Callback function 'cb' will be called in handshakes, and is
8272 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
8273 Argument 'arg' is for application purposes (the value as given to
8274 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
8275 be provided to the callback function). The callback function
8276 has to return non-zero to report success: usually 1 to use opaque
8277 PRF input just if possible, or 2 to enforce use of the opaque PRF
8278 input. In the latter case, the library will abort the handshake
8279 if opaque PRF input is not successfully negotiated.
8281 Arguments 'peerinput' and 'len' given to the callback function
8282 will always be NULL and 0 in the case of a client. A server will
8283 see the client's opaque PRF input through these variables if
8284 available (NULL and 0 otherwise). Note that if the server
8285 provides an opaque PRF input, the length must be the same as the
8286 length of the client's opaque PRF input.
8288 Note that the callback function will only be called when creating
8289 a new session (session resumption can resume whatever was
8290 previously negotiated), and will not be called in SSL 2.0
8291 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
8292 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
8293 for applications that need to enforce opaque PRF input.
8297 * Update ssl code to support digests other than SHA1+MD5 for handshake
8300 *Victor B. Wagner <vitus@cryptocom.ru>*
8302 * Add RFC4507 support to OpenSSL. This includes the corrections in
8303 RFC4507bis. The encrypted ticket format is an encrypted encoded
8304 SSL_SESSION structure, that way new session features are automatically
8307 If a client application caches session in an SSL_SESSION structure
8308 support is transparent because tickets are now stored in the encoded
8311 The SSL_CTX structure automatically generates keys for ticket
8312 protection in servers so again support should be possible
8313 with no application modification.
8315 If a client or server wishes to disable RFC4507 support then the option
8316 SSL_OP_NO_TICKET can be set.
8318 Add a TLS extension debugging callback to allow the contents of any client
8319 or server extensions to be examined.
8321 This work was sponsored by Google.
8325 * Final changes to avoid use of pointer pointer casts in OpenSSL.
8326 OpenSSL should now compile cleanly on gcc 4.2
8328 *Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson*
8330 * Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
8331 support including streaming MAC support: this is required for GOST
8332 ciphersuite support.
8334 *Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson*
8336 * Add option -stream to use PKCS#7 streaming in smime utility. New
8337 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
8338 to output in BER and PEM format.
8342 * Experimental support for use of HMAC via EVP_PKEY interface. This
8343 allows HMAC to be handled via the `EVP_DigestSign*()` interface. The
8344 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
8345 ENGINE support for HMAC keys which are unextractable. New -mac and
8346 -macopt options to dgst utility.
8350 * New option -sigopt to dgst utility. Update dgst to use
8351 `EVP_Digest{Sign,Verify}*`. These two changes make it possible to use
8352 alternative signing parameters such as X9.31 or PSS in the dgst
8357 * Change ssl_cipher_apply_rule(), the internal function that does
8358 the work each time a ciphersuite string requests enabling
8359 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
8360 removing ("!foo+bar") a class of ciphersuites: Now it maintains
8361 the order of disabled ciphersuites such that those ciphersuites
8362 that most recently went from enabled to disabled not only stay
8363 in order with respect to each other, but also have higher priority
8364 than other disabled ciphersuites the next time ciphersuites are
8367 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
8368 the same ciphersuites as with "HIGH" alone, but in a specific
8369 order where the PSK ciphersuites come first (since they are the
8370 most recently disabled ciphersuites when "HIGH" is parsed).
8372 Also, change ssl_create_cipher_list() (using this new
8373 functionality) such that between otherwise identical
8374 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
8379 * Change ssl_create_cipher_list() so that it automatically
8380 arranges the ciphersuites in reasonable order before starting
8381 to process the rule string. Thus, the definition for "DEFAULT"
8382 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
8383 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
8384 This makes it much easier to arrive at a reasonable default order
8385 in applications for which anonymous ciphers are OK (meaning
8386 that you can't actually use DEFAULT).
8388 *Bodo Moeller; suggested by Victor Duchovni*
8390 * Split the SSL/TLS algorithm mask (as used for ciphersuite string
8391 processing) into multiple integers instead of setting
8392 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
8393 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
8394 (These masks as well as the individual bit definitions are hidden
8395 away into the non-exported interface ssl/ssl_locl.h, so this
8396 change to the definition of the SSL_CIPHER structure shouldn't
8397 affect applications.) This give us more bits for each of these
8398 categories, so there is no longer a need to coagulate AES128 and
8399 AES256 into a single algorithm bit, and to coagulate Camellia128
8400 and Camellia256 into a single algorithm bit, which has led to all
8403 Thus, among other things, the kludge introduced in 0.9.7m and
8404 0.9.8e for masking out AES256 independently of AES128 or masking
8405 out Camellia256 independently of AES256 is not needed here in 0.9.9.
8407 With the change, we also introduce new ciphersuite aliases that
8408 so far were missing: "AES128", "AES256", "CAMELLIA128", and
8413 * Add support for dsa-with-SHA224 and dsa-with-SHA256.
8414 Use the leftmost N bytes of the signature input if the input is
8415 larger than the prime q (with N being the size in bytes of q).
8419 * Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
8420 it yet and it is largely untested.
8424 * Add support for the ecdsa-with-SHA224/256/384/512 signature types.
8428 * Initial incomplete changes to avoid need for function casts in OpenSSL
8429 some compilers (gcc 4.2 and later) reject their use. Safestack is
8430 reimplemented. Update ASN1 to avoid use of legacy functions.
8434 * Win32/64 targets are linked with Winsock2.
8438 * Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
8439 to external functions. This can be used to increase CRL handling
8440 efficiency especially when CRLs are very large by (for example) storing
8441 the CRL revoked certificates in a database.
8445 * Overhaul of by_dir code. Add support for dynamic loading of CRLs so
8446 new CRLs added to a directory can be used. New command line option
8447 -verify_return_error to s_client and s_server. This causes real errors
8448 to be returned by the verify callback instead of carrying on no matter
8449 what. This reflects the way a "real world" verify callback would behave.
8453 * GOST engine, supporting several GOST algorithms and public key formats.
8454 Kindly donated by Cryptocom.
8458 * Partial support for Issuing Distribution Point CRL extension. CRLs
8459 partitioned by DP are handled but no indirect CRL or reason partitioning
8460 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
8461 selected via a scoring technique which handles IDP and AKID in CRLs.
8465 * New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
8466 will ultimately be used for all verify operations: this will remove the
8467 X509_STORE dependency on certificate verification and allow alternative
8468 lookup methods. X509_STORE based implementations of these two callbacks.
8472 * Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
8473 Modify get_crl() to find a valid (unexpired) CRL if possible.
8477 * New function X509_CRL_match() to check if two CRLs are identical. Normally
8478 this would be called X509_CRL_cmp() but that name is already used by
8479 a function that just compares CRL issuer names. Cache several CRL
8480 extensions in X509_CRL structure and cache CRLDP in X509.
8484 * Store a "canonical" representation of X509_NAME structure (ASN1 Name)
8485 this maps equivalent X509_NAME structures into a consistent structure.
8486 Name comparison can then be performed rapidly using memcmp().
8490 * Non-blocking OCSP request processing. Add -timeout option to ocsp
8495 * Allow digests to supply their own micalg string for S/MIME type using
8496 the ctrl EVP_MD_CTRL_MICALG.
8500 * During PKCS7 signing pass the PKCS7 SignerInfo structure to the
8501 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
8502 ctrl. It can then customise the structure before and/or after signing
8507 * New function OBJ_add_sigid() to allow application defined signature OIDs
8508 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
8509 to free up any added signature OIDs.
8513 * New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
8514 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
8515 digest and cipher tables. New options added to openssl utility:
8516 list-message-digest-algorithms and list-cipher-algorithms.
8520 * Change the array representation of binary polynomials: the list
8521 of degrees of non-zero coefficients is now terminated with -1.
8522 Previously it was terminated with 0, which was also part of the
8523 value; thus, the array representation was not applicable to
8524 polynomials where t^0 has coefficient zero. This change makes
8525 the array representation useful in a more general context.
8529 * Various modifications and fixes to SSL/TLS cipher string
8530 handling. For ECC, the code now distinguishes between fixed ECDH
8531 with RSA certificates on the one hand and with ECDSA certificates
8532 on the other hand, since these are separate ciphersuites. The
8533 unused code for Fortezza ciphersuites has been removed.
8535 For consistency with EDH, ephemeral ECDH is now called "EECDH"
8536 (not "ECDHE"). For consistency with the code for DH
8537 certificates, use of ECDH certificates is now considered ECDH
8538 authentication, not RSA or ECDSA authentication (the latter is
8539 merely the CA's signing algorithm and not actively used in the
8542 The temporary ciphersuite alias "ECCdraft" is no longer
8543 available, and ECC ciphersuites are no longer excluded from "ALL"
8544 and "DEFAULT". The following aliases now exist for RFC 4492
8545 ciphersuites, most of these by analogy with the DH case:
8547 kECDHr - ECDH cert, signed with RSA
8548 kECDHe - ECDH cert, signed with ECDSA
8549 kECDH - ECDH cert (signed with either RSA or ECDSA)
8550 kEECDH - ephemeral ECDH
8551 ECDH - ECDH cert or ephemeral ECDH
8557 AECDH - anonymous ECDH
8558 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
8562 * Add additional S/MIME capabilities for AES and GOST ciphers if supported.
8563 Use correct micalg parameters depending on digest(s) in signed message.
8567 * Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
8568 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
8572 * Initial engine support for EVP_PKEY_METHOD. New functions to permit
8573 an engine to register a method. Add ENGINE lookups for methods and
8574 functional reference processing.
8578 * New functions `EVP_Digest{Sign,Verify)*`. These are enhanced versions of
8579 `EVP_{Sign,Verify}*` which allow an application to customise the signature
8584 * New -resign option to smime utility. This adds one or more signers
8585 to an existing PKCS#7 signedData structure. Also -md option to use an
8586 alternative message digest algorithm for signing.
8590 * Tidy up PKCS#7 routines and add new functions to make it easier to
8591 create PKCS7 structures containing multiple signers. Update smime
8592 application to support multiple signers.
8596 * New -macalg option to pkcs12 utility to allow setting of an alternative
8601 * Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
8602 Reorganize PBE internals to lookup from a static table using NIDs,
8603 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
8604 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
8605 PRF which will be automatically used with PBES2.
8609 * Replace the algorithm specific calls to generate keys in "req" with the
8614 * Update PKCS#7 enveloped data routines to use new API. This is now
8615 supported by any public key method supporting the encrypt operation. A
8616 ctrl is added to allow the public key algorithm to examine or modify
8617 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
8622 * Add a ctrl to asn1 method to allow a public key algorithm to express
8623 a default digest type to use. In most cases this will be SHA1 but some
8624 algorithms (such as GOST) need to specify an alternative digest. The
8625 return value indicates how strong the preference is 1 means optional and
8626 2 is mandatory (that is it is the only supported type). Modify
8627 ASN1_item_sign() to accept a NULL digest argument to indicate it should
8628 use the default md. Update openssl utilities to use the default digest
8629 type for signing if it is not explicitly indicated.
8633 * Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
8634 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
8635 signing method from the key type. This effectively removes the link
8636 between digests and public key types.
8640 * Add an OID cross reference table and utility functions. Its purpose is to
8641 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
8642 rsaEncryption. This will allow some of the algorithm specific hackery
8643 needed to use the correct OID to be removed.
8647 * Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
8648 structures for PKCS7_sign(). They are now set up by the relevant public
8653 * Add provisional EC pkey method with support for ECDSA and ECDH.
8657 * Add support for key derivation (agreement) in the API, DH method and
8662 * Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
8663 public and private key formats. As a side effect these add additional
8664 command line functionality not previously available: DSA signatures can be
8665 generated and verified using pkeyutl and DH key support and generation in
8672 *Oliver Tappe <zooey@hirschkaefer.de>*
8674 * New make target "install_html_docs" installs HTML renditions of the
8677 *Oliver Tappe <zooey@hirschkaefer.de>*
8679 * New utility "genpkey" this is analogous to "genrsa" etc except it can
8680 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
8681 support key and parameter generation and add initial key generation
8682 functionality for RSA.
8686 * Add functions for main EVP_PKEY_method operations. The undocumented
8687 functions `EVP_PKEY_{encrypt,decrypt}` have been renamed to
8688 `EVP_PKEY_{encrypt,decrypt}_old`.
8692 * Initial definitions for EVP_PKEY_METHOD. This will be a high level public
8693 key API, doesn't do much yet.
8697 * New function EVP_PKEY_asn1_get0_info() to retrieve information about
8698 public key algorithms. New option to openssl utility:
8699 "list-public-key-algorithms" to print out info.
8703 * Implement the Supported Elliptic Curves Extension for
8704 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
8708 * Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
8709 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
8713 * New utilities pkey and pkeyparam. These are similar to algorithm specific
8714 utilities such as rsa, dsa, dsaparam etc except they process any key
8719 * Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
8720 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
8721 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
8726 * Initial support for pluggable public key ASN1.
8727 De-spaghettify the public key ASN1 handling. Move public and private
8728 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
8729 algorithm specific handling to a single module within the relevant
8730 algorithm directory. Add functions to allow (near) opaque processing
8731 of public and private key structures.
8735 * Implement the Supported Point Formats Extension for
8736 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
8740 * Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
8741 for the psk identity [hint] and the psk callback functions to the
8742 SSL_SESSION, SSL and SSL_CTX structure.
8745 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
8749 SSL_CTX_use_psk_identity_hint
8750 SSL_get_psk_identity_hint
8751 SSL_get_psk_identity
8752 SSL_use_psk_identity_hint
8754 *Mika Kousa and Pasi Eronen of Nokia Corporation*
8756 * Add RFC 3161 compliant time stamp request creation, response generation
8757 and response verification functionality.
8759 *Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project*
8761 * Add initial support for TLS extensions, specifically for the server_name
8762 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
8763 have new members for a host name. The SSL data structure has an
8764 additional member `SSL_CTX *initial_ctx` so that new sessions can be
8765 stored in that context to allow for session resumption, even after the
8766 SSL has been switched to a new SSL_CTX in reaction to a client's
8767 server_name extension.
8769 New functions (subject to change):
8771 SSL_get_servername()
8772 SSL_get_servername_type()
8775 New CTRL codes and macros (subject to change):
8777 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
8778 - SSL_CTX_set_tlsext_servername_callback()
8779 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
8780 - SSL_CTX_set_tlsext_servername_arg()
8781 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
8783 openssl s_client has a new '-servername ...' option.
8785 openssl s_server has new options '-servername_host ...', '-cert2 ...',
8786 '-key2 ...', '-servername_fatal' (subject to change). This allows
8787 testing the HostName extension for a specific single host name ('-cert'
8788 and '-key' remain fallbacks for handshakes without HostName
8789 negotiation). If the unrecognized_name alert has to be sent, this by
8790 default is a warning; it becomes fatal with the '-servername_fatal'
8793 *Peter Sylvester, Remy Allais, Christophe Renou*
8795 * Whirlpool hash implementation is added.
8799 * BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
8800 bn(64,32). Because of instruction set limitations it doesn't have
8801 any negative impact on performance. This was done mostly in order
8802 to make it possible to share assembler modules, such as bn_mul_mont
8803 implementations, between 32- and 64-bit builds without hassle.
8807 * Move code previously exiled into file crypto/ec/ec2_smpt.c
8808 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
8813 * New candidate for BIGNUM assembler implementation, bn_mul_mont,
8814 dedicated Montgomery multiplication procedure, is introduced.
8815 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
8816 "64-bit" performance on certain 32-bit targets.
8820 * New option SSL_OP_NO_COMP to disable use of compression selectively
8821 in SSL structures. New SSL ctrl to set maximum send fragment size.
8822 Save memory by setting the I/O buffer sizes dynamically instead of
8823 using the maximum available value.
8827 * New option -V for 'openssl ciphers'. This prints the ciphersuite code
8828 in addition to the text details.
8832 * Very, very preliminary EXPERIMENTAL support for printing of general
8833 ASN1 structures. This currently produces rather ugly output and doesn't
8834 handle several customised structures at all.
8838 * Integrated support for PVK file format and some related formats such
8839 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
8840 these in the 'rsa' and 'dsa' utilities.
8844 * Support for PKCS#1 RSAPublicKey format on rsa utility command line.
8848 * Remove the ancient ASN1_METHOD code. This was only ever used in one
8849 place for the (very old) "NETSCAPE" format certificates which are now
8850 handled using new ASN1 code equivalents.
8854 * Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
8855 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
8856 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
8860 * Modify CRL distribution points extension code to print out previously
8861 unsupported fields. Enhance extension setting code to allow setting of
8866 * Add print and set support for Issuing Distribution Point CRL extension.
8870 * Change 'Configure' script to enable Camellia by default.
8877 ### Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
8879 * When rejecting SSL/TLS records due to an incorrect version number, never
8880 update s->server with a new major version number. As of
8881 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
8882 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
8883 the previous behavior could result in a read attempt at NULL when
8884 receiving specific incorrect SSL/TLS records once record payload
8885 protection is active. ([CVE-2010-0740])
8887 *Bodo Moeller, Adam Langley <agl@chromium.org>*
8889 * Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
8890 could be crashed if the relevant tables were not present (e.g. chrooted).
8892 *Tomas Hoger <thoger@redhat.com>*
8894 ### Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
8896 * Always check bn_wexpand() return values for failure. ([CVE-2009-3245])
8898 *Martin Olsson, Neel Mehta*
8900 * Fix X509_STORE locking: Every 'objs' access requires a lock (to
8901 accommodate for stack sorting, always a write lock!).
8905 * On some versions of WIN32 Heap32Next is very slow. This can cause
8906 excessive delays in the RAND_poll(): over a minute. As a workaround
8907 include a time check in the inner Heap32Next loop too.
8911 * The code that handled flushing of data in SSL/TLS originally used the
8912 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
8913 the problem outlined in PR#1949. The fix suggested there however can
8914 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
8915 of Apache). So instead simplify the code to flush unconditionally.
8916 This should be fine since flushing with no data to flush is a no op.
8920 * Handle TLS versions 2.0 and later properly and correctly use the
8921 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
8922 off ancient servers have a habit of sticking around for a while...
8926 * Modify compression code so it frees up structures without using the
8927 ex_data callbacks. This works around a problem where some applications
8928 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
8929 restarting) then use compression (e.g. SSL with compression) later.
8930 This results in significant per-connection memory leaks and
8931 has caused some security issues including CVE-2008-1678 and
8936 * Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
8937 change when encrypting or decrypting.
8941 * Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
8942 connect and renegotiate with servers which do not support RI.
8943 Until RI is more widely deployed this option is enabled by default.
8947 * Add "missing" ssl ctrls to clear options and mode.
8951 * If client attempts to renegotiate and doesn't support RI respond with
8952 a no_renegotiation alert as required by RFC5746. Some renegotiating
8953 TLS clients will continue a connection gracefully when they receive
8954 the alert. Unfortunately OpenSSL mishandled this alert and would hang
8955 waiting for a server hello which it will never receive. Now we treat a
8956 received no_renegotiation alert as a fatal error. This is because
8957 applications requesting a renegotiation might well expect it to succeed
8958 and would have no code in place to handle the server denying it so the
8959 only safe thing to do is to terminate the connection.
8963 * Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
8964 peer supports secure renegotiation and 0 otherwise. Print out peer
8965 renegotiation support in s_client/s_server.
8969 * Replace the highly broken and deprecated SPKAC certification method with
8970 the updated NID creation version. This should correctly handle UTF8.
8974 * Implement RFC5746. Re-enable renegotiation but require the extension
8975 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
8976 turns out to be a bad idea. It has been replaced by
8977 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
8978 SSL_CTX_set_options(). This is really not recommended unless you
8979 know what you are doing.
8981 *Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson*
8983 * Fixes to stateless session resumption handling. Use initial_ctx when
8984 issuing and attempting to decrypt tickets in case it has changed during
8985 servername handling. Use a non-zero length session ID when attempting
8986 stateless session resumption: this makes it possible to determine if
8987 a resumption has occurred immediately after receiving server hello
8988 (several places in OpenSSL subtly assume this) instead of later in
8993 * The functions ENGINE_ctrl(), OPENSSL_isservice(),
8994 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
8995 fixes for a few places where the return code is not checked
8998 *Julia Lawall <julia@diku.dk>*
9000 * Add --strict-warnings option to Configure script to include devteam
9001 warnings in other configurations.
9005 * Add support for --libdir option and LIBDIR variable in makefiles. This
9006 makes it possible to install openssl libraries in locations which
9007 have names other than "lib", for example "/usr/lib64" which some
9010 *Steve Henson, based on patch from Jeremy Utley*
9012 * Don't allow the use of leading 0x80 in OIDs. This is a violation of
9013 X690 8.9.12 and can produce some misleading textual output of OIDs.
9015 *Steve Henson, reported by Dan Kaminsky*
9017 * Delete MD2 from algorithm tables. This follows the recommendation in
9018 several standards that it is not used in new applications due to
9019 several cryptographic weaknesses. For binary compatibility reasons
9020 the MD2 API is still compiled in by default.
9024 * Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
9029 * Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
9030 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
9033 *Guenter <lists@gknw.net>*
9035 * Fix the server certificate chain building code to use X509_verify_cert(),
9036 it used to have an ad-hoc builder which was unable to cope with anything
9037 other than a simple chain.
9039 *David Woodhouse <dwmw2@infradead.org>, Steve Henson*
9041 * Don't check self signed certificate signatures in X509_verify_cert()
9042 by default (a flag can override this): it just wastes time without
9043 adding any security. As a useful side effect self signed root CAs
9044 with non-FIPS digests are now usable in FIPS mode.
9048 * In dtls1_process_out_of_seq_message() the check if the current message
9049 is already buffered was missing. For every new message was memory
9050 allocated, allowing an attacker to perform an denial of service attack
9051 with sending out of seq handshake messages until there is no memory
9052 left. Additionally every future message was buffered, even if the
9053 sequence number made no sense and would be part of another handshake.
9054 So only messages with sequence numbers less than 10 in advance will be
9055 buffered. ([CVE-2009-1378])
9057 *Robin Seggelmann, discovered by Daniel Mentz*
9059 * Records are buffered if they arrive with a future epoch to be
9060 processed after finishing the corresponding handshake. There is
9061 currently no limitation to this buffer allowing an attacker to perform
9062 a DOS attack with sending records with future epochs until there is no
9063 memory left. This patch adds the pqueue_size() function to determine
9064 the size of a buffer and limits the record buffer to 100 entries.
9067 *Robin Seggelmann, discovered by Daniel Mentz*
9069 * Keep a copy of frag->msg_header.frag_len so it can be used after the
9070 parent structure is freed. ([CVE-2009-1379])
9074 * Handle non-blocking I/O properly in SSL_shutdown() call.
9076 *Darryl Miles <darryl-mailinglists@netbauds.net>*
9078 * Add `2.5.4.*` OIDs
9080 *Ilya O. <vrghost@gmail.com>*
9082 ### Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
9084 * Disable renegotiation completely - this fixes a severe security
9085 problem ([CVE-2009-3555]) at the cost of breaking all
9086 renegotiation. Renegotiation can be re-enabled by setting
9087 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
9088 run-time. This is really not recommended unless you know what
9093 ### Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
9095 * Don't set val to NULL when freeing up structures, it is freed up by
9096 underlying code. If `sizeof(void *) > sizeof(long)` this can result in
9097 zeroing past the valid field. ([CVE-2009-0789])
9099 *Paolo Ganci <Paolo.Ganci@AdNovum.CH>*
9101 * Fix bug where return value of CMS_SignerInfo_verify_content() was not
9102 checked correctly. This would allow some invalid signed attributes to
9103 appear to verify correctly. ([CVE-2009-0591])
9105 *Ivan Nestlerode <inestlerode@us.ibm.com>*
9107 * Reject UniversalString and BMPString types with invalid lengths. This
9108 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
9109 a legal length. ([CVE-2009-0590])
9113 * Set S/MIME signing as the default purpose rather than setting it
9114 unconditionally. This allows applications to override it at the store
9119 * Permit restricted recursion of ASN1 strings. This is needed in practice
9120 to handle some structures.
9124 * Improve efficiency of mem_gets: don't search whole buffer each time
9127 *Jeremy Shapiro <jnshapir@us.ibm.com>*
9129 * New -hex option for openssl rand.
9133 * Print out UTF8String and NumericString when parsing ASN1.
9137 * Support NumericString type for name components.
9141 * Allow CC in the environment to override the automatically chosen
9142 compiler. Note that nothing is done to ensure flags work with the
9147 ### Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
9149 * Properly check EVP_VerifyFinal() and similar return values
9152 *Ben Laurie, Bodo Moeller, Google Security Team*
9154 * Enable TLS extensions by default.
9158 * Allow the CHIL engine to be loaded, whether the application is
9159 multithreaded or not. (This does not release the developer from the
9160 obligation to set up the dynamic locking callbacks.)
9162 *Sander Temme <sander@temme.net>*
9164 * Use correct exit code if there is an error in dgst command.
9166 *Steve Henson; problem pointed out by Roland Dirlewanger*
9168 * Tweak Configure so that you need to say "experimental-jpake" to enable
9169 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
9173 * Add experimental JPAKE support, including demo authentication in
9174 s_client and s_server.
9178 * Set the comparison function in v3_addr_canonize().
9180 *Rob Austein <sra@hactrn.net>*
9182 * Add support for XMPP STARTTLS in s_client.
9184 *Philip Paeps <philip@freebsd.org>*
9186 * Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
9187 to ensure that even with this option, only ciphersuites in the
9188 server's preference list will be accepted. (Note that the option
9189 applies only when resuming a session, so the earlier behavior was
9190 just about the algorithm choice for symmetric cryptography.)
9194 ### Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
9196 * Fix NULL pointer dereference if a DTLS server received
9197 ChangeCipherSpec as first record ([CVE-2009-1386]).
9201 * Fix a state transition in s3_srvr.c and d1_srvr.c
9202 (was using SSL3_ST_CW_CLNT_HELLO_B, should be `..._ST_SW_SRVR_...`).
9206 * The fix in 0.9.8c that supposedly got rid of unsafe
9207 double-checked locking was incomplete for RSA blinding,
9208 addressing just one layer of what turns out to have been
9209 doubly unsafe triple-checked locking.
9211 So now fix this for real by retiring the MONT_HELPER macro
9212 in crypto/rsa/rsa_eay.c.
9214 *Bodo Moeller; problem pointed out by Marius Schilder*
9216 * Various precautionary measures:
9218 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
9220 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
9221 (NB: This would require knowledge of the secret session ticket key
9222 to exploit, in which case you'd be SOL either way.)
9224 - Change bn_nist.c so that it will properly handle input BIGNUMs
9225 outside the expected range.
9227 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
9230 *Neel Mehta, Bodo Moeller*
9232 * Allow engines to be "soft loaded" - i.e. optionally don't die if
9233 the load fails. Useful for distros.
9235 *Ben Laurie and the FreeBSD team*
9237 * Add support for Local Machine Keyset attribute in PKCS#12 files.
9241 * Fix BN_GF2m_mod_arr() top-bit cleanup code.
9245 * Expand ENGINE to support engine supplied SSL client certificate functions.
9247 This work was sponsored by Logica.
9251 * Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
9252 keystores. Support for SSL/TLS client authentication too.
9253 Not compiled unless enable-capieng specified to Configure.
9255 This work was sponsored by Logica.
9259 * Fix bug in X509_ATTRIBUTE creation: don't set attribute using
9260 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
9261 attribute creation routines such as certificate requests and PKCS#12
9266 ### Changes between 0.9.8g and 0.9.8h [28 May 2008]
9268 * Fix flaw if 'Server Key exchange message' is omitted from a TLS
9269 handshake which could lead to a client crash as found using the
9270 Codenomicon TLS test suite ([CVE-2008-1672])
9272 *Steve Henson, Mark Cox*
9274 * Fix double free in TLS server name extensions which could lead to
9275 a remote crash found by Codenomicon TLS test suite ([CVE-2008-0891])
9279 * Clear error queue in SSL_CTX_use_certificate_chain_file()
9281 Clear the error queue to ensure that error entries left from
9282 older function calls do not interfere with the correct operation.
9284 *Lutz Jaenicke, Erik de Castro Lopo*
9286 * Remove root CA certificates of commercial CAs:
9288 The OpenSSL project does not recommend any specific CA and does not
9289 have any policy with respect to including or excluding any CA.
9290 Therefore it does not make any sense to ship an arbitrary selection
9291 of root CA certificates with the OpenSSL software.
9295 * RSA OAEP patches to fix two separate invalid memory reads.
9296 The first one involves inputs when 'lzero' is greater than
9297 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
9298 before the beginning of from). The second one involves inputs where
9299 the 'db' section contains nothing but zeroes (there is a one-byte
9300 invalid read after the end of 'db').
9302 *Ivan Nestlerode <inestlerode@us.ibm.com>*
9304 * Partial backport from 0.9.9-dev:
9306 Introduce bn_mul_mont (dedicated Montgomery multiplication
9307 procedure) as a candidate for BIGNUM assembler implementation.
9308 While 0.9.9-dev uses assembler for various architectures, only
9309 x86_64 is available by default here in the 0.9.8 branch, and
9310 32-bit x86 is available through a compile-time setting.
9312 To try the 32-bit x86 assembler implementation, use Configure
9313 option "enable-montasm" (which exists only for this backport).
9315 As "enable-montasm" for 32-bit x86 disclaims code stability
9316 anyway, in this constellation we activate additional code
9317 backported from 0.9.9-dev for further performance improvements,
9318 namely BN_from_montgomery_word. (To enable this otherwise,
9319 e.g. x86_64, try `-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD`.)
9321 *Andy Polyakov (backport partially by Bodo Moeller)*
9323 * Add TLS session ticket callback. This allows an application to set
9324 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
9325 values. This is useful for key rollover for example where several key
9326 sets may exist with different names.
9330 * Reverse ENGINE-internal logic for caching default ENGINE handles.
9331 This was broken until now in 0.9.8 releases, such that the only way
9332 a registered ENGINE could be used (assuming it initialises
9333 successfully on the host) was to explicitly set it as the default
9334 for the relevant algorithms. This is in contradiction with 0.9.7
9335 behaviour and the documentation. With this fix, when an ENGINE is
9336 registered into a given algorithm's table of implementations, the
9337 'uptodate' flag is reset so that auto-discovery will be used next
9338 time a new context for that algorithm attempts to select an
9341 *Ian Lister (tweaked by Geoff Thorpe)*
9343 * Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
9344 implementation in the following ways:
9346 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
9349 Lack of BER streaming support means one pass streaming processing is
9350 only supported if data is detached: setting the streaming flag is
9351 ignored for embedded content.
9353 CMS support is disabled by default and must be explicitly enabled
9354 with the enable-cms configuration option.
9358 * Update the GMP engine glue to do direct copies between BIGNUM and
9359 mpz_t when openssl and GMP use the same limb size. Otherwise the
9360 existing "conversion via a text string export" trick is still used.
9362 *Paul Sheer <paulsheer@gmail.com>*
9364 * Zlib compression BIO. This is a filter BIO which compressed and
9365 uncompresses any data passed through it.
9369 * Add AES_wrap_key() and AES_unwrap_key() functions to implement
9370 RFC3394 compatible AES key wrapping.
9374 * Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
9375 sets string data without copying. X509_ALGOR_set0() and
9376 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
9377 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
9378 from an X509_ATTRIBUTE structure optionally checking it occurs only
9379 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
9384 * Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
9385 to get the expected BN_FLG_CONSTTIME behavior.
9387 *Bodo Moeller (Google)*
9391 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
9392 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
9393 - added some more tests to do_tests.pl
9394 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
9395 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
9396 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
9397 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
9398 - various changes to netware.pl to enable gcc-cross builds on Win32
9400 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
9401 - various changes to fix missing prototype warnings
9402 - fixed x86nasm.pl to create correct asm files for NASM COFF output
9403 - added AES, WHIRLPOOL and CPUID assembler code to build files
9404 - added missing AES assembler make rules to mk1mf.pl
9405 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
9407 *Guenter Knauf <eflash@gmx.net>*
9409 * Implement certificate status request TLS extension defined in RFC3546.
9410 A client can set the appropriate parameters and receive the encoded
9411 OCSP response via a callback. A server can query the supplied parameters
9412 and set the encoded OCSP response in the callback. Add simplified examples
9413 to s_client and s_server.
9417 ### Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
9420 + Binary incompatibility of ssl_ctx_st structure
9421 + DTLS interoperation with non-compliant servers
9422 + Don't call get_session_cb() without proposed session
9423 + Fix ia64 assembler code
9425 *Andy Polyakov, Steve Henson*
9427 ### Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
9429 * DTLS Handshake overhaul. There were longstanding issues with
9430 OpenSSL DTLS implementation, which were making it impossible for
9431 RFC 4347 compliant client to communicate with OpenSSL server.
9432 Unfortunately just fixing these incompatibilities would "cut off"
9433 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
9434 server keeps tolerating non RFC compliant syntax. The opposite is
9435 not true, 0.9.8f client can not communicate with earlier server.
9436 This update even addresses CVE-2007-4995.
9440 * Changes to avoid need for function casts in OpenSSL: some compilers
9441 (gcc 4.2 and later) reject their use.
9442 *Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
9445 * Add RFC4507 support to OpenSSL. This includes the corrections in
9446 RFC4507bis. The encrypted ticket format is an encrypted encoded
9447 SSL_SESSION structure, that way new session features are automatically
9450 If a client application caches session in an SSL_SESSION structure
9451 support is transparent because tickets are now stored in the encoded
9454 The SSL_CTX structure automatically generates keys for ticket
9455 protection in servers so again support should be possible
9456 with no application modification.
9458 If a client or server wishes to disable RFC4507 support then the option
9459 SSL_OP_NO_TICKET can be set.
9461 Add a TLS extension debugging callback to allow the contents of any client
9462 or server extensions to be examined.
9464 This work was sponsored by Google.
9468 * Add initial support for TLS extensions, specifically for the server_name
9469 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
9470 have new members for a host name. The SSL data structure has an
9471 additional member `SSL_CTX *initial_ctx` so that new sessions can be
9472 stored in that context to allow for session resumption, even after the
9473 SSL has been switched to a new SSL_CTX in reaction to a client's
9474 server_name extension.
9476 New functions (subject to change):
9478 SSL_get_servername()
9479 SSL_get_servername_type()
9482 New CTRL codes and macros (subject to change):
9484 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
9485 - SSL_CTX_set_tlsext_servername_callback()
9486 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
9487 - SSL_CTX_set_tlsext_servername_arg()
9488 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
9490 openssl s_client has a new '-servername ...' option.
9492 openssl s_server has new options '-servername_host ...', '-cert2 ...',
9493 '-key2 ...', '-servername_fatal' (subject to change). This allows
9494 testing the HostName extension for a specific single host name ('-cert'
9495 and '-key' remain fallbacks for handshakes without HostName
9496 negotiation). If the unrecognized_name alert has to be sent, this by
9497 default is a warning; it becomes fatal with the '-servername_fatal'
9500 *Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson*
9502 * Add AES and SSE2 assembly language support to VC++ build.
9506 * Mitigate attack on final subtraction in Montgomery reduction.
9510 * Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
9511 (which previously caused an internal error).
9515 * Squeeze another 10% out of IGE mode when in != out.
9519 * AES IGE mode speedup.
9521 *Dean Gaudet (Google)*
9523 * Add the Korean symmetric 128-bit cipher SEED (see
9524 <http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp>) and
9525 add SEED ciphersuites from RFC 4162:
9527 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
9528 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
9529 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
9530 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
9532 To minimize changes between patchlevels in the OpenSSL 0.9.8
9533 series, SEED remains excluded from compilation unless OpenSSL
9534 is configured with 'enable-seed'.
9536 *KISA, Bodo Moeller*
9538 * Mitigate branch prediction attacks, which can be practical if a
9539 single processor is shared, allowing a spy process to extract
9540 information. For detailed background information, see
9541 <http://eprint.iacr.org/2007/039> (O. Aciicmez, S. Gueron,
9542 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
9543 and Necessary Software Countermeasures"). The core of the change
9544 are new versions BN_div_no_branch() and
9545 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
9546 respectively, which are slower, but avoid the security-relevant
9547 conditional branches. These are automatically called by BN_div()
9548 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
9549 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
9550 remove a conditional branch.
9552 BN_FLG_CONSTTIME is the new name for the previous
9553 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
9554 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
9555 in the exponent causes BN_mod_exp_mont() to use the alternative
9556 implementation in BN_mod_exp_mont_consttime().) The old name
9557 remains as a deprecated alias.
9559 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
9560 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
9561 constant-time implementations for more than just exponentiation.
9562 Here too the old name is kept as a deprecated alias.
9564 BN_BLINDING_new() will now use BN_dup() for the modulus so that
9565 the BN_BLINDING structure gets an independent copy of the
9566 modulus. This means that the previous `BIGNUM *m` argument to
9567 BN_BLINDING_new() and to BN_BLINDING_create_param() now
9568 essentially becomes `const BIGNUM *m`, although we can't actually
9569 change this in the header file before 0.9.9. It allows
9570 RSA_setup_blinding() to use BN_with_flags() on the modulus to
9571 enable BN_FLG_CONSTTIME.
9573 *Matthew D Wood (Intel Corp)*
9575 * In the SSL/TLS server implementation, be strict about session ID
9576 context matching (which matters if an application uses a single
9577 external cache for different purposes). Previously,
9578 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
9579 set. This did ensure strict client verification, but meant that,
9580 with applications using a single external cache for quite
9581 different requirements, clients could circumvent ciphersuite
9582 restrictions for a given session ID context by starting a session
9583 in a different context.
9587 * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
9588 a ciphersuite string such as "DEFAULT:RSA" cannot enable
9589 authentication-only ciphersuites.
9593 * Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
9594 not complete and could lead to a possible single byte overflow
9595 ([CVE-2007-5135]) [Ben Laurie]
9597 ### Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
9599 * Since AES128 and AES256 (and similarly Camellia128 and
9600 Camellia256) share a single mask bit in the logic of
9601 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
9602 kludge to work properly if AES128 is available and AES256 isn't
9603 (or if Camellia128 is available and Camellia256 isn't).
9607 * Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
9608 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
9609 When a point or a seed is encoded in a BIT STRING, we need to
9610 prevent the removal of trailing zero bits to get the proper DER
9611 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
9612 of a NamedBitList, for which trailing 0 bits need to be removed.)
9616 * Have SSL/TLS server implementation tolerate "mismatched" record
9617 protocol version while receiving ClientHello even if the
9618 ClientHello is fragmented. (The server can't insist on the
9619 particular protocol version it has chosen before the ServerHello
9620 message has informed the client about his choice.)
9624 * Add RFC 3779 support.
9626 *Rob Austein for ARIN, Ben Laurie*
9628 * Load error codes if they are not already present instead of using a
9629 static variable. This allows them to be cleanly unloaded and reloaded.
9630 Improve header file function name parsing.
9634 * extend SMTP and IMAP protocol emulation in s_client to use EHLO
9635 or CAPABILITY handshake as required by RFCs.
9639 ### Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
9641 * Introduce limits to prevent malicious keys being able to
9642 cause a denial of service. ([CVE-2006-2940])
9644 *Steve Henson, Bodo Moeller*
9646 * Fix ASN.1 parsing of certain invalid structures that can result
9647 in a denial of service. ([CVE-2006-2937]) [Steve Henson]
9649 * Fix buffer overflow in SSL_get_shared_ciphers() function.
9650 ([CVE-2006-3738]) [Tavis Ormandy and Will Drewry, Google Security Team]
9652 * Fix SSL client code which could crash if connecting to a
9653 malicious SSLv2 server. ([CVE-2006-4343])
9655 *Tavis Ormandy and Will Drewry, Google Security Team*
9657 * Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
9658 match only those. Before that, "AES256-SHA" would be interpreted
9659 as a pattern and match "AES128-SHA" too (since AES128-SHA got
9660 the same strength classification in 0.9.7h) as we currently only
9661 have a single AES bit in the ciphersuite description bitmap.
9662 That change, however, also applied to ciphersuite strings such as
9663 "RC4-MD5" that intentionally matched multiple ciphersuites --
9664 namely, SSL 2.0 ciphersuites in addition to the more common ones
9665 from SSL 3.0/TLS 1.0.
9667 So we change the selection algorithm again: Naming an explicit
9668 ciphersuite selects this one ciphersuite, and any other similar
9669 ciphersuite (same bitmap) from *other* protocol versions.
9670 Thus, "RC4-MD5" again will properly select both the SSL 2.0
9671 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
9673 Since SSL 2.0 does not have any ciphersuites for which the
9674 128/256 bit distinction would be relevant, this works for now.
9675 The proper fix will be to use different bits for AES128 and
9676 AES256, which would have avoided the problems from the beginning;
9677 however, bits are scarce, so we can only do this in a new release
9678 (not just a patchlevel) when we can change the SSL_CIPHER
9679 definition to split the single 'unsigned long mask' bitmap into
9680 multiple values to extend the available space.
9684 ### Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
9686 * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
9687 ([CVE-2006-4339]) [Ben Laurie and Google Security Team]
9689 * Add AES IGE and biIGE modes.
9693 * Change the Unix randomness entropy gathering to use poll() when
9694 possible instead of select(), since the latter has some
9695 undesirable limitations.
9697 *Darryl Miles via Richard Levitte and Bodo Moeller*
9699 * Disable "ECCdraft" ciphersuites more thoroughly. Now special
9700 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
9701 cannot be implicitly activated as part of, e.g., the "AES" alias.
9702 However, please upgrade to OpenSSL 0.9.9[-dev] for
9703 non-experimental use of the ECC ciphersuites to get TLS extension
9704 support, which is required for curve and point format negotiation
9705 to avoid potential handshake problems.
9709 * Disable rogue ciphersuites:
9711 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
9712 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
9713 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
9715 The latter two were purportedly from
9716 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
9719 Also deactivate the remaining ciphersuites from
9720 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
9721 unofficial, and the ID has long expired.
9725 * Fix RSA blinding Heisenbug (problems sometimes occurred on
9726 dual-core machines) and other potential thread-safety issues.
9730 * Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
9731 versions), which is now available for royalty-free use
9732 (see <http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html>).
9733 Also, add Camellia TLS ciphersuites from RFC 4132.
9735 To minimize changes between patchlevels in the OpenSSL 0.9.8
9736 series, Camellia remains excluded from compilation unless OpenSSL
9737 is configured with 'enable-camellia'.
9741 * Disable the padding bug check when compression is in use. The padding
9742 bug check assumes the first packet is of even length, this is not
9743 necessarily true if compression is enabled and can result in false
9744 positives causing handshake failure. The actual bug test is ancient
9745 code so it is hoped that implementations will either have fixed it by
9746 now or any which still have the bug do not support compression.
9750 ### Changes between 0.9.8a and 0.9.8b [04 May 2006]
9752 * When applying a cipher rule check to see if string match is an explicit
9753 cipher suite and only match that one cipher suite if it is.
9757 * Link in manifests for VC++ if needed.
9759 *Austin Ziegler <halostatue@gmail.com>*
9761 * Update support for ECC-based TLS ciphersuites according to
9762 draft-ietf-tls-ecc-12.txt with proposed changes (but without
9763 TLS extensions, which are supported starting with the 0.9.9
9764 branch, not in the OpenSSL 0.9.8 branch).
9768 * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
9769 opaque EVP_CIPHER_CTX handling.
9773 * Fixes and enhancements to zlib compression code. We now only use
9774 "zlib1.dll" and use the default `__cdecl` calling convention on Win32
9775 to conform with the standards mentioned here:
9776 <http://www.zlib.net/DLL_FAQ.txt>
9777 Static zlib linking now works on Windows and the new --with-zlib-include
9778 --with-zlib-lib options to Configure can be used to supply the location
9779 of the headers and library. Gracefully handle case where zlib library
9784 * Several fixes and enhancements to the OID generation code. The old code
9785 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
9786 handle numbers larger than ULONG_MAX, truncated printing and had a
9787 non standard OBJ_obj2txt() behaviour.
9791 * Add support for building of engines under engine/ as shared libraries
9792 under VC++ build system.
9796 * Corrected the numerous bugs in the Win32 path splitter in DSO.
9797 Hopefully, we will not see any false combination of paths any more.
9801 ### Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
9803 * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
9804 (part of SSL_OP_ALL). This option used to disable the
9805 countermeasure against man-in-the-middle protocol-version
9806 rollback in the SSL 2.0 server implementation, which is a bad
9807 idea. ([CVE-2005-2969])
9809 *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
9810 for Information Security, National Institute of Advanced Industrial
9811 Science and Technology [AIST], Japan)*
9813 * Add two function to clear and return the verify parameter flags.
9817 * Keep cipherlists sorted in the source instead of sorting them at
9818 runtime, thus removing the need for a lock.
9822 * Avoid some small subgroup attacks in Diffie-Hellman.
9824 *Nick Mathewson and Ben Laurie*
9826 * Add functions for well-known primes.
9830 * Extended Windows CE support.
9832 *Satoshi Nakamura and Andy Polyakov*
9834 * Initialize SSL_METHOD structures at compile time instead of during
9835 runtime, thus removing the need for a lock.
9839 * Make PKCS7_decrypt() work even if no certificate is supplied by
9840 attempting to decrypt each encrypted key in turn. Add support to
9845 ### Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
9847 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
9850 * Add libcrypto.pc and libssl.pc for those who feel they need them.
9854 * Change CA.sh and CA.pl so they don't bundle the CSR and the private
9855 key into the same file any more.
9859 * Add initial support for Win64, both IA64 and AMD64/x64 flavors.
9863 * Add -utf8 command line and config file option to 'ca'.
9865 *Stefan <stf@udoma.org*
9867 * Removed the macro des_crypt(), as it seems to conflict with some
9868 libraries. Use DES_crypt().
9872 * Correct naming of the 'chil' and '4758cca' ENGINEs. This
9873 involves renaming the source and generated shared-libs for
9874 both. The engines will accept the corrected or legacy ids
9875 ('ncipher' and '4758_cca' respectively) when binding. NB,
9876 this only applies when building 'shared'.
9878 *Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe*
9880 * Add attribute functions to EVP_PKEY structure. Modify
9881 PKCS12_create() to recognize a CSP name attribute and
9882 use it. Make -CSP option work again in pkcs12 utility.
9886 * Add new functionality to the bn blinding code:
9887 - automatic re-creation of the BN_BLINDING parameters after
9888 a fixed number of uses (currently 32)
9889 - add new function for parameter creation
9890 - introduce flags to control the update behaviour of the
9891 BN_BLINDING parameters
9892 - hide BN_BLINDING structure
9893 Add a second BN_BLINDING slot to the RSA structure to improve
9894 performance when a single RSA object is shared among several
9899 * Add support for DTLS.
9901 *Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie*
9903 * Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
9904 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
9908 * Remove buggy and incomplete DH cert support from
9909 ssl/ssl_rsa.c and ssl/s3_both.c
9913 * Use SHA-1 instead of MD5 as the default digest algorithm for
9914 the apps/openssl applications.
9918 * Compile clean with "-Wall -Wmissing-prototypes
9919 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
9920 DEBUG_SAFESTACK must also be set.
9924 * Change ./Configure so that certain algorithms can be disabled by default.
9925 The new counterpiece to "no-xxx" is "enable-xxx".
9927 The patented RC5 and MDC2 algorithms will now be disabled unless
9928 "enable-rc5" and "enable-mdc2", respectively, are specified.
9930 (IDEA remains enabled despite being patented. This is because IDEA
9931 is frequently required for interoperability, and there is no license
9932 fee for non-commercial use. As before, "no-idea" can be used to
9933 avoid this algorithm.)
9937 * Add processing of proxy certificates (see RFC 3820). This work was
9938 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
9939 EGEE (Enabling Grids for E-science in Europe).
9943 * RC4 performance overhaul on modern architectures/implementations, such
9944 as Intel P4, IA-64 and AMD64.
9948 * New utility extract-section.pl. This can be used specify an alternative
9949 section number in a pod file instead of having to treat each file as
9950 a separate case in Makefile. This can be done by adding two lines to the
9953 =for comment openssl_section:XXX
9955 The blank line is mandatory.
9959 * New arguments -certform, -keyform and -pass for s_client and s_server
9960 to allow alternative format key and certificate files and passphrase
9965 * New structure X509_VERIFY_PARAM which combines current verify parameters,
9966 update associated structures and add various utility functions.
9968 Add new policy related verify parameters, include policy checking in
9969 standard verify code. Enhance 'smime' application with extra parameters
9970 to support policy checking and print out.
9974 * Add a new engine to support VIA PadLock ACE extensions in the VIA C3
9975 Nehemiah processors. These extensions support AES encryption in hardware
9976 as well as RNG (though RNG support is currently disabled).
9978 *Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov*
9980 * Deprecate `BN_[get|set]_params()` functions (they were ignored internally).
9984 * New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
9986 *Andy Polyakov and a number of other people*
9988 * Improved PowerPC platform support. Most notably BIGNUM assembler
9989 implementation contributed by IBM.
9991 *Suresh Chari, Peter Waltenberg, Andy Polyakov*
9993 * The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
9994 exponent rather than 'unsigned long'. There is a corresponding change to
9995 the new 'rsa_keygen' element of the RSA_METHOD structure.
9997 *Jelte Jansen, Geoff Thorpe*
9999 * Functionality for creating the initial serial number file is now
10000 moved from CA.pl to the 'ca' utility with a new option -create_serial.
10002 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
10003 number file to 1, which is bound to cause problems. To avoid
10004 the problems while respecting compatibility between different 0.9.7
10005 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
10006 CA.pl for serial number initialization. With the new release 0.9.8,
10007 we can fix the problem directly in the 'ca' utility.)
10011 * Reduced header interdependencies by declaring more opaque objects in
10012 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
10013 give fewer recursive includes, which could break lazy source code - so
10014 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
10015 developers should define this symbol when building and using openssl to
10016 ensure they track the recommended behaviour, interfaces, [etc], but
10017 backwards-compatible behaviour prevails when this isn't defined.
10021 * New function X509_POLICY_NODE_print() which prints out policy nodes.
10025 * Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
10026 This will generate a random key of the appropriate length based on the
10027 cipher context. The EVP_CIPHER can provide its own random key generation
10028 routine to support keys of a specific form. This is used in the des and
10029 3des routines to generate a key of the correct parity. Update S/MIME
10030 code to use new functions and hence generate correct parity DES keys.
10031 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
10032 valid (weak or incorrect parity).
10036 * Add a local set of CRLs that can be used by X509_verify_cert() as well
10037 as looking them up. This is useful when the verified structure may contain
10038 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
10039 present unless the new PKCS7_NO_CRL flag is asserted.
10043 * Extend ASN1 oid configuration module. It now additionally accepts the
10046 shortName = some long name, 1.2.3.4
10050 * Reimplemented the BN_CTX implementation. There is now no more static
10051 limitation on the number of variables it can handle nor the depth of the
10052 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
10053 information can now expand as required, and rather than having a single
10054 static array of bignums, BN_CTX now uses a linked-list of such arrays
10055 allowing it to expand on demand whilst maintaining the usefulness of
10056 BN_CTX's "bundling".
10060 * Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
10061 to allow all RSA operations to function using a single BN_CTX.
10065 * Preliminary support for certificate policy evaluation and checking. This
10066 is initially intended to pass the tests outlined in "Conformance Testing
10067 of Relying Party Client Certificate Path Processing Logic" v1.07.
10071 * bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
10072 remained unused and not that useful. A variety of other little bignum
10073 tweaks and fixes have also been made continuing on from the audit (see
10078 * Constify all or almost all d2i, c2i, s2i and r2i functions, along with
10079 associated ASN1, EVP and SSL functions and old ASN1 macros.
10083 * BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
10084 and this should never fail. So the return value from the use of
10085 BN_set_word() (which can fail due to needless expansion) is now deprecated;
10086 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
10090 * BN_CTX_get() should return zero-valued bignums, providing the same
10091 initialised value as BN_new().
10093 *Geoff Thorpe, suggested by Ulf Möller*
10095 * Support for inhibitAnyPolicy certificate extension.
10099 * An audit of the BIGNUM code is underway, for which debugging code is
10100 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
10101 is considered valid when processing BIGNUMs, and causes execution to
10102 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
10103 further steps are taken to deliberately pollute unused data in BIGNUM
10104 structures to try and expose faulty code further on. For now, openssl will
10105 (in its default mode of operation) continue to tolerate the inconsistent
10106 forms that it has tolerated in the past, but authors and packagers should
10107 consider trying openssl and their own applications when compiled with
10108 these debugging symbols defined. It will help highlight potential bugs in
10109 their own code, and will improve the test coverage for OpenSSL itself. At
10110 some point, these tighter rules will become openssl's default to improve
10111 maintainability, though the assert()s and other overheads will remain only
10112 in debugging configurations. See bn.h for more details.
10114 *Geoff Thorpe, Nils Larsch, Ulf Möller*
10116 * BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
10117 that can only be obtained through BN_CTX_new() (which implicitly
10118 initialises it). The presence of this function only made it possible
10119 to overwrite an existing structure (and cause memory leaks).
10123 * Because of the callback-based approach for implementing LHASH as a
10124 template type, lh_insert() adds opaque objects to hash-tables and
10125 lh_doall() or lh_doall_arg() are typically used with a destructor callback
10126 to clean up those corresponding objects before destroying the hash table
10127 (and losing the object pointers). So some over-zealous constifications in
10128 LHASH have been relaxed so that lh_insert() does not take (nor store) the
10129 objects as "const" and the `lh_doall[_arg]` callback wrappers are not
10130 prototyped to have "const" restrictions on the object pointers they are
10131 given (and so aren't required to cast them away any more).
10135 * The tmdiff.h API was so ugly and minimal that our own timing utility
10136 (speed) prefers to use its own implementation. The two implementations
10137 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
10138 its object type properly exposed (MS_TM) instead of casting to/from
10139 `char *`. This may still change yet if someone realises MS_TM and
10141 aren't necessarily the greatest nomenclatures - but this is what was used
10142 internally to the implementation so I've used that for now.
10146 * Ensure that deprecated functions do not get compiled when
10147 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
10148 the self-tests were still using deprecated key-generation functions so
10149 these have been updated also.
10153 * Reorganise PKCS#7 code to separate the digest location functionality
10154 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
10155 New function PKCS7_set_digest() to set the digest type for PKCS#7
10156 digestedData type. Add additional code to correctly generate the
10157 digestedData type and add support for this type in PKCS7 initialization
10162 * New function PKCS7_set0_type_other() this initializes a PKCS7
10163 structure of type "other".
10167 * Fix prime generation loop in crypto/bn/bn_prime.pl by making
10168 sure the loop does correctly stop and breaking ("division by zero")
10169 modulus operations are not performed. The (pre-generated) prime
10170 table crypto/bn/bn_prime.h was already correct, but it could not be
10171 re-generated on some platforms because of the "division by zero"
10172 situation in the script.
10174 *Ralf S. Engelschall*
10176 * Update support for ECC-based TLS ciphersuites according to
10177 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
10178 SHA-1 now is only used for "small" curves (where the
10179 representation of a field element takes up to 24 bytes); for
10180 larger curves, the field element resulting from ECDH is directly
10181 used as premaster secret.
10183 *Douglas Stebila (Sun Microsystems Laboratories)*
10185 * Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
10186 curve secp160r1 to the tests.
10188 *Douglas Stebila (Sun Microsystems Laboratories)*
10190 * Add the possibility to load symbols globally with DSO.
10192 *Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte*
10194 * Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
10195 control of the error stack.
10199 * Add support for STORE in ENGINE.
10203 * Add the STORE type. The intention is to provide a common interface
10204 to certificate and key stores, be they simple file-based stores, or
10205 HSM-type store, or LDAP stores, or...
10206 NOTE: The code is currently UNTESTED and isn't really used anywhere.
10210 * Add a generic structure called OPENSSL_ITEM. This can be used to
10211 pass a list of arguments to any function as well as provide a way
10212 for a function to pass data back to the caller.
10216 * Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
10217 works like BUF_strdup() but can be used to duplicate a portion of
10218 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
10223 * Add the function sk_find_ex() which works like sk_find(), but will
10224 return an index to an element even if an exact match couldn't be
10225 found. The index is guaranteed to point at the element where the
10226 searched-for key would be inserted to preserve sorting order.
10230 * Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
10231 takes an extra flags argument for optional functionality. Currently,
10232 the following flags are defined:
10234 OBJ_BSEARCH_VALUE_ON_NOMATCH
10235 This one gets OBJ_bsearch_ex() to return a pointer to the first
10236 element where the comparing function returns a negative or zero
10239 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
10240 This one gets OBJ_bsearch_ex() to return a pointer to the first
10241 element where the comparing function returns zero. This is useful
10242 if there are more than one element where the comparing function
10247 * Make it possible to create self-signed certificates with 'openssl ca'
10248 in such a way that the self-signed certificate becomes part of the
10249 CA database and uses the same mechanisms for serial number generation
10250 as all other certificate signing. The new flag '-selfsign' enables
10251 this functionality. Adapt CA.sh and CA.pl.in.
10255 * Add functionality to check the public key of a certificate request
10256 against a given private. This is useful to check that a certificate
10257 request can be signed by that key (self-signing).
10261 * Make it possible to have multiple active certificates with the same
10262 subject in the CA index file. This is done only if the keyword
10263 'unique_subject' is set to 'no' in the main CA section (default
10264 if 'CA_default') of the configuration file. The value is saved
10265 with the database itself in a separate index attribute file,
10266 named like the index file with '.attr' appended to the name.
10270 * Generate multi-valued AVAs using '+' notation in config files for
10275 * Support for nameConstraints certificate extension.
10279 * Support for policyConstraints certificate extension.
10283 * Support for policyMappings certificate extension.
10287 * Make sure the default DSA_METHOD implementation only uses its
10288 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
10289 and change its own handlers to be NULL so as to remove unnecessary
10290 indirection. This lets alternative implementations fallback to the
10291 default implementation more easily.
10295 * Support for directoryName in GeneralName related extensions
10300 * Make it possible to link applications using Makefile.shared.
10301 Make that possible even when linking against static libraries!
10305 * Support for single pass processing for S/MIME signing. This now
10306 means that S/MIME signing can be done from a pipe, in addition
10307 cleartext signing (multipart/signed type) is effectively streaming
10308 and the signed data does not need to be all held in memory.
10310 This is done with a new flag PKCS7_STREAM. When this flag is set
10311 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
10312 is done after the data is output (and digests calculated) in
10313 SMIME_write_PKCS7().
10317 * Add full support for -rpath/-R, both in shared libraries and
10318 applications, at least on the platforms where it's known how
10323 * In crypto/ec/ec_mult.c, implement fast point multiplication with
10324 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
10325 will now compute a table of multiples of the generator that
10326 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
10327 faster (notably in the case of a single point multiplication,
10328 scalar * generator).
10330 *Nils Larsch, Bodo Moeller*
10332 * IPv6 support for certificate extensions. The various extensions
10333 which use the IP:a.b.c.d can now take IPv6 addresses using the
10334 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
10339 * Added an ENGINE that implements RSA by performing private key
10340 exponentiations with the GMP library. The conversions to and from
10341 GMP's mpz_t format aren't optimised nor are any montgomery forms
10342 cached, and on x86 it appears OpenSSL's own performance has caught up.
10343 However there are likely to be other architectures where GMP could
10344 provide a boost. This ENGINE is not built in by default, but it can be
10345 specified at Configure time and should be accompanied by the necessary
10346 linker additions, eg;
10347 ./config -DOPENSSL_USE_GMP -lgmp
10351 * "openssl engine" will not display ENGINE/DSO load failure errors when
10352 testing availability of engines with "-t" - the old behaviour is
10353 produced by increasing the feature's verbosity with "-tt".
10357 * ECDSA routines: under certain error conditions uninitialized BN objects
10358 could be freed. Solution: make sure initialization is performed early
10359 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
10364 * Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
10365 and DH_METHOD (eg. by ENGINE implementations) to override the normal
10366 software implementations. For DSA and DH, parameter generation can
10367 also be overridden by providing the appropriate method callbacks.
10371 * Change the "progress" mechanism used in key-generation and
10372 primality testing to functions that take a new BN_GENCB pointer in
10373 place of callback/argument pairs. The new API functions have `_ex`
10374 postfixes and the older functions are reimplemented as wrappers for
10375 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
10376 declarations of the old functions to help (graceful) attempts to
10377 migrate to the new functions. Also, the new key-generation API
10378 functions operate on a caller-supplied key-structure and return
10379 success/failure rather than returning a key or NULL - this is to
10380 help make "keygen" another member function of RSA_METHOD etc.
10382 Example for using the new callback interface:
10384 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
10385 void *my_arg = ...;
10388 BN_GENCB_set(&my_cb, my_callback, my_arg);
10390 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
10391 /* For the meaning of a, b in calls to my_callback(), see the
10392 * documentation of the function that calls the callback.
10393 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
10394 * my_callback should return 1 if it wants BN_is_prime_ex()
10395 * to continue, or 0 to stop.
10400 * Change the ZLIB compression method to be stateful, and make it
10401 available to TLS with the number defined in
10402 draft-ietf-tls-compression-04.txt.
10406 * Add the ASN.1 structures and functions for CertificatePair, which
10407 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
10409 CertificatePair ::= SEQUENCE {
10410 forward [0] Certificate OPTIONAL,
10411 reverse [1] Certificate OPTIONAL,
10412 -- at least one of the pair shall be present -- }
10414 Also implement the PEM functions to read and write certificate
10415 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
10417 This needed to be defined, mostly for the sake of the LDAP
10418 attribute crossCertificatePair, but may prove useful elsewhere as
10423 * Make it possible to inhibit symlinking of shared libraries in
10424 Makefile.shared, for Cygwin's sake.
10428 * Extend the BIGNUM API by creating a function
10429 void BN_set_negative(BIGNUM *a, int neg);
10430 and a macro that behave like
10431 int BN_is_negative(const BIGNUM *a);
10433 to avoid the need to access 'a->neg' directly in applications.
10437 * Implement fast modular reduction for pseudo-Mersenne primes
10438 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
10439 EC_GROUP_new_curve_GFp() will now automatically use this
10442 *Nils Larsch <nla@trustcenter.de>*
10444 * Add new lock type (CRYPTO_LOCK_BN).
10448 * Change the ENGINE framework to automatically load engines
10449 dynamically from specific directories unless they could be
10450 found to already be built in or loaded. Move all the
10451 current engines except for the cryptodev one to a new
10452 directory engines/.
10453 The engines in engines/ are built as shared libraries if
10454 the "shared" options was given to ./Configure or ./config.
10455 Otherwise, they are inserted in libcrypto.a.
10456 /usr/local/ssl/engines is the default directory for dynamic
10457 engines, but that can be overridden at configure time through
10458 the usual use of --prefix and/or --openssldir, and at run
10459 time with the environment variable OPENSSL_ENGINES.
10461 *Geoff Thorpe and Richard Levitte*
10463 * Add Makefile.shared, a helper makefile to build shared
10464 libraries. Adapt Makefile.org.
10468 * Add version info to Win32 DLLs.
10470 *Peter 'Luna' Runestig" <peter@runestig.com>*
10472 * Add new 'medium level' PKCS#12 API. Certificates and keys
10473 can be added using this API to created arbitrary PKCS#12
10474 files while avoiding the low level API.
10476 New options to PKCS12_create(), key or cert can be NULL and
10477 will then be omitted from the output file. The encryption
10478 algorithm NIDs can be set to -1 for no encryption, the mac
10479 iteration count can be set to 0 to omit the mac.
10481 Enhance pkcs12 utility by making the -nokeys and -nocerts
10482 options work when creating a PKCS#12 file. New option -nomac
10483 to omit the mac, NONE can be set for an encryption algorithm.
10484 New code is modified to use the enhanced PKCS12_create()
10485 instead of the low level API.
10489 * Extend ASN1 encoder to support indefinite length constructed
10490 encoding. This can output sequences tags and octet strings in
10491 this form. Modify pk7_asn1.c to support indefinite length
10492 encoding. This is experimental and needs additional code to
10493 be useful, such as an ASN1 bio and some enhanced streaming
10496 Extend template encode functionality so that tagging is passed
10497 down to the template encoder.
10501 * Let 'openssl req' fail if an argument to '-newkey' is not
10502 recognized instead of using RSA as a default.
10506 * Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
10507 As these are not official, they are not included in "ALL";
10508 the "ECCdraft" ciphersuite group alias can be used to select them.
10510 *Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)*
10512 * Add ECDH engine support.
10514 *Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)*
10516 * Add ECDH in new directory crypto/ecdh/.
10518 *Douglas Stebila (Sun Microsystems Laboratories)*
10520 * Let BN_rand_range() abort with an error after 100 iterations
10521 without success (which indicates a broken PRNG).
10525 * Change BN_mod_sqrt() so that it verifies that the input value
10526 is really the square of the return value. (Previously,
10527 BN_mod_sqrt would show GIGO behaviour.)
10531 * Add named elliptic curves over binary fields from X9.62, SECG,
10532 and WAP/WTLS; add OIDs that were still missing.
10534 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10536 * Extend the EC library for elliptic curves over binary fields
10537 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
10540 EC_GF2m_simple_method
10544 EC_GROUP_new_curve_GF2m
10545 EC_GROUP_set_curve_GF2m
10546 EC_GROUP_get_curve_GF2m
10547 EC_POINT_set_affine_coordinates_GF2m
10548 EC_POINT_get_affine_coordinates_GF2m
10549 EC_POINT_set_compressed_coordinates_GF2m
10551 Point compression for binary fields is disabled by default for
10552 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
10555 As binary polynomials are represented as BIGNUMs, various members
10556 of the EC_GROUP and EC_POINT data structures can be shared
10557 between the implementations for prime fields and binary fields;
10558 the above `..._GF2m functions` (except for EX_GROUP_new_curve_GF2m)
10559 are essentially identical to their `..._GFp` counterparts.
10560 (For simplicity, the `..._GFp` prefix has been dropped from
10561 various internal method names.)
10563 An internal 'field_div' method (similar to 'field_mul' and
10564 'field_sqr') has been added; this is used only for binary fields.
10566 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10568 * Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
10569 through methods ('mul', 'precompute_mult').
10571 The generic implementations (now internally called 'ec_wNAF_mul'
10572 and 'ec_wNAF_precomputed_mult') remain the default if these
10573 methods are undefined.
10575 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10577 * New function EC_GROUP_get_degree, which is defined through
10578 EC_METHOD. For curves over prime fields, this returns the bit
10579 length of the modulus.
10581 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10583 * New functions EC_GROUP_dup, EC_POINT_dup.
10584 (These simply call ..._new and ..._copy).
10586 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10588 * Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
10589 Polynomials are represented as BIGNUMs (where the sign bit is not
10590 used) in the following functions [macros]:
10593 BN_GF2m_sub [= BN_GF2m_add]
10594 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
10595 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
10596 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
10598 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
10599 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
10600 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
10601 BN_GF2m_cmp [= BN_ucmp]
10603 (Note that only the 'mod' functions are actually for fields GF(2^m).
10604 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
10606 For some functions, an the irreducible polynomial defining a
10607 field can be given as an 'unsigned int[]' with strictly
10608 decreasing elements giving the indices of those bits that are set;
10609 i.e., p[] represents the polynomial
10610 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
10612 p[0] > p[1] > ... > p[k] = 0.
10613 This applies to the following functions:
10616 BN_GF2m_mod_mul_arr
10617 BN_GF2m_mod_sqr_arr
10618 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
10619 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
10620 BN_GF2m_mod_exp_arr
10621 BN_GF2m_mod_sqrt_arr
10622 BN_GF2m_mod_solve_quad_arr
10626 Conversion can be performed by the following functions:
10631 bntest.c has additional tests for binary polynomial arithmetic.
10633 Two implementations for BN_GF2m_mod_div() are available.
10634 The default algorithm simply uses BN_GF2m_mod_inv() and
10635 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
10636 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
10637 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
10639 *Sheueling Chang Shantz and Douglas Stebila (Sun Microsystems Laboratories)*
10641 * Add new error code 'ERR_R_DISABLED' that can be used when some
10642 functionality is disabled at compile-time.
10644 *Douglas Stebila <douglas.stebila@sun.com>*
10646 * Change default behaviour of 'openssl asn1parse' so that more
10647 information is visible when viewing, e.g., a certificate:
10649 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
10650 mode the content of non-printable OCTET STRINGs is output in a
10651 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
10652 avoid the appearance of a printable string.
10654 *Nils Larsch <nla@trustcenter.de>*
10656 * Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
10658 EC_GROUP_set_asn1_flag()
10659 EC_GROUP_get_asn1_flag()
10660 EC_GROUP_set_point_conversion_form()
10661 EC_GROUP_get_point_conversion_form()
10662 These control ASN1 encoding details:
10663 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
10664 has been set to OPENSSL_EC_NAMED_CURVE.
10665 - Points are encoded in uncompressed form by default; options for
10666 asn1_for are as for point2oct, namely
10667 POINT_CONVERSION_COMPRESSED
10668 POINT_CONVERSION_UNCOMPRESSED
10669 POINT_CONVERSION_HYBRID
10671 Also add 'seed' and 'seed_len' members to EC_GROUP with access
10673 EC_GROUP_set_seed()
10674 EC_GROUP_get0_seed()
10675 EC_GROUP_get_seed_len()
10676 This is used only for ASN1 purposes (so far).
10678 *Nils Larsch <nla@trustcenter.de>*
10680 * Add 'field_type' member to EC_METHOD, which holds the NID
10681 of the appropriate field type OID. The new function
10682 EC_METHOD_get_field_type() returns this value.
10684 *Nils Larsch <nla@trustcenter.de>*
10687 EC_POINT_point2bn()
10688 EC_POINT_bn2point()
10689 EC_POINT_point2hex()
10690 EC_POINT_hex2point()
10691 providing useful interfaces to EC_POINT_point2oct() and
10692 EC_POINT_oct2point().
10694 *Nils Larsch <nla@trustcenter.de>*
10696 * Change internals of the EC library so that the functions
10697 EC_GROUP_set_generator()
10698 EC_GROUP_get_generator()
10699 EC_GROUP_get_order()
10700 EC_GROUP_get_cofactor()
10701 are implemented directly in crypto/ec/ec_lib.c and not dispatched
10702 to methods, which would lead to unnecessary code duplication when
10703 adding different types of curves.
10705 *Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller*
10707 * Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
10708 arithmetic, and such that modified wNAFs are generated
10709 (which avoid length expansion in many cases).
10713 * Add a function EC_GROUP_check_discriminant() (defined via
10714 EC_METHOD) that verifies that the curve discriminant is non-zero.
10716 Add a function EC_GROUP_check() that makes some sanity tests
10717 on a EC_GROUP, its generator and order. This includes
10718 EC_GROUP_check_discriminant().
10720 *Nils Larsch <nla@trustcenter.de>*
10722 * Add ECDSA in new directory crypto/ecdsa/.
10724 Add applications 'openssl ecparam' and 'openssl ecdsa'
10725 (these are based on 'openssl dsaparam' and 'openssl dsa').
10727 ECDSA support is also included in various other files across the
10728 library. Most notably,
10729 - 'openssl req' now has a '-newkey ecdsa:file' option;
10730 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
10731 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
10732 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
10733 them suitable for ECDSA where domain parameters must be
10734 extracted before the specific public key;
10735 - ECDSA engine support has been added.
10737 *Nils Larsch <nla@trustcenter.de>*
10739 * Include some named elliptic curves, and add OIDs from X9.62,
10740 SECG, and WAP/WTLS. Each curve can be obtained from the new
10742 EC_GROUP_new_by_curve_name(),
10743 and the list of available named curves can be obtained with
10744 EC_get_builtin_curves().
10745 Also add a 'curve_name' member to EC_GROUP objects, which can be
10747 EC_GROUP_set_curve_name()
10748 EC_GROUP_get_curve_name()
10750 *Nils Larsch <larsch@trustcenter.de, Bodo Moeller*
10752 * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
10753 was actually never needed) and in BN_mul(). The removal in BN_mul()
10754 required a small change in bn_mul_part_recursive() and the addition
10755 of the functions bn_cmp_part_words(), bn_sub_part_words() and
10756 bn_add_part_words(), which do the same thing as bn_cmp_words(),
10757 bn_sub_words() and bn_add_words() except they take arrays with
10762 ### Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
10764 * Cleanse PEM buffers before freeing them since they may contain
10767 *Benjamin Bennett <ben@psc.edu>*
10769 * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
10770 a ciphersuite string such as "DEFAULT:RSA" cannot enable
10771 authentication-only ciphersuites.
10775 * Since AES128 and AES256 share a single mask bit in the logic of
10776 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
10777 kludge to work properly if AES128 is available and AES256 isn't.
10781 * Expand security boundary to match 1.1.1 module.
10785 * Remove redundant features: hash file source, editing of test vectors
10786 modify fipsld to use external fips_premain.c signature.
10790 * New perl script mkfipsscr.pl to create shell scripts or batch files to
10791 run algorithm test programs.
10795 * Make algorithm test programs more tolerant of whitespace.
10799 * Have SSL/TLS server implementation tolerate "mismatched" record
10800 protocol version while receiving ClientHello even if the
10801 ClientHello is fragmented. (The server can't insist on the
10802 particular protocol version it has chosen before the ServerHello
10803 message has informed the client about his choice.)
10807 * Load error codes if they are not already present instead of using a
10808 static variable. This allows them to be cleanly unloaded and reloaded.
10812 ### Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
10814 * Introduce limits to prevent malicious keys being able to
10815 cause a denial of service. ([CVE-2006-2940])
10817 *Steve Henson, Bodo Moeller*
10819 * Fix ASN.1 parsing of certain invalid structures that can result
10820 in a denial of service. ([CVE-2006-2937]) [Steve Henson]
10822 * Fix buffer overflow in SSL_get_shared_ciphers() function.
10823 ([CVE-2006-3738]) [Tavis Ormandy and Will Drewry, Google Security Team]
10825 * Fix SSL client code which could crash if connecting to a
10826 malicious SSLv2 server. ([CVE-2006-4343])
10828 *Tavis Ormandy and Will Drewry, Google Security Team*
10830 * Change ciphersuite string processing so that an explicit
10831 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
10832 will no longer include "AES128-SHA"), and any other similar
10833 ciphersuite (same bitmap) from *other* protocol versions (so that
10834 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
10835 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
10836 changes from 0.9.8b and 0.9.8d.
10840 ### Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
10842 * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
10843 ([CVE-2006-4339]) [Ben Laurie and Google Security Team]
10845 * Change the Unix randomness entropy gathering to use poll() when
10846 possible instead of select(), since the latter has some
10847 undesirable limitations.
10849 *Darryl Miles via Richard Levitte and Bodo Moeller*
10851 * Disable rogue ciphersuites:
10853 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
10854 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
10855 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
10857 The latter two were purportedly from
10858 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
10861 Also deactivate the remaining ciphersuites from
10862 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
10863 unofficial, and the ID has long expired.
10867 * Fix RSA blinding Heisenbug (problems sometimes occurred on
10868 dual-core machines) and other potential thread-safety issues.
10872 ### Changes between 0.9.7i and 0.9.7j [04 May 2006]
10874 * Adapt fipsld and the build system to link against the validated FIPS
10875 module in FIPS mode.
10879 * Fixes for VC++ 2005 build under Windows.
10883 * Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
10884 from a Windows bash shell such as MSYS. It is autodetected from the
10885 "config" script when run from a VC++ environment. Modify standard VC++
10886 build to use fipscanister.o from the GNU make build.
10890 ### Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
10892 * Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
10893 The value now differs depending on if you build for FIPS or not.
10894 BEWARE! A program linked with a shared FIPSed libcrypto can't be
10895 safely run with a non-FIPSed libcrypto, as it may crash because of
10896 the difference induced by this change.
10900 ### Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
10902 * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
10903 (part of SSL_OP_ALL). This option used to disable the
10904 countermeasure against man-in-the-middle protocol-version
10905 rollback in the SSL 2.0 server implementation, which is a bad
10906 idea. ([CVE-2005-2969])
10908 *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
10909 for Information Security, National Institute of Advanced Industrial
10910 Science and Technology [AIST, Japan)]*
10912 * Minimal support for X9.31 signatures and PSS padding modes. This is
10913 mainly for FIPS compliance and not fully integrated at this stage.
10917 * For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
10918 the exponentiation using a fixed-length exponent. (Otherwise,
10919 the information leaked through timing could expose the secret key
10920 after many signatures; cf. Bleichenbacher's attack on DSA with
10925 * Make a new fixed-window mod_exp implementation the default for
10926 RSA, DSA, and DH private-key operations so that the sequence of
10927 squares and multiplies and the memory access pattern are
10928 independent of the particular secret key. This will mitigate
10929 cache-timing and potential related attacks.
10931 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
10932 and this is automatically used by BN_mod_exp_mont() if the new flag
10933 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
10934 will use this BN flag for private exponents unless the flag
10935 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
10936 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
10938 *Matthew D Wood (Intel Corp), with some changes by Bodo Moeller*
10940 * Change the client implementation for SSLv23_method() and
10941 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
10942 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
10943 (Previously, the SSL 2.0 backwards compatible Client Hello
10944 message format would be used even with SSL_OP_NO_SSLv2.)
10948 * Add support for smime-type MIME parameter in S/MIME messages which some
10953 * New function BN_MONT_CTX_set_locked() to set montgomery parameters in
10954 a threadsafe manner. Modify rsa code to use new function and add calls
10955 to dsa and dh code (which had race conditions before).
10959 * Include the fixed error library code in the C error file definitions
10960 instead of fixing them up at runtime. This keeps the error code
10961 structures constant.
10965 ### Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
10967 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
10970 * Fixes for newer kerberos headers. NB: the casts are needed because
10971 the 'length' field is signed on one version and unsigned on another
10972 with no (?) obvious way to tell the difference, without these VC++
10973 complains. Also the "definition" of FAR (blank) is no longer included
10974 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
10975 some needed definitions.
10979 * Undo Cygwin change.
10983 * Added support for proxy certificates according to RFC 3820.
10984 Because they may be a security thread to unaware applications,
10985 they must be explicitly allowed in run-time. See
10986 docs/HOWTO/proxy_certificates.txt for further information.
10990 ### Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
10992 * Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
10993 server and client random values. Previously
10994 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
10995 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
10997 This change has negligible security impact because:
10999 1. Server and client random values still have 24 bytes of pseudo random
11002 2. Server and client random values are sent in the clear in the initial
11005 3. The master secret is derived using the premaster secret (48 bytes in
11006 size for static RSA ciphersuites) as well as client server and random
11009 The OpenSSL team would like to thank the UK NISCC for bringing this issue
11012 *Stephen Henson, reported by UK NISCC*
11014 * Use Windows randomness collection on Cygwin.
11018 * Fix hang in EGD/PRNGD query when communication socket is closed
11019 prematurely by EGD/PRNGD.
11021 *Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014*
11023 * Prompt for pass phrases when appropriate for PKCS12 input format.
11027 * Back-port of selected performance improvements from development
11028 branch, as well as improved support for PowerPC platforms.
11032 * Add lots of checks for memory allocation failure, error codes to indicate
11033 failure and freeing up memory if a failure occurs.
11035 *Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson*
11037 * Add new -passin argument to dgst.
11041 * Perform some character comparisons of different types in X509_NAME_cmp:
11042 this is needed for some certificates that re-encode DNs into UTF8Strings
11043 (in violation of RFC3280) and can't or won't issue name rollover
11048 * Make an explicit check during certificate validation to see that
11049 the CA setting in each certificate on the chain is correct. As a
11050 side effect always do the following basic checks on extensions,
11051 not just when there's an associated purpose to the check:
11053 - if there is an unhandled critical extension (unless the user
11054 has chosen to ignore this fault)
11055 - if the path length has been exceeded (if one is set at all)
11056 - that certain extensions fit the associated purpose (if one has
11061 ### Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
11063 * Avoid a race condition when CRLs are checked in a multi threaded
11064 environment. This would happen due to the reordering of the revoked
11065 entries during signature checking and serial number lookup. Now the
11066 encoding is cached and the serial number sort performed under a lock.
11067 Add new STACK function sk_is_sorted().
11071 * Add Delta CRL to the extension code.
11075 * Various fixes to s3_pkt.c so alerts are sent properly.
11077 *David Holmes <d.holmes@f5.com>*
11079 * Reduce the chances of duplicate issuer name and serial numbers (in
11080 violation of RFC3280) using the OpenSSL certificate creation utilities.
11081 This is done by creating a random 64 bit value for the initial serial
11082 number when a serial number file is created or when a self signed
11083 certificate is created using 'openssl req -x509'. The initial serial
11084 number file is created using 'openssl x509 -next_serial' in CA.pl
11085 rather than being initialized to 1.
11089 ### Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
11091 * Fix null-pointer assignment in do_change_cipher_spec() revealed
11092 by using the Codenomicon TLS Test Tool ([CVE-2004-0079])
11094 *Joe Orton, Steve Henson*
11096 * Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
11099 *Joe Orton, Steve Henson*
11101 * Make it possible to have multiple active certificates with the same
11102 subject in the CA index file. This is done only if the keyword
11103 'unique_subject' is set to 'no' in the main CA section (default
11104 if 'CA_default') of the configuration file. The value is saved
11105 with the database itself in a separate index attribute file,
11106 named like the index file with '.attr' appended to the name.
11110 * X509 verify fixes. Disable broken certificate workarounds when
11111 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
11112 keyUsage extension present. Don't accept CRLs with unhandled critical
11113 extensions: since verify currently doesn't process CRL extensions this
11114 rejects a CRL with *any* critical extensions. Add new verify error codes
11119 * When creating an OCSP nonce use an OCTET STRING inside the extnValue.
11120 A clarification of RFC2560 will require the use of OCTET STRINGs and
11121 some implementations cannot handle the current raw format. Since OpenSSL
11122 copies and compares OCSP nonces as opaque blobs without any attempt at
11123 parsing them this should not create any compatibility issues.
11127 * New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
11128 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
11129 this HMAC (and other) operations are several times slower than OpenSSL
11134 * Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
11136 *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
11138 * Use the correct content when signing type "other".
11142 ### Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
11144 * Fix various bugs revealed by running the NISCC test suite:
11146 Stop out of bounds reads in the ASN1 code when presented with
11147 invalid tags (CVE-2003-0543 and CVE-2003-0544).
11149 Free up ASN1_TYPE correctly if ANY type is invalid ([CVE-2003-0545]).
11151 If verify callback ignores invalid public key errors don't try to check
11152 certificate signature with the NULL public key.
11156 * New -ignore_err option in ocsp application to stop the server
11157 exiting on the first error in a request.
11161 * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
11162 if the server requested one: as stated in TLS 1.0 and SSL 3.0
11167 * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
11168 extra data after the compression methods not only for TLS 1.0
11169 but also for SSL 3.0 (as required by the specification).
11171 *Bodo Moeller; problem pointed out by Matthias Loepfe*
11173 * Change X509_certificate_type() to mark the key as exported/exportable
11174 when it's 512 *bits* long, not 512 bytes.
11178 * Change AES_cbc_encrypt() so it outputs exact multiple of
11179 blocks during encryption.
11183 * Various fixes to base64 BIO and non blocking I/O. On write
11184 flushes were not handled properly if the BIO retried. On read
11185 data was not being buffered properly and had various logic bugs.
11186 This also affects blocking I/O when the data being decoded is a
11191 * Various S/MIME bugfixes and compatibility changes:
11192 output correct application/pkcs7 MIME type if
11193 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
11194 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
11195 of files as .eml work). Correctly handle very long lines in MIME
11200 ### Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
11202 * Countermeasure against the Klima-Pokorny-Rosa extension of
11203 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
11204 a protocol version number mismatch like a decryption error
11205 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
11209 * Turn on RSA blinding by default in the default implementation
11210 to avoid a timing attack. Applications that don't want it can call
11211 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
11212 They would be ill-advised to do so in most cases.
11214 *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
11216 * Change RSA blinding code so that it works when the PRNG is not
11217 seeded (in this case, the secret RSA exponent is abused as
11218 an unpredictable seed -- if it is not unpredictable, there
11219 is no point in blinding anyway). Make RSA blinding thread-safe
11220 by remembering the creator's thread ID in rsa->blinding and
11221 having all other threads use local one-time blinding factors
11222 (this requires more computation than sharing rsa->blinding, but
11223 avoids excessive locking; and if an RSA object is not shared
11224 between threads, blinding will still be very fast).
11228 * Fixed a typo bug that would cause ENGINE_set_default() to set an
11229 ENGINE as defaults for all supported algorithms irrespective of
11230 the 'flags' parameter. 'flags' is now honoured, so applications
11231 should make sure they are passing it correctly.
11235 * Target "mingw" now allows native Windows code to be generated in
11236 the Cygwin environment as well as with the MinGW compiler.
11240 ### Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
11242 * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
11243 via timing by performing a MAC computation even if incorrect
11244 block cipher padding has been found. This is a countermeasure
11245 against active attacks where the attacker has to distinguish
11246 between bad padding and a MAC verification error. ([CVE-2003-0078])
11248 *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
11249 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
11250 Martin Vuagnoux (EPFL, Ilion)*
11252 * Make the no-err option work as intended. The intention with no-err
11253 is not to have the whole error stack handling routines removed from
11254 libcrypto, it's only intended to remove all the function name and
11255 reason texts, thereby removing some of the footprint that may not
11256 be interesting if those errors aren't displayed anyway.
11258 NOTE: it's still possible for any application or module to have its
11259 own set of error texts inserted. The routines are there, just not
11260 used by default when no-err is given.
11264 * Add support for FreeBSD on IA64.
11266 *dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454*
11268 * Adjust DES_cbc_cksum() so it returns the same value as the MIT
11269 Kerberos function mit_des_cbc_cksum(). Before this change,
11270 the value returned by DES_cbc_cksum() was like the one from
11271 mit_des_cbc_cksum(), except the bytes were swapped.
11273 *Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte*
11275 * Allow an application to disable the automatic SSL chain building.
11276 Before this a rather primitive chain build was always performed in
11277 ssl3_output_cert_chain(): an application had no way to send the
11278 correct chain if the automatic operation produced an incorrect result.
11280 Now the chain builder is disabled if either:
11282 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
11284 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
11286 The reasoning behind this is that an application would not want the
11287 auto chain building to take place if extra chain certificates are
11288 present and it might also want a means of sending no additional
11289 certificates (for example the chain has two certificates and the
11294 * Add the possibility to build without the ENGINE framework.
11296 *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
11298 * Under Win32 gmtime() can return NULL: check return value in
11299 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
11303 * DSA routines: under certain error conditions uninitialized BN objects
11304 could be freed. Solution: make sure initialization is performed early
11305 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
11306 Nils Larsch <nla@trustcenter.de> via PR#459)
11310 * Another fix for SSLv2 session ID handling: the session ID was incorrectly
11311 checked on reconnect on the client side, therefore session resumption
11312 could still fail with a "ssl session id is different" error. This
11313 behaviour is masked when SSL_OP_ALL is used due to
11314 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
11315 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
11316 followup to PR #377.
11320 * IA-32 assembler support enhancements: unified ELF targets, support
11321 for SCO/Caldera platforms, fix for Cygwin shared build.
11325 * Add support for FreeBSD on sparc64. As a consequence, support for
11326 FreeBSD on non-x86 processors is separate from x86 processors on
11327 the config script, much like the NetBSD support.
11329 *Richard Levitte & Kris Kennaway <kris@obsecurity.org>*
11331 ### Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
11333 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
11336 * Fix session ID handling in SSLv2 client code: the SERVER FINISHED
11337 code (06) was taken as the first octet of the session ID and the last
11338 octet was ignored consequently. As a result SSLv2 client side session
11339 caching could not have worked due to the session ID mismatch between
11341 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
11346 * Change the declaration of needed Kerberos libraries to use EX_LIBS
11347 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
11352 * The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
11353 seems that in spite of existing for more than a year, many application
11354 author have done nothing to provide the necessary callbacks, which
11355 means that this particular engine will not work properly anywhere.
11356 This is a very unfortunate situation which forces us, in the name
11357 of usability, to give the hw_ncipher.c a static lock, which is part
11359 NOTE: This is for the 0.9.7 series ONLY. This hack will never
11360 appear in 0.9.8 or later. We EXPECT application authors to have
11361 dealt properly with this when 0.9.8 is released (unless we actually
11362 make such changes in the libcrypto locking code that changes will
11363 have to be made anyway).
11367 * In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
11368 octets have been read, EOF or an error occurs. Without this change
11369 some truncated ASN1 structures will not produce an error.
11373 * Disable Heimdal support, since it hasn't been fully implemented.
11374 Still give the possibility to force the use of Heimdal, but with
11375 warnings and a request that patches get sent to openssl-dev.
11379 * Add the VC-CE target, introduce the WINCE sysname, and add
11380 INSTALL.WCE and appropriate conditionals to make it build.
11382 *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
11384 * Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
11385 cygssl-x.y.z.dll, where x, y and z are the major, minor and
11386 edit numbers of the version.
11388 *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
11390 * Introduce safe string copy and catenation functions
11391 (BUF_strlcpy() and BUF_strlcat()).
11393 *Ben Laurie (CHATS) and Richard Levitte*
11395 * Avoid using fixed-size buffers for one-line DNs.
11397 *Ben Laurie (CHATS)*
11399 * Add BUF_MEM_grow_clean() to avoid information leakage when
11400 resizing buffers containing secrets, and use where appropriate.
11402 *Ben Laurie (CHATS)*
11404 * Avoid using fixed size buffers for configuration file location.
11406 *Ben Laurie (CHATS)*
11408 * Avoid filename truncation for various CA files.
11410 *Ben Laurie (CHATS)*
11412 * Use sizeof in preference to magic numbers.
11414 *Ben Laurie (CHATS)*
11416 * Avoid filename truncation in cert requests.
11418 *Ben Laurie (CHATS)*
11420 * Add assertions to check for (supposedly impossible) buffer
11423 *Ben Laurie (CHATS)*
11425 * Don't cache truncated DNS entries in the local cache (this could
11426 potentially lead to a spoofing attack).
11428 *Ben Laurie (CHATS)*
11430 * Fix various buffers to be large enough for hex/decimal
11431 representations in a platform independent manner.
11433 *Ben Laurie (CHATS)*
11435 * Add CRYPTO_realloc_clean() to avoid information leakage when
11436 resizing buffers containing secrets, and use where appropriate.
11438 *Ben Laurie (CHATS)*
11440 * Add BIO_indent() to avoid much slightly worrying code to do
11443 *Ben Laurie (CHATS)*
11445 * Convert sprintf()/BIO_puts() to BIO_printf().
11447 *Ben Laurie (CHATS)*
11449 * buffer_gets() could terminate with the buffer only half
11452 *Ben Laurie (CHATS)*
11454 * Add assertions to prevent user-supplied crypto functions from
11455 overflowing internal buffers by having large block sizes, etc.
11457 *Ben Laurie (CHATS)*
11459 * New OPENSSL_assert() macro (similar to assert(), but enabled
11462 *Ben Laurie (CHATS)*
11464 * Eliminate unused copy of key in RC4.
11466 *Ben Laurie (CHATS)*
11468 * Eliminate unused and incorrectly sized buffers for IV in pem.h.
11470 *Ben Laurie (CHATS)*
11472 * Fix off-by-one error in EGD path.
11474 *Ben Laurie (CHATS)*
11476 * If RANDFILE path is too long, ignore instead of truncating.
11478 *Ben Laurie (CHATS)*
11480 * Eliminate unused and incorrectly sized X.509 structure
11483 *Ben Laurie (CHATS)*
11485 * Eliminate unused and dangerous function knumber().
11487 *Ben Laurie (CHATS)*
11489 * Eliminate unused and dangerous structure, KSSL_ERR.
11491 *Ben Laurie (CHATS)*
11493 * Protect against overlong session ID context length in an encoded
11494 session object. Since these are local, this does not appear to be
11497 *Ben Laurie (CHATS)*
11499 * Change from security patch (see 0.9.6e below) that did not affect
11500 the 0.9.6 release series:
11502 Remote buffer overflow in SSL3 protocol - an attacker could
11503 supply an oversized master key in Kerberos-enabled versions.
11506 *Ben Laurie (CHATS)*
11508 * Change the SSL kerb5 codes to match RFC 2712.
11512 * Make -nameopt work fully for req and add -reqopt switch.
11514 *Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson*
11516 * The "block size" for block ciphers in CFB and OFB mode should be 1.
11518 *Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>*
11520 * Make sure tests can be performed even if the corresponding algorithms
11521 have been removed entirely. This was also the last step to make
11522 OpenSSL compilable with DJGPP under all reasonable conditions.
11524 *Richard Levitte, Doug Kaufman <dkaufman@rahul.net>*
11526 * Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
11527 to allow version independent disabling of normally unselected ciphers,
11528 which may be activated as a side-effect of selecting a single cipher.
11530 (E.g., cipher list string "RSA" enables ciphersuites that are left
11531 out of "ALL" because they do not provide symmetric encryption.
11532 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
11534 *Lutz Jaenicke, Bodo Moeller*
11536 * Add appropriate support for separate platform-dependent build
11537 directories. The recommended way to make a platform-dependent
11538 build directory is the following (tested on Linux), maybe with
11541 # Place yourself outside of the OpenSSL source tree. In
11542 # this example, the environment variable OPENSSL_SOURCE
11543 # is assumed to contain the absolute OpenSSL source directory.
11544 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
11545 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
11546 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
11547 mkdir -p `dirname $F`
11548 ln -s $OPENSSL_SOURCE/$F $F
11551 To be absolutely sure not to disturb the source tree, a "make clean"
11552 is a good thing. If it isn't successful, don't worry about it,
11553 it probably means the source directory is very clean.
11557 * Make sure any ENGINE control commands make local copies of string
11558 pointers passed to them whenever necessary. Otherwise it is possible
11559 the caller may have overwritten (or deallocated) the original string
11560 data when a later ENGINE operation tries to use the stored values.
11562 *Götz Babin-Ebell <babinebell@trustcenter.de>*
11564 * Improve diagnostics in file reading and command-line digests.
11566 *Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>*
11568 * Add AES modes CFB and OFB to the object database. Correct an
11569 error in AES-CFB decryption.
11573 * Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
11574 allows existing EVP_CIPHER_CTX structures to be reused after
11575 calling `EVP_*Final()`. This behaviour is used by encryption
11576 BIOs and some applications. This has the side effect that
11577 applications must explicitly clean up cipher contexts with
11578 EVP_CIPHER_CTX_cleanup() or they will leak memory.
11582 * Check the values of dna and dnb in bn_mul_recursive before calling
11583 bn_mul_comba (a non zero value means the a or b arrays do not contain
11584 n2 elements) and fallback to bn_mul_normal if either is not zero.
11588 * Fix escaping of non-ASCII characters when using the -subj option
11589 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
11593 * Make object definitions compliant to LDAP (RFC2256): SN is the short
11594 form for "surname", serialNumber has no short form.
11595 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
11596 therefore remove "mail" short name for "internet 7".
11597 The OID for unique identifiers in X509 certificates is
11598 x500UniqueIdentifier, not uniqueIdentifier.
11599 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
11603 * Add an "init" command to the ENGINE config module and auto initialize
11604 ENGINEs. Without any "init" command the ENGINE will be initialized
11605 after all ctrl commands have been executed on it. If init=1 the
11606 ENGINE is initialized at that point (ctrls before that point are run
11607 on the uninitialized ENGINE and after on the initialized one). If
11608 init=0 then the ENGINE will not be initialized at all.
11612 * Fix the 'app_verify_callback' interface so that the user-defined
11613 argument is actually passed to the callback: In the
11614 SSL_CTX_set_cert_verify_callback() prototype, the callback
11615 declaration has been changed from
11618 int (*cb)(X509_STORE_CTX *,void *);
11619 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
11620 i=s->ctx->app_verify_callback(&ctx)
11621 has been changed into
11622 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
11624 To update applications using SSL_CTX_set_cert_verify_callback(),
11625 a dummy argument can be added to their callback functions.
11627 *D. K. Smetters <smetters@parc.xerox.com>*
11629 * Added the '4758cca' ENGINE to support IBM 4758 cards.
11631 *Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe*
11633 * Add and OPENSSL_LOAD_CONF define which will cause
11634 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
11635 This allows older applications to transparently support certain
11636 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
11637 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
11638 load the config file and OPENSSL_add_all_algorithms_conf() which will
11639 always load it have also been added.
11643 * Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
11644 Adjust NIDs and EVP layer.
11646 *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
11648 * Config modules support in openssl utility.
11650 Most commands now load modules from the config file,
11651 though in a few (such as version) this isn't done
11652 because it couldn't be used for anything.
11654 In the case of ca and req the config file used is
11655 the same as the utility itself: that is the -config
11656 command line option can be used to specify an
11661 * Move default behaviour from OPENSSL_config(). If appname is NULL
11662 use "openssl_conf" if filename is NULL use default openssl config file.
11666 * Add an argument to OPENSSL_config() to allow the use of an alternative
11667 config section name. Add a new flag to tolerate a missing config file
11668 and move code to CONF_modules_load_file().
11672 * Support for crypto accelerator cards from Accelerated Encryption
11673 Processing, www.aep.ie. (Use engine 'aep')
11674 The support was copied from 0.9.6c [engine] and adapted/corrected
11675 to work with the new engine framework.
11677 *AEP Inc. and Richard Levitte*
11679 * Support for SureWare crypto accelerator cards from Baltimore
11680 Technologies. (Use engine 'sureware')
11681 The support was copied from 0.9.6c [engine] and adapted
11682 to work with the new engine framework.
11686 * Have the CHIL engine fork-safe (as defined by nCipher) and actually
11687 make the newer ENGINE framework commands for the CHIL engine work.
11689 *Toomas Kiisk <vix@cyber.ee> and Richard Levitte*
11691 * Make it possible to produce shared libraries on ReliantUNIX.
11693 *Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte*
11695 * Add the configuration target debug-linux-ppro.
11696 Make 'openssl rsa' use the general key loading routines
11697 implemented in apps.c, and make those routines able to
11698 handle the key format FORMAT_NETSCAPE and the variant
11701 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
11703 * Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
11705 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
11707 * Add -keyform to rsautl, and document -engine.
11709 *Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>*
11711 * Change BIO_new_file (crypto/bio/bss_file.c) to use new
11712 BIO_R_NO_SUCH_FILE error code rather than the generic
11713 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
11717 * Add new functions
11718 ERR_peek_last_error
11719 ERR_peek_last_error_line
11720 ERR_peek_last_error_line_data.
11721 These are similar to
11723 ERR_peek_error_line
11724 ERR_peek_error_line_data,
11725 but report on the latest error recorded rather than the first one
11726 still in the error queue.
11728 *Ben Laurie, Bodo Moeller*
11730 * default_algorithms option in ENGINE config module. This allows things
11732 default_algorithms = ALL
11733 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
11737 * Preliminary ENGINE config module.
11741 * New experimental application configuration code.
11745 * Change the AES code to follow the same name structure as all other
11746 symmetric ciphers, and behave the same way. Move everything to
11747 the directory crypto/aes, thereby obsoleting crypto/rijndael.
11749 *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
11751 * SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
11753 *Ben Laurie and Theo de Raadt*
11755 * Add option to output public keys in req command.
11757 *Massimiliano Pala madwolf@openca.org*
11759 * Use wNAFs in EC_POINTs_mul() for improved efficiency
11760 (up to about 10% better than before for P-192 and P-224).
11764 * New functions/macros
11766 SSL_CTX_set_msg_callback(ctx, cb)
11767 SSL_CTX_set_msg_callback_arg(ctx, arg)
11768 SSL_set_msg_callback(ssl, cb)
11769 SSL_set_msg_callback_arg(ssl, arg)
11771 to request calling a callback function
11773 void cb(int write_p, int version, int content_type,
11774 const void *buf, size_t len, SSL *ssl, void *arg)
11776 whenever a protocol message has been completely received
11777 (write_p == 0) or sent (write_p == 1). Here 'version' is the
11778 protocol version according to which the SSL library interprets
11779 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
11780 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
11781 the content type as defined in the SSL 3.0/TLS 1.0 protocol
11782 specification (change_cipher_spec(20), alert(21), handshake(22)).
11783 'buf' and 'len' point to the actual message, 'ssl' to the
11784 SSL object, and 'arg' is the application-defined value set by
11785 SSL[_CTX]_set_msg_callback_arg().
11787 'openssl s_client' and 'openssl s_server' have new '-msg' options
11788 to enable a callback that displays all protocol messages.
11792 * Change the shared library support so shared libraries are built as
11793 soon as the corresponding static library is finished, and thereby get
11794 openssl and the test programs linked against the shared library.
11795 This still only happens when the keyword "shard" has been given to
11796 the configuration scripts.
11798 NOTE: shared library support is still an experimental thing, and
11799 backward binary compatibility is still not guaranteed.
11801 *"Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte*
11803 * Add support for Subject Information Access extension.
11805 *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
11807 * Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
11808 additional bytes when new memory had to be allocated, not just
11809 when reusing an existing buffer.
11813 * New command line and configuration option 'utf8' for the req command.
11814 This allows field values to be specified as UTF8 strings.
11818 * Add -multi and -mr options to "openssl speed" - giving multiple parallel
11819 runs for the former and machine-readable output for the latter.
11823 * Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
11824 of the e-mail address in the DN (i.e., it will go into a certificate
11825 extension only). The new configuration file option 'email_in_dn = no'
11826 has the same effect.
11828 *Massimiliano Pala madwolf@openca.org*
11830 * Change all functions with names starting with `des_` to be starting
11831 with `DES_` instead. Add wrappers that are compatible with libdes,
11832 but are named `_ossl_old_des_*`. Finally, add macros that map the
11833 `des_*` symbols to the corresponding `_ossl_old_des_*` if libdes
11834 compatibility is desired. If OpenSSL 0.9.6c compatibility is
11835 desired, the `des_*` symbols will be mapped to `DES_*`, with one
11838 Since we provide two compatibility mappings, the user needs to
11839 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
11840 compatibility is desired. The default (i.e., when that macro
11841 isn't defined) is OpenSSL 0.9.6c compatibility.
11843 There are also macros that enable and disable the support of old
11844 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
11845 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
11846 are defined, the default will apply: to support the old des routines.
11848 In either case, one must include openssl/des.h to get the correct
11849 definitions. Do not try to just include openssl/des_old.h, that
11852 NOTE: This is a major break of an old API into a new one. Software
11853 authors are encouraged to switch to the `DES_` style functions. Some
11854 time in the future, des_old.h and the libdes compatibility functions
11855 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
11856 default), and then completely removed.
11860 * Test for certificates which contain unsupported critical extensions.
11861 If such a certificate is found during a verify operation it is
11862 rejected by default: this behaviour can be overridden by either
11863 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
11864 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
11865 X509_supported_extension() has also been added which returns 1 if a
11866 particular extension is supported.
11870 * Modify the behaviour of EVP cipher functions in similar way to digests
11871 to retain compatibility with existing code.
11875 * Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
11876 compatibility with existing code. In particular the 'ctx' parameter does
11877 not have to be to be initialized before the call to EVP_DigestInit() and
11878 it is tidied up after a call to EVP_DigestFinal(). New function
11879 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
11880 EVP_MD_CTX_copy() changed to not require the destination to be
11881 initialized valid and new function EVP_MD_CTX_copy_ex() added which
11882 requires the destination to be valid.
11884 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
11885 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
11889 * Change ssl3_get_message (ssl/s3_both.c) and the functions using it
11890 so that complete 'Handshake' protocol structures are kept in memory
11891 instead of overwriting 'msg_type' and 'length' with 'body' data.
11895 * Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
11897 *Massimo Santin via Richard Levitte*
11899 * Major restructuring to the underlying ENGINE code. This includes
11900 reduction of linker bloat, separation of pure "ENGINE" manipulation
11901 (initialisation, etc) from functionality dealing with implementations
11902 of specific crypto interfaces. This change also introduces integrated
11903 support for symmetric ciphers and digest implementations - so ENGINEs
11904 can now accelerate these by providing EVP_CIPHER and EVP_MD
11905 implementations of their own. This is detailed in
11906 [crypto/engine/README.md](crypto/engine/README.md)
11907 as it couldn't be adequately described here. However, there are a few
11908 API changes worth noting - some RSA, DSA, DH, and RAND functions that
11909 were changed in the original introduction of ENGINE code have now
11910 reverted back - the hooking from this code to ENGINE is now a good
11911 deal more passive and at run-time, operations deal directly with
11912 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
11913 dereferencing through an ENGINE pointer any more. Also, the ENGINE
11914 functions dealing with `BN_MOD_EXP[_CRT]` handlers have been removed -
11915 they were not being used by the framework as there is no concept of a
11916 BIGNUM_METHOD and they could not be generalised to the new
11917 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
11918 ENGINE_cpy() has been removed as it cannot be consistently defined in
11923 * Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
11927 * Change mkdef.pl to sort symbols that get the same entry number,
11928 and make sure the automatically generated functions `ERR_load_*`
11929 become part of libeay.num as well.
11933 * New function SSL_renegotiate_pending(). This returns true once
11934 renegotiation has been requested (either SSL_renegotiate() call
11935 or HelloRequest/ClientHello received from the peer) and becomes
11936 false once a handshake has been completed.
11937 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
11938 sends a HelloRequest, but does not ensure that a handshake takes
11939 place. SSL_renegotiate_pending() is useful for checking if the
11940 client has followed the request.)
11944 * New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
11945 By default, clients may request session resumption even during
11946 renegotiation (if session ID contexts permit); with this option,
11947 session resumption is possible only in the first handshake.
11949 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
11950 more bits available for options that should not be part of
11951 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
11955 * Add some demos for certificate and certificate request creation.
11959 * Make maximum certificate chain size accepted from the peer application
11960 settable (`SSL*_get/set_max_cert_list()`), as proposed by
11961 "Douglas E. Engert" <deengert@anl.gov>.
11965 * Add support for shared libraries for Unixware-7
11966 (Boyd Lynn Gerber <gerberb@zenez.com>).
11970 * Add a "destroy" handler to ENGINEs that allows structural cleanup to
11971 be done prior to destruction. Use this to unload error strings from
11972 ENGINEs that load their own error strings. NB: This adds two new API
11973 functions to "get" and "set" this destroy handler in an ENGINE.
11977 * Alter all existing ENGINE implementations (except "openssl" and
11978 "openbsd") to dynamically instantiate their own error strings. This
11979 makes them more flexible to be built both as statically-linked ENGINEs
11980 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
11981 Also, add stub code to each that makes building them as self-contained
11982 shared-libraries easier (see [README-Engine.md](README-Engine.md)).
11986 * Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
11987 implementations into applications that are completely implemented in
11988 self-contained shared-libraries. The "dynamic" ENGINE exposes control
11989 commands that can be used to configure what shared-library to load and
11990 to control aspects of the way it is handled. Also, made an update to
11991 the [README-Engine.md](README-Engine.md) file
11992 that brings its information up-to-date and
11993 provides some information and instructions on the "dynamic" ENGINE
11994 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
11998 * Make it possible to unload ranges of ERR strings with a new
11999 "ERR_unload_strings" function.
12003 * Add a copy() function to EVP_MD.
12007 * Make EVP_MD routines take a context pointer instead of just the
12008 md_data void pointer.
12012 * Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
12013 that the digest can only process a single chunk of data
12014 (typically because it is provided by a piece of
12015 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
12016 is only going to provide a single chunk of data, and hence the
12017 framework needn't accumulate the data for oneshot drivers.
12021 * As with "ERR", make it possible to replace the underlying "ex_data"
12022 functions. This change also alters the storage and management of global
12023 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
12024 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
12025 index counters. The API functions that use this state have been changed
12026 to take a "class_index" rather than pointers to the class's local STACK
12027 and counter, and there is now an API function to dynamically create new
12028 classes. This centralisation allows us to (a) plug a lot of the
12029 thread-safety problems that existed, and (b) makes it possible to clean
12030 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
12031 such data would previously have always leaked in application code and
12032 workarounds were in place to make the memory debugging turn a blind eye
12033 to it. Application code that doesn't use this new function will still
12034 leak as before, but their memory debugging output will announce it now
12035 rather than letting it slide.
12037 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
12038 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
12039 has a return value to indicate success or failure.
12043 * Make it possible to replace the underlying "ERR" functions such that the
12044 global state (2 LHASH tables and 2 locks) is only used by the "default"
12045 implementation. This change also adds two functions to "get" and "set"
12046 the implementation prior to it being automatically set the first time
12047 any other ERR function takes place. Ie. an application can call "get",
12048 pass the return value to a module it has just loaded, and that module
12049 can call its own "set" function using that value. This means the
12050 module's "ERR" operations will use (and modify) the error state in the
12051 application and not in its own statically linked copy of OpenSSL code.
12055 * Give DH, DSA, and RSA types their own `*_up_ref()` function to increment
12056 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
12057 the operation, and provides a more encapsulated way for external code
12058 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
12059 to use these functions rather than manually incrementing the counts.
12061 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
12065 * Add EVP test program.
12069 * Add symmetric cipher support to ENGINE. Expect the API to change!
12073 * New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
12074 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
12075 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
12076 These allow a CRL to be built without having to access X509_CRL fields
12077 directly. Modify 'ca' application to use new functions.
12081 * Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
12082 bug workarounds. Rollback attack detection is a security feature.
12083 The problem will only arise on OpenSSL servers when TLSv1 is not
12084 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
12085 Software authors not wanting to support TLSv1 will have special reasons
12086 for their choice and can explicitly enable this option.
12088 *Bodo Moeller, Lutz Jaenicke*
12090 * Rationalise EVP so it can be extended: don't include a union of
12091 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
12092 (similar to those existing for EVP_CIPHER_CTX).
12097 EVP_MD_CTX_init(&md); /* new function call */
12098 EVP_DigestInit(&md, EVP_sha1());
12099 EVP_DigestUpdate(&md, in, len);
12100 EVP_DigestFinal(&md, out, NULL);
12101 EVP_MD_CTX_cleanup(&md); /* new function call */
12105 * Make DES key schedule conform to the usual scheme, as well as
12106 correcting its structure. This means that calls to DES functions
12107 now have to pass a pointer to a des_key_schedule instead of a
12108 plain des_key_schedule (which was actually always a pointer
12111 des_key_schedule ks;
12113 des_set_key_checked(..., &ks);
12114 des_ncbc_encrypt(..., &ks, ...);
12116 (Note that a later change renames 'des_...' into 'DES_...'.)
12120 * Initial reduction of linker bloat: the use of some functions, such as
12121 PEM causes large amounts of unused functions to be linked in due to
12122 poor organisation. For example pem_all.c contains every PEM function
12123 which has a knock on effect of linking in large amounts of (unused)
12124 ASN1 code. Grouping together similar functions and splitting unrelated
12125 functions prevents this.
12129 * Cleanup of EVP macros.
12133 * Change historical references to `{NID,SN,LN}_des_ede` and ede3 to add the
12134 correct `_ecb suffix`.
12138 * Add initial OCSP responder support to ocsp application. The
12139 revocation information is handled using the text based index
12140 use by the ca application. The responder can either handle
12141 requests generated internally, supplied in files (for example
12142 via a CGI script) or using an internal minimal server.
12146 * Add configuration choices to get zlib compression for TLS.
12150 * Changes to Kerberos SSL for RFC 2712 compliance:
12151 1. Implemented real KerberosWrapper, instead of just using
12152 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
12153 2. Implemented optional authenticator field of KerberosWrapper.
12155 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
12156 and authenticator structs; see crypto/krb5/.
12158 Generalized Kerberos calls to support multiple Kerberos libraries.
12159 *Vern Staats <staatsvr@asc.hpc.mil>, Jeffrey Altman <jaltman@columbia.edu>
12160 via Richard Levitte*
12162 * Cause 'openssl speed' to use fully hard-coded DSA keys as it
12163 already does with RSA. testdsa.h now has 'priv_key/pub_key'
12164 values for each of the key sizes rather than having just
12165 parameters (and 'speed' generating keys each time).
12169 * Speed up EVP routines.
12172 pe 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
12173 s-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
12174 s-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
12175 s-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
12177 s-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
12178 s-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
12179 s-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
12182 s-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
12184 s-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
12188 * Added the OS2-EMX target.
12190 *"Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte*
12192 * Rewrite apps to use NCONF routines instead of the old CONF. New functions
12193 to support NCONF routines in extension code. New function CONF_set_nconf()
12194 to allow functions which take an NCONF to also handle the old LHASH
12195 structure: this means that the old CONF compatible routines can be
12196 retained (in particular wrt extensions) without having to duplicate the
12197 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
12201 * Enhance the general user interface with mechanisms for inner control
12202 and with possibilities to have yes/no kind of prompts.
12206 * Change all calls to low level digest routines in the library and
12207 applications to use EVP. Add missing calls to HMAC_cleanup() and
12208 don't assume HMAC_CTX can be copied using memcpy().
12210 *Verdon Walker <VWalker@novell.com>, Steve Henson*
12212 * Add the possibility to control engines through control names but with
12213 arbitrary arguments instead of just a string.
12214 Change the key loaders to take a UI_METHOD instead of a callback
12215 function pointer. NOTE: this breaks binary compatibility with earlier
12216 versions of OpenSSL [engine].
12217 Adapt the nCipher code for these new conditions and add a card insertion
12222 * Enhance the general user interface with mechanisms to better support
12223 dialog box interfaces, application-defined prompts, the possibility
12224 to use defaults (for example default passwords from somewhere else)
12225 and interrupts/cancellations.
12229 * Tidy up PKCS#12 attribute handling. Add support for the CSP name
12230 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
12234 * Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
12235 tidy up some unnecessarily weird code in 'sk_new()').
12237 *Geoff, reported by Diego Tartara <dtartara@novamens.com>*
12239 * Change the key loading routines for ENGINEs to use the same kind
12240 callback (pem_password_cb) as all other routines that need this
12245 * Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
12246 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
12247 than this minimum value is recommended.
12251 * New random seeder for OpenVMS, using the system process statistics
12252 that are easily reachable.
12256 * Windows apparently can't transparently handle global
12257 variables defined in DLLs. Initialisations such as:
12259 const ASN1_ITEM *it = &ASN1_INTEGER_it;
12261 won't compile. This is used by the any applications that need to
12262 declare their own ASN1 modules. This was fixed by adding the option
12263 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
12264 needed for static libraries under Win32.
12268 * New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
12269 setting of purpose and trust fields. New X509_STORE trust and
12270 purpose functions and tidy up setting in other SSL functions.
12274 * Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
12275 structure. These are inherited by X509_STORE_CTX when it is
12276 initialised. This allows various defaults to be set in the
12277 X509_STORE structure (such as flags for CRL checking and custom
12278 purpose or trust settings) for functions which only use X509_STORE_CTX
12279 internally such as S/MIME.
12281 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
12282 trust settings if they are not set in X509_STORE. This allows X509_STORE
12283 purposes and trust (in S/MIME for example) to override any set by default.
12285 Add command line options for CRL checking to smime, s_client and s_server
12290 * Initial CRL based revocation checking. If the CRL checking flag(s)
12291 are set then the CRL is looked up in the X509_STORE structure and
12292 its validity and signature checked, then if the certificate is found
12293 in the CRL the verify fails with a revoked error.
12295 Various new CRL related callbacks added to X509_STORE_CTX structure.
12297 Command line options added to 'verify' application to support this.
12299 This needs some additional work, such as being able to handle multiple
12300 CRLs with different times, extension based lookup (rather than just
12301 by subject name) and ultimately more complete V2 CRL extension
12306 * Add a general user interface API (crypto/ui/). This is designed
12307 to replace things like des_read_password and friends (backward
12308 compatibility functions using this new API are provided).
12309 The purpose is to remove prompting functions from the DES code
12310 section as well as provide for prompting through dialog boxes in
12311 a window system and the like.
12315 * Add "ex_data" support to ENGINE so implementations can add state at a
12316 per-structure level rather than having to store it globally.
12320 * Make it possible for ENGINE structures to be copied when retrieved by
12321 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
12322 This causes the "original" ENGINE structure to act like a template,
12323 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
12324 operational state can be localised to each ENGINE structure, despite the
12325 fact they all share the same "methods". New ENGINE structures returned in
12326 this case have no functional references and the return value is the single
12327 structural reference. This matches the single structural reference returned
12328 by ENGINE_by_id() normally, when it is incremented on the pre-existing
12333 * Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
12334 needs to match any other type at all we need to manually clear the
12339 * Changes to the "openssl engine" utility to include;
12340 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
12341 about an ENGINE's available control commands.
12342 - executing control commands from command line arguments using the
12343 '-pre' and '-post' switches. '-post' is only used if '-t' is
12344 specified and the ENGINE is successfully initialised. The syntax for
12345 the individual commands are colon-separated, for example;
12346 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
12350 * New dynamic control command support for ENGINEs. ENGINEs can now
12351 declare their own commands (numbers), names (strings), descriptions,
12352 and input types for run-time discovery by calling applications. A
12353 subset of these commands are implicitly classed as "executable"
12354 depending on their input type, and only these can be invoked through
12355 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
12356 can be based on user input, config files, etc). The distinction is
12357 that "executable" commands cannot return anything other than a boolean
12358 result and can only support numeric or string input, whereas some
12359 discoverable commands may only be for direct use through
12360 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
12361 pointers, or other custom uses. The "executable" commands are to
12362 support parameterisations of ENGINE behaviour that can be
12363 unambiguously defined by ENGINEs and used consistently across any
12364 OpenSSL-based application. Commands have been added to all the
12365 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
12366 control over shared-library paths without source code alterations.
12370 * Changed all ENGINE implementations to dynamically allocate their
12371 ENGINEs rather than declaring them statically. Apart from this being
12372 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
12373 this also allows the implementations to compile without using the
12374 internal engine_int.h header.
12378 * Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
12379 'const' value. Any code that should be able to modify a RAND_METHOD
12380 should already have non-const pointers to it (ie. they should only
12381 modify their own ones).
12385 * Made a variety of little tweaks to the ENGINE code.
12386 - "atalla" and "ubsec" string definitions were moved from header files
12387 to C code. "nuron" string definitions were placed in variables
12388 rather than hard-coded - allowing parameterisation of these values
12389 later on via ctrl() commands.
12390 - Removed unused "#if 0"'d code.
12391 - Fixed engine list iteration code so it uses ENGINE_free() to release
12392 structural references.
12393 - Constified the RAND_METHOD element of ENGINE structures.
12394 - Constified various get/set functions as appropriate and added
12395 missing functions (including a catch-all ENGINE_cpy that duplicates
12396 all ENGINE values onto a new ENGINE except reference counts/state).
12397 - Removed NULL parameter checks in get/set functions. Setting a method
12398 or function to NULL is a way of cancelling out a previously set
12399 value. Passing a NULL ENGINE parameter is just plain stupid anyway
12400 and doesn't justify the extra error symbols and code.
12401 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
12402 flags from engine_int.h to engine.h.
12403 - Changed prototypes for ENGINE handler functions (init(), finish(),
12404 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
12408 * Implement binary inversion algorithm for BN_mod_inverse in addition
12409 to the algorithm using long division. The binary algorithm can be
12410 used only if the modulus is odd. On 32-bit systems, it is faster
12411 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
12412 roughly 5-15% for 256-bit moduli), so we use it only for moduli
12413 up to 450 bits. In 64-bit environments, the binary algorithm
12414 appears to be advantageous for much longer moduli; here we use it
12415 for moduli up to 2048 bits.
12419 * Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
12420 could not support the combine flag in choice fields.
12424 * Add a 'copy_extensions' option to the 'ca' utility. This copies
12425 extensions from a certificate request to the certificate.
12429 * Allow multiple 'certopt' and 'nameopt' options to be separated
12430 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
12431 file: this allows the display of the certificate about to be
12432 signed to be customised, to allow certain fields to be included
12433 or excluded and extension details. The old system didn't display
12434 multicharacter strings properly, omitted fields not in the policy
12435 and couldn't display additional details such as extensions.
12439 * Function EC_POINTs_mul for multiple scalar multiplication
12440 of an arbitrary number of elliptic curve points
12441 \sum scalars[i]*points[i],
12442 optionally including the generator defined for the EC_GROUP:
12443 scalar*generator + \sum scalars[i]*points[i].
12445 EC_POINT_mul is a simple wrapper function for the typical case
12446 that the point list has just one item (besides the optional
12451 * First EC_METHODs for curves over GF(p):
12453 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
12454 operations and provides various method functions that can also
12455 operate with faster implementations of modular arithmetic.
12457 EC_GFp_mont_method() reuses most functions that are part of
12458 EC_GFp_simple_method, but uses Montgomery arithmetic.
12460 *Bodo Moeller; point addition and point doubling
12461 implementation directly derived from source code provided by
12462 Lenka Fibikova <fibikova@exp-math.uni-essen.de>*
12464 * Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
12465 crypto/ec/ec_lib.c):
12467 Curves are EC_GROUP objects (with an optional group generator)
12468 based on EC_METHODs that are built into the library.
12470 Points are EC_POINT objects based on EC_GROUP objects.
12472 Most of the framework would be able to handle curves over arbitrary
12473 finite fields, but as there are no obvious types for fields other
12474 than GF(p), some functions are limited to that for now.
12478 * Add the -HTTP option to s_server. It is similar to -WWW, but requires
12479 that the file contains a complete HTTP response.
12483 * Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
12484 change the def and num file printf format specifier from "%-40sXXX"
12485 to "%-39s XXX". The latter will always guarantee a space after the
12486 field while the former will cause them to run together if the field
12487 is 40 of more characters long.
12491 * Constify the cipher and digest 'method' functions and structures
12492 and modify related functions to take constant EVP_MD and EVP_CIPHER
12497 * Hide BN_CTX structure details in bn_lcl.h instead of publishing them
12498 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
12502 * Modify `EVP_Digest*()` routines so they now return values. Although the
12503 internal software routines can never fail additional hardware versions
12508 * Clean up crypto/err/err.h and change some error codes to avoid conflicts:
12510 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
12511 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
12514 ERR_R_NESTED_ASN1_ERROR
12516 ERR_R_MISSING_ASN1_EOS
12517 were 4 .. 9, conflicting with
12518 ERR_LIB_RSA (= ERR_R_RSA_LIB)
12520 ERR_LIB_PEM (= ERR_R_PEM_LIB).
12521 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
12523 Add new error code 'ERR_R_INTERNAL_ERROR'.
12527 * Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
12532 * New option '-subj arg' for 'openssl req' and 'openssl ca'. This
12533 sets the subject name for a new request or supersedes the
12534 subject name in a given request. Formats that can be parsed are
12535 'CN=Some Name, OU=myOU, C=IT'
12537 'CN=Some Name/OU=myOU/C=IT'.
12539 Add options '-batch' and '-verbose' to 'openssl req'.
12541 *Massimiliano Pala <madwolf@hackmasters.net>*
12543 * Introduce the possibility to access global variables through
12544 functions on platform were that's the best way to handle exporting
12545 global variables in shared libraries. To enable this functionality,
12546 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
12547 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
12548 is normally done by Configure or something similar).
12550 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
12551 in the source file (foo.c) like this:
12553 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
12554 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
12556 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
12557 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
12559 OPENSSL_DECLARE_GLOBAL(int,foo);
12560 #define foo OPENSSL_GLOBAL_REF(foo)
12561 OPENSSL_DECLARE_GLOBAL(double,bar);
12562 #define bar OPENSSL_GLOBAL_REF(bar)
12564 The #defines are very important, and therefore so is including the
12565 header file everywhere where the defined globals are used.
12567 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
12568 of ASN.1 items, but that structure is a bit different.
12570 The largest change is in util/mkdef.pl which has been enhanced with
12571 better and easier to understand logic to choose which symbols should
12572 go into the Windows .def files as well as a number of fixes and code
12573 cleanup (among others, algorithm keywords are now sorted
12574 lexicographically to avoid constant rewrites).
12578 * In BN_div() keep a copy of the sign of 'num' before writing the
12579 result to 'rm' because if rm==num the value will be overwritten
12580 and produce the wrong result if 'num' is negative: this caused
12581 problems with BN_mod() and BN_nnmod().
12585 * Function OCSP_request_verify(). This checks the signature on an
12586 OCSP request and verifies the signer certificate. The signer
12587 certificate is just checked for a generic purpose and OCSP request
12592 * Add OCSP_check_validity() function to check the validity of OCSP
12593 responses. OCSP responses are prepared in real time and may only
12594 be a few seconds old. Simply checking that the current time lies
12595 between thisUpdate and nextUpdate max reject otherwise valid responses
12596 caused by either OCSP responder or client clock inaccuracy. Instead
12597 we allow thisUpdate and nextUpdate to fall within a certain period of
12598 the current time. The age of the response can also optionally be
12599 checked. Two new options -validity_period and -status_age added to
12604 * If signature or public key algorithm is unrecognized print out its
12605 OID rather that just UNKNOWN.
12609 * Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
12610 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
12611 ID to be generated from the issuer certificate alone which can then be
12612 passed to OCSP_id_issuer_cmp().
12616 * New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
12617 ASN1 modules to export functions returning ASN1_ITEM pointers
12618 instead of the ASN1_ITEM structures themselves. This adds several
12619 new macros which allow the underlying ASN1 function/structure to
12620 be accessed transparently. As a result code should not use ASN1_ITEM
12621 references directly (such as &X509_it) but instead use the relevant
12622 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
12623 use of the new ASN1 code on platforms where exporting structures
12624 is problematical (for example in shared libraries) but exporting
12625 functions returning pointers to structures is not.
12629 * Add support for overriding the generation of SSL/TLS session IDs.
12630 These callbacks can be registered either in an SSL_CTX or per SSL.
12631 The purpose of this is to allow applications to control, if they wish,
12632 the arbitrary values chosen for use as session IDs, particularly as it
12633 can be useful for session caching in multiple-server environments. A
12634 command-line switch for testing this (and any client code that wishes
12635 to use such a feature) has been added to "s_server".
12637 *Geoff Thorpe, Lutz Jaenicke*
12639 * Modify mkdef.pl to recognise and parse preprocessor conditionals
12640 of the form `#if defined(...) || defined(...) || ...` and
12641 `#if !defined(...) && !defined(...) && ...`. This also avoids
12642 the growing number of special cases it was previously handling.
12646 * Make all configuration macros available for application by making
12647 sure they are available in opensslconf.h, by giving them names starting
12648 with `OPENSSL_` to avoid conflicts with other packages and by making
12649 sure e_os2.h will cover all platform-specific cases together with
12651 Additionally, it is now possible to define configuration/platform-
12652 specific names (called "system identities"). In the C code, these
12653 are prefixed with `OPENSSL_SYSNAME_`. e_os2.h will create another
12654 macro with the name beginning with `OPENSSL_SYS_`, which is determined
12655 from `OPENSSL_SYSNAME_*` or compiler-specific macros depending on
12660 * New option -set_serial to 'req' and 'x509' this allows the serial
12661 number to use to be specified on the command line. Previously self
12662 signed certificates were hard coded with serial number 0 and the
12663 CA options of 'x509' had to use a serial number in a file which was
12668 * New options to 'ca' utility to support V2 CRL entry extensions.
12669 Currently CRL reason, invalidity date and hold instruction are
12670 supported. Add new CRL extensions to V3 code and some new objects.
12674 * New function EVP_CIPHER_CTX_set_padding() this is used to
12675 disable standard block padding (aka PKCS#5 padding) in the EVP
12676 API, which was previously mandatory. This means that the data is
12677 not padded in any way and so the total length much be a multiple
12678 of the block size, otherwise an error occurs.
12682 * Initial (incomplete) OCSP SSL support.
12686 * New function OCSP_parse_url(). This splits up a URL into its host,
12687 port and path components: primarily to parse OCSP URLs. New -url
12688 option to ocsp utility.
12692 * New nonce behavior. The return value of OCSP_check_nonce() now
12693 reflects the various checks performed. Applications can decide
12694 whether to tolerate certain situations such as an absent nonce
12695 in a response when one was present in a request: the ocsp application
12696 just prints out a warning. New function OCSP_add1_basic_nonce()
12697 this is to allow responders to include a nonce in a response even if
12698 the request is nonce-less.
12702 * Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
12703 skipped when using openssl x509 multiple times on a single input file,
12704 e.g. `(openssl x509 -out cert1; openssl x509 -out cert2) <certs`.
12708 * Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
12709 set string type: to handle setting ASN1_TIME structures. Fix ca
12710 utility to correctly initialize revocation date of CRLs.
12714 * New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
12715 the clients preferred ciphersuites and rather use its own preferences.
12716 Should help to work around M$ SGC (Server Gated Cryptography) bug in
12717 Internet Explorer by ensuring unchanged hash method during stepup.
12718 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
12722 * Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
12723 to aes and add a new 'exist' option to print out symbols that don't
12728 * Additional options to ocsp utility to allow flags to be set and
12729 additional certificates supplied.
12733 * Add the option -VAfile to 'openssl ocsp', so the user can give the
12734 OCSP client a number of certificate to only verify the response
12739 * Update Rijndael code to version 3.0 and change EVP AES ciphers to
12740 handle the new API. Currently only ECB, CBC modes supported. Add new
12743 Add TLS AES ciphersuites as described in RFC3268, "Advanced
12744 Encryption Standard (AES) Ciphersuites for Transport Layer
12745 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
12746 not enabled by default and were not part of the "ALL" ciphersuite
12747 alias because they were not yet official; they could be
12748 explicitly requested by specifying the "AESdraft" ciphersuite
12749 group alias. In the final release of OpenSSL 0.9.7, the group
12750 alias is called "AES" and is part of "ALL".)
12752 *Ben Laurie, Steve Henson, Bodo Moeller*
12754 * New function OCSP_copy_nonce() to copy nonce value (if present) from
12755 request to response.
12759 * Functions for OCSP responders. OCSP_request_onereq_count(),
12760 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
12761 extract information from a certificate request. OCSP_response_create()
12762 creates a response and optionally adds a basic response structure.
12763 OCSP_basic_add1_status() adds a complete single response to a basic
12764 response and returns the OCSP_SINGLERESP structure just added (to allow
12765 extensions to be included for example). OCSP_basic_add1_cert() adds a
12766 certificate to a basic response and OCSP_basic_sign() signs a basic
12767 response with various flags. New helper functions ASN1_TIME_check()
12768 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
12769 (converts ASN1_TIME to GeneralizedTime).
12773 * Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
12774 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
12775 structure from a certificate. X509_pubkey_digest() digests the public_key
12776 contents: this is used in various key identifiers.
12780 * Make sk_sort() tolerate a NULL argument.
12782 *Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>*
12784 * New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
12785 passed by the function are trusted implicitly. If any of them signed the
12786 response then it is assumed to be valid and is not verified.
12790 * In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
12791 to data. This was previously part of the PKCS7 ASN1 code. This
12792 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
12793 *Steve Henson, reported by Kenneth R. Robinette
12794 <support@securenetterm.com>*
12796 * Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
12797 routines: without these tracing memory leaks is very painful.
12798 Fix leaks in PKCS12 and PKCS7 routines.
12802 * Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
12803 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
12804 effectively meant GeneralizedTime would never be used. Now it
12805 is initialised to -1 but X509_time_adj() now has to check the value
12806 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
12807 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
12808 *Steve Henson, reported by Kenneth R. Robinette
12809 <support@securenetterm.com>*
12811 * Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
12812 result in a zero length in the ASN1_INTEGER structure which was
12813 not consistent with the structure when d2i_ASN1_INTEGER() was used
12814 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
12815 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
12816 where it did not print out a minus for negative ASN1_INTEGER.
12820 * Add summary printout to ocsp utility. The various functions which
12821 convert status values to strings have been renamed to:
12822 OCSP_response_status_str(), OCSP_cert_status_str() and
12823 OCSP_crl_reason_str() and are no longer static. New options
12824 to verify nonce values and to disable verification. OCSP response
12825 printout format cleaned up.
12829 * Add additional OCSP certificate checks. These are those specified
12830 in RFC2560. This consists of two separate checks: the CA of the
12831 certificate being checked must either be the OCSP signer certificate
12832 or the issuer of the OCSP signer certificate. In the latter case the
12833 OCSP signer certificate must contain the OCSP signing extended key
12834 usage. This check is performed by attempting to match the OCSP
12835 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
12836 in the OCSP_CERTID structures of the response.
12840 * Initial OCSP certificate verification added to OCSP_basic_verify()
12841 and related routines. This uses the standard OpenSSL certificate
12842 verify routines to perform initial checks (just CA validity) and
12843 to obtain the certificate chain. Then additional checks will be
12844 performed on the chain. Currently the root CA is checked to see
12845 if it is explicitly trusted for OCSP signing. This is used to set
12846 a root CA as a global signing root: that is any certificate that
12847 chains to that CA is an acceptable OCSP signing certificate.
12851 * New '-extfile ...' option to 'openssl ca' for reading X.509v3
12852 extensions from a separate configuration file.
12853 As when reading extensions from the main configuration file,
12854 the '-extensions ...' option may be used for specifying the
12857 *Massimiliano Pala <madwolf@comune.modena.it>*
12859 * New OCSP utility. Allows OCSP requests to be generated or
12860 read. The request can be sent to a responder and the output
12861 parsed, outputted or printed in text form. Not complete yet:
12862 still needs to check the OCSP response validity.
12866 * New subcommands for 'openssl ca':
12867 `openssl ca -status <serial>` prints the status of the cert with
12868 the given serial number (according to the index file).
12869 `openssl ca -updatedb` updates the expiry status of certificates
12872 *Massimiliano Pala <madwolf@comune.modena.it>*
12874 * New '-newreq-nodes' command option to CA.pl. This is like
12875 '-newreq', but calls 'openssl req' with the '-nodes' option
12876 so that the resulting key is not encrypted.
12878 *Damien Miller <djm@mindrot.org>*
12880 * New configuration for the GNU Hurd.
12882 *Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte*
12884 * Initial code to implement OCSP basic response verify. This
12885 is currently incomplete. Currently just finds the signer's
12886 certificate and verifies the signature on the response.
12890 * New SSLeay_version code SSLEAY_DIR to determine the compiled-in
12891 value of OPENSSLDIR. This is available via the new '-d' option
12892 to 'openssl version', and is also included in 'openssl version -a'.
12896 * Allowing defining memory allocation callbacks that will be given
12897 file name and line number information in additional arguments
12898 (a `const char*` and an int). The basic functionality remains, as
12899 well as the original possibility to just replace malloc(),
12900 realloc() and free() by functions that do not know about these
12901 additional arguments. To register and find out the current
12902 settings for extended allocation functions, the following
12903 functions are provided:
12905 CRYPTO_set_mem_ex_functions
12906 CRYPTO_set_locked_mem_ex_functions
12907 CRYPTO_get_mem_ex_functions
12908 CRYPTO_get_locked_mem_ex_functions
12910 These work the same way as CRYPTO_set_mem_functions and friends.
12911 `CRYPTO_get_[locked_]mem_functions` now writes 0 where such an
12912 extended allocation function is enabled.
12913 Similarly, `CRYPTO_get_[locked_]mem_ex_functions` writes 0 where
12914 a conventional allocation function is enabled.
12916 *Richard Levitte, Bodo Moeller*
12918 * Finish off removing the remaining LHASH function pointer casts.
12919 There should no longer be any prototype-casting required when using
12920 the LHASH abstraction, and any casts that remain are "bugs". See
12921 the callback types and macros at the head of lhash.h for details
12922 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
12926 * Add automatic query of EGD sockets in RAND_poll() for the unix variant.
12927 If /dev/[u]random devices are not available or do not return enough
12928 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
12930 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
12931 /etc/entropy will be queried once each in this sequence, querying stops
12932 when enough entropy was collected without querying more sockets.
12936 * Change the Unix RAND_poll() variant to be able to poll several
12937 random devices, as specified by DEVRANDOM, until a sufficient amount
12938 of data has been collected. We spend at most 10 ms on each file
12939 (select timeout) and read in non-blocking mode. DEVRANDOM now
12940 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
12941 (previously it was just the string "/dev/urandom"), so on typical
12942 platforms the 10 ms delay will never occur.
12943 Also separate out the Unix variant to its own file, rand_unix.c.
12944 For VMS, there's a currently-empty rand_vms.c.
12948 * Move OCSP client related routines to ocsp_cl.c. These
12949 provide utility functions which an application needing
12950 to issue a request to an OCSP responder and analyse the
12951 response will typically need: as opposed to those which an
12952 OCSP responder itself would need which will be added later.
12954 OCSP_request_sign() signs an OCSP request with an API similar
12955 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
12956 response. OCSP_response_get1_basic() extracts basic response
12957 from response. OCSP_resp_find_status(): finds and extracts status
12958 information from an OCSP_CERTID structure (which will be created
12959 when the request structure is built). These are built from lower
12960 level functions which work on OCSP_SINGLERESP structures but
12961 won't normally be used unless the application wishes to examine
12962 extensions in the OCSP response for example.
12964 Replace nonce routines with a pair of functions.
12965 OCSP_request_add1_nonce() adds a nonce value and optionally
12966 generates a random value. OCSP_check_nonce() checks the
12967 validity of the nonce in an OCSP response.
12971 * Change function OCSP_request_add() to OCSP_request_add0_id().
12972 This doesn't copy the supplied OCSP_CERTID and avoids the
12973 need to free up the newly created id. Change return type
12974 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
12975 This can then be used to add extensions to the request.
12976 Deleted OCSP_request_new(), since most of its functionality
12977 is now in OCSP_REQUEST_new() (and the case insensitive name
12978 clash) apart from the ability to set the request name which
12979 will be added elsewhere.
12983 * Update OCSP API. Remove obsolete extensions argument from
12984 various functions. Extensions are now handled using the new
12985 OCSP extension code. New simple OCSP HTTP function which
12986 can be used to send requests and parse the response.
12990 * Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
12991 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
12992 uses the special reorder version of SET OF to sort the attributes
12993 and reorder them to match the encoded order. This resolves a long
12994 standing problem: a verify on a PKCS7 structure just after signing
12995 it used to fail because the attribute order did not match the
12996 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
12997 it uses the received order. This is necessary to tolerate some broken
12998 software that does not order SET OF. This is handled by encoding
12999 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
13000 to produce the required SET OF.
13004 * Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
13005 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
13006 files to get correct declarations of the ASN.1 item variables.
13010 * Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
13011 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
13012 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
13013 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
13014 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
13015 ASN1_ITEM and no wrapper functions.
13019 * New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
13020 replace the old function pointer based I/O routines. Change most of
13021 the `*_d2i_bio()` and `*_d2i_fp()` functions to use these.
13025 * Enhance mkdef.pl to be more accepting about spacing in C preprocessor
13026 lines, recognize more "algorithms" that can be deselected, and make
13027 it complain about algorithm deselection that isn't recognised.
13031 * New ASN1 functions to handle dup, sign, verify, digest, pack and
13032 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
13033 to use new functions. Add NO_ASN1_OLD which can be set to remove
13034 some old style ASN1 functions: this can be used to determine if old
13035 code will still work when these eventually go away.
13039 * New extension functions for OCSP structures, these follow the
13040 same conventions as certificates and CRLs.
13044 * New function X509V3_add1_i2d(). This automatically encodes and
13045 adds an extension. Its behaviour can be customised with various
13046 flags to append, replace or delete. Various wrappers added for
13047 certificates and CRLs.
13051 * Fix to avoid calling the underlying ASN1 print routine when
13052 an extension cannot be parsed. Correct a typo in the
13053 OCSP_SERVICELOC extension. Tidy up print OCSP format.
13057 * Make mkdef.pl parse some of the ASN1 macros and add appropriate
13058 entries for variables.
13062 * Add functionality to apps/openssl.c for detecting locking
13063 problems: As the program is single-threaded, all we have
13064 to do is register a locking callback using an array for
13065 storing which locks are currently held by the program.
13069 * Use a lock around the call to CRYPTO_get_ex_new_index() in
13070 SSL_get_ex_data_X509_STORE_idx(), which is used in
13071 ssl_verify_cert_chain() and thus can be called at any time
13072 during TLS/SSL handshakes so that thread-safety is essential.
13073 Unfortunately, the ex_data design is not at all suited
13074 for multi-threaded use, so it probably should be abolished.
13078 * Added Broadcom "ubsec" ENGINE to OpenSSL.
13080 *Broadcom, tweaked and integrated by Geoff Thorpe*
13082 * Move common extension printing code to new function
13083 X509V3_print_extensions(). Reorganise OCSP print routines and
13084 implement some needed OCSP ASN1 functions. Add OCSP extensions.
13088 * New function X509_signature_print() to remove duplication in some
13093 * Add a special meaning when SET OF and SEQUENCE OF flags are both
13094 set (this was treated exactly the same as SET OF previously). This
13095 is used to reorder the STACK representing the structure to match the
13096 encoding. This will be used to get round a problem where a PKCS7
13097 structure which was signed could not be verified because the STACK
13098 order did not reflect the encoded order.
13102 * Reimplement the OCSP ASN1 module using the new code.
13106 * Update the X509V3 code to permit the use of an ASN1_ITEM structure
13107 for its ASN1 operations. The old style function pointers still exist
13108 for now but they will eventually go away.
13112 * Merge in replacement ASN1 code from the ASN1 branch. This almost
13113 completely replaces the old ASN1 functionality with a table driven
13114 encoder and decoder which interprets an ASN1_ITEM structure describing
13115 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
13116 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
13117 has also been converted to the new form.
13121 * Change BN_mod_exp_recp so that negative moduli are tolerated
13122 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
13123 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
13124 for negative moduli.
13128 * Fix BN_uadd and BN_usub: Always return non-negative results instead
13129 of not touching the result's sign bit.
13133 * BN_div bugfix: If the result is 0, the sign (res->neg) must not be
13138 * Changed the LHASH code to use prototypes for callbacks, and created
13139 macros to declare and implement thin (optionally static) functions
13140 that provide type-safety and avoid function pointer casting for the
13141 type-specific callbacks.
13145 * Added Kerberos Cipher Suites to be used with TLS, as written in
13147 *Veers Staats <staatsvr@asc.hpc.mil>,
13148 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte*
13150 * Reformat the FAQ so the different questions and answers can be divided
13151 in sections depending on the subject.
13155 * Have the zlib compression code load ZLIB.DLL dynamically under
13160 * New function BN_mod_sqrt for computing square roots modulo a prime
13161 (using the probabilistic Tonelli-Shanks algorithm unless
13162 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
13163 be handled deterministically).
13165 *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
13167 * Make BN_mod_inverse faster by explicitly handling small quotients
13168 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
13169 512 bits], about 30% for larger ones [1024 or 2048 bits].)
13173 * New function BN_kronecker.
13177 * Fix BN_gcd so that it works on negative inputs; the result is
13178 positive unless both parameters are zero.
13179 Previously something reasonably close to an infinite loop was
13180 possible because numbers could be growing instead of shrinking
13181 in the implementation of Euclid's algorithm.
13185 * Fix BN_is_word() and BN_is_one() macros to take into account the
13186 sign of the number in question.
13188 Fix BN_is_word(a,w) to work correctly for w == 0.
13190 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
13191 because its test if the absolute value of 'a' equals 'w'.
13192 Note that BN_abs_is_word does *not* handle w == 0 reliably;
13193 it exists mostly for use in the implementations of BN_is_zero(),
13194 BN_is_one(), and BN_is_word().
13198 * New function BN_swap.
13202 * Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
13203 the exponentiation functions are more likely to produce reasonable
13204 results on negative inputs.
13208 * Change BN_mod_mul so that the result is always non-negative.
13209 Previously, it could be negative if one of the factors was negative;
13210 I don't think anyone really wanted that behaviour.
13214 * Move `BN_mod_...` functions into new file `crypto/bn/bn_mod.c`
13215 (except for exponentiation, which stays in `crypto/bn/bn_exp.c`,
13216 and `BN_mod_mul_reciprocal`, which stays in `crypto/bn/bn_recp.c`)
13217 and add new functions:
13226 BN_mod_lshift1_quick
13228 BN_mod_lshift_quick
13230 These functions always generate non-negative results.
13232 `BN_nnmod` otherwise is `like BN_mod` (if `BN_mod` computes a remainder `r`
13233 such that `|m| < r < 0`, `BN_nnmod` will output `rem + |m|` instead).
13235 `BN_mod_XXX_quick(r, a, [b,] m)` generates the same result as
13236 `BN_mod_XXX(r, a, [b,] m, ctx)`, but requires that `a` [and `b`]
13237 be reduced modulo `m`.
13239 *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
13242 The following entry accidentally appeared in the CHANGES file
13243 distributed with OpenSSL 0.9.7. The modifications described in
13244 it do *not* apply to OpenSSL 0.9.7.
13246 * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
13247 was actually never needed) and in BN_mul(). The removal in BN_mul()
13248 required a small change in bn_mul_part_recursive() and the addition
13249 of the functions bn_cmp_part_words(), bn_sub_part_words() and
13250 bn_add_part_words(), which do the same thing as bn_cmp_words(),
13251 bn_sub_words() and bn_add_words() except they take arrays with
13257 * In 'openssl passwd', verify passwords read from the terminal
13258 unless the '-salt' option is used (which usually means that
13259 verification would just waste user's time since the resulting
13260 hash is going to be compared with some given password hash)
13261 or the new '-noverify' option is used.
13263 This is an incompatible change, but it does not affect
13264 non-interactive use of 'openssl passwd' (passwords on the command
13265 line, '-stdin' option, '-in ...' option) and thus should not
13266 cause any problems.
13270 * Remove all references to RSAref, since there's no more need for it.
13274 * Make DSO load along a path given through an environment variable
13275 (SHLIB_PATH) with shl_load().
13279 * Constify the ENGINE code as a result of BIGNUM constification.
13280 Also constify the RSA code and most things related to it. In a
13281 few places, most notable in the depth of the ASN.1 code, ugly
13282 casts back to non-const were required (to be solved at a later
13287 * Make it so the openssl application has all engines loaded by default.
13291 * Constify the BIGNUM routines a little more.
13295 * Add the following functions:
13297 ENGINE_load_cswift()
13299 ENGINE_load_atalla()
13300 ENGINE_load_nuron()
13301 ENGINE_load_builtin_engines()
13303 That way, an application can itself choose if external engines that
13304 are built-in in OpenSSL shall ever be used or not. The benefit is
13305 that applications won't have to be linked with libdl or other dso
13306 libraries unless it's really needed.
13308 Changed 'openssl engine' to load all engines on demand.
13309 Changed the engine header files to avoid the duplication of some
13310 declarations (they differed!).
13314 * 'openssl engine' can now list capabilities.
13318 * Better error reporting in 'openssl engine'.
13322 * Never call load_dh_param(NULL) in s_server.
13326 * Add engine application. It can currently list engines by name and
13327 identity, and test if they are actually available.
13331 * Improve RPM specification file by forcing symbolic linking and making
13332 sure the installed documentation is also owned by root.root.
13334 *Damien Miller <djm@mindrot.org>*
13336 * Give the OpenSSL applications more possibilities to make use of
13337 keys (public as well as private) handled by engines.
13341 * Add OCSP code that comes from CertCo.
13345 * Add VMS support for the Rijndael code.
13349 * Added untested support for Nuron crypto accelerator.
13353 * Add support for external cryptographic devices. This code was
13354 previously distributed separately as the "engine" branch.
13356 *Geoff Thorpe, Richard Levitte*
13358 * Rework the filename-translation in the DSO code. It is now possible to
13359 have far greater control over how a "name" is turned into a filename
13360 depending on the operating environment and any oddities about the
13361 different shared library filenames on each system.
13365 * Support threads on FreeBSD-elf in Configure.
13369 * Fix for SHA1 assembly problem with MASM: it produces
13370 warnings about corrupt line number information when assembling
13371 with debugging information. This is caused by the overlapping
13374 *Bernd Matthes <mainbug@celocom.de>, Steve Henson*
13377 NCONF_get_number() has no error checking at all. As a replacement,
13378 NCONF_get_number_e() is defined (`_e` for "error checking") and is
13379 promoted strongly. The old NCONF_get_number is kept around for
13380 binary backward compatibility.
13381 Make it possible for methods to load from something other than a BIO,
13382 by providing a function pointer that is given a name instead of a BIO.
13383 For example, this could be used to load configuration data from an
13388 * Fix for non blocking accept BIOs. Added new I/O special reason
13389 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
13390 with non blocking I/O was not possible because no retry code was
13391 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
13396 * Added the beginnings of Rijndael support.
13400 * Fix for bug in DirectoryString mask setting. Add support for
13401 X509_NAME_print_ex() in 'req' and X509_print_ex() function
13402 to allow certificate printing to more controllable, additional
13403 'certopt' option to 'x509' to allow new printing options to be
13408 * Clean old EAY MD5 hack from e_os.h.
13412 ### Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
13414 * Fix null-pointer assignment in do_change_cipher_spec() revealed
13415 by using the Codenomicon TLS Test Tool ([CVE-2004-0079])
13417 *Joe Orton, Steve Henson*
13419 ### Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
13421 * Fix additional bug revealed by the NISCC test suite:
13423 Stop bug triggering large recursion when presented with
13424 certain ASN.1 tags ([CVE-2003-0851])
13428 ### Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
13430 * Fix various bugs revealed by running the NISCC test suite:
13432 Stop out of bounds reads in the ASN1 code when presented with
13433 invalid tags (CVE-2003-0543 and CVE-2003-0544).
13435 If verify callback ignores invalid public key errors don't try to check
13436 certificate signature with the NULL public key.
13440 * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
13441 if the server requested one: as stated in TLS 1.0 and SSL 3.0
13446 * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
13447 extra data after the compression methods not only for TLS 1.0
13448 but also for SSL 3.0 (as required by the specification).
13450 *Bodo Moeller; problem pointed out by Matthias Loepfe*
13452 * Change X509_certificate_type() to mark the key as exported/exportable
13453 when it's 512 *bits* long, not 512 bytes.
13457 ### Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
13459 * Countermeasure against the Klima-Pokorny-Rosa extension of
13460 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
13461 a protocol version number mismatch like a decryption error
13462 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
13466 * Turn on RSA blinding by default in the default implementation
13467 to avoid a timing attack. Applications that don't want it can call
13468 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
13469 They would be ill-advised to do so in most cases.
13471 *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
13473 * Change RSA blinding code so that it works when the PRNG is not
13474 seeded (in this case, the secret RSA exponent is abused as
13475 an unpredictable seed -- if it is not unpredictable, there
13476 is no point in blinding anyway). Make RSA blinding thread-safe
13477 by remembering the creator's thread ID in rsa->blinding and
13478 having all other threads use local one-time blinding factors
13479 (this requires more computation than sharing rsa->blinding, but
13480 avoids excessive locking; and if an RSA object is not shared
13481 between threads, blinding will still be very fast).
13485 ### Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
13487 * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
13488 via timing by performing a MAC computation even if incorrect
13489 block cipher padding has been found. This is a countermeasure
13490 against active attacks where the attacker has to distinguish
13491 between bad padding and a MAC verification error. ([CVE-2003-0078])
13493 *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
13494 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
13495 Martin Vuagnoux (EPFL, Ilion)*
13497 ### Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
13499 * New function OPENSSL_cleanse(), which is used to cleanse a section of
13500 memory from its contents. This is done with a counter that will
13501 place alternating values in each byte. This can be used to solve
13502 two issues: 1) the removal of calls to memset() by highly optimizing
13503 compilers, and 2) cleansing with other values than 0, since those can
13504 be read through on certain media, for example a swap space on disk.
13508 * Bugfix: client side session caching did not work with external caching,
13509 because the session->cipher setting was not restored when reloading
13510 from the external cache. This problem was masked, when
13511 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
13512 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
13516 * Fix client_certificate (ssl/s2_clnt.c): The permissible total
13517 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
13519 *Zeev Lieber <zeev-l@yahoo.com>*
13521 * Undo an undocumented change introduced in 0.9.6e which caused
13522 repeated calls to OpenSSL_add_all_ciphers() and
13523 OpenSSL_add_all_digests() to be ignored, even after calling
13528 * Change the default configuration reader to deal with last line not
13529 being properly terminated.
13533 * Change X509_NAME_cmp() so it applies the special rules on handling
13534 DN values that are of type PrintableString, as well as RDNs of type
13535 emailAddress where the value has the type ia5String.
13537 *stefank@valicert.com via Richard Levitte*
13539 * Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
13540 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
13541 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
13542 the bitwise-OR of the two for use by the majority of applications
13543 wanting this behaviour, and update the docs. The documented
13544 behaviour and actual behaviour were inconsistent and had been
13545 changing anyway, so this is more a bug-fix than a behavioural
13548 *Geoff Thorpe, diagnosed by Nadav Har'El*
13550 * Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
13551 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
13555 * Fix initialization code race conditions in
13556 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
13557 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
13558 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
13559 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
13560 ssl2_get_cipher_by_char(),
13561 ssl3_get_cipher_by_char().
13563 *Patrick McCormick <patrick@tellme.com>, Bodo Moeller*
13565 * Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
13566 the cached sessions are flushed, as the remove_cb() might use ex_data
13567 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
13568 (see [openssl.org #212]).
13570 *Geoff Thorpe, Lutz Jaenicke*
13572 * Fix typo in OBJ_txt2obj which incorrectly passed the content
13573 length, instead of the encoding length to d2i_ASN1_OBJECT.
13577 ### Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
13579 * [In 0.9.6g-engine release:]
13580 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use `_stdcall`).
13582 *Lynn Gazis <lgazis@rainbow.com>*
13584 ### Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
13586 * Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
13587 and get fix the header length calculation.
13588 *Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
13589 Alon Kantor <alonk@checkpoint.com> (and others), Steve Henson*
13591 * Use proper error handling instead of 'assertions' in buffer
13592 overflow checks added in 0.9.6e. This prevents DoS (the
13593 assertions could call abort()).
13595 *Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller*
13597 ### Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
13599 * Add various sanity checks to asn1_get_length() to reject
13600 the ASN1 length bytes if they exceed sizeof(long), will appear
13601 negative or the content length exceeds the length of the
13604 *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
13606 * Fix cipher selection routines: ciphers without encryption had no flags
13607 for the cipher strength set and where therefore not handled correctly
13608 by the selection routines (PR #130).
13612 * Fix EVP_dsa_sha macro.
13617 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
13618 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
13619 that was added in OpenSSL 0.9.6d.
13621 As the countermeasure turned out to be incompatible with some
13622 broken SSL implementations, the new option is part of SSL_OP_ALL.
13623 SSL_OP_ALL is usually employed when compatibility with weird SSL
13624 implementations is desired (e.g. '-bugs' option to 's_client' and
13625 's_server'), so the new option is automatically set in many
13630 * Changes in security patch:
13632 Changes marked "(CHATS)" were sponsored by the Defense Advanced
13633 Research Projects Agency (DARPA) and Air Force Research Laboratory,
13634 Air Force Materiel Command, USAF, under agreement number
13637 * Add various sanity checks to asn1_get_length() to reject
13638 the ASN1 length bytes if they exceed sizeof(long), will appear
13639 negative or the content length exceeds the length of the
13640 supplied buffer. ([CVE-2002-0659])
13642 *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
13644 * Assertions for various potential buffer overflows, not known to
13645 happen in practice.
13647 *Ben Laurie (CHATS)*
13649 * Various temporary buffers to hold ASCII versions of integers were
13650 too small for 64 bit platforms. ([CVE-2002-0655])
13651 *Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>*
13653 * Remote buffer overflow in SSL3 protocol - an attacker could
13654 supply an oversized session ID to a client. ([CVE-2002-0656])
13656 *Ben Laurie (CHATS)*
13658 * Remote buffer overflow in SSL2 protocol - an attacker could
13659 supply an oversized client master key. ([CVE-2002-0656])
13661 *Ben Laurie (CHATS)*
13663 ### Changes between 0.9.6c and 0.9.6d [9 May 2002]
13665 * Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
13666 encoded as NULL) with id-dsa-with-sha1.
13668 *Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller*
13670 * Check various `X509_...()` return values in apps/req.c.
13672 *Nils Larsch <nla@trustcenter.de>*
13674 * Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
13675 an end-of-file condition would erroneously be flagged, when the CRLF
13676 was just at the end of a processed block. The bug was discovered when
13677 processing data through a buffering memory BIO handing the data to a
13678 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
13679 <ptsekov@syntrex.com> and Nedelcho Stanev.
13683 * Implement a countermeasure against a vulnerability recently found
13684 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
13685 before application data chunks to avoid the use of known IVs
13686 with data potentially chosen by the attacker.
13690 * Fix length checks in ssl3_get_client_hello().
13694 * TLS/SSL library bugfix: use s->s3->in_read_app_data differently
13695 to prevent ssl3_read_internal() from incorrectly assuming that
13696 ssl3_read_bytes() found application data while handshake
13697 processing was enabled when in fact s->s3->in_read_app_data was
13698 merely automatically cleared during the initial handshake.
13700 *Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>*
13702 * Fix object definitions for Private and Enterprise: they were not
13703 recognized in their shortname (=lowercase) representation. Extend
13704 obj_dat.pl to issue an error when using undefined keywords instead
13705 of silently ignoring the problem (Svenning Sorensen
13706 <sss@sss.dnsalias.net>).
13710 * Fix DH_generate_parameters() so that it works for 'non-standard'
13711 generators, i.e. generators other than 2 and 5. (Previously, the
13712 code did not properly initialise the 'add' and 'rem' values to
13713 BN_generate_prime().)
13715 In the new general case, we do not insist that 'generator' is
13716 actually a primitive root: This requirement is rather pointless;
13717 a generator of the order-q subgroup is just as good, if not
13722 * Map new X509 verification errors to alerts. Discovered and submitted by
13723 Tom Wu <tom@arcot.com>.
13727 * Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
13728 returning non-zero before the data has been completely received
13729 when using non-blocking I/O.
13731 *Bodo Moeller; problem pointed out by John Hughes*
13733 * Some of the ciphers missed the strength entry (SSL_LOW etc).
13735 *Ben Laurie, Lutz Jaenicke*
13737 * Fix bug in SSL_clear(): bad sessions were not removed (found by
13738 Yoram Zahavi <YoramZ@gilian.com>).
13742 * Add information about CygWin 1.3 and on, and preserve proper
13743 configuration for the versions before that.
13745 *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
13747 * Make removal from session cache (SSL_CTX_remove_session()) more robust:
13748 check whether we deal with a copy of a session and do not delete from
13749 the cache in this case. Problem reported by "Izhar Shoshani Levi"
13750 <izhar@checkpoint.com>.
13754 * Do not store session data into the internal session cache, if it
13755 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
13756 flag is set). Proposed by Aslam <aslam@funk.com>.
13760 * Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
13765 * [In 0.9.6d-engine release:]
13766 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
13768 *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
13770 * Add the configuration target linux-s390x.
13772 *Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte*
13774 * The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
13775 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
13776 variable as an indication that a ClientHello message has been
13777 received. As the flag value will be lost between multiple
13778 invocations of ssl3_accept when using non-blocking I/O, the
13779 function may not be aware that a handshake has actually taken
13780 place, thus preventing a new session from being added to the
13783 To avoid this problem, we now set s->new_session to 2 instead of
13784 using a local variable.
13786 *Lutz Jaenicke, Bodo Moeller*
13788 * Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
13789 if the SSL_R_LENGTH_MISMATCH error is detected.
13791 *Geoff Thorpe, Bodo Moeller*
13793 * New 'shared_ldflag' column in Configure platform table.
13797 * Fix EVP_CIPHER_mode macro.
13799 *"Dan S. Camper" <dan@bti.net>*
13801 * Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
13802 type, we must throw them away by setting rr->length to 0.
13804 *D P Chang <dpc@qualys.com>*
13806 ### Changes between 0.9.6b and 0.9.6c [21 dec 2001]
13808 * Fix BN_rand_range bug pointed out by Dominikus Scherkl
13809 <Dominikus.Scherkl@biodata.com>. (The previous implementation
13810 worked incorrectly for those cases where range = `10..._2` and
13811 `3*range` is two bits longer than range.)
13815 * Only add signing time to PKCS7 structures if it is not already
13820 * Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
13821 OBJ_ld_ce should be OBJ_id_ce.
13822 Also some ip-pda OIDs in crypto/objects/objects.txt were
13823 incorrect (cf. RFC 3039).
13825 *Matt Cooper, Frederic Giudicelli, Bodo Moeller*
13827 * Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
13828 returns early because it has nothing to do.
13830 *Andy Schneider <andy.schneider@bjss.co.uk>*
13832 * [In 0.9.6c-engine release:]
13833 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
13835 *Andy Schneider <andy.schneider@bjss.co.uk>*
13837 * [In 0.9.6c-engine release:]
13838 Add support for Cryptographic Appliance's keyserver technology.
13839 (Use engine 'keyclient')
13841 *Cryptographic Appliances and Geoff Thorpe*
13843 * Add a configuration entry for OS/390 Unix. The C compiler 'c89'
13844 is called via tools/c89.sh because arguments have to be
13845 rearranged (all '-L' options must appear before the first object
13848 *Richard Shapiro <rshapiro@abinitio.com>*
13850 * [In 0.9.6c-engine release:]
13851 Add support for Broadcom crypto accelerator cards, backported
13854 *Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox*
13856 * [In 0.9.6c-engine release:]
13857 Add support for SureWare crypto accelerator cards from
13858 Baltimore Technologies. (Use engine 'sureware')
13860 *Baltimore Technologies and Mark Cox*
13862 * [In 0.9.6c-engine release:]
13863 Add support for crypto accelerator cards from Accelerated
13864 Encryption Processing, www.aep.ie. (Use engine 'aep')
13866 *AEP Inc. and Mark Cox*
13868 * Add a configuration entry for gcc on UnixWare.
13870 *Gary Benson <gbenson@redhat.com>*
13872 * Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
13873 messages are stored in a single piece (fixed-length part and
13874 variable-length part combined) and fix various bugs found on the way.
13878 * Disable caching in BIO_gethostbyname(), directly use gethostbyname()
13879 instead. BIO_gethostbyname() does not know what timeouts are
13880 appropriate, so entries would stay in cache even when they have
13882 *Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>*
13884 * Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
13885 faced with a pathologically small ClientHello fragment that does
13886 not contain client_version: Instead of aborting with an error,
13887 simply choose the highest available protocol version (i.e.,
13888 TLS 1.0 unless it is disabled). In practice, ClientHello
13889 messages are never sent like this, but this change gives us
13890 strictly correct behaviour at least for TLS.
13894 * Fix SSL handshake functions and SSL_clear() such that SSL_clear()
13895 never resets s->method to s->ctx->method when called from within
13896 one of the SSL handshake functions.
13898 *Bodo Moeller; problem pointed out by Niko Baric*
13900 * In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
13901 (sent using the client's version number) if client_version is
13902 smaller than the protocol version in use. Also change
13903 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
13904 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
13905 the client will at least see that alert.
13909 * Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
13914 * Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
13915 client receives HelloRequest while in a handshake.
13917 *Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>*
13919 * Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
13920 should end in 'break', not 'goto end' which circumvents various
13921 cleanups done in state SSL_ST_OK. But session related stuff
13922 must be disabled for SSL_ST_OK in the case that we just sent a
13925 Also avoid some overhead by not calling ssl_init_wbio_buffer()
13926 before just sending a HelloRequest.
13928 *Bodo Moeller, Eric Rescorla <ekr@rtfm.com>*
13930 * Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
13931 reveal whether illegal block cipher padding was found or a MAC
13932 verification error occurred. (Neither SSLerr() codes nor alerts
13933 are directly visible to potential attackers, but the information
13934 may leak via logfiles.)
13936 Similar changes are not required for the SSL 2.0 implementation
13937 because the number of padding bytes is sent in clear for SSL 2.0,
13938 and the extra bytes are just ignored. However ssl/s2_pkt.c
13939 failed to verify that the purported number of padding bytes is in
13944 * Add OpenUNIX-8 support including shared libraries
13945 (Boyd Lynn Gerber <gerberb@zenez.com>).
13949 * Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
13950 'wristwatch attack' using huge encoding parameters (cf.
13951 James H. Manger's CRYPTO 2001 paper). Note that the
13952 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
13953 encoding parameters and hence was not vulnerable.
13957 * BN_sqr() bug fix.
13959 *Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>*
13961 * Rabin-Miller test analyses assume uniformly distributed witnesses,
13962 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
13963 followed by modular reduction.
13965 *Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>*
13967 * Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
13968 equivalent based on BN_pseudo_rand() instead of BN_rand().
13972 * s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
13973 This function was broken, as the check for a new client hello message
13974 to handle SGC did not allow these large messages.
13975 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
13979 * Add alert descriptions for TLSv1 to `SSL_alert_desc_string[_long]()`.
13983 * Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
13984 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
13988 * Rework the configuration and shared library support for Tru64 Unix.
13989 The configuration part makes use of modern compiler features and
13990 still retains old compiler behavior for those that run older versions
13991 of the OS. The shared library support part includes a variant that
13992 uses the RPATH feature, and is available through the special
13993 configuration target "alpha-cc-rpath", which will never be selected
13996 *Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte*
13998 * In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
13999 with the same message size as in ssl3_get_certificate_request().
14000 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
14001 messages might inadvertently be reject as too long.
14003 *Petr Lampa <lampa@fee.vutbr.cz>*
14005 * Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
14009 * Modified SSL library such that the verify_callback that has been set
14010 specifically for an SSL object with SSL_set_verify() is actually being
14011 used. Before the change, a verify_callback set with this function was
14012 ignored and the verify_callback() set in the SSL_CTX at the time of
14013 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
14014 to allow the necessary settings.
14018 * Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
14019 explicitly to NULL, as at least on Solaris 8 this seems not always to be
14020 done automatically (in contradiction to the requirements of the C
14021 standard). This made problems when used from OpenSSH.
14025 * In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
14026 dh->length and always used
14028 BN_rand_range(priv_key, dh->p).
14030 BN_rand_range() is not necessary for Diffie-Hellman, and this
14031 specific range makes Diffie-Hellman unnecessarily inefficient if
14032 dh->length (recommended exponent length) is much smaller than the
14033 length of dh->p. We could use BN_rand_range() if the order of
14034 the subgroup was stored in the DH structure, but we only have
14039 BN_rand(priv_key, l, ...)
14041 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
14048 RSA_eay_public_encrypt
14049 RSA_eay_private_decrypt
14050 RSA_eay_private_encrypt (signing)
14051 RSA_eay_public_decrypt (signature verification)
14053 (default implementations for RSA_public_encrypt,
14054 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
14055 always reject numbers >= n.
14059 * In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
14060 to synchronize access to 'locking_thread'. This is necessary on
14061 systems where access to 'locking_thread' (an 'unsigned long'
14062 variable) is not atomic.
14066 * In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
14067 *before* setting the 'crypto_lock_rand' flag. The previous code had
14068 a race condition if 0 is a valid thread ID.
14070 *Travis Vitek <vitek@roguewave.com>*
14072 * Add support for shared libraries under Irix.
14074 *Albert Chin-A-Young <china@thewrittenword.com>*
14076 * Add configuration option to build on Linux on both big-endian and
14077 little-endian MIPS.
14079 *Ralf Baechle <ralf@uni-koblenz.de>*
14081 * Add the possibility to create shared libraries on HP-UX.
14085 ### Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
14087 * Change ssleay_rand_bytes (crypto/rand/md_rand.c)
14088 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
14089 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
14090 PRNG state recovery was possible based on the output of
14091 one PRNG request appropriately sized to gain knowledge on
14092 'md' followed by enough consecutive 1-byte PRNG requests
14093 to traverse all of 'state'.
14095 1. When updating 'md_local' (the current thread's copy of 'md')
14096 during PRNG output generation, hash all of the previous
14097 'md_local' value, not just the half used for PRNG output.
14099 2. Make the number of bytes from 'state' included into the hash
14100 independent from the number of PRNG bytes requested.
14102 The first measure alone would be sufficient to avoid
14103 Markku-Juhani's attack. (Actually it had never occurred
14104 to me that the half of 'md_local' used for chaining was the
14105 half from which PRNG output bytes were taken -- I had always
14106 assumed that the secret half would be used.) The second
14107 measure makes sure that additional data from 'state' is never
14108 mixed into 'md_local' in small portions; this heuristically
14109 further strengthens the PRNG.
14113 * Fix crypto/bn/asm/mips3.s.
14117 * When only the key is given to "enc", the IV is undefined. Print out
14118 an error message in this case.
14122 * Handle special case when X509_NAME is empty in X509 printing routines.
14126 * In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
14127 positive and less than q.
14131 * Don't change `*pointer` in CRYPTO_add_lock() is add_lock_callback is
14132 used: it isn't thread safe and the add_lock_callback should handle
14135 *Paul Rose <Paul.Rose@bridge.com>*
14137 * Verify that incoming data obeys the block size in
14138 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
14144 *Ulf Möller, Bodo Möller*
14146 * The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
14147 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
14148 when fixing the server behaviour for backwards-compatible 'client
14149 hello' messages. (Note that the attack is impractical against
14150 SSL 3.0 and TLS 1.0 anyway because length and version checking
14151 means that the probability of guessing a valid ciphertext is
14152 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
14155 Before 0.9.5, the countermeasure (hide the error by generating a
14156 random 'decryption result') did not work properly because
14157 ERR_clear_error() was missing, meaning that SSL_get_error() would
14158 detect the supposedly ignored error.
14160 Both problems are now fixed.
14164 * In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
14165 (previously it was 1024).
14169 * Fix for compatibility mode trust settings: ignore trust settings
14170 unless some valid trust or reject settings are present.
14174 * Fix for blowfish EVP: its a variable length cipher.
14178 * Fix various bugs related to DSA S/MIME verification. Handle missing
14179 parameters in DSA public key structures and return an error in the
14180 DSA routines if parameters are absent.
14184 * In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
14185 in the current directory if neither $RANDFILE nor $HOME was set.
14186 RAND_file_name() in 0.9.6a returned NULL in this case. This has
14187 caused some confusion to Windows users who haven't defined $HOME.
14188 Thus RAND_file_name() is changed again: e_os.h can define a
14189 DEFAULT_HOME, which will be used if $HOME is not set.
14190 For Windows, we use "C:"; on other platforms, we still require
14191 environment variables.
14193 * Move 'if (!initialized) RAND_poll()' into regions protected by
14194 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
14195 having multiple threads call RAND_poll() concurrently.
14199 * In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
14200 combination of a flag and a thread ID variable.
14201 Otherwise while one thread is in ssleay_rand_bytes (which sets the
14202 flag), *other* threads can enter ssleay_add_bytes without obeying
14203 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
14204 that they do not hold after the first thread unsets add_do_not_lock).
14208 * Change bctest again: '-x' expressions are not available in all
14209 versions of 'test'.
14213 ### Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
14215 * Fix a couple of memory leaks in PKCS7_dataDecode()
14217 *Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>*
14219 * Change Configure and Makefiles to provide EXE_EXT, which will contain
14220 the default extension for executables, if any. Also, make the perl
14221 scripts that use symlink() to test if it really exists and use "cp"
14222 if it doesn't. All this made OpenSSL compilable and installable in
14227 * Fix for asn1_GetSequence() for indefinite length constructed data.
14228 If SEQUENCE is length is indefinite just set c->slen to the total
14229 amount of data available.
14231 *Steve Henson, reported by shige@FreeBSD.org*
14233 *This change does not apply to 0.9.7.*
14235 * Change bctest to avoid here-documents inside command substitution
14236 (workaround for FreeBSD /bin/sh bug).
14237 For compatibility with Ultrix, avoid shell functions (introduced
14238 in the bctest version that searches along $PATH).
14242 * Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
14243 with des_encrypt() defined on some operating systems, like Solaris
14248 * Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
14249 On the Importance of Eliminating Errors in Cryptographic
14250 Computations, J. Cryptology 14 (2001) 2, 101-119,
14251 <http://theory.stanford.edu/~dabo/papers/faults.ps.gz>).
14255 * MIPS assembler BIGNUM division bug fix.
14259 * Disabled incorrect Alpha assembler code.
14263 * Fix PKCS#7 decode routines so they correctly update the length
14264 after reading an EOC for the EXPLICIT tag.
14268 *This change does not apply to 0.9.7.*
14270 * Fix bug in PKCS#12 key generation routines. This was triggered
14271 if a 3DES key was generated with a 0 initial byte. Include
14272 PKCS12_BROKEN_KEYGEN compilation option to retain the old
14273 (but broken) behaviour.
14277 * Enhance bctest to search for a working bc along $PATH and print
14280 *Tim Rice <tim@multitalents.net> via Richard Levitte*
14282 * Fix memory leaks in err.c: free err_data string if necessary;
14283 don't write to the wrong index in ERR_set_error_data.
14287 * Implement ssl23_peek (analogous to ssl23_read), which previously
14292 * Replace rdtsc with `_emit` statements for VC++ version 5.
14294 *Jeremy Cooper <jeremy@baymoo.org>*
14296 * Make it possible to reuse SSLv2 sessions.
14300 * In copy_email() check for >= 0 as a return value for
14301 X509_NAME_get_index_by_NID() since 0 is a valid index.
14303 *Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>*
14305 * Avoid coredump with unsupported or invalid public keys by checking if
14306 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
14307 PKCS7_verify() fails with non detached data.
14311 * Don't use getenv in library functions when run as setuid/setgid.
14312 New function OPENSSL_issetugid().
14316 * Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
14317 due to incorrect handling of multi-threading:
14319 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
14321 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
14323 3. Count how many times MemCheck_off() has been called so that
14324 nested use can be treated correctly. This also avoids
14325 inband-signalling in the previous code (which relied on the
14326 assumption that thread ID 0 is impossible).
14330 * Add "-rand" option also to s_client and s_server.
14334 * Fix CPU detection on Irix 6.x.
14335 *Kurt Hockenbury <khockenb@stevens-tech.edu> and
14336 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
14338 * Fix X509_NAME bug which produced incorrect encoding if X509_NAME
14343 *This change does not apply to 0.9.7.*
14345 * Use the cached encoding of an X509_NAME structure rather than
14346 copying it. This is apparently the reason for the libsafe "errors"
14347 but the code is actually correct.
14351 * Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
14352 Bleichenbacher's DSA attack.
14353 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
14354 to be set and top=0 forces the highest bit to be set; top=-1 is new
14355 and leaves the highest bit random.
14357 *Ulf Moeller, Bodo Moeller*
14359 * In the `NCONF_...`-based implementations for `CONF_...` queries
14360 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
14361 a temporary CONF structure with the data component set to NULL
14362 (which gives segmentation faults in lh_retrieve).
14363 Instead, use NULL for the CONF pointer in CONF_get_string and
14364 CONF_get_number (which may use environment variables) and directly
14365 return NULL from CONF_get_section.
14369 * Fix potential buffer overrun for EBCDIC.
14373 * Tolerate nonRepudiation as being valid for S/MIME signing and certSign
14374 keyUsage if basicConstraints absent for a CA.
14378 * Make SMIME_write_PKCS7() write mail header values with a format that
14379 is more generally accepted (no spaces before the semicolon), since
14380 some programs can't parse those values properly otherwise. Also make
14381 sure BIO's that break lines after each write do not create invalid
14386 * Make the CRL encoding routines work with empty SEQUENCE OF. The
14387 macros previously used would not encode an empty SEQUENCE OF
14388 and break the signature.
14392 *This change does not apply to 0.9.7.*
14394 * Zero the premaster secret after deriving the master secret in
14399 * Add some EVP_add_digest_alias registrations (as found in
14400 OpenSSL_add_all_digests()) to SSL_library_init()
14401 aka OpenSSL_add_ssl_algorithms(). This provides improved
14402 compatibility with peers using X.509 certificates
14403 with unconventional AlgorithmIdentifier OIDs.
14407 * Fix for Irix with NO_ASM.
14409 *"Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
14411 * ./config script fixes.
14413 *Ulf Moeller, Richard Levitte*
14415 * Fix 'openssl passwd -1'.
14419 * Change PKCS12_key_gen_asc() so it can cope with non null
14420 terminated strings whose length is passed in the passlen
14421 parameter, for example from PEM callbacks. This was done
14422 by adding an extra length parameter to asc2uni().
14424 *Steve Henson, reported by <oddissey@samsung.co.kr>*
14426 * Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
14427 call failed, free the DSA structure.
14431 * Fix to uni2asc() to cope with zero length Unicode strings.
14432 These are present in some PKCS#12 files.
14436 * Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
14437 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
14438 when writing a 32767 byte record.
14440 *Bodo Moeller; problem reported by Eric Day <eday@concentric.net>*
14442 * In `RSA_eay_public_{en,ed}crypt` and RSA_eay_mod_exp (rsa_eay.c),
14443 obtain lock CRYPTO_LOCK_RSA before setting `rsa->_method_mod_{n,p,q}`.
14445 (RSA objects have a reference count access to which is protected
14446 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
14447 so they are meant to be shared between threads.)
14448 *Bodo Moeller, Geoff Thorpe; original patch submitted by
14449 "Reddie, Steven" <Steven.Reddie@ca.com>*
14451 * Fix a deadlock in CRYPTO_mem_leaks().
14455 * Use better test patterns in bntest.
14459 * rand_win.c fix for Borland C.
14463 * BN_rshift bugfix for n == 0.
14467 * Add a 'bctest' script that checks for some known 'bc' bugs
14468 so that 'make test' does not abort just because 'bc' is broken.
14472 * Store verify_result within SSL_SESSION also for client side to
14473 avoid potential security hole. (Re-used sessions on the client side
14474 always resulted in verify_result==X509_V_OK, not using the original
14475 result of the server certificate verification.)
14479 * Fix ssl3_pending: If the record in s->s3->rrec is not of type
14480 SSL3_RT_APPLICATION_DATA, return 0.
14481 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
14486 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
14487 releases, have been re-implemented by renaming the previous
14488 implementations of ssl2_read and ssl3_read to ssl2_read_internal
14489 and ssl3_read_internal, respectively, and adding 'peek' parameters
14490 to them. The new ssl[23]_{read,peek} functions are calls to
14491 ssl[23]_read_internal with the 'peek' flag set appropriately.
14492 A 'peek' parameter has also been added to ssl3_read_bytes, which
14493 does the actual work for ssl3_read_internal.
14497 * Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
14498 the method-specific "init()" handler. Also clean up ex_data after
14499 calling the method-specific "finish()" handler. Previously, this was
14500 happening the other way round.
14504 * Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
14505 The previous value, 12, was not always sufficient for BN_mod_exp().
14509 * Make sure that shared libraries get the internal name engine with
14510 the full version number and not just 0. This should mark the
14511 shared libraries as not backward compatible. Of course, this should
14512 be changed again when we can guarantee backward binary compatibility.
14516 * Fix typo in get_cert_by_subject() in by_dir.c
14518 *Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>*
14520 * Rework the system to generate shared libraries:
14522 - Make note of the expected extension for the shared libraries and
14523 if there is a need for symbolic links from for example libcrypto.so.0
14524 to libcrypto.so.0.9.7. There is extended info in Configure for
14527 - Make as few rebuilds of the shared libraries as possible.
14529 - Still avoid linking the OpenSSL programs with the shared libraries.
14531 - When installing, install the shared libraries separately from the
14536 * Fix SSL_CTX_set_read_ahead macro to actually use its argument.
14538 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
14539 and not in SSL_clear because the latter is also used by the
14540 accept/connect functions; previously, the settings made by
14541 SSL_set_read_ahead would be lost during the handshake.
14543 *Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>*
14545 * Correct util/mkdef.pl to be selective about disabled algorithms.
14546 Previously, it would create entries for disabled algorithms no
14551 * Added several new manual pages for SSL_* function.
14555 ### Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
14557 * In ssl23_get_client_hello, generate an error message when faced
14558 with an initial SSL 3.0/TLS record that is too small to contain the
14559 first two bytes of the ClientHello message, i.e. client_version.
14560 (Note that this is a pathologic case that probably has never happened
14561 in real life.) The previous approach was to use the version number
14562 from the record header as a substitute; but our protocol choice
14563 should not depend on that one because it is not authenticated
14564 by the Finished messages.
14568 * More robust randomness gathering functions for Windows.
14570 *Jeffrey Altman <jaltman@columbia.edu>*
14572 * For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
14573 not set then we don't setup the error code for issuer check errors
14574 to avoid possibly overwriting other errors which the callback does
14575 handle. If an application does set the flag then we assume it knows
14576 what it is doing and can handle the new informational codes
14581 * Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
14582 a general "ANY" type, as such it should be able to decode anything
14583 including tagged types. However it didn't check the class so it would
14584 wrongly interpret tagged types in the same way as their universal
14585 counterpart and unknown types were just rejected. Changed so that the
14586 tagged and unknown types are handled in the same way as a SEQUENCE:
14587 that is the encoding is stored intact. There is also a new type
14588 "V_ASN1_OTHER" which is used when the class is not universal, in this
14589 case we have no idea what the actual type is so we just lump them all
14594 * On VMS, stdout may very well lead to a file that is written to
14595 in a record-oriented fashion. That means that every write() will
14596 write a separate record, which will be read separately by the
14597 programs trying to read from it. This can be very confusing.
14599 The solution is to put a BIO filter in the way that will buffer
14600 text until a linefeed is reached, and then write everything a
14601 line at a time, so every record written will be an actual line,
14602 not chunks of lines and not (usually doesn't happen, but I've
14603 seen it once) several lines in one record. BIO_f_linebuffer() is
14606 Currently, it's a VMS-only method, because that's where it has
14607 been tested well enough.
14611 * Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
14612 it can return incorrect results.
14613 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
14614 but it was in 0.9.6-beta[12].)
14618 * Disable the check for content being present when verifying detached
14619 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
14620 include zero length content when signing messages.
14624 * New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
14625 BIO_ctrl (for BIO pairs).
14629 * Add DSO method for VMS.
14633 * Bug fix: Montgomery multiplication could produce results with the
14638 * Add RPM specification openssl.spec and modify it to build three
14639 packages. The default package contains applications, application
14640 documentation and run-time libraries. The devel package contains
14641 include files, static libraries and function documentation. The
14642 doc package contains the contents of the doc directory. The original
14643 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
14647 * Add a large number of documentation files for many SSL routines.
14649 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
14651 * Add a configuration entry for Sony News 4.
14653 *NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>*
14655 * Don't set the two most significant bits to one when generating a
14656 random number < q in the DSA library.
14660 * New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
14661 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
14662 the underlying transport is blocking) if a handshake took place.
14663 (The default behaviour is needed by applications such as s_client
14664 and s_server that use select() to determine when to use SSL_read;
14665 but for applications that know in advance when to expect data, it
14666 just makes things more complicated.)
14670 * Add RAND_egd_bytes(), which gives control over the number of bytes read
14675 * Add a few more EBCDIC conditionals that make `req` and `x509`
14676 work better on such systems.
14678 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
14680 * Add two demo programs for PKCS12_parse() and PKCS12_create().
14681 Update PKCS12_parse() so it copies the friendlyName and the
14682 keyid to the certificates aux info.
14686 * Fix bug in PKCS7_verify() which caused an infinite loop
14687 if there was more than one signature.
14689 *Sven Uszpelkat <su@celocom.de>*
14691 * Major change in util/mkdef.pl to include extra information
14692 about each symbol, as well as presenting variables as well
14693 as functions. This change means that there's n more need
14694 to rebuild the .num files when some algorithms are excluded.
14698 * Allow the verify time to be set by an application,
14699 rather than always using the current time.
14703 * Phase 2 verify code reorganisation. The certificate
14704 verify code now looks up an issuer certificate by a
14705 number of criteria: subject name, authority key id
14706 and key usage. It also verifies self signed certificates
14707 by the same criteria. The main comparison function is
14708 X509_check_issued() which performs these checks.
14710 Lot of changes were necessary in order to support this
14711 without completely rewriting the lookup code.
14713 Authority and subject key identifier are now cached.
14715 The LHASH 'certs' is X509_STORE has now been replaced
14716 by a STACK_OF(X509_OBJECT). This is mainly because an
14717 LHASH can't store or retrieve multiple objects with
14718 the same hash value.
14720 As a result various functions (which were all internal
14721 use only) have changed to handle the new X509_STORE
14722 structure. This will break anything that messed round
14723 with X509_STORE internally.
14725 The functions X509_STORE_add_cert() now checks for an
14726 exact match, rather than just subject name.
14728 The X509_STORE API doesn't directly support the retrieval
14729 of multiple certificates matching a given criteria, however
14730 this can be worked round by performing a lookup first
14731 (which will fill the cache with candidate certificates)
14732 and then examining the cache for matches. This is probably
14733 the best we can do without throwing out X509_LOOKUP
14734 entirely (maybe later...).
14736 The X509_VERIFY_CTX structure has been enhanced considerably.
14738 All certificate lookup operations now go via a get_issuer()
14739 callback. Although this currently uses an X509_STORE it
14740 can be replaced by custom lookups. This is a simple way
14741 to bypass the X509_STORE hackery necessary to make this
14742 work and makes it possible to use more efficient techniques
14743 in future. A very simple version which uses a simple
14744 STACK for its trusted certificate store is also provided
14745 using X509_STORE_CTX_trusted_stack().
14747 The verify_cb() and verify() callbacks now have equivalents
14748 in the X509_STORE_CTX structure.
14750 X509_STORE_CTX also has a 'flags' field which can be used
14751 to customise the verify behaviour.
14755 * Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
14756 excludes S/MIME capabilities.
14760 * When a certificate request is read in keep a copy of the
14761 original encoding of the signed data and use it when outputting
14762 again. Signatures then use the original encoding rather than
14763 a decoded, encoded version which may cause problems if the
14764 request is improperly encoded.
14768 * For consistency with other BIO_puts implementations, call
14769 buffer_write(b, ...) directly in buffer_puts instead of calling
14772 In BIO_puts, increment b->num_write as in BIO_write.
14774 *Peter.Sylvester@EdelWeb.fr*
14776 * Fix BN_mul_word for the case where the word is 0. (We have to use
14777 BN_zero, we may not return a BIGNUM with an array consisting of
14778 words set to zero.)
14782 * Avoid calling abort() from within the library when problems are
14783 detected, except if preprocessor symbols have been defined
14784 (such as REF_CHECK, BN_DEBUG etc.).
14788 * New openssl application 'rsautl'. This utility can be
14789 used for low level RSA operations. DER public key
14790 BIO/fp routines also added.
14794 * New Configure entry and patches for compiling on QNX 4.
14796 *Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>*
14798 * A demo state-machine implementation was sponsored by
14799 Nuron (<http://www.nuron.com/>) and is now available in
14800 demos/state_machine.
14804 * New options added to the 'dgst' utility for signature
14805 generation and verification.
14809 * Unrecognized PKCS#7 content types are now handled via a
14810 catch all ASN1_TYPE structure. This allows unsupported
14811 types to be stored as a "blob" and an application can
14812 encode and decode it manually.
14816 * Fix various signed/unsigned issues to make a_strex.c
14817 compile under VC++.
14819 *Oscar Jacobsson <oscar.jacobsson@celocom.com>*
14821 * ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
14822 length if passed a buffer. ASN1_INTEGER_to_BN failed
14823 if passed a NULL BN and its argument was negative.
14825 *Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>*
14827 * Modification to PKCS#7 encoding routines to output definite
14828 length encoding. Since currently the whole structures are in
14829 memory there's not real point in using indefinite length
14830 constructed encoding. However if OpenSSL is compiled with
14831 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
14835 * Added BIO_vprintf() and BIO_vsnprintf().
14839 * Added more prefixes to parse for in the strings written
14840 through a logging bio, to cover all the levels that are available
14841 through syslog. The prefixes are now:
14843 PANIC, EMERG, EMR => LOG_EMERG
14844 ALERT, ALR => LOG_ALERT
14845 CRIT, CRI => LOG_CRIT
14846 ERROR, ERR => LOG_ERR
14847 WARNING, WARN, WAR => LOG_WARNING
14848 NOTICE, NOTE, NOT => LOG_NOTICE
14849 INFO, INF => LOG_INFO
14850 DEBUG, DBG => LOG_DEBUG
14852 and as before, if none of those prefixes are present at the
14853 beginning of the string, LOG_ERR is chosen.
14855 On Win32, the `LOG_*` levels are mapped according to this:
14857 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
14858 LOG_WARNING => EVENTLOG_WARNING_TYPE
14859 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
14863 * Made it possible to reconfigure with just the configuration
14864 argument "reconf" or "reconfigure". The command line arguments
14865 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
14866 and are retrieved from there when reconfiguring.
14872 *Assar Westerlund <assar@sics.se>, Richard Levitte*
14874 * Add the arguments -CAfile and -CApath to the pkcs12 utility.
14878 * The obj_dat.pl script was messing up the sorting of object
14879 names. The reason was that it compared the quoted version
14880 of strings as a result "OCSP" > "OCSP Signing" because
14881 " > SPACE. Changed script to store unquoted versions of
14882 names and add quotes on output. It was also omitting some
14883 names from the lookup table if they were given a default
14884 value (that is if SN is missing it is given the same
14885 value as LN and vice versa), these are now added on the
14886 grounds that if an object has a name we should be able to
14887 look it up. Finally added warning output when duplicate
14888 short or long names are found.
14892 * Changes needed for Tandem NSK.
14894 *Scott Uroff <scott@xypro.com>*
14896 * Fix SSL 2.0 rollback checking: Due to an off-by-one error in
14897 RSA_padding_check_SSLv23(), special padding was never detected
14898 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
14899 version rollback attacks was not effective.
14901 In s23_clnt.c, don't use special rollback-attack detection padding
14902 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
14903 client; similarly, in s23_srvr.c, don't do the rollback check if
14904 SSL 2.0 is the only protocol enabled in the server.
14908 * Make it possible to get hexdumps of unprintable data with 'openssl
14909 asn1parse'. By implication, the functions ASN1_parse_dump() and
14910 BIO_dump_indent() are added.
14914 * New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
14915 these print out strings and name structures based on various
14916 flags including RFC2253 support and proper handling of
14917 multibyte characters. Added options to the 'x509' utility
14918 to allow the various flags to be set.
14922 * Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
14923 Also change the functions X509_cmp_current_time() and
14924 X509_gmtime_adj() work with an ASN1_TIME structure,
14925 this will enable certificates using GeneralizedTime in validity
14926 dates to be checked.
14930 * Make the NEG_PUBKEY_BUG code (which tolerates invalid
14931 negative public key encodings) on by default,
14932 NO_NEG_PUBKEY_BUG can be set to disable it.
14936 * New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
14937 content octets. An i2c_ASN1_OBJECT is unnecessary because
14938 the encoding can be trivially obtained from the structure.
14942 * crypto/err.c locking bugfix: Use write locks (`CRYPTO_w_[un]lock`),
14943 not read locks (`CRYPTO_r_[un]lock`).
14947 * A first attempt at creating official support for shared
14948 libraries through configuration. I've kept it so the
14949 default is static libraries only, and the OpenSSL programs
14950 are always statically linked for now, but there are
14951 preparations for dynamic linking in place.
14952 This has been tested on Linux and Tru64.
14956 * Randomness polling function for Win9x, as described in:
14957 Peter Gutmann, Software Generation of Practically Strong
14962 * Fix so PRNG is seeded in req if using an already existing
14967 * New options to smime application. -inform and -outform
14968 allow alternative formats for the S/MIME message including
14969 PEM and DER. The -content option allows the content to be
14970 specified separately. This should allow things like Netscape
14971 form signing output easier to verify.
14975 * Fix the ASN1 encoding of tags using the 'long form'.
14979 * New ASN1 functions, `i2c_*` and `c2i_*` for INTEGER and BIT
14980 STRING types. These convert content octets to and from the
14981 underlying type. The actual tag and length octets are
14982 already assumed to have been read in and checked. These
14983 are needed because all other string types have virtually
14984 identical handling apart from the tag. By having versions
14985 of the ASN1 functions that just operate on content octets
14986 IMPLICIT tagging can be handled properly. It also allows
14987 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
14988 and ASN1_INTEGER are identical apart from the tag.
14992 * Change the handling of OID objects as follows:
14994 - New object identifiers are inserted in objects.txt, following
14995 the syntax given in [crypto/objects/README.md](crypto/objects/README.md).
14996 - objects.pl is used to process obj_mac.num and create a new
14998 - obj_dat.pl is used to create a new obj_dat.h, using the data in
15001 This is currently kind of a hack, and the perl code in objects.pl
15002 isn't very elegant, but it works as I intended. The simplest way
15003 to check that it worked correctly is to look in obj_dat.h and
15004 check the array nid_objs and make sure the objects haven't moved
15005 around (this is important!). Additions are OK, as well as
15006 consistent name changes.
15010 * Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
15014 * Addition of the command line parameter '-rand file' to 'openssl req'.
15015 The given file adds to whatever has already been seeded into the
15016 random pool through the RANDFILE configuration file option or
15017 environment variable, or the default random state file.
15021 * mkstack.pl now sorts each macro group into lexical order.
15022 Previously the output order depended on the order the files
15023 appeared in the directory, resulting in needless rewriting
15028 * Patches to make OpenSSL compile under Win32 again. Mostly
15029 work arounds for the VC++ problem that it treats func() as
15030 func(void). Also stripped out the parts of mkdef.pl that
15031 added extra typesafe functions: these no longer exist.
15035 * Reorganisation of the stack code. The macros are now all
15036 collected in safestack.h . Each macro is defined in terms of
15037 a "stack macro" of the form `SKM_<name>(type, a, b)`. The
15038 DEBUG_SAFESTACK is now handled in terms of function casts,
15039 this has the advantage of retaining type safety without the
15040 use of additional functions. If DEBUG_SAFESTACK is not defined
15041 then the non typesafe macros are used instead. Also modified the
15042 mkstack.pl script to handle the new form. Needs testing to see
15043 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
15044 the default if no major problems. Similar behaviour for ASN1_SET_OF
15045 and PKCS12_STACK_OF.
15049 * When some versions of IIS use the 'NET' form of private key the
15050 key derivation algorithm is different. Normally MD5(password) is
15051 used as a 128 bit RC4 key. In the modified case
15052 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
15053 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
15054 as the old Netscape_RSA functions except they have an additional
15055 'sgckey' parameter which uses the modified algorithm. Also added
15056 an -sgckey command line option to the rsa utility. Thanks to
15057 Adrian Peck <bertie@ncipher.com> for posting details of the modified
15058 algorithm to openssl-dev.
15062 * The evp_local.h macros were using 'c.##kname' which resulted in
15063 invalid expansion on some systems (SCO 5.0.5 for example).
15064 Corrected to 'c.kname'.
15066 *Phillip Porch <root@theporch.com>*
15068 * New X509_get1_email() and X509_REQ_get1_email() functions that return
15069 a STACK of email addresses from a certificate or request, these look
15070 in the subject name and the subject alternative name extensions and
15071 omit any duplicate addresses.
15075 * Re-implement BN_mod_exp2_mont using independent (and larger) windows.
15076 This makes DSA verification about 2 % faster.
15080 * Increase maximum window size in `BN_mod_exp_...` to 6 bits instead of 5
15081 (meaning that now 2^5 values will be precomputed, which is only 4 KB
15082 plus overhead for 1024 bit moduli).
15083 This makes exponentiations about 0.5 % faster for 1024 bit
15084 exponents (as measured by "openssl speed rsa2048").
15088 * Rename memory handling macros to avoid conflicts with other
15090 Malloc => OPENSSL_malloc
15091 Malloc_locked => OPENSSL_malloc_locked
15092 Realloc => OPENSSL_realloc
15093 Free => OPENSSL_free
15097 * New function BN_mod_exp_mont_word for small bases (roughly 15%
15098 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
15102 * CygWin32 support.
15104 *John Jarvie <jjarvie@newsguy.com>*
15106 * The type-safe stack code has been rejigged. It is now only compiled
15107 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
15108 by default all type-specific stack functions are "#define"d back to
15109 standard stack functions. This results in more streamlined output
15110 but retains the type-safety checking possibilities of the original
15115 * The STACK code has been cleaned up, and certain type declarations
15116 that didn't make a lot of sense have been brought in line. This has
15117 also involved a cleanup of sorts in safestack.h to more correctly
15118 map type-safe stack functions onto their plain stack counterparts.
15119 This work has also resulted in a variety of "const"ifications of
15120 lots of the code, especially `_cmp` operations which should normally
15121 be prototyped with "const" parameters anyway.
15125 * When generating bytes for the first time in md_rand.c, 'stir the pool'
15126 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
15127 (The PRNG state consists of two parts, the large pool 'state' and 'md',
15128 where all of 'md' is used each time the PRNG is used, but 'state'
15129 is used only indexed by a cyclic counter. As entropy may not be
15130 well distributed from the beginning, 'md' is important as a
15131 chaining variable. However, the output function chains only half
15132 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
15133 all of 'md', and seeding with STATE_SIZE dummy bytes will result
15134 in all of 'state' being rewritten, with the new values depending
15135 on virtually all of 'md'. This overcomes the 80 bit limitation.)
15139 * In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
15140 the handshake is continued after ssl_verify_cert_chain();
15141 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
15142 can lead to 'unexplainable' connection aborts later.
15144 *Bodo Moeller; problem tracked down by Lutz Jaenicke*
15146 * Major EVP API cipher revision.
15147 Add hooks for extra EVP features. This allows various cipher
15148 parameters to be set in the EVP interface. Support added for variable
15149 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
15150 setting of RC2 and RC5 parameters.
15152 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
15155 Remove lots of duplicated code from the EVP library. For example *every*
15156 cipher init() function handles the 'iv' in the same way according to the
15157 cipher mode. They also all do nothing if the 'key' parameter is NULL and
15158 for CFB and OFB modes they zero ctx->num.
15160 New functionality allows removal of S/MIME code RC2 hack.
15162 Most of the routines have the same form and so can be declared in terms
15165 By shifting this to the top level EVP_CipherInit() it can be removed from
15166 all individual ciphers. If the cipher wants to handle IVs or keys
15167 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
15170 Change lots of functions like EVP_EncryptUpdate() to now return a
15171 value: although software versions of the algorithms cannot fail
15172 any installed hardware versions can.
15176 * Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
15177 this option is set, tolerate broken clients that send the negotiated
15178 protocol version number instead of the requested protocol version
15183 * Call dh_tmp_cb (set by `..._TMP_DH_CB`) with correct 'is_export' flag;
15184 i.e. non-zero for export ciphersuites, zero otherwise.
15185 Previous versions had this flag inverted, inconsistent with
15186 rsa_tmp_cb (..._TMP_RSA_CB).
15188 *Bodo Moeller; problem reported by Amit Chopra*
15190 * Add missing DSA library text string. Work around for some IIS
15191 key files with invalid SEQUENCE encoding.
15195 * Add a document (doc/standards.txt) that list all kinds of standards
15196 and so on that are implemented in OpenSSL.
15200 * Enhance c_rehash script. Old version would mishandle certificates
15201 with the same subject name hash and wouldn't handle CRLs at all.
15202 Added -fingerprint option to crl utility, to support new c_rehash
15207 * Eliminate non-ANSI declarations in crypto.h and stack.h.
15211 * Fix for SSL server purpose checking. Server checking was
15212 rejecting certificates which had extended key usage present
15213 but no ssl client purpose.
15215 *Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>*
15217 * Make PKCS#12 code work with no password. The PKCS#12 spec
15218 is a little unclear about how a blank password is handled.
15219 Since the password in encoded as a BMPString with terminating
15220 double NULL a zero length password would end up as just the
15221 double NULL. However no password at all is different and is
15222 handled differently in the PKCS#12 key generation code. NS
15223 treats a blank password as zero length. MSIE treats it as no
15224 password on export: but it will try both on import. We now do
15225 the same: PKCS12_parse() tries zero length and no password if
15226 the password is set to "" or NULL (NULL is now a valid password:
15227 it wasn't before) as does the pkcs12 application.
15231 * Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
15232 perror when PEM_read_bio_X509_REQ fails, the error message must
15233 be obtained from the error queue.
15237 * Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
15238 it in ERR_remove_state if appropriate, and change ERR_get_state
15239 accordingly to avoid race conditions (this is necessary because
15240 thread_hash is no longer constant once set).
15244 * Bugfix for linux-elf makefile.one.
15248 * RSA_get_default_method() will now cause a default
15249 RSA_METHOD to be chosen if one doesn't exist already.
15250 Previously this was only set during a call to RSA_new()
15251 or RSA_new_method(NULL) meaning it was possible for
15252 RSA_get_default_method() to return NULL.
15256 * Added native name translation to the existing DSO code
15257 that will convert (if the flag to do so is set) filenames
15258 that are sufficiently small and have no path information
15259 into a canonical native form. Eg. "blah" converted to
15260 "libblah.so" or "blah.dll" etc.
15264 * New function ERR_error_string_n(e, buf, len) which is like
15265 ERR_error_string(e, buf), but writes at most 'len' bytes
15266 including the 0 terminator. For ERR_error_string_n, 'buf'
15269 *Damien Miller <djm@mindrot.org>, Bodo Moeller*
15271 * CONF library reworked to become more general. A new CONF
15272 configuration file reader "class" is implemented as well as a
15273 new functions (`NCONF_*`, for "New CONF") to handle it. The now
15274 old `CONF_*` functions are still there, but are reimplemented to
15275 work in terms of the new functions. Also, a set of functions
15276 to handle the internal storage of the configuration data is
15277 provided to make it easier to write new configuration file
15278 reader "classes" (I can definitely see something reading a
15279 configuration file in XML format, for example), called `_CONF_*`,
15280 or "the configuration storage API"...
15282 The new configuration file reading functions are:
15284 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
15285 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
15287 NCONF_default, NCONF_WIN32
15289 NCONF_dump_fp, NCONF_dump_bio
15291 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
15292 NCONF_new creates a new CONF object. This works in the same way
15293 as other interfaces in OpenSSL, like the BIO interface.
15294 `NCONF_dump_*` dump the internal storage of the configuration file,
15295 which is useful for debugging. All other functions take the same
15296 arguments as the old `CONF_*` functions with the exception of the
15297 first that must be a `CONF *` instead of a `LHASH *`.
15299 To make it easier to use the new classes with the old `CONF_*` functions,
15300 the function CONF_set_default_method is provided.
15304 * Add '-tls1' option to 'openssl ciphers', which was already
15305 mentioned in the documentation but had not been implemented.
15306 (This option is not yet really useful because even the additional
15307 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
15311 * Initial DSO code added into libcrypto for letting OpenSSL (and
15312 OpenSSL-based applications) load shared libraries and bind to
15313 them in a portable way.
15315 *Geoff Thorpe, with contributions from Richard Levitte*
15317 ### Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
15319 * Make sure _lrotl and _lrotr are only used with MSVC.
15321 * Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
15322 (the default implementation of RAND_status).
15324 * Rename openssl x509 option '-crlext', which was added in 0.9.5,
15325 to '-clrext' (= clear extensions), as intended and documented.
15326 *Bodo Moeller; inconsistency pointed out by Michael Attili
15327 <attili@amaxo.com>*
15329 * Fix for HMAC. It wasn't zeroing the rest of the block if the key length
15330 was larger than the MD block size.
15332 *Steve Henson, pointed out by Yost William <YostW@tce.com>*
15334 * Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
15335 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
15336 using the passed key: if the passed key was a private key the result
15337 of X509_print(), for example, would be to print out all the private key
15342 * des_quad_cksum() byte order bug fix.
15343 *Ulf Möller, using the problem description in krb4-0.9.7, where
15344 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>*
15346 * Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
15349 *Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>*
15351 * For easily testing in shell scripts whether some command
15352 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
15353 returns with exit code 0 iff no command of the given name is available.
15354 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
15355 the output goes to stdout and nothing is printed to stderr.
15356 Additional arguments are always ignored.
15358 Since for each cipher there is a command of the same name,
15359 the 'no-cipher' compilation switches can be tested this way.
15361 ('openssl no-XXX' is not able to detect pseudo-commands such
15362 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
15366 * Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
15370 * For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
15371 is set; it will be thrown away anyway because each handshake creates
15373 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
15374 to parameters -- in previous versions (since OpenSSL 0.9.3) the
15375 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
15376 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
15380 * New s_client option -ign_eof: EOF at stdin is ignored, and
15381 'Q' and 'R' lose their special meanings (quit/renegotiate).
15382 This is part of what -quiet does; unlike -quiet, -ign_eof
15383 does not suppress any output.
15387 * Add compatibility options to the purpose and trust code. The
15388 purpose X509_PURPOSE_ANY is "any purpose" which automatically
15389 accepts a certificate or CA, this was the previous behaviour,
15390 with all the associated security issues.
15392 X509_TRUST_COMPAT is the old trust behaviour: only and
15393 automatically trust self signed roots in certificate store. A
15394 new trust setting X509_TRUST_DEFAULT is used to specify that
15395 a purpose has no associated trust setting and it should instead
15396 use the value in the default purpose.
15400 * Fix the PKCS#8 DSA private key code so it decodes keys again
15401 and fix a memory leak.
15405 * In util/mkerr.pl (which implements 'make errors'), preserve
15406 reason strings from the previous version of the .c file, as
15407 the default to have only downcase letters (and digits) in
15408 automatically generated reasons codes is not always appropriate.
15412 * In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
15413 using strerror. Previously, ERR_reason_error_string() returned
15414 library names as reason strings for SYSerr; but SYSerr is a special
15415 case where small numbers are errno values, not library numbers.
15419 * Add '-dsaparam' option to 'openssl dhparam' application. This
15420 converts DSA parameters into DH parameters. (When creating parameters,
15421 DSA_generate_parameters is used.)
15425 * Include 'length' (recommended exponent length) in C code generated
15426 by 'openssl dhparam -C'.
15430 * The second argument to set_label in perlasm was already being used
15431 so couldn't be used as a "file scope" flag. Moved to third argument
15436 * In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
15437 instead of RAND_bytes for encryption IVs and salts.
15441 * Include RAND_status() into RAND_METHOD instead of implementing
15442 it only for md_rand.c Otherwise replacing the PRNG by calling
15443 RAND_set_rand_method would be impossible.
15447 * Don't let DSA_generate_key() enter an infinite loop if the random
15448 number generation fails.
15452 * New 'rand' application for creating pseudo-random output.
15456 * Added configuration support for Linux/IA64
15458 *Rolf Haberrecker <rolf@suse.de>*
15460 * Assembler module support for Mingw32.
15464 * Shared library support for HPUX (in shlib/).
15466 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous*
15468 * Shared library support for Solaris gcc.
15470 *Lutz Behnke <behnke@trustcenter.de>*
15472 ### Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
15474 * PKCS7_encrypt() was adding text MIME headers twice because they
15475 were added manually and by SMIME_crlf_copy().
15479 * In bntest.c don't call BN_rand with zero bits argument.
15481 *Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>*
15483 * BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
15484 case was implemented. This caused BN_div_recp() to fail occasionally.
15488 * Add an optional second argument to the set_label() in the perl
15489 assembly language builder. If this argument exists and is set
15490 to 1 it signals that the assembler should use a symbol whose
15491 scope is the entire file, not just the current function. This
15492 is needed with MASM which uses the format label:: for this scope.
15494 *Steve Henson, pointed out by Peter Runestig <peter@runestig.com>*
15496 * Change the ASN1 types so they are typedefs by default. Before
15497 almost all types were #define'd to ASN1_STRING which was causing
15498 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
15503 * Change names of new functions to the new get1/get0 naming
15504 convention: After 'get1', the caller owns a reference count
15505 and has to call `..._free`; 'get0' returns a pointer to some
15506 data structure without incrementing reference counters.
15507 (Some of the existing 'get' functions increment a reference
15508 counter, some don't.)
15509 Similarly, 'set1' and 'add1' functions increase reference
15510 counters or duplicate objects.
15514 * Allow for the possibility of temp RSA key generation failure:
15515 the code used to assume it always worked and crashed on failure.
15519 * Fix potential buffer overrun problem in BIO_printf().
15520 *Ulf Möller, using public domain code by Patrick Powell; problem
15521 pointed out by David Sacerdote <das33@cornell.edu>*
15523 * Support EGD <http://www.lothar.com/tech/crypto/>. New functions
15524 RAND_egd() and RAND_status(). In the command line application,
15525 the EGD socket can be specified like a seed file using RANDFILE
15530 * Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
15531 Some CAs (e.g. Verisign) distribute certificates in this form.
15535 * Remove the SSL_ALLOW_ADH compile option and set the default cipher
15536 list to exclude them. This means that no special compilation option
15537 is needed to use anonymous DH: it just needs to be included in the
15542 * Change the EVP_MD_CTX_type macro so its meaning consistent with
15543 EVP_MD_type. The old functionality is available in a new macro called
15544 EVP_MD_md(). Change code that uses it and update docs.
15548 * `..._ctrl` functions now have corresponding `..._callback_ctrl` functions
15549 where the `void *` argument is replaced by a function pointer argument.
15550 Previously `void *` was abused to point to functions, which works on
15551 many platforms, but is not correct. As these functions are usually
15552 called by macros defined in OpenSSL header files, most source code
15553 should work without changes.
15557 * `<openssl/opensslconf.h>` (which is created by Configure) now contains
15558 sections with information on -D... compiler switches used for
15559 compiling the library so that applications can see them. To enable
15560 one of these sections, a pre-processor symbol `OPENSSL_..._DEFINES`
15561 must be defined. E.g.,
15562 #define OPENSSL_ALGORITHM_DEFINES
15563 #include <openssl/opensslconf.h>
15564 defines all pertinent `NO_<algo>` symbols, such as NO_IDEA, NO_RSA, etc.
15566 *Richard Levitte, Ulf and Bodo Möller*
15568 * Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
15573 * Change the 'other' type in certificate aux info to a STACK_OF
15574 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
15575 the required ASN1 format: arbitrary types determined by an OID.
15579 * Add some PEM_write_X509_REQ_NEW() functions and a command line
15580 argument to 'req'. This is not because the function is newer or
15581 better than others it just uses the work 'NEW' in the certificate
15582 request header lines. Some software needs this.
15586 * Reorganise password command line arguments: now passwords can be
15587 obtained from various sources. Delete the PEM_cb function and make
15588 it the default behaviour: i.e. if the callback is NULL and the
15589 usrdata argument is not NULL interpret it as a null terminated pass
15590 phrase. If usrdata and the callback are NULL then the pass phrase
15591 is prompted for as usual.
15595 * Add support for the Compaq Atalla crypto accelerator. If it is installed,
15596 the support is automatically enabled. The resulting binaries will
15597 autodetect the card and use it if present.
15599 *Ben Laurie and Compaq Inc.*
15601 * Work around for Netscape hang bug. This sends certificate request
15602 and server done in one record. Since this is perfectly legal in the
15603 SSL/TLS protocol it isn't a "bug" option and is on by default. See
15604 the bugs/SSLv3 entry for more info.
15608 * HP-UX tune-up: new unified configs, HP C compiler bug workaround.
15612 * Add -rand argument to smime and pkcs12 applications and read/write
15617 * New 'passwd' tool for crypt(3) and apr1 password hashes.
15621 * Add command line password options to the remaining applications.
15625 * Bug fix for BN_div_recp() for numerators with an even number of
15630 * More tests in bntest.c, and changed test_bn output.
15634 * ./config recognizes MacOS X now.
15638 * Bug fix for BN_div() when the first words of num and divisor are
15639 equal (it gave wrong results if `(rem=(n1-q*d0)&BN_MASK2) < d0)`.
15643 * Add support for various broken PKCS#8 formats, and command line
15644 options to produce them.
15648 * New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
15649 get temporary BIGNUMs from a BN_CTX.
15653 * Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
15658 * Change the `SSLeay_add_all_*()` functions to `OpenSSL_add_all_*()` and
15659 include a #define from the old name to the new. The original intent
15660 was that statically linked binaries could for example just call
15661 SSLeay_add_all_ciphers() to just add ciphers to the table and not
15662 link with digests. This never worked because SSLeay_add_all_digests()
15663 and SSLeay_add_all_ciphers() were in the same source file so calling
15664 one would link with the other. They are now in separate source files.
15668 * Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
15672 * Use a less unusual form of the Miller-Rabin primality test (it used
15673 a binary algorithm for exponentiation integrated into the Miller-Rabin
15674 loop, our standard modexp algorithms are faster).
15678 * Support for the EBCDIC character set completed.
15680 *Martin Kraemer <Martin.Kraemer@Mch.SNI.De>*
15682 * Source code cleanups: use const where appropriate, eliminate casts,
15683 use `void *` instead of `char *` in lhash.
15687 * Bugfix: ssl3_send_server_key_exchange was not restartable
15688 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
15689 this the server could overwrite ephemeral keys that the client
15694 * Turn DSA_is_prime into a macro that calls BN_is_prime,
15695 using 50 iterations of the Rabin-Miller test.
15697 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
15698 iterations of the Rabin-Miller test as required by the appendix
15699 to FIPS PUB 186[-1]) instead of DSA_is_prime.
15700 As BN_is_prime_fasttest includes trial division, DSA parameter
15701 generation becomes much faster.
15703 This implies a change for the callback functions in DSA_is_prime
15704 and DSA_generate_parameters: The callback function is called once
15705 for each positive witness in the Rabin-Miller test, not just
15706 occasionally in the inner loop; and the parameters to the
15707 callback function now provide an iteration count for the outer
15708 loop rather than for the current invocation of the inner loop.
15709 DSA_generate_parameters additionally can call the callback
15710 function with an 'iteration count' of -1, meaning that a
15711 candidate has passed the trial division test (when q is generated
15712 from an application-provided seed, trial division is skipped).
15716 * New function BN_is_prime_fasttest that optionally does trial
15717 division before starting the Rabin-Miller test and has
15718 an additional BN_CTX * argument (whereas BN_is_prime always
15719 has to allocate at least one BN_CTX).
15720 'callback(1, -1, cb_arg)' is called when a number has passed the
15721 trial division stage.
15725 * Fix for bug in CRL encoding. The validity dates weren't being handled
15730 * New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
15734 * New function BN_pseudo_rand().
15738 * Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
15739 bignum version of BN_from_montgomery() with the working code from
15740 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
15745 * Avoid a race condition in s2_clnt.c (function get_server_hello) that
15746 made it impossible to use the same SSL_SESSION data structure in
15747 SSL2 clients in multiple threads.
15751 * The return value of RAND_load_file() no longer counts bytes obtained
15752 by stat(). RAND_load_file(..., -1) is new and uses the complete file
15753 to seed the PRNG (previously an explicit byte count was required).
15755 *Ulf Möller, Bodo Möller*
15757 * Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
15758 used `char *` instead of `void *` and had casts all over the place.
15762 * Make BN_generate_prime() return NULL on error if ret!=NULL.
15766 * Retain source code compatibility for BN_prime_checks macro:
15767 BN_is_prime(..., BN_prime_checks, ...) now uses
15768 BN_prime_checks_for_size to determine the appropriate number of
15769 Rabin-Miller iterations.
15773 * Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
15774 DH_CHECK_P_NOT_SAFE_PRIME.
15775 (Check if this is true? OpenPGP calls them "strong".)
15779 * Merge the functionality of "dh" and "gendh" programs into a new program
15780 "dhparam". The old programs are retained for now but will handle DH keys
15781 (instead of parameters) in future.
15785 * Make the ciphers, s_server and s_client programs check the return values
15786 when a new cipher list is set.
15790 * Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
15791 ciphers. Before when the 56bit ciphers were enabled the sorting was
15794 The syntax for the cipher sorting has been extended to support sorting by
15795 cipher-strength (using the strength_bits hard coded in the tables).
15796 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
15798 Fix a bug in the cipher-command parser: when supplying a cipher command
15799 string with an "undefined" symbol (neither command nor alphanumeric
15800 *A-Za-z0-9*, ssl_set_cipher_list used to hang in an endless loop. Now
15801 an error is flagged.
15803 Due to the strength-sorting extension, the code of the
15804 ssl_create_cipher_list() function was completely rearranged. I hope that
15805 the readability was also increased :-)
15807 *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
15809 * Minor change to 'x509' utility. The -CAcreateserial option now uses 1
15810 for the first serial number and places 2 in the serial number file. This
15811 avoids problems when the root CA is created with serial number zero and
15812 the first user certificate has the same issuer name and serial number
15817 * Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
15818 the new code. Add documentation for this stuff.
15822 * Changes to X509_ATTRIBUTE utilities. These have been renamed from
15823 `X509_*()` to `X509at_*()` on the grounds that they don't handle X509
15824 structures and behave in an analogous way to the X509v3 functions:
15825 they shouldn't be called directly but wrapper functions should be used
15828 So we also now have some wrapper functions that call the X509at functions
15829 when passed certificate requests. (TO DO: similar things can be done with
15830 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
15831 things. Some of these need some d2i or i2d and print functionality
15832 because they handle more complex structures.)
15836 * Add missing #ifndefs that caused missing symbols when building libssl
15837 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
15838 NO_RSA in `ssl/s2*.c`.
15840 *Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller*
15842 * Precautions against using the PRNG uninitialized: RAND_bytes() now
15843 has a return value which indicates the quality of the random data
15844 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
15845 error queue. New function RAND_pseudo_bytes() generates output that is
15846 guaranteed to be unique but not unpredictable. RAND_add is like
15847 RAND_seed, but takes an extra argument for an entropy estimate
15848 (RAND_seed always assumes full entropy).
15852 * Do more iterations of Rabin-Miller probable prime test (specifically,
15853 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
15854 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
15855 in crypto/bn/bn_prime.c for the complete table). This guarantees a
15856 false-positive rate of at most 2^-80 for random input.
15860 * Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
15864 * New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
15865 in the 0.9.5 release), this returns the chain
15866 from an X509_CTX structure with a dup of the stack and all
15867 the X509 reference counts upped: so the stack will exist
15868 after X509_CTX_cleanup() has been called. Modify pkcs12.c
15871 Also make SSL_SESSION_print() print out the verify return
15876 * Add manpage for the pkcs12 command. Also change the default
15877 behaviour so MAC iteration counts are used unless the new
15878 -nomaciter option is used. This improves file security and
15879 only older versions of MSIE (4.0 for example) need it.
15883 * Honor the no-xxx Configure options when creating .DEF files.
15887 * Add PKCS#10 attributes to field table: challengePassword,
15888 unstructuredName and unstructuredAddress. These are taken from
15889 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
15890 international characters are used.
15892 More changes to X509_ATTRIBUTE code: allow the setting of types
15893 based on strings. Remove the 'loc' parameter when adding
15894 attributes because these will be a SET OF encoding which is sorted
15899 * Initial changes to the 'req' utility to allow request generation
15900 automation. This will allow an application to just generate a template
15901 file containing all the field values and have req construct the
15904 Initial support for X509_ATTRIBUTE handling. Stacks of these are
15905 used all over the place including certificate requests and PKCS#7
15906 structures. They are currently handled manually where necessary with
15907 some primitive wrappers for PKCS#7. The new functions behave in a
15908 manner analogous to the X509 extension functions: they allow
15909 attributes to be looked up by NID and added.
15911 Later something similar to the X509V3 code would be desirable to
15912 automatically handle the encoding, decoding and printing of the
15913 more complex types. The string types like challengePassword can
15914 be handled by the string table functions.
15916 Also modified the multi byte string table handling. Now there is
15917 a 'global mask' which masks out certain types. The table itself
15918 can use the flag STABLE_NO_MASK to ignore the mask setting: this
15919 is useful when for example there is only one permissible type
15920 (as in countryName) and using the mask might result in no valid
15925 * Clean up 'Finished' handling, and add functions SSL_get_finished and
15926 SSL_get_peer_finished to allow applications to obtain the latest
15927 Finished messages sent to the peer or expected from the peer,
15928 respectively. (SSL_get_peer_finished is usually the Finished message
15929 actually received from the peer, otherwise the protocol will be aborted.)
15931 As the Finished message are message digests of the complete handshake
15932 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
15933 be used for external authentication procedures when the authentication
15934 provided by SSL/TLS is not desired or is not enough.
15938 * Enhanced support for Alpha Linux is added. Now ./config checks if
15939 the host supports BWX extension and if Compaq C is present on the
15940 $PATH. Just exploiting of the BWX extension results in 20-30%
15941 performance kick for some algorithms, e.g. DES and RC4 to mention
15942 a couple. Compaq C in turn generates ~20% faster code for MD5 and
15947 * Add support for MS "fast SGC". This is arguably a violation of the
15948 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
15949 weak crypto and after checking the certificate is SGC a second one
15950 with strong crypto. MS SGC stops the first handshake after receiving
15951 the server certificate message and sends a second client hello. Since
15952 a server will typically do all the time consuming operations before
15953 expecting any further messages from the client (server key exchange
15954 is the most expensive) there is little difference between the two.
15956 To get OpenSSL to support MS SGC we have to permit a second client
15957 hello message after we have sent server done. In addition we have to
15958 reset the MAC if we do get this second client hello.
15962 * Add a function 'd2i_AutoPrivateKey()' this will automatically decide
15963 if a DER encoded private key is RSA or DSA traditional format. Changed
15964 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
15965 format DER encoded private key. Newer code should use PKCS#8 format which
15966 has the key type encoded in the ASN1 structure. Added DER private key
15967 support to pkcs8 application.
15971 * SSL 3/TLS 1 servers now don't request certificates when an anonymous
15972 ciphersuites has been selected (as required by the SSL 3/TLS 1
15973 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
15974 is set, we interpret this as a request to violate the specification
15975 (the worst that can happen is a handshake failure, and 'correct'
15976 behaviour would result in a handshake failure anyway).
15980 * In SSL_CTX_add_session, take into account that there might be multiple
15981 SSL_SESSION structures with the same session ID (e.g. when two threads
15982 concurrently obtain them from an external cache).
15983 The internal cache can handle only one SSL_SESSION with a given ID,
15984 so if there's a conflict, we now throw out the old one to achieve
15989 * Add OIDs for idea and blowfish in CBC mode. This will allow both
15990 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
15991 some routines that use cipher OIDs: some ciphers do not have OIDs
15992 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
15997 * Simplify the trust setting structure and code. Now we just have
15998 two sequences of OIDs for trusted and rejected settings. These will
15999 typically have values the same as the extended key usage extension
16000 and any application specific purposes.
16002 The trust checking code now has a default behaviour: it will just
16003 check for an object with the same NID as the passed id. Functions can
16004 be provided to override either the default behaviour or the behaviour
16005 for a given id. SSL client, server and email already have functions
16006 in place for compatibility: they check the NID and also return "trusted"
16007 if the certificate is self signed.
16011 * Add d2i,i2d bio/fp functions for PrivateKey: these convert the
16012 traditional format into an EVP_PKEY structure.
16016 * Add a password callback function PEM_cb() which either prompts for
16017 a password if usr_data is NULL or otherwise assumes it is a null
16018 terminated password. Allow passwords to be passed on command line
16019 environment or config files in a few more utilities.
16023 * Add a bunch of DER and PEM functions to handle PKCS#8 format private
16024 keys. Add some short names for PKCS#8 PBE algorithms and allow them
16025 to be specified on the command line for the pkcs8 and pkcs12 utilities.
16026 Update documentation.
16030 * Support for ASN1 "NULL" type. This could be handled before by using
16031 ASN1_TYPE but there wasn't any function that would try to read a NULL
16032 and produce an error if it couldn't. For compatibility we also have
16033 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
16034 don't allocate anything because they don't need to.
16038 * Initial support for MacOS is now provided. Examine INSTALL.MacOS
16041 *Andy Polyakov, Roy Woods <roy@centicsystems.ca>*
16043 * Rebuild of the memory allocation routines used by OpenSSL code and
16044 possibly others as well. The purpose is to make an interface that
16045 provide hooks so anyone can build a separate set of allocation and
16046 deallocation routines to be used by OpenSSL, for example memory
16047 pool implementations, or something else, which was previously hard
16048 since Malloc(), Realloc() and Free() were defined as macros having
16049 the values malloc, realloc and free, respectively (except for Win32
16050 compilations). The same is provided for memory debugging code.
16051 OpenSSL already comes with functionality to find memory leaks, but
16052 this gives people a chance to debug other memory problems.
16054 With these changes, a new set of functions and macros have appeared:
16056 CRYPTO_set_mem_debug_functions() [F]
16057 CRYPTO_get_mem_debug_functions() [F]
16058 CRYPTO_dbg_set_options() [F]
16059 CRYPTO_dbg_get_options() [F]
16060 CRYPTO_malloc_debug_init() [M]
16062 The memory debug functions are NULL by default, unless the library
16063 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
16064 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
16065 gives the standard debugging functions that come with OpenSSL) or
16066 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
16067 provided by the library user) must be used. When the standard
16068 debugging functions are used, CRYPTO_dbg_set_options can be used to
16069 request additional information:
16070 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
16071 the CRYPTO_MDEBUG_xxx macro when compiling the library.
16073 Also, things like CRYPTO_set_mem_functions will always give the
16074 expected result (the new set of functions is used for allocation
16075 and deallocation) at all times, regardless of platform and compiler
16078 To finish it up, some functions that were never use in any other
16079 way than through macros have a new API and new semantic:
16081 CRYPTO_dbg_malloc()
16082 CRYPTO_dbg_realloc()
16085 All macros of value have retained their old syntax.
16087 *Richard Levitte and Bodo Moeller*
16089 * Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
16090 ordering of SMIMECapabilities wasn't in "strength order" and there
16091 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
16096 * Some ASN1 types with illegal zero length encoding (INTEGER,
16097 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
16099 *Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson*
16101 * Merge in my S/MIME library for OpenSSL. This provides a simple
16102 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
16103 functionality to handle multipart/signed properly) and a utility
16104 called 'smime' to call all this stuff. This is based on code I
16105 originally wrote for Celo who have kindly allowed it to be
16106 included in OpenSSL.
16110 * Add variants des_set_key_checked and des_set_key_unchecked of
16111 des_set_key (aka des_key_sched). Global variable des_check_key
16112 decides which of these is called by des_set_key; this way
16113 des_check_key behaves as it always did, but applications and
16114 the library itself, which was buggy for des_check_key == 1,
16115 have a cleaner way to pick the version they need.
16119 * New function PKCS12_newpass() which changes the password of a
16124 * Modify X509_TRUST and X509_PURPOSE so it also uses a static and
16125 dynamic mix. In both cases the ids can be used as an index into the
16126 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
16127 functions so they accept a list of the field values and the
16128 application doesn't need to directly manipulate the X509_TRUST
16133 * Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
16138 * Modify the way the V3 extension code looks up extensions. This now
16139 works in a similar way to the object code: we have some "standard"
16140 extensions in a static table which is searched with OBJ_bsearch()
16141 and the application can add dynamic ones if needed. The file
16142 crypto/x509v3/ext_dat.h now has the info: this file needs to be
16143 updated whenever a new extension is added to the core code and kept
16144 in ext_nid order. There is a simple program 'tabtest.c' which checks
16145 this. New extensions are not added too often so this file can readily
16146 be maintained manually.
16148 There are two big advantages in doing things this way. The extensions
16149 can be looked up immediately and no longer need to be "added" using
16150 X509V3_add_standard_extensions(): this function now does nothing.
16151 Side note: I get *lots* of email saying the extension code doesn't
16152 work because people forget to call this function.
16153 Also no dynamic allocation is done unless new extensions are added:
16154 so if we don't add custom extensions there is no need to call
16155 X509V3_EXT_cleanup().
16159 * Modify enc utility's salting as follows: make salting the default. Add a
16160 magic header, so unsalted files fail gracefully instead of just decrypting
16161 to garbage. This is because not salting is a big security hole, so people
16162 should be discouraged from doing it.
16166 * Fixes and enhancements to the 'x509' utility. It allowed a message
16167 digest to be passed on the command line but it only used this
16168 parameter when signing a certificate. Modified so all relevant
16169 operations are affected by the digest parameter including the
16170 -fingerprint and -x509toreq options. Also -x509toreq choked if a
16171 DSA key was used because it didn't fix the digest.
16175 * Initial certificate chain verify code. Currently tests the untrusted
16176 certificates for consistency with the verify purpose (which is set
16177 when the X509_STORE_CTX structure is set up) and checks the pathlength.
16179 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
16180 this is because it will reject chains with invalid extensions whereas
16181 every previous version of OpenSSL and SSLeay made no checks at all.
16183 Trust code: checks the root CA for the relevant trust settings. Trust
16184 settings have an initial value consistent with the verify purpose: e.g.
16185 if the verify purpose is for SSL client use it expects the CA to be
16186 trusted for SSL client use. However the default value can be changed to
16187 permit custom trust settings: one example of this would be to only trust
16188 certificates from a specific "secure" set of CAs.
16190 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
16191 which should be used for version portability: especially since the
16192 verify structure is likely to change more often now.
16194 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
16195 to set them. If not set then assume SSL clients will verify SSL servers
16198 Two new options to the verify program: -untrusted allows a set of
16199 untrusted certificates to be passed in and -purpose which sets the
16200 intended purpose of the certificate. If a purpose is set then the
16201 new chain verify code is used to check extension consistency.
16205 * Support for the authority information access extension.
16209 * Modify RSA and DSA PEM read routines to transparently handle
16210 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
16211 public keys in a format compatible with certificate
16212 SubjectPublicKeyInfo structures. Unfortunately there were already
16213 functions called *_PublicKey_* which used various odd formats so
16214 these are retained for compatibility: however the DSA variants were
16215 never in a public release so they have been deleted. Changed dsa/rsa
16216 utilities to handle the new format: note no releases ever handled public
16217 keys so we should be OK.
16219 The primary motivation for this change is to avoid the same fiasco
16220 that dogs private keys: there are several incompatible private key
16221 formats some of which are standard and some OpenSSL specific and
16222 require various evil hacks to allow partial transparent handling and
16223 even then it doesn't work with DER formats. Given the option anything
16224 other than PKCS#8 should be dumped: but the other formats have to
16225 stay in the name of compatibility.
16227 With public keys and the benefit of hindsight one standard format
16228 is used which works with EVP_PKEY, RSA or DSA structures: though
16229 it clearly returns an error if you try to read the wrong kind of key.
16231 Added a -pubkey option to the 'x509' utility to output the public key.
16232 Also rename the `EVP_PKEY_get_*()` to `EVP_PKEY_rget_*()`
16233 (renamed to `EVP_PKEY_get1_*()` in the OpenSSL 0.9.5 release) and add
16234 `EVP_PKEY_rset_*()` functions (renamed to `EVP_PKEY_set1_*()`)
16235 that do the same as the `EVP_PKEY_assign_*()` except they up the
16236 reference count of the added key (they don't "swallow" the
16241 * Fixes to crypto/x509/by_file.c the code to read in certificates and
16242 CRLs would fail if the file contained no certificates or no CRLs:
16243 added a new function to read in both types and return the number
16244 read: this means that if none are read it will be an error. The
16245 DER versions of the certificate and CRL reader would always fail
16246 because it isn't possible to mix certificates and CRLs in DER format
16247 without choking one or the other routine. Changed this to just read
16248 a certificate: this is the best we can do. Also modified the code
16249 in apps/verify.c to take notice of return codes: it was previously
16250 attempting to read in certificates from NULL pointers and ignoring
16251 any errors: this is one reason why the cert and CRL reader seemed
16252 to work. It doesn't check return codes from the default certificate
16253 routines: these may well fail if the certificates aren't installed.
16257 * Code to support otherName option in GeneralName.
16261 * First update to verify code. Change the verify utility
16262 so it warns if it is passed a self signed certificate:
16263 for consistency with the normal behaviour. X509_verify
16264 has been modified to it will now verify a self signed
16265 certificate if *exactly* the same certificate appears
16266 in the store: it was previously impossible to trust a
16267 single self signed certificate. This means that:
16268 openssl verify ss.pem
16269 now gives a warning about a self signed certificate but
16270 openssl verify -CAfile ss.pem ss.pem
16275 * For servers, store verify_result in SSL_SESSION data structure
16276 (and add it to external session representation).
16277 This is needed when client certificate verifications fails,
16278 but an application-provided verification callback (set by
16279 SSL_CTX_set_cert_verify_callback) allows accepting the session
16280 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
16281 but returns 1): When the session is reused, we have to set
16282 ssl->verify_result to the appropriate error code to avoid
16285 *Bodo Moeller, problem pointed out by Lutz Jaenicke*
16287 * Fix a bug in the new PKCS#7 code: it didn't consider the
16288 case in PKCS7_dataInit() where the signed PKCS7 structure
16289 didn't contain any existing data because it was being created.
16291 *Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson*
16293 * Add a salt to the key derivation routines in enc.c. This
16294 forms the first 8 bytes of the encrypted file. Also add a
16295 -S option to allow a salt to be input on the command line.
16299 * New function X509_cmp(). Oddly enough there wasn't a function
16300 to compare two certificates. We do this by working out the SHA1
16301 hash and comparing that. X509_cmp() will be needed by the trust
16306 * SSL_get1_session() is like SSL_get_session(), but increments
16307 the reference count in the SSL_SESSION returned.
16309 *Geoff Thorpe <geoff@eu.c2.net>*
16311 * Fix for 'req': it was adding a null to request attributes.
16312 Also change the X509_LOOKUP and X509_INFO code to handle
16313 certificate auxiliary information.
16317 * Add support for 40 and 64 bit RC2 and RC4 algorithms: document
16322 * Add the possibility to add extra information to the memory leak
16323 detecting output, to form tracebacks, showing from where each
16324 allocation was originated: CRYPTO_push_info("constant string") adds
16325 the string plus current file name and line number to a per-thread
16326 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
16327 is like calling CYRPTO_pop_info() until the stack is empty.
16328 Also updated memory leak detection code to be multi-thread-safe.
16332 * Add options -text and -noout to pkcs7 utility and delete the
16333 encryption options which never did anything. Update docs.
16337 * Add options to some of the utilities to allow the pass phrase
16338 to be included on either the command line (not recommended on
16339 OSes like Unix) or read from the environment. Update the
16340 manpages and fix a few bugs.
16344 * Add a few manpages for some of the openssl commands.
16348 * Fix the -revoke option in ca. It was freeing up memory twice,
16349 leaking and not finding already revoked certificates.
16353 * Extensive changes to support certificate auxiliary information.
16354 This involves the use of X509_CERT_AUX structure and X509_AUX
16355 functions. An X509_AUX function such as PEM_read_X509_AUX()
16356 can still read in a certificate file in the usual way but it
16357 will also read in any additional "auxiliary information". By
16358 doing things this way a fair degree of compatibility can be
16359 retained: existing certificates can have this information added
16360 using the new 'x509' options.
16362 Current auxiliary information includes an "alias" and some trust
16363 settings. The trust settings will ultimately be used in enhanced
16364 certificate chain verification routines: currently a certificate
16365 can only be trusted if it is self signed and then it is trusted
16370 * Fix assembler for Alpha (tested only on DEC OSF not Linux or `*BSD`).
16371 The problem was that one of the replacement routines had not been working
16372 since SSLeay releases. For now the offending routine has been replaced
16373 with non-optimised assembler. Even so, this now gives around 95%
16374 performance improvement for 1024 bit RSA signs.
16378 * Hack to fix PKCS#7 decryption when used with some unorthodox RC2
16379 handling. Most clients have the effective key size in bits equal to
16380 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
16381 A few however don't do this and instead use the size of the decrypted key
16382 to determine the RC2 key length and the AlgorithmIdentifier to determine
16383 the effective key length. In this case the effective key length can still
16384 be 40 bits but the key length can be 168 bits for example. This is fixed
16385 by manually forcing an RC2 key into the EVP_PKEY structure because the
16386 EVP code can't currently handle unusual RC2 key sizes: it always assumes
16387 the key length and effective key length are equal.
16391 * Add a bunch of functions that should simplify the creation of
16392 X509_NAME structures. Now you should be able to do:
16393 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
16394 and have it automatically work out the correct field type and fill in
16395 the structures. The more adventurous can try:
16396 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
16397 and it will (hopefully) work out the correct multibyte encoding.
16401 * Change the 'req' utility to use the new field handling and multibyte
16402 copy routines. Before the DN field creation was handled in an ad hoc
16403 way in req, ca, and x509 which was rather broken and didn't support
16404 BMPStrings or UTF8Strings. Since some software doesn't implement
16405 BMPStrings or UTF8Strings yet, they can be enabled using the config file
16406 using the dirstring_type option. See the new comment in the default
16407 openssl.cnf for more info.
16411 * Make crypto/rand/md_rand.c more robust:
16412 - Assure unique random numbers after fork().
16413 - Make sure that concurrent threads access the global counter and
16414 md serializably so that we never lose entropy in them
16415 or use exactly the same state in multiple threads.
16416 Access to the large state is not always serializable because
16417 the additional locking could be a performance killer, and
16418 md should be large enough anyway.
16422 * New file apps/app_rand.c with commonly needed functionality
16423 for handling the random seed file.
16425 Use the random seed file in some applications that previously did not:
16427 dsaparam -genkey (which also ignored its '-rand' option),
16430 x509 (when signing).
16431 Except on systems with /dev/urandom, it is crucial to have a random
16432 seed file at least for key creation, DSA signing, and for DH exchanges;
16433 for RSA signatures we could do without one.
16435 gendh and gendsa (unlike genrsa) used to read only the first byte
16436 of each file listed in the '-rand' option. The function as previously
16437 found in genrsa is now in app_rand.c and is used by all programs
16438 that support '-rand'.
16442 * In RAND_write_file, use mode 0600 for creating files;
16443 don't just chmod when it may be too late.
16447 * Report an error from X509_STORE_load_locations
16448 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
16452 * New function ASN1_mbstring_copy() this copies a string in either
16453 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
16454 into an ASN1_STRING type. A mask of permissible types is passed
16455 and it chooses the "minimal" type to use or an error if not type
16460 * Add function equivalents to the various macros in asn1.h. The old
16461 macros are retained with an `M_` prefix. Code inside the library can
16462 use the `M_` macros. External code (including the openssl utility)
16463 should *NOT* in order to be "shared library friendly".
16467 * Add various functions that can check a certificate's extensions
16468 to see if it usable for various purposes such as SSL client,
16469 server or S/MIME and CAs of these types. This is currently
16470 VERY EXPERIMENTAL but will ultimately be used for certificate chain
16471 verification. Also added a -purpose flag to x509 utility to
16472 print out all the purposes.
16476 * Add a CRYPTO_EX_DATA to X509 certificate structure and associated
16481 * New `X509V3_{X509,CRL,REVOKED}_get_d2i()` functions. These will search
16482 for, obtain and decode and extension and obtain its critical flag.
16483 This allows all the necessary extension code to be handled in a
16484 single function call.
16488 * RC4 tune-up featuring 30-40% performance improvement on most RISC
16489 platforms. See crypto/rc4/rc4_enc.c for further details.
16493 * New -noout option to asn1parse. This causes no output to be produced
16494 its main use is when combined with -strparse and -out to extract data
16495 from a file (which may not be in ASN.1 format).
16499 * Fix for pkcs12 program. It was hashing an invalid certificate pointer
16500 when producing the local key id.
16502 *Richard Levitte <levitte@stacken.kth.se>*
16504 * New option -dhparam in s_server. This allows a DH parameter file to be
16505 stated explicitly. If it is not stated then it tries the first server
16506 certificate file. The previous behaviour hard coded the filename
16511 * Add -pubin and -pubout options to the rsa and dsa commands. These allow
16512 a public key to be input or output. For example:
16513 openssl rsa -in key.pem -pubout -out pubkey.pem
16514 Also added necessary DSA public key functions to handle this.
16518 * Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
16519 in the message. This was handled by allowing
16520 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
16522 *Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>*
16524 * Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
16525 to the end of the strings whereas this didn't. This would cause problems
16526 if strings read with d2i_ASN1_bytes() were later modified.
16528 *Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>*
16530 * Fix for base64 decode bug. When a base64 bio reads only one line of
16531 data and it contains EOF it will end up returning an error. This is
16532 caused by input 46 bytes long. The cause is due to the way base64
16533 BIOs find the start of base64 encoded data. They do this by trying a
16534 trial decode on each line until they find one that works. When they
16535 do a flag is set and it starts again knowing it can pass all the
16536 data directly through the decoder. Unfortunately it doesn't reset
16537 the context it uses. This means that if EOF is reached an attempt
16538 is made to pass two EOFs through the context and this causes the
16539 resulting error. This can also cause other problems as well. As is
16540 usual with these problems it takes *ages* to find and the fix is
16541 trivial: move one line.
16543 *Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer)*
16545 * Ugly workaround to get s_client and s_server working under Windows. The
16546 old code wouldn't work because it needed to select() on sockets and the
16547 tty (for keypresses and to see if data could be written). Win32 only
16548 supports select() on sockets so we select() with a 1s timeout on the
16549 sockets and then see if any characters are waiting to be read, if none
16550 are present then we retry, we also assume we can always write data to
16551 the tty. This isn't nice because the code then blocks until we've
16552 received a complete line of data and it is effectively polling the
16553 keyboard at 1s intervals: however it's quite a bit better than not
16554 working at all :-) A dedicated Windows application might handle this
16555 with an event loop for example.
16559 * Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
16560 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
16561 will be called when RSA_sign() and RSA_verify() are used. This is useful
16562 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
16563 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
16564 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
16565 This necessitated the support of an extra signature type NID_md5_sha1
16566 for SSL signatures and modifications to the SSL library to use it instead
16567 of calling RSA_public_decrypt() and RSA_private_encrypt().
16571 * Add new -verify -CAfile and -CApath options to the crl program, these
16572 will lookup a CRL issuers certificate and verify the signature in a
16573 similar way to the verify program. Tidy up the crl program so it
16574 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
16575 less strict. It will now permit CRL extensions even if it is not
16576 a V2 CRL: this will allow it to tolerate some broken CRLs.
16580 * Initialize all non-automatic variables each time one of the openssl
16581 sub-programs is started (this is necessary as they may be started
16582 multiple times from the "OpenSSL>" prompt).
16584 *Lennart Bang, Bodo Moeller*
16586 * Preliminary compilation option RSA_NULL which disables RSA crypto without
16587 removing all other RSA functionality (this is what NO_RSA does). This
16588 is so (for example) those in the US can disable those operations covered
16589 by the RSA patent while allowing storage and parsing of RSA keys and RSA
16594 * Non-copying interface to BIO pairs.
16595 (still largely untested)
16599 * New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
16600 ASCII string. This was handled independently in various places before.
16604 * New functions UTF8_getc() and UTF8_putc() that parse and generate
16605 UTF8 strings a character at a time.
16609 * Use client_version from client hello to select the protocol
16610 (s23_srvr.c) and for RSA client key exchange verification
16611 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
16615 * Add various utility functions to handle SPKACs, these were previously
16616 handled by poking round in the structure internals. Added new function
16617 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
16618 print, verify and generate SPKACs. Based on an original idea from
16619 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
16623 * RIPEMD160 is operational on all platforms and is back in 'make test'.
16627 * Allow the config file extension section to be overwritten on the
16628 command line. Based on an original idea from Massimiliano Pala
16629 <madwolf@comune.modena.it>. The new option is called -extensions
16630 and can be applied to ca, req and x509. Also -reqexts to override
16631 the request extensions in req and -crlexts to override the crl extensions
16636 * Add new feature to the SPKAC handling in ca. Now you can include
16637 the same field multiple times by preceding it by "XXXX." for example:
16640 this is the same syntax as used in the req config file.
16644 * Allow certificate extensions to be added to certificate requests. These
16645 are specified in a 'req_extensions' option of the req section of the
16646 config file. They can be printed out with the -text option to req but
16647 are otherwise ignored at present.
16651 * Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
16652 data read consists of only the final block it would not decrypted because
16653 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
16654 A misplaced 'break' also meant the decrypted final block might not be
16655 copied until the next read.
16659 * Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
16660 a few extra parameters to the DH structure: these will be useful if
16661 for example we want the value of 'q' or implement X9.42 DH.
16665 * Initial support for DSA_METHOD. This is based on the RSA_METHOD and
16666 provides hooks that allow the default DSA functions or functions on a
16667 "per key" basis to be replaced. This allows hardware acceleration and
16668 hardware key storage to be handled without major modification to the
16669 library. Also added low level modexp hooks and CRYPTO_EX structure and
16670 associated functions.
16674 * Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
16675 as "read only": it can't be written to and the buffer it points to will
16676 not be freed. Reading from a read only BIO is much more efficient than
16677 a normal memory BIO. This was added because there are several times when
16678 an area of memory needs to be read from a BIO. The previous method was
16679 to create a memory BIO and write the data to it, this results in two
16680 copies of the data and an O(n^2) reading algorithm. There is a new
16681 function BIO_new_mem_buf() which creates a read only memory BIO from
16682 an area of memory. Also modified the PKCS#7 routines to use read only
16687 * Bugfix: ssl23_get_client_hello did not work properly when called in
16688 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
16689 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
16690 but a retry condition occurred while trying to read the rest.
16694 * The PKCS7_ENC_CONTENT_new() function was setting the content type as
16695 NID_pkcs7_encrypted by default: this was wrong since this should almost
16696 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
16697 the encrypted data type: this is a more sensible place to put it and it
16698 allows the PKCS#12 code to be tidied up that duplicated this
16703 * Changed obj_dat.pl script so it takes its input and output files on
16704 the command line. This should avoid shell escape redirection problems
16709 * Initial support for certificate extension requests, these are included
16710 in things like Xenroll certificate requests. Included functions to allow
16711 extensions to be obtained and added.
16715 * -crlf option to s_client and s_server for sending newlines as
16716 CRLF (as required by many protocols).
16720 ### Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
16722 * Install libRSAglue.a when OpenSSL is built with RSAref.
16724 *Ralf S. Engelschall*
16726 * A few more `#ifndef NO_FP_API / #endif` pairs for consistency.
16728 *Andrija Antonijevic <TheAntony2@bigfoot.com>*
16730 * Fix -startdate and -enddate (which was missing) arguments to 'ca'
16735 * New function DSA_dup_DH, which duplicates DSA parameters/keys as
16736 DH parameters/keys (q is lost during that conversion, but the resulting
16737 DH parameters contain its length).
16739 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
16740 much faster than DH_generate_parameters (which creates parameters
16741 where `p = 2*q + 1`), and also the smaller q makes DH computations
16742 much more efficient (160-bit exponentiation instead of 1024-bit
16743 exponentiation); so this provides a convenient way to support DHE
16744 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
16745 utter importance to use
16746 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
16748 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
16749 when such DH parameters are used, because otherwise small subgroup
16750 attacks may become possible!
16754 * Avoid memory leak in i2d_DHparams.
16758 * Allow the -k option to be used more than once in the enc program:
16759 this allows the same encrypted message to be read by multiple recipients.
16763 * New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
16764 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
16765 it will always use the numerical form of the OID, even if it has a short
16770 * Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
16771 method only got called if p,q,dmp1,dmq1,iqmp components were present,
16772 otherwise bn_mod_exp was called. In the case of hardware keys for example
16773 no private key components need be present and it might store extra data
16774 in the RSA structure, which cannot be accessed from bn_mod_exp.
16775 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
16776 private key operations.
16780 * Added support for SPARC Linux.
16784 * pem_password_cb function type incompatibly changed from
16785 typedef int pem_password_cb(char *buf, int size, int rwflag);
16787 ....(char *buf, int size, int rwflag, void *userdata);
16788 so that applications can pass data to their callbacks:
16789 The `PEM[_ASN1]_{read,write}...` functions and macros now take an
16790 additional void * argument, which is just handed through whenever
16791 the password callback is called.
16793 *Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller*
16795 New function SSL_CTX_set_default_passwd_cb_userdata.
16797 Compatibility note: As many C implementations push function arguments
16798 onto the stack in reverse order, the new library version is likely to
16799 interoperate with programs that have been compiled with the old
16800 pem_password_cb definition (PEM_whatever takes some data that
16801 happens to be on the stack as its last argument, and the callback
16802 just ignores this garbage); but there is no guarantee whatsoever that
16805 * The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
16806 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
16807 problems not only on Windows, but also on some Unix platforms.
16808 To avoid problematic command lines, these definitions are now in an
16809 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
16810 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
16814 * MIPS III/IV assembler module is reimplemented.
16818 * More DES library cleanups: remove references to srand/rand and
16819 delete an unused file.
16823 * Add support for the free Netwide assembler (NASM) under Win32,
16824 since not many people have MASM (ml) and it can be hard to obtain.
16825 This is currently experimental but it seems to work OK and pass all
16826 the tests. Check out INSTALL.W32 for info.
16830 * Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
16831 without temporary keys kept an extra copy of the server key,
16832 and connections with temporary keys did not free everything in case
16837 * New function RSA_check_key and new openssl rsa option -check
16838 for verifying the consistency of RSA keys.
16840 *Ulf Moeller, Bodo Moeller*
16842 * Various changes to make Win32 compile work:
16843 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
16844 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
16845 comparison" warnings.
16846 3. Add `sk_<TYPE>_sort` to DEF file generator and do make update.
16850 * Add a debugging option to PKCS#5 v2 key generation function: when
16851 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
16852 derived keys are printed to stderr.
16856 * Copy the flags in ASN1_STRING_dup().
16858 *Roman E. Pavlov <pre@mo.msk.ru>*
16860 * The x509 application mishandled signing requests containing DSA
16861 keys when the signing key was also DSA and the parameters didn't match.
16863 It was supposed to omit the parameters when they matched the signing key:
16864 the verifying software was then supposed to automatically use the CA's
16865 parameters if they were absent from the end user certificate.
16867 Omitting parameters is no longer recommended. The test was also
16868 the wrong way round! This was probably due to unusual behaviour in
16869 EVP_cmp_parameters() which returns 1 if the parameters match.
16870 This meant that parameters were omitted when they *didn't* match and
16871 the certificate was useless. Certificates signed with 'ca' didn't have
16874 *Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>*
16876 * Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
16877 The interface is as follows:
16878 Applications can use
16879 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
16880 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
16881 "off" is now the default.
16882 The library internally uses
16883 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
16884 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
16885 to disable memory-checking temporarily.
16887 Some inconsistent states that previously were possible (and were
16888 even the default) are now avoided.
16890 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
16891 with each memory chunk allocated; this is occasionally more helpful
16892 than just having a counter.
16894 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
16896 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
16901 * Introduce "mode" for SSL structures (with defaults in SSL_CTX),
16902 which largely parallels "options", but is for changing API behaviour,
16903 whereas "options" are about protocol behaviour.
16904 Initial "mode" flags are:
16906 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
16907 a single record has been written.
16908 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
16909 retries use the same buffer location.
16910 (But all of the contents must be
16915 * Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
16918 * Fix problems with no-hmac etc.
16920 *Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>*
16922 * New functions RSA_get_default_method(), RSA_set_method() and
16923 RSA_get_method(). These allows replacement of RSA_METHODs without having
16924 to mess around with the internals of an RSA structure.
16928 * Fix memory leaks in DSA_do_sign and DSA_is_prime.
16929 Also really enable memory leak checks in openssl.c and in some
16932 *Chad C. Mulligan, Bodo Moeller*
16934 * Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
16935 up the length of negative integers. This has now been simplified to just
16936 store the length when it is first determined and use it later, rather
16937 than trying to keep track of where data is copied and updating it to
16939 *Steve Henson, reported by Brien Wheeler <bwheeler@authentica-security.com>*
16941 * Add a new function PKCS7_signatureVerify. This allows the verification
16942 of a PKCS#7 signature but with the signing certificate passed to the
16943 function itself. This contrasts with PKCS7_dataVerify which assumes the
16944 certificate is present in the PKCS#7 structure. This isn't always the
16945 case: certificates can be omitted from a PKCS#7 structure and be
16946 distributed by "out of band" means (such as a certificate database).
16950 * Complete the `PEM_*` macros with DECLARE_PEM versions to replace the
16951 function prototypes in pem.h, also change util/mkdef.pl to add the
16952 necessary function names.
16956 * mk1mf.pl (used by Windows builds) did not properly read the
16957 options set by Configure in the top level Makefile, and Configure
16958 was not even able to write more than one option correctly.
16959 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
16963 * New functions CONF_load_bio() and CONF_load_fp() to allow a config
16964 file to be loaded from a BIO or FILE pointer. The BIO version will
16965 for example allow memory BIOs to contain config info.
16969 * New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
16970 Whoever hopes to achieve shared-library compatibility across versions
16971 must use this, not the compile-time macro.
16972 (Exercise 0.9.4: Which is the minimum library version required by
16974 Note: All this applies only to multi-threaded programs, others don't
16979 * Add missing case to s3_clnt.c state machine -- one of the new SSL tests
16980 through a BIO pair triggered the default case, i.e.
16981 SSLerr(...,SSL_R_UNKNOWN_STATE).
16985 * New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
16986 can use the SSL library even if none of the specific BIOs is
16991 * Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
16992 for the encoded length.
16994 *Jeon KyoungHo <khjeon@sds.samsung.co.kr>*
16996 * Add initial documentation of the X509V3 functions.
17000 * Add a new pair of functions PEM_write_PKCS8PrivateKey() and
17001 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
17002 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
17003 secure PKCS#8 private key format with a high iteration count.
17007 * Fix determination of Perl interpreter: A perl or perl5
17008 *directory* in $PATH was also accepted as the interpreter.
17010 *Ralf S. Engelschall*
17012 * Fix demos/sign/sign.c: well there wasn't anything strictly speaking
17013 wrong with it but it was very old and did things like calling
17014 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
17015 unusual formatting.
17019 * Fix demos/selfsign.c: it used obsolete and deleted functions, changed
17020 to use the new extension code.
17024 * Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
17025 with macros. This should make it easier to change their form, add extra
17026 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
17031 * Add to configuration table a new entry that can specify an alternative
17032 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
17033 according to Mark Crispin <MRC@Panda.COM>.
17037 * DES CBC did not update the IV. Weird.
17041 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
17042 Changing the behaviour of the former might break existing programs --
17043 where IV updating is needed, des_ncbc_encrypt can be used.
17046 * When bntest is run from "make test" it drives bc to check its
17047 calculations, as well as internally checking them. If an internal check
17048 fails, it needs to cause bc to give a non-zero result or make test carries
17049 on without noticing the failure. Fixed.
17053 * DES library cleanups.
17057 * Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
17058 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
17059 ciphers. NOTE: although the key derivation function has been verified
17060 against some published test vectors it has not been extensively tested
17061 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
17066 * Instead of "mkdir -p", which is not fully portable, use new
17067 Perl script "util/mkdir-p.pl".
17071 * Rewrite the way password based encryption (PBE) is handled. It used to
17072 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
17073 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
17074 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
17075 the 'parameter' field of the AlgorithmIdentifier is passed to the
17076 underlying key generation function so it must do its own ASN1 parsing.
17077 This has also changed the EVP_PBE_CipherInit() function which now has a
17078 'parameter' argument instead of literal salt and iteration count values
17079 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
17083 * Support for PKCS#5 v1.5 compatible password based encryption algorithms
17084 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
17085 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
17086 KEY" because this clashed with PKCS#8 unencrypted string. Since this
17087 value was just used as a "magic string" and not used directly its
17088 value doesn't matter.
17092 * Introduce some semblance of const correctness to BN. Shame C doesn't
17097 * "linux-sparc64" configuration (ultrapenguin).
17099 *Ray Miller <ray.miller@oucs.ox.ac.uk>*
17100 "linux-sparc" configuration.
17102 *Christian Forster <fo@hawo.stw.uni-erlangen.de>*
17104 * config now generates no-xxx options for missing ciphers.
17108 * Support the EBCDIC character set (work in progress).
17109 File ebcdic.c not yet included because it has a different license.
17111 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
17113 * Support BS2000/OSD-POSIX.
17115 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
17117 * Make callbacks for key generation use `void *` instead of `char *`.
17121 * Make S/MIME samples compile (not yet tested).
17125 * Additional typesafe stacks.
17129 * New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
17133 ### Changes between 0.9.3 and 0.9.3a [29 May 1999]
17135 * New configuration variant "sco5-gcc".
17137 * Updated some demos.
17139 *Sean O Riordain, Wade Scholine*
17141 * Add missing BIO_free at exit of pkcs12 application.
17145 * Fix memory leak in conf.c.
17149 * Updates for Win32 to assembler version of MD5.
17153 * Set #! path to perl in apps/der_chop to where we found it
17154 instead of using a fixed path.
17158 * SHA library changes for irix64-mips4-cc.
17162 * Improvements for VMS support.
17166 ### Changes between 0.9.2b and 0.9.3 [24 May 1999]
17168 * Bignum library bug fix. IRIX 6 passes "make test" now!
17169 This also avoids the problems with SC4.2 and unpatched SC5.
17171 *Andy Polyakov <appro@fy.chalmers.se>*
17173 * New functions sk_num, sk_value and sk_set to replace the previous macros.
17174 These are required because of the typesafe stack would otherwise break
17175 existing code. If old code used a structure member which used to be STACK
17176 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
17177 sk_num or sk_value it would produce an error because the num, data members
17178 are not present in STACK_OF. Now it just produces a warning. sk_set
17179 replaces the old method of assigning a value to sk_value
17180 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
17181 that does this will no longer work (and should use sk_set instead) but
17182 this could be regarded as a "questionable" behaviour anyway.
17186 * Fix most of the other PKCS#7 bugs. The "experimental" code can now
17187 correctly handle encrypted S/MIME data.
17191 * Change type of various DES function arguments from des_cblock
17192 (which means, in function argument declarations, pointer to char)
17193 to des_cblock * (meaning pointer to array with 8 char elements),
17194 which allows the compiler to do more typechecking; it was like
17195 that back in SSLeay, but with lots of ugly casts.
17197 Introduce new type const_des_cblock.
17201 * Reorganise the PKCS#7 library and get rid of some of the more obvious
17202 problems: find RecipientInfo structure that matches recipient certificate
17203 and initialise the ASN1 structures properly based on passed cipher.
17207 * Belatedly make the BN tests actually check the results.
17211 * Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
17212 to and from BNs: it was completely broken. New compilation option
17213 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
17214 key elements as negative integers.
17218 * Reorganize and speed up MD5.
17220 *Andy Polyakov <appro@fy.chalmers.se>*
17224 *Richard Levitte <richard@levitte.org>*
17226 * New option -out to asn1parse to allow the parsed structure to be
17227 output to a file. This is most useful when combined with the -strparse
17228 option to examine the output of things like OCTET STRINGS.
17232 * Make SSL library a little more fool-proof by not requiring any longer
17233 that `SSL_set_{accept,connect}_state` be called before
17234 `SSL_{accept,connect}` may be used (`SSL_set_..._state` is omitted
17235 in many applications because usually everything *appeared* to work as
17236 intended anyway -- now it really works as intended).
17240 * Move openssl.cnf out of lib/.
17244 * Fix various things to let OpenSSL even pass "egcc -pipe -O2 -Wall
17245 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
17246 -Wmissing-declarations -Wnested-externs -Winline" with EGCS 1.1.2+
17248 *Ralf S. Engelschall*
17250 * Various fixes to the EVP and PKCS#7 code. It may now be able to
17251 handle PKCS#7 enveloped data properly.
17253 *Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve*
17255 * Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
17256 copying pointers. The cert_st handling is changed by this in
17257 various ways (and thus what used to be known as ctx->default_cert
17258 is now called ctx->cert, since we don't resort to `s->ctx->[default_]cert`
17259 any longer when s->cert does not give us what we need).
17260 ssl_cert_instantiate becomes obsolete by this change.
17261 As soon as we've got the new code right (possibly it already is?),
17262 we have solved a couple of bugs of the earlier code where s->cert
17263 was used as if it could not have been shared with other SSL structures.
17265 Note that using the SSL API in certain dirty ways now will result
17266 in different behaviour than observed with earlier library versions:
17267 Changing settings for an `SSL_CTX *ctx` after having done s = SSL_new(ctx)
17268 does not influence s as it used to.
17270 In order to clean up things more thoroughly, inside SSL_SESSION
17271 we don't use CERT any longer, but a new structure SESS_CERT
17272 that holds per-session data (if available); currently, this is
17273 the peer's certificate chain and, for clients, the server's certificate
17274 and temporary key. CERT holds only those values that can have
17275 meaningful defaults in an SSL_CTX.
17279 * New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
17280 from the internal representation. Various PKCS#7 fixes: remove some
17281 evil casts and set the enc_dig_alg field properly based on the signing
17286 * Allow PKCS#12 password to be set from the command line or the
17287 environment. Let 'ca' get its config file name from the environment
17288 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
17293 * Allow certificate policies extension to use an IA5STRING for the
17294 organization field. This is contrary to the PKIX definition but
17295 VeriSign uses it and IE5 only recognises this form. Document 'x509'
17300 * Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
17301 without disallowing inline assembler and the like for non-pedantic builds.
17305 * Support Borland C++ builder.
17307 *Janez Jere <jj@void.si>, modified by Ulf Möller*
17313 * SHA-1 cleanups and performance enhancements.
17315 *Andy Polyakov <appro@fy.chalmers.se>*
17317 * Sparc v8plus assembler for the bignum library.
17319 *Andy Polyakov <appro@fy.chalmers.se>*
17321 * Accept any -xxx and +xxx compiler options in Configure.
17325 * Update HPUX configuration.
17329 * Add missing `sk_<type>_unshift()` function to safestack.h
17331 *Ralf S. Engelschall*
17333 * New function SSL_CTX_use_certificate_chain_file that sets the
17334 "extra_cert"s in addition to the certificate. (This makes sense
17335 only for "PEM" format files, as chains as a whole are not
17340 * Support verify_depth from the SSL API.
17341 x509_vfy.c had what can be considered an off-by-one-error:
17342 Its depth (which was not part of the external interface)
17343 was actually counting the number of certificates in a chain;
17344 now it really counts the depth.
17348 * Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
17349 instead of X509err, which often resulted in confusing error
17350 messages since the error codes are not globally unique
17351 (e.g. an alleged error in ssl3_accept when a certificate
17352 didn't match the private key).
17354 * New function SSL_CTX_set_session_id_context that allows to set a default
17355 value (so that you don't need SSL_set_session_id_context for each
17356 connection using the SSL_CTX).
17360 * OAEP decoding bug fix.
17364 * Support INSTALL_PREFIX for package builders, as proposed by
17369 * New Configure options "threads" and "no-threads". For systems
17370 where the proper compiler options are known (currently Solaris
17371 and Linux), "threads" is the default.
17375 * New script util/mklink.pl as a faster substitute for util/mklink.sh.
17379 * Install various scripts to $(OPENSSLDIR)/misc, not to
17380 $(INSTALLTOP)/bin -- they shouldn't clutter directories
17381 such as /usr/local/bin.
17385 * "make linux-shared" to build shared libraries.
17387 *Niels Poppe <niels@netbox.org>*
17389 * New Configure option `no-<cipher>` (rsa, idea, rc5, ...).
17393 * Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
17394 extension adding in x509 utility.
17398 * Remove NOPROTO sections and error code comments.
17402 * Partial rewrite of the DEF file generator to now parse the ANSI
17407 * New Configure options --prefix=DIR and --openssldir=DIR.
17411 * Complete rewrite of the error code script(s). It is all now handled
17412 by one script at the top level which handles error code gathering,
17413 header rewriting and C source file generation. It should be much better
17414 than the old method: it now uses a modified version of Ulf's parser to
17415 read the ANSI prototypes in all header files (thus the old K&R definitions
17416 aren't needed for error creation any more) and do a better job of
17417 translating function codes into names. The old 'ASN1 error code embedded
17418 in a comment' is no longer necessary and it doesn't use .err files which
17419 have now been deleted. Also the error code call doesn't have to appear all
17420 on one line (which resulted in some large lines...).
17424 * Change #include filenames from `<foo.h>` to `<openssl/foo.h>`.
17428 * Change behaviour of ssl2_read when facing length-0 packets: Don't return
17429 0 (which usually indicates a closed connection), but continue reading.
17433 * Fix some race conditions.
17437 * Add support for CRL distribution points extension. Add Certificate
17438 Policies and CRL distribution points documentation.
17442 * Move the autogenerated header file parts to crypto/opensslconf.h.
17446 * Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
17447 8 of keying material. Merlin has also confirmed interop with this fix
17448 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
17450 *Merlin Hughes <merlin@baltimore.ie>*
17452 * Fix lots of warnings.
17454 *Richard Levitte <levitte@stacken.kth.se>*
17456 * In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
17457 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
17459 *Richard Levitte <levitte@stacken.kth.se>*
17461 * Fix problems with sizeof(long) == 8.
17463 *Andy Polyakov <appro@fy.chalmers.se>*
17465 * Change functions to ANSI C.
17469 * Fix typos in error codes.
17471 *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller*
17473 * Remove defunct assembler files from Configure.
17477 * SPARC v8 assembler BIGNUM implementation.
17479 *Andy Polyakov <appro@fy.chalmers.se>*
17481 * Support for Certificate Policies extension: both print and set.
17482 Various additions to support the r2i method this uses.
17486 * A lot of constification, and fix a bug in X509_NAME_oneline() that could
17487 return a const string when you are expecting an allocated buffer.
17491 * Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
17492 types DirectoryString and DisplayText.
17496 * Add code to allow r2i extensions to access the configuration database,
17497 add an LHASH database driver and add several ctx helper functions.
17501 * Fix an evil bug in bn_expand2() which caused various BN functions to
17502 fail when they extended the size of a BIGNUM.
17506 * Various utility functions to handle SXNet extension. Modify mkdef.pl to
17507 support typesafe stack.
17511 * Fix typo in SSL_[gs]et_options().
17513 *Nils Frostberg <nils@medcom.se>*
17515 * Delete various functions and files that belonged to the (now obsolete)
17516 old X509V3 handling code.
17520 * New Configure option "rsaref".
17524 * Don't auto-generate pem.h.
17528 * Introduce type-safe ASN.1 SETs.
17532 * Convert various additional casted stacks to type-safe STACK_OF() variants.
17534 *Ben Laurie, Ralf S. Engelschall, Steve Henson*
17536 * Introduce type-safe STACKs. This will almost certainly break lots of code
17537 that links with OpenSSL (well at least cause lots of warnings), but fear
17538 not: the conversion is trivial, and it eliminates loads of evil casts. A
17539 few STACKed things have been converted already. Feel free to convert more.
17540 In the fullness of time, I'll do away with the STACK type altogether.
17544 * Add `openssl ca -revoke <certfile>` facility which revokes a certificate
17545 specified in `<certfile>` by updating the entry in the index.txt file.
17546 This way one no longer has to edit the index.txt file manually for
17547 revoking a certificate. The -revoke option does the gory details now.
17549 *Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall*
17551 * Fix `openssl crl -noout -text` combination where `-noout` killed the
17552 `-text` option at all and this way the `-noout -text` combination was
17553 inconsistent in `openssl crl` with the friends in `openssl x509|rsa|dsa`.
17555 *Ralf S. Engelschall*
17557 * Make sure a corresponding plain text error message exists for the
17558 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
17559 verify callback function determined that a certificate was revoked.
17561 *Ralf S. Engelschall*
17563 * Bugfix: In test/testenc, don't test `openssl <cipher>` for
17564 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
17565 all available ciphers including rc5, which was forgotten until now.
17566 In order to let the testing shell script know which algorithms
17567 are available, a new (up to now undocumented) command
17568 `openssl list-cipher-commands` is used.
17572 * Bugfix: s_client occasionally would sleep in select() when
17573 it should have checked SSL_pending() first.
17577 * New functions DSA_do_sign and DSA_do_verify to provide access to
17578 the raw DSA values prior to ASN.1 encoding.
17582 * Tweaks to Configure
17584 *Niels Poppe <niels@netbox.org>*
17586 * Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
17591 * New variables $(RANLIB) and $(PERL) in the Makefiles.
17595 * New config option to avoid instructions that are illegal on the 80386.
17596 The default code is faster, but requires at least a 486.
17600 * Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
17601 SSL2_SERVER_VERSION (not used at all) macros, which are now the
17602 same as SSL2_VERSION anyway.
17606 * New "-showcerts" option for s_client.
17610 * Still more PKCS#12 integration. Add pkcs12 application to openssl
17611 application. Various cleanups and fixes.
17615 * More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
17616 modify error routines to work internally. Add error codes and PBE init
17617 to library startup routines.
17621 * Further PKCS#12 integration. Added password based encryption, PKCS#8 and
17622 packing functions to asn1 and evp. Changed function names and error
17623 codes along the way.
17627 * PKCS12 integration: and so it begins... First of several patches to
17628 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
17629 objects to objects.h
17633 * Add a new 'indent' option to some X509V3 extension code. Initial ASN1
17634 and display support for Thawte strong extranet extension.
17638 * Add LinuxPPC support.
17640 *Jeff Dubrule <igor@pobox.org>*
17642 * Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
17643 bn_div_words in alpha.s.
17645 *Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie*
17647 * Make sure the RSA OAEP test is skipped under -DRSAref because
17648 OAEP isn't supported when OpenSSL is built with RSAref.
17650 *Ulf Moeller <ulf@fitug.de>*
17652 * Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
17653 so they no longer are missing under -DNOPROTO.
17655 *Soren S. Jorvang <soren@t.dk>*
17657 ### Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
17659 * Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
17660 doesn't work when the session is reused. Coming soon!
17664 * Fix a security hole, that allows sessions to be reused in the wrong
17665 context thus bypassing client cert protection! All software that uses
17666 client certs and session caches in multiple contexts NEEDS PATCHING to
17667 allow session reuse! A fuller solution is in the works.
17669 *Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)*
17671 * Some more source tree cleanups (removed obsolete files
17672 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
17673 permission on "config" script to be executable) and a fix for the INSTALL
17676 *Ulf Moeller <ulf@fitug.de>*
17678 * Remove some legacy and erroneous uses of malloc, free instead of
17681 *Lennart Bang <lob@netstream.se>, with minor changes by Steve*
17683 * Make rsa_oaep_test return non-zero on error.
17685 *Ulf Moeller <ulf@fitug.de>*
17687 * Add support for native Solaris shared libraries. Configure
17688 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
17689 if someone would make that last step automatic.
17691 *Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>*
17693 * ctx_size was not built with the right compiler during "make links". Fixed.
17697 * Change the meaning of 'ALL' in the cipher list. It now means "everything
17698 except NULL ciphers". This means the default cipher list will no longer
17699 enable NULL ciphers. They need to be specifically enabled e.g. with
17700 the string "DEFAULT:eNULL".
17704 * Fix to RSA private encryption routines: if p < q then it would
17705 occasionally produce an invalid result. This will only happen with
17706 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
17710 * Be less restrictive and allow also `perl util/perlpath.pl
17711 /path/to/bin/perl` in addition to `perl util/perlpath.pl /path/to/bin`,
17712 because this way one can also use an interpreter named `perl5` (which is
17713 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
17714 installed as `perl`).
17716 *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
17718 * Let util/clean-depend.pl work also with older Perl 5.00x versions.
17720 *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
17722 * Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
17723 advapi32.lib to Win32 build and change the pem test comparison
17724 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
17725 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
17726 and crypto/des/ede_cbcm_enc.c.
17730 * DES quad checksum was broken on big-endian architectures. Fixed.
17734 * Comment out two functions in bio.h that aren't implemented. Fix up the
17735 Win32 test batch file so it (might) work again. The Win32 test batch file
17736 is horrible: I feel ill....
17740 * Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
17741 in e_os.h. Audit of header files to check ANSI and non ANSI
17742 sections: 10 functions were absent from non ANSI section and not exported
17743 from Windows DLLs. Fixed up libeay.num for new functions.
17747 * Make `openssl version` output lines consistent.
17749 *Ralf S. Engelschall*
17751 * Fix Win32 symbol export lists for BIO functions: Added
17752 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
17753 to ms/libeay{16,32}.def.
17755 *Ralf S. Engelschall*
17757 * Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
17758 fine under Unix and passes some trivial tests I've now added. But the
17759 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
17760 added to make sure no one expects that this stuff really works in the
17761 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
17762 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
17765 *Ralf S. Engelschall*
17767 * Fix the generation of two part addresses in perl.
17769 *Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie*
17771 * Add config entry for Linux on MIPS.
17773 *John Tobey <jtobey@channel1.com>*
17775 * Make links whenever Configure is run, unless we are on Windoze.
17779 * Permit extensions to be added to CRLs using crl_section in openssl.cnf.
17780 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
17785 * Add a useful kludge to allow package maintainers to specify compiler and
17786 other platforms details on the command line without having to patch the
17787 Configure script every time: One now can use
17788 `perl Configure <id>:<details>`,
17789 i.e. platform ids are allowed to have details appended
17790 to them (separated by colons). This is treated as there would be a static
17791 pre-configured entry in Configure's %table under key `<id>` with value
17792 `<details>` and `perl Configure <id>` is called. So, when you want to
17793 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
17794 assembler stuff you can use `perl Configure "FreeBSD-elf:pgcc:-O6:::"`
17795 now, which overrides the FreeBSD-elf entry on-the-fly.
17797 *Ralf S. Engelschall*
17799 * Disable new TLS1 ciphersuites by default: they aren't official yet.
17803 * Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
17804 on the `perl Configure ...` command line. This way one can compile
17805 OpenSSL libraries with Position Independent Code (PIC) which is needed
17806 for linking it into DSOs.
17808 *Ralf S. Engelschall*
17810 * Remarkably, export ciphers were totally broken and no-one had noticed!
17815 * Cleaned up the LICENSE document: The official contact for any license
17816 questions now is the OpenSSL core team under openssl-core@openssl.org.
17817 And add a paragraph about the dual-license situation to make sure people
17818 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
17819 to the OpenSSL toolkit.
17821 *Ralf S. Engelschall*
17823 * General source tree makefile cleanups: Made `making xxx in yyy...`
17824 display consistent in the source tree and replaced `/bin/rm` by `rm`.
17825 Additionally cleaned up the `make links` target: Remove unnecessary
17826 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
17827 to speed processing and no longer clutter the display with confusing
17828 stuff. Instead only the actually done links are displayed.
17830 *Ralf S. Engelschall*
17832 * Permit null encryption ciphersuites, used for authentication only. It used
17833 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
17834 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
17839 * Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
17840 signed attributes when verifying signatures (this would break them),
17841 the detached data encoding was wrong and public keys obtained using
17842 X509_get_pubkey() weren't freed.
17846 * Add text documentation for the BUFFER functions. Also added a work around
17847 to a Win95 console bug. This was triggered by the password read stuff: the
17848 last character typed gets carried over to the next fread(). If you were
17849 generating a new cert request using 'req' for example then the last
17850 character of the passphrase would be CR which would then enter the first
17855 * Added the new 'Includes OpenSSL Cryptography Software' button as
17856 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
17857 button and can be used by applications based on OpenSSL to show the
17858 relationship to the OpenSSL project.
17860 *Ralf S. Engelschall*
17862 * Remove confusing variables in function signatures in files
17863 ssl/ssl_lib.c and ssl/ssl.h.
17865 *Lennart Bong <lob@kulthea.stacken.kth.se>*
17867 * Don't install bss_file.c under PREFIX/include/
17869 *Lennart Bong <lob@kulthea.stacken.kth.se>*
17871 * Get the Win32 compile working again. Modify mkdef.pl so it can handle
17872 functions that return function pointers and has support for NT specific
17873 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
17874 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
17875 unsigned to signed types: this was killing the Win32 compile.
17879 * Add new certificate file to stack functions,
17880 SSL_add_dir_cert_subjects_to_stack() and
17881 SSL_add_file_cert_subjects_to_stack(). These largely supplant
17882 SSL_load_client_CA_file(), and can be used to add multiple certs easily
17883 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
17884 This means that Apache-SSL and similar packages don't have to mess around
17885 to add as many CAs as they want to the preferred list.
17889 * Experiment with doxygen documentation. Currently only partially applied to
17891 See <http://www.stack.nl/~dimitri/doxygen/index.html>, and run doxygen with
17892 openssl.doxy as the configuration file.
17896 * Get rid of remaining C++-style comments which strict C compilers hate.
17898 *Ralf S. Engelschall, pointed out by Carlos Amengual*
17900 * Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
17901 compiled in by default: it has problems with large keys.
17905 * Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
17906 DH private keys and/or callback functions which directly correspond to
17907 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
17908 is needed for applications which have to configure certificates on a
17909 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
17911 For the RSA certificate situation is makes no difference, but
17912 for the DSA certificate situation this fixes the "no shared cipher"
17913 problem where the OpenSSL cipher selection procedure failed because the
17914 temporary keys were not overtaken from the context and the API provided
17915 no way to reconfigure them.
17916 The new functions now let applications reconfigure the stuff and they
17917 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
17918 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
17919 non-public-API function ssl_cert_instantiate() is used as a helper
17920 function and also to reduce code redundancy inside ssl_rsa.c.
17922 *Ralf S. Engelschall*
17924 * Move s_server -dcert and -dkey options out of the undocumented feature
17925 area because they are useful for the DSA situation and should be
17926 recognized by the users.
17928 *Ralf S. Engelschall*
17930 * Fix the cipher decision scheme for export ciphers: the export bits are
17931 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
17932 SSL_EXP_MASK. So, the original variable has to be used instead of the
17933 already masked variable.
17935 *Richard Levitte <levitte@stacken.kth.se>*
17937 * Fix `port` variable from `int` to `unsigned int` in crypto/bio/b_sock.c
17939 *Richard Levitte <levitte@stacken.kth.se>*
17941 * Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
17942 from `int` to `unsigned int` because it is a length and initialized by
17943 EVP_DigestFinal() which expects an `unsigned int *`.
17945 *Richard Levitte <levitte@stacken.kth.se>*
17947 * Don't hard-code path to Perl interpreter on shebang line of Configure
17948 script. Instead use the usual Shell->Perl transition trick.
17950 *Ralf S. Engelschall*
17952 * Make `openssl x509 -noout -modulus`' functional also for DSA certificates
17953 (in addition to RSA certificates) to match the behaviour of `openssl dsa
17954 -noout -modulus` as it's already the case for `openssl rsa -noout
17955 -modulus`. For RSA the -modulus is the real "modulus" while for DSA
17956 currently the public key is printed (a decision which was already done by
17957 `openssl dsa -modulus` in the past) which serves a similar purpose.
17958 Additionally the NO_RSA no longer completely removes the whole -modulus
17959 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
17962 *Ralf S. Engelschall*
17964 * Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
17965 BIO. See the source (crypto/evp/bio_ok.c) for more info.
17967 *Arne Ansper <arne@ats.cyber.ee>*
17969 * Dump the old yucky req code that tried (and failed) to allow raw OIDs
17970 to be added. Now both 'req' and 'ca' can use new objects defined in the
17975 * Add cool BIO that does syslog (or event log on NT).
17977 *Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie*
17979 * Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
17980 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
17981 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
17982 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
17986 * Add preliminary config info for new extension code.
17990 * Make RSA_NO_PADDING really use no padding.
17992 *Ulf Moeller <ulf@fitug.de>*
17994 * Generate errors when private/public key check is done.
17998 * Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
17999 for some CRL extensions and new objects added.
18003 * Really fix the ASN1 IMPLICIT bug this time... Partial support for private
18004 key usage extension and fuller support for authority key id.
18008 * Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
18009 padding method for RSA, which is recommended for new applications in PKCS
18010 #1 v2.0 (RFC 2437, October 1998).
18011 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
18012 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
18013 against Bleichbacher's attack on RSA.
18014 *Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
18017 * Updates to the new SSL compression code
18019 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18021 * Fix so that the version number in the master secret, when passed
18022 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
18023 (because the server will not accept higher), that the version number
18024 is 0x03,0x01, not 0x03,0x00
18026 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18028 * Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
18029 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
18030 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
18034 * Support for RAW extensions where an arbitrary extension can be
18035 created by including its DER encoding. See apps/openssl.cnf for
18040 * Make sure latest Perl versions don't interpret some generated C array
18041 code as Perl array code in the crypto/err/err_genc.pl script.
18043 *Lars Weber <3weber@informatik.uni-hamburg.de>*
18045 * Modify ms/do_ms.bat to not generate assembly language makefiles since
18046 not many people have the assembler. Various Win32 compilation fixes and
18047 update to the INSTALL.W32 file with (hopefully) more accurate Win32
18048 build instructions.
18052 * Modify configure script 'Configure' to automatically create crypto/date.h
18053 file under Win32 and also build pem.h from pem.org. New script
18054 util/mkfiles.pl to create the MINFO file on environments that can't do a
18055 'make files': perl util/mkfiles.pl >MINFO should work.
18059 * Major rework of DES function declarations, in the pursuit of correctness
18060 and purity. As a result, many evil casts evaporated, and some weirdness,
18061 too. You may find this causes warnings in your code. Zapping your evil
18062 casts will probably fix them. Mostly.
18066 * Fix for a typo in asn1.h. Bug fix to object creation script
18067 obj_dat.pl. It considered a zero in an object definition to mean
18068 "end of object": none of the objects in objects.h have any zeros
18069 so it wasn't spotted.
18071 *Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>*
18073 * Add support for Triple DES Cipher Block Chaining with Output Feedback
18074 Masking (CBCM). In the absence of test vectors, the best I have been able
18075 to do is check that the decrypt undoes the encrypt, so far. Send me test
18076 vectors if you have them.
18080 * Correct calculation of key length for export ciphers (too much space was
18081 allocated for null ciphers). This has not been tested!
18085 * Modifications to the mkdef.pl for Win32 DEF file creation. The usage
18086 message is now correct (it understands "crypto" and "ssl" on its
18087 command line). There is also now an "update" option. This will update
18088 the util/ssleay.num and util/libeay.num files with any new functions.
18090 perl util/mkdef.pl crypto ssl update
18091 it will update them.
18095 * Overhauled the Perl interface:
18096 - ported BN stuff to OpenSSL's different BN library
18097 - made the perl/ source tree CVS-aware
18098 - renamed the package from SSLeay to OpenSSL (the files still contain
18099 their history because I've copied them in the repository)
18100 - removed obsolete files (the test scripts will be replaced
18101 by better Test::Harness variants in the future)
18103 *Ralf S. Engelschall*
18105 * First cut for a very conservative source tree cleanup:
18106 1. merge various obsolete readme texts into doc/ssleay.txt
18107 where we collect the old documents and readme texts.
18108 2. remove the first part of files where I'm already sure that we no
18109 longer need them because of three reasons: either they are just temporary
18110 files which were left by Eric or they are preserved original files where
18111 I've verified that the diff is also available in the CVS via "cvs diff
18112 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
18113 the crypto/md/ stuff).
18115 *Ralf S. Engelschall*
18117 * More extension code. Incomplete support for subject and issuer alt
18118 name, issuer and authority key id. Change the i2v function parameters
18119 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
18120 what that's for :-) Fix to ASN1 macro which messed up
18121 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
18125 * Preliminary support for ENUMERATED type. This is largely copied from the
18130 * Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
18132 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18134 * Make sure `make rehash` target really finds the `openssl` program.
18136 *Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
18138 * Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
18139 like to hear about it if this slows down other processors.
18143 * Add CygWin32 platform information to Configure script.
18145 *Alan Batie <batie@aahz.jf.intel.com>*
18147 * Fixed ms/32all.bat script: `no_asm` -> `no-asm`
18149 *Rainer W. Gerling <gerling@mpg-gv.mpg.de>*
18151 * New program nseq to manipulate netscape certificate sequences
18155 * Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
18160 * Fixes to BN code. Previously the default was to define BN_RECURSION
18161 but the BN code had some problems that would cause failures when
18162 doing certificate verification and some other functions.
18164 *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
18166 * Add ASN1 and PEM code to support netscape certificate sequences.
18170 * Add ASN1 and PEM code to support netscape certificate sequences.
18174 * Add several PKIX and private extended key usage OIDs.
18178 * Modify the 'ca' program to handle the new extension code. Modify
18179 openssl.cnf for new extension format, add comments.
18183 * More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
18184 and add a sample to openssl.cnf so req -x509 now adds appropriate
18189 * Continued X509 V3 changes. Add to other makefiles, integrate with the
18190 error code, add initial support to X509_print() and x509 application.
18194 * Takes a deep breath and start adding X509 V3 extension support code. Add
18195 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
18196 stuff is currently isolated and isn't even compiled yet.
18200 * Continuing patches for GeneralizedTime. Fix up certificate and CRL
18201 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
18202 Removed the versions check from X509 routines when loading extensions:
18203 this allows certain broken certificates that don't set the version
18204 properly to be processed.
18208 * Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
18209 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
18210 can still be regenerated with "make depend".
18214 * Spelling mistake in C version of CAST-128.
18216 *Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>*
18218 * Changes to the error generation code. The perl script err-code.pl
18219 now reads in the old error codes and retains the old numbers, only
18220 adding new ones if necessary. It also only changes the .err files if new
18221 codes are added. The makefiles have been modified to only insert errors
18222 when needed (to avoid needlessly modifying header files). This is done
18223 by only inserting errors if the .err file is newer than the auto generated
18224 C file. To rebuild all the error codes from scratch (the old behaviour)
18225 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
18226 or delete all the .err files.
18230 * CAST-128 was incorrectly implemented for short keys. The C version has
18231 been fixed, but is untested. The assembler versions are also fixed, but
18232 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
18233 to regenerate it if needed.
18234 *Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
18235 Hagino <itojun@kame.net>*
18237 * File was opened incorrectly in randfile.c.
18239 *Ulf Möller <ulf@fitug.de>*
18241 * Beginning of support for GeneralizedTime. d2i, i2d, check and print
18242 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
18243 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
18244 al: it's just almost always a UTCTime. Note this patch adds new error
18245 codes so do a "make errors" if there are problems.
18249 * Correct Linux 1 recognition in config.
18251 *Ulf Möller <ulf@fitug.de>*
18253 * Remove pointless MD5 hash when using DSA keys in ca.
18255 *Anonymous <nobody@replay.com>*
18257 * Generate an error if given an empty string as a cert directory. Also
18258 generate an error if handed NULL (previously returned 0 to indicate an
18259 error, but didn't set one).
18261 *Ben Laurie, reported by Anonymous <nobody@replay.com>*
18263 * Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
18267 * Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
18268 parameters. This was causing a warning which killed off the Win32 compile.
18272 * Remove C++ style comments from crypto/bn/bn_local.h.
18274 *Neil Costigan <neil.costigan@celocom.com>*
18276 * The function OBJ_txt2nid was broken. It was supposed to return a nid
18277 based on a text string, looking up short and long names and finally
18278 "dot" format. The "dot" format stuff didn't work. Added new function
18279 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
18280 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
18281 OID is not part of the table.
18285 * Add prototypes to X509 lookup/verify methods, fixing a bug in
18286 X509_LOOKUP_by_alias().
18290 * Sort openssl functions by name.
18294 * Get the gendsa program working (hopefully) and add it to app list. Remove
18295 encryption from sample DSA keys (in case anyone is interested the password
18300 * Make *all* `*_free` functions accept a NULL pointer.
18302 *Frans Heymans <fheymans@isaserver.be>*
18304 * If a DH key is generated in s3_srvr.c, don't blow it by trying to use
18307 *Anonymous <nobody@replay.com>*
18309 * s_server should send the CAfile as acceptable CAs, not its own cert.
18311 *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
18313 * Don't blow it for numeric -newkey arguments to apps/req.
18315 *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
18317 * Temp key "for export" tests were wrong in s3_srvr.c.
18319 *Anonymous <nobody@replay.com>*
18321 * Add prototype for temp key callback functions
18322 SSL_CTX_set_tmp_{rsa,dh}_callback().
18326 * Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
18327 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
18331 * X509_name_add_entry() freed the wrong thing after an error.
18333 *Arne Ansper <arne@ats.cyber.ee>*
18335 * rsa_eay.c would attempt to free a NULL context.
18337 *Arne Ansper <arne@ats.cyber.ee>*
18339 * BIO_s_socket() had a broken should_retry() on Windoze.
18341 *Arne Ansper <arne@ats.cyber.ee>*
18343 * BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
18345 *Arne Ansper <arne@ats.cyber.ee>*
18347 * Make sure the already existing X509_STORE->depth variable is initialized
18348 in X509_STORE_new(), but document the fact that this variable is still
18349 unused in the certificate verification process.
18351 *Ralf S. Engelschall*
18353 * Fix the various library and apps files to free up pkeys obtained from
18354 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
18358 * Fix reference counting in X509_PUBKEY_get(). This makes
18359 demos/maurice/example2.c work, amongst others, probably.
18361 *Steve Henson and Ben Laurie*
18363 * First cut of a cleanup for apps/. First the `ssleay` program is now named
18364 `openssl` and second, the shortcut symlinks for the `openssl <command>`
18365 are no longer created. This way we have a single and consistent command
18366 line interface `openssl <command>`, similar to `cvs <command>`.
18368 *Ralf S. Engelschall, Paul Sutton and Ben Laurie*
18370 * ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
18371 BIT STRING wrapper always have zero unused bits.
18375 * Add CA.pl, perl version of CA.sh, add extended key usage OID.
18379 * Make the top-level INSTALL documentation easier to understand.
18383 * Makefiles updated to exit if an error occurs in a sub-directory
18384 make (including if user presses ^C) [Paul Sutton]
18386 * Make Montgomery context stuff explicit in RSA data structure.
18390 * Fix build order of pem and err to allow for generated pem.h.
18394 * Fix renumbering bug in X509_NAME_delete_entry().
18398 * Enhanced the err-ins.pl script so it makes the error library number
18399 global and can add a library name. This is needed for external ASN1 and
18400 other error libraries.
18404 * Fixed sk_insert which never worked properly.
18408 * Fix ASN1 macros so they can handle indefinite length constructed
18409 EXPLICIT tags. Some non standard certificates use these: they can now
18414 * Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
18415 into a single doc/ssleay.txt bundle. This way the information is still
18416 preserved but no longer messes up this directory. Now it's new room for
18417 the new set of documentation files.
18419 *Ralf S. Engelschall*
18421 * SETs were incorrectly DER encoded. This was a major pain, because they
18422 shared code with SEQUENCEs, which aren't coded the same. This means that
18423 almost everything to do with SETs or SEQUENCEs has either changed name or
18424 number of arguments.
18426 *Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>*
18428 * Fix test data to work with the above.
18432 * Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
18433 was already fixed by Eric for 0.9.1 it seems.
18435 *Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>*
18437 * Autodetect FreeBSD3.
18441 * Fix various bugs in Configure. This affects the following platforms:
18445 unixware-2.0-pentium
18450 * Eliminate generated files from CVS. Reorder tests to regenerate files
18451 before they are needed.
18455 * Generate Makefile.ssl from Makefile.org (to keep CVS happy).
18459 ### Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
18461 * Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
18462 changed SSLeay to OpenSSL in version strings.
18464 *Ralf S. Engelschall*
18466 * Some fixups to the top-level documents.
18470 * Fixed the nasty bug where rsaref.h was not found under compile-time
18471 because the symlink to include/ was missing.
18473 *Ralf S. Engelschall*
18475 * Incorporated the popular no-RSA/DSA-only patches
18476 which allow to compile a RSA-free SSLeay.
18478 *Andrew Cooke / Interrader Ldt., Ralf S. Engelschall*
18480 * Fixed nasty rehash problem under `make -f Makefile.ssl links`
18481 when "ssleay" is still not found.
18483 *Ralf S. Engelschall*
18485 * Added more platforms to Configure: Cray T3E, HPUX 11,
18487 *Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>*
18489 * Updated the README file.
18491 *Ralf S. Engelschall*
18493 * Added various .cvsignore files in the CVS repository subdirs
18494 to make a "cvs update" really silent.
18496 *Ralf S. Engelschall*
18498 * Recompiled the error-definition header files and added
18499 missing symbols to the Win32 linker tables.
18501 *Ralf S. Engelschall*
18503 * Cleaned up the top-level documents;
18504 o new files: CHANGES and LICENSE
18505 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
18506 o merged COPYRIGHT into LICENSE
18507 o removed obsolete TODO file
18508 o renamed MICROSOFT to INSTALL.W32
18510 *Ralf S. Engelschall*
18512 * Removed dummy files from the 0.9.1b source tree:
18513 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
18514 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
18515 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
18516 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
18517 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
18519 *Ralf S. Engelschall*
18521 * Added various platform portability fixes.
18525 * The Genesis of the OpenSSL rpject:
18526 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
18527 Young and Tim J. Hudson created while they were working for C2Net until
18530 *The OpenSSL Project*
18532 ### Changes between 0.9.0b and 0.9.1b [not released]
18534 * Updated a few CA certificates under certs/
18538 * Changed some BIGNUM api stuff.
18542 * Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
18543 DGUX x86, Linux Alpha, etc.
18547 * New COMP library [crypto/comp/] for SSL Record Layer Compression:
18548 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
18553 * Add -strparse option to asn1pars program which parses nested
18556 *Dr Stephen Henson <shenson@bigfoot.com>*
18558 * Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
18562 * DSA fix for "ca" program.
18566 * Added "-genkey" option to "dsaparam" program.
18570 * Added RIPE MD160 (rmd160) message digest.
18574 * Added -a (all) option to "ssleay version" command.
18578 * Added PLATFORM define which is the id given to Configure.
18582 * Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
18586 * Extended the ASN.1 parser routines.
18590 * Extended BIO routines to support REUSEADDR, seek, tell, etc.
18594 * Added a BN_CTX to the BN library.
18598 * Fixed the weak key values in DES library
18602 * Changed API in EVP library for cipher aliases.
18606 * Added support for RC2/64bit cipher.
18610 * Converted the lhash library to the crypto/mem.c functions.
18614 * Added more recognized ASN.1 object ids.
18618 * Added more RSA padding checks for SSL/TLS.
18622 * Added BIO proxy/filter functionality.
18626 * Added extra_certs to SSL_CTX which can be used
18627 send extra CA certificates to the client in the CA cert chain sending
18628 process. It can be configured with SSL_CTX_add_extra_chain_cert().
18632 * Now Fortezza is denied in the authentication phase because
18633 this is key exchange mechanism is not supported by SSLeay at all.
18637 * Additional PKCS1 checks.
18641 * Support the string "TLSv1" for all TLS v1 ciphers.
18645 * Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
18646 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
18650 * Fixed a few memory leaks.
18654 * Fixed various code and comment typos.
18658 * A minor bug in ssl/s3_clnt.c where there would always be 4 0
18659 bytes sent in the client random.
18661 *Edward Bishop <ebishop@spyglass.com>*
18665 [CVE-2020-1967]: https://www.openssl.org/news/vulnerabilities.html#CVE-2020-1967
18666 [CVE-2019-1563]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1563
18667 [CVE-2019-1559]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1559
18668 [CVE-2019-1552]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1552
18669 [CVE-2019-1551]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1551
18670 [CVE-2019-1549]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1549
18671 [CVE-2019-1547]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1547
18672 [CVE-2019-1543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2019-1543
18673 [CVE-2018-5407]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-5407
18674 [CVE-2018-0739]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0739
18675 [CVE-2018-0737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0737
18676 [CVE-2018-0735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0735
18677 [CVE-2018-0734]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0734
18678 [CVE-2018-0733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0733
18679 [CVE-2018-0732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2018-0732
18680 [CVE-2017-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3738
18681 [CVE-2017-3737]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3737
18682 [CVE-2017-3736]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3736
18683 [CVE-2017-3735]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3735
18684 [CVE-2017-3733]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3733
18685 [CVE-2017-3732]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3732
18686 [CVE-2017-3731]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3731
18687 [CVE-2017-3730]: https://www.openssl.org/news/vulnerabilities.html#CVE-2017-3730
18688 [CVE-2016-7055]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7055
18689 [CVE-2016-7054]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7054
18690 [CVE-2016-7053]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7053
18691 [CVE-2016-7052]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-7052
18692 [CVE-2016-6309]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6309
18693 [CVE-2016-6308]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6308
18694 [CVE-2016-6307]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6307
18695 [CVE-2016-6306]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6306
18696 [CVE-2016-6305]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6305
18697 [CVE-2016-6304]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6304
18698 [CVE-2016-6303]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6303
18699 [CVE-2016-6302]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-6302
18700 [CVE-2016-2183]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2183
18701 [CVE-2016-2182]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2182
18702 [CVE-2016-2181]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2181
18703 [CVE-2016-2180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2180
18704 [CVE-2016-2179]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2179
18705 [CVE-2016-2178]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2178
18706 [CVE-2016-2177]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2177
18707 [CVE-2016-2176]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2176
18708 [CVE-2016-2109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2109
18709 [CVE-2016-2107]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2107
18710 [CVE-2016-2106]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2106
18711 [CVE-2016-2105]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-2105
18712 [CVE-2016-0800]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0800
18713 [CVE-2016-0799]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0799
18714 [CVE-2016-0798]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0798
18715 [CVE-2016-0797]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0797
18716 [CVE-2016-0705]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0705
18717 [CVE-2016-0702]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0702
18718 [CVE-2016-0701]: https://www.openssl.org/news/vulnerabilities.html#CVE-2016-0701
18719 [CVE-2015-3197]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3197
18720 [CVE-2015-3196]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3196
18721 [CVE-2015-3195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3195
18722 [CVE-2015-3194]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3194
18723 [CVE-2015-3193]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-3193
18724 [CVE-2015-1793]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1793
18725 [CVE-2015-1792]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1792
18726 [CVE-2015-1791]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1791
18727 [CVE-2015-1790]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1790
18728 [CVE-2015-1789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1789
18729 [CVE-2015-1788]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1788
18730 [CVE-2015-1787]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-1787
18731 [CVE-2015-0293]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0293
18732 [CVE-2015-0291]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0291
18733 [CVE-2015-0290]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0290
18734 [CVE-2015-0289]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0289
18735 [CVE-2015-0288]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0288
18736 [CVE-2015-0287]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0287
18737 [CVE-2015-0286]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0286
18738 [CVE-2015-0285]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0285
18739 [CVE-2015-0209]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0209
18740 [CVE-2015-0208]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0208
18741 [CVE-2015-0207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0207
18742 [CVE-2015-0206]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0206
18743 [CVE-2015-0205]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0205
18744 [CVE-2015-0204]: https://www.openssl.org/news/vulnerabilities.html#CVE-2015-0204
18745 [CVE-2014-8275]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-8275
18746 [CVE-2014-5139]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-5139
18747 [CVE-2014-3572]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3572
18748 [CVE-2014-3571]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3571
18749 [CVE-2014-3570]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3570
18750 [CVE-2014-3569]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3569
18751 [CVE-2014-3568]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3568
18752 [CVE-2014-3567]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3567
18753 [CVE-2014-3566]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3566
18754 [CVE-2014-3513]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3513
18755 [CVE-2014-3512]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3512
18756 [CVE-2014-3511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3511
18757 [CVE-2014-3510]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3510
18758 [CVE-2014-3509]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3509
18759 [CVE-2014-3508]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3508
18760 [CVE-2014-3507]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3507
18761 [CVE-2014-3506]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3506
18762 [CVE-2014-3505]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3505
18763 [CVE-2014-3470]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-3470
18764 [CVE-2014-0224]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0224
18765 [CVE-2014-0221]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0221
18766 [CVE-2014-0195]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0195
18767 [CVE-2014-0160]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0160
18768 [CVE-2014-0076]: https://www.openssl.org/news/vulnerabilities.html#CVE-2014-0076
18769 [CVE-2013-6450]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-6450
18770 [CVE-2013-4353]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-4353
18771 [CVE-2013-0169]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0169
18772 [CVE-2013-0166]: https://www.openssl.org/news/vulnerabilities.html#CVE-2013-0166
18773 [CVE-2012-2686]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2686
18774 [CVE-2012-2333]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2333
18775 [CVE-2012-2110]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-2110
18776 [CVE-2012-0884]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0884
18777 [CVE-2012-0050]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0050
18778 [CVE-2012-0027]: https://www.openssl.org/news/vulnerabilities.html#CVE-2012-0027
18779 [CVE-2011-4619]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4619
18780 [CVE-2011-4577]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4577
18781 [CVE-2011-4576]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4576
18782 [CVE-2011-4109]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4109
18783 [CVE-2011-4108]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-4108
18784 [CVE-2011-3210]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3210
18785 [CVE-2011-3207]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-3207
18786 [CVE-2011-0014]: https://www.openssl.org/news/vulnerabilities.html#CVE-2011-0014
18787 [CVE-2010-4252]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4252
18788 [CVE-2010-4180]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-4180
18789 [CVE-2010-3864]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-3864
18790 [CVE-2010-1633]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-1633
18791 [CVE-2010-0740]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0740
18792 [CVE-2010-0433]: https://www.openssl.org/news/vulnerabilities.html#CVE-2010-0433
18793 [CVE-2009-4355]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-4355
18794 [CVE-2009-3555]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3555
18795 [CVE-2009-3245]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-3245
18796 [CVE-2009-1386]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1386
18797 [CVE-2009-1379]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1379
18798 [CVE-2009-1378]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1378
18799 [CVE-2009-1377]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-1377
18800 [CVE-2009-0789]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0789
18801 [CVE-2009-0591]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0591
18802 [CVE-2009-0590]: https://www.openssl.org/news/vulnerabilities.html#CVE-2009-0590
18803 [CVE-2008-5077]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-5077
18804 [CVE-2008-1678]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-1678
18805 [CVE-2008-1672]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-1672
18806 [CVE-2008-0891]: https://www.openssl.org/news/vulnerabilities.html#CVE-2008-0891
18807 [CVE-2007-5135]: https://www.openssl.org/news/vulnerabilities.html#CVE-2007-5135
18808 [CVE-2007-4995]: https://www.openssl.org/news/vulnerabilities.html#CVE-2007-4995
18809 [CVE-2006-4343]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4343
18810 [CVE-2006-4339]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-4339
18811 [CVE-2006-3738]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-3738
18812 [CVE-2006-2940]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2940
18813 [CVE-2006-2937]: https://www.openssl.org/news/vulnerabilities.html#CVE-2006-2937
18814 [CVE-2005-2969]: https://www.openssl.org/news/vulnerabilities.html#CVE-2005-2969
18815 [CVE-2004-0112]: https://www.openssl.org/news/vulnerabilities.html#CVE-2004-0112
18816 [CVE-2004-0079]: https://www.openssl.org/news/vulnerabilities.html#CVE-2004-0079
18817 [CVE-2003-0851]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0851
18818 [CVE-2003-0545]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0545
18819 [CVE-2003-0544]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0544
18820 [CVE-2003-0543]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0543
18821 [CVE-2003-0078]: https://www.openssl.org/news/vulnerabilities.html#CVE-2003-0078
18822 [CVE-2002-0659]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0659
18823 [CVE-2002-0657]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0657
18824 [CVE-2002-0656]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0656
18825 [CVE-2002-0655]: https://www.openssl.org/news/vulnerabilities.html#CVE-2002-0655