OpenSSL CHANGES
_______________
- Changes between 0.9.4 and 0.9.5 [xx XXX 1999]
+ Changes between 0.9.4 and 0.9.5 [xx XXX 2000]
+
+ *) Change function names to the new get0/get1 naming convention.
+ [Steve Henson]
+
+ *) Allow for the possibility of temp RSA key generation failure:
+ the code used to assume it always worked and crashed on failure.
+ [Steve Henson]
+
+ *) Fix potential buffer overrun problem in BIO_printf().
+ [Ulf Möller, using public domain code by Patrick Powell; problem
+ pointed out by David Sacerdote <das33@cornell.edu>]
+
+ *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
+ RAND_egd() and RAND_status(). In the command line application,
+ the EGD socket can be specified like a seed file using RANDFILE
+ or -rand.
+ [Ulf Möller]
+
+ *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
+ Some CAs (e.g. Verisign) distribute certificates in this form.
+ [Steve Henson]
+
+ *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
+ list to exclude them. This means that no special compilation option
+ is needed to use anonymous DH: it just needs to be included in the
+ cipher list.
+ [Steve Henson]
+
+ *) Change the EVP_MD_CTX_type macro so its meaning consistent with
+ EVP_MD_type. The old functionality is available in a new macro called
+ EVP_MD_md(). Change code that uses it and update docs.
+ [Steve Henson]
+
+ *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
+ where the 'void *' argument is replaced by a function pointer argument.
+ Previously 'void *' was abused to point to functions, which works on
+ many platforms, but is not correct. As these functions are usually
+ called by macros defined in OpenSSL header files, most source code
+ should work without changes.
+ [Richard Levitte]
+
+ *) <openssl/opensslconf.h> (which is created by Configure) now contains
+ sections with information on -D... compiler switches used for
+ compiling the library so that applications can see them. To enable
+ one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
+ must be defined. E.g.,
+ #define OPENSSL_ALGORITHM_DEFINES
+ #include <openssl/opensslconf.h>
+ defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
+ [Richard Levitte, Ulf and Bodo Möller]
+
+ *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
+ record layer.
+ [Bodo Moeller]
+
+ *) Change the 'other' type in certificate aux info to a STACK_OF
+ X509_ALGOR. Although not an AlgorithmIdentifier as such it has
+ the required ASN1 format: arbitrary types determined by an OID.
+ [Steve Henson]
+
+ *) Add some PEM_write_X509_REQ_NEW() functions and a command line
+ argument to 'req'. This is not because the function is newer or
+ better than others it just uses the work 'NEW' in the certificate
+ request header lines. Some software needs this.
+ [Steve Henson]
+
+ *) Reorganise password command line arguments: now passwords can be
+ obtained from various sources. Delete the PEM_cb function and make
+ it the default behaviour: i.e. if the callback is NULL and the
+ usrdata argument is not NULL interpret it as a null terminated pass
+ phrase. If usrdata and the callback are NULL then the pass phrase
+ is prompted for as usual.
+ [Steve Henson]
+
+ *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
+ the support is automatically enabled. The resulting binaries will
+ autodetect the card and use it if present.
+ [Ben Laurie and Compaq Inc.]
+
+ *) Work around for Netscape hang bug. This sends certificate request
+ and server done in one record. Since this is perfectly legal in the
+ SSL/TLS protocol it isn't a "bug" option and is on by default. See
+ the bugs/SSLv3 entry for more info.
+ [Steve Henson]
+
+ *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
+ [Andy Polyakov]
+
+ *) Add -rand argument to smime and pkcs12 applications and read/write
+ of seed file.
+ [Steve Henson]
+
+ *) New 'passwd' tool for crypt(3) and apr1 password hashes.
+ [Bodo Moeller]
+
+ *) Add command line password options to the remaining applications.
+ [Steve Henson]
+
+ *) Bug fix for BN_div_recp() for numerators with an even number of
+ bits.
+ [Ulf Möller]
+
+ *) More tests in bntest.c, and changed test_bn output.
+ [Ulf Möller]
+
+ *) ./config recognizes MacOS X now.
+ [Andy Polyakov]
+
+ *) Bug fix for BN_div() when the first words of num and divsor are
+ equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
+ [Ulf Möller]
+
+ *) Add support for various broken PKCS#8 formats, and command line
+ options to produce them.
+ [Steve Henson]
+
+ *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
+ get temporary BIGNUMs from a BN_CTX.
+ [Ulf Möller]
+
+ *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
+ for p == 0.
+ [Ulf Möller]
+
+ *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
+ include a #define from the old name to the new. The original intent
+ was that statically linked binaries could for example just call
+ SSLeay_add_all_ciphers() to just add ciphers to the table and not
+ link with digests. This never worked becayse SSLeay_add_all_digests()
+ and SSLeay_add_all_ciphers() were in the same source file so calling
+ one would link with the other. They are now in separate source files.
+ [Steve Henson]
+
+ *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
+ [Steve Henson]
+
+ *) Use a less unusual form of the Miller-Rabin primality test (it used
+ a binary algorithm for exponentiation integrated into the Miller-Rabin
+ loop, our standard modexp algorithms are faster).
+ [Bodo Moeller]
+
+ *) Support for the EBCDIC character set completed.
+ [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
+
+ *) Source code cleanups: use const where appropriate, eliminate casts,
+ use void * instead of char * in lhash.
+ [Ulf Möller]
+
+ *) Bugfix: ssl3_send_server_key_exchange was not restartable
+ (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
+ this the server could overwrite ephemeral keys that the client
+ has already seen).
+ [Bodo Moeller]
+
+ *) Turn DSA_is_prime into a macro that calls BN_is_prime,
+ using 50 iterations of the Rabin-Miller test.
+
+ DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
+ iterations of the Rabin-Miller test as required by the appendix
+ to FIPS PUB 186[-1]) instead of DSA_is_prime.
+ As BN_is_prime_fasttest includes trial division, DSA parameter
+ generation becomes much faster.
+
+ This implies a change for the callback functions in DSA_is_prime
+ and DSA_generate_parameters: The callback function is called once
+ for each positive witness in the Rabin-Miller test, not just
+ occasionally in the inner loop; and the parameters to the
+ callback function now provide an iteration count for the outer
+ loop rather than for the current invocation of the inner loop.
+ DSA_generate_parameters additionally can call the callback
+ function with an 'iteration count' of -1, meaning that a
+ candidate has passed the trial division test (when q is generated
+ from an application-provided seed, trial division is skipped).
+ [Bodo Moeller]
+
+ *) New function BN_is_prime_fasttest that optionally does trial
+ division before starting the Rabin-Miller test and has
+ an additional BN_CTX * argument (whereas BN_is_prime always
+ has to allocate at least one BN_CTX).
+ 'callback(1, -1, cb_arg)' is called when a number has passed the
+ trial division stage.
+ [Bodo Moeller]
+
+ *) Fix for bug in CRL encoding. The validity dates weren't being handled
+ as ASN1_TIME.
+ [Steve Henson]
+
+ *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
+ [Steve Henson]
+
+ *) New function BN_pseudo_rand().
+ [Ulf Möller]
+
+ *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
+ bignum version of BN_from_montgomery() with the working code from
+ SSLeay 0.9.0 (the word based version is faster anyway), and clean up
+ the comments.
+ [Ulf Möller]
+
+ *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
+ made it impossible to use the same SSL_SESSION data structure in
+ SSL2 clients in multiple threads.
+ [Bodo Moeller]
+
+ *) The return value of RAND_load_file() no longer counts bytes obtained
+ by stat(). RAND_load_file(..., -1) is new and uses the complete file
+ to seed the PRNG (previously an explicit byte count was required).
+ [Ulf Möller, Bodo Möller]
+
+ *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
+ used (char *) instead of (void *) and had casts all over the place.
+ [Steve Henson]
+
+ *) Make BN_generate_prime() return NULL on error if ret!=NULL.
+ [Ulf Möller]
+
+ *) Retain source code compatibility for BN_prime_checks macro:
+ BN_is_prime(..., BN_prime_checks, ...) now uses
+ BN_prime_checks_for_size to determine the appropriate number of
+ Rabin-Miller iterations.
+ [Ulf Möller]
+
+ *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
+ DH_CHECK_P_NOT_SAFE_PRIME.
+ (Check if this is true? OpenPGP calls them "strong".)
+ [Ulf Möller]
+
+ *) Merge the functionality of "dh" and "gendh" programs into a new program
+ "dhparam". The old programs are retained for now but will handle DH keys
+ (instead of parameters) in future.
+ [Steve Henson]
+
+ *) Make the ciphers, s_server and s_client programs check the return values
+ when a new cipher list is set.
+ [Steve Henson]
+
+ *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
+ ciphers. Before when the 56bit ciphers were enabled the sorting was
+ wrong.
+
+ The syntax for the cipher sorting has been extended to support sorting by
+ cipher-strength (using the strength_bits hard coded in the tables).
+ The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
+
+ Fix a bug in the cipher-command parser: when supplying a cipher command
+ string with an "undefined" symbol (neither command nor alphanumeric
+ [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
+ an error is flagged.
+
+ Due to the strength-sorting extension, the code of the
+ ssl_create_cipher_list() function was completely rearranged. I hope that
+ the readability was also increased :-)
+ [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
+
+ *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
+ for the first serial number and places 2 in the serial number file. This
+ avoids problems when the root CA is created with serial number zero and
+ the first user certificate has the same issuer name and serial number
+ as the root CA.
+ [Steve Henson]
+
+ *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
+ the new code. Add documentation for this stuff.
+ [Steve Henson]
+
+ *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
+ X509_*() to X509at_*() on the grounds that they don't handle X509
+ structures and behave in an analagous way to the X509v3 functions:
+ they shouldn't be called directly but wrapper functions should be used
+ instead.
+
+ So we also now have some wrapper functions that call the X509at functions
+ when passed certificate requests. (TO DO: similar things can be done with
+ PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
+ things. Some of these need some d2i or i2d and print functionality
+ because they handle more complex structures.)
+ [Steve Henson]
+
+ *) Add missing #ifndefs that caused missing symbols when building libssl
+ as a shared library without RSA. Use #ifndef NO_SSL2 instead of
+ NO_RSA in ssl/s2*.c.
+ [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
+
+ *) Precautions against using the PRNG uninitialized: RAND_bytes() now
+ has a return value which indicates the quality of the random data
+ (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
+ error queue. New function RAND_pseudo_bytes() generates output that is
+ guaranteed to be unique but not unpredictable. RAND_add is like
+ RAND_seed, but takes an extra argument for an entropy estimate
+ (RAND_seed always assumes full entropy).
+ [Ulf Möller]
+
+ *) Do more iterations of Rabin-Miller probable prime test (specifically,
+ 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
+ instead of only 2 for all lengths; see BN_prime_checks_for_size definition
+ in crypto/bn/bn_prime.c for the complete table). This guarantees a
+ false-positive rate of at most 2^-80 for random input.
+ [Bodo Moeller]
+
+ *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
+ [Bodo Moeller]
*) New function X509_CTX_rget_chain(), this returns the chain
from an X509_CTX structure with a dup of the stack and all
To get OpenSSL to support MS SGC we have to permit a second client
hello message after we have sent server done. In addition we have to
- reset the MAC if we do get this second client hello and include the
- data just received.
+ reset the MAC if we do get this second client hello.
[Steve Henson]
*) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
*) Rebuild of the memory allocation routines used by OpenSSL code and
possibly others as well. The purpose is to make an interface that
provide hooks so anyone can build a separate set of allocation and
- deallocation routines to be used by OpenSSL, for example if memory
- pool implementations, or something else. The same is provided for
- memory debugging code. OpenSSL already comes with code that finds
- memory leaks, but this gives people a chance to debug other memory
- problems.
+ deallocation routines to be used by OpenSSL, for example memory
+ pool implementations, or something else, which was previously hard
+ since Malloc(), Realloc() and Free() were defined as macros having
+ the values malloc, realloc and free, respectively (except for Win32
+ compilations). The same is provided for memory debugging code.
+ OpenSSL already comes with functionality to find memory leaks, but
+ this gives people a chance to debug other memory problems.
With these changes, a new set of functions and macros have appeared:
The memory debug functions are NULL by default, unless the library
is compiled with CRYPTO_MDEBUG or friends is defined. If someone
- wants to debug memory anyway, CRYPTO_malloc_debug_init() or
- CRYPTO_set_mem_debug_functions() must be used.
+ wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
+ gives the standard debugging functions that come with OpenSSL) or
+ CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
+ provided by the library user) must be used. When the standard
+ debugging functions are used, CRYPTO_dbg_set_options can be used to
+ request additional information:
+ CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
+ the CRYPTO_MDEBUG_xxx macro when compiling the library.
Also, things like CRYPTO_set_mem_functions will always give the
expected result (the new set of functions is used for allocation
CRYPTO_dbg_free()
All macros of value have retained their old syntax.
- [Richard Levitte]
+ [Richard Levitte and Bodo Moeller]
*) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
ordering of SMIMECapabilities wasn't in "strength order" and there
code.
[Steve Henson]
- *) Correctly increment the reference count in the SSL_SESSION pointer
- returned from SSL_get_session().
+ *) SSL_get1_session() is like SSL_get_session(), but increments
+ the reference count in the SSL_SESSION returned.
[Geoff Thorpe <geoff@eu.c2.net>]
*) Fix for 'req': it was adding a null to request attributes.
*) Add the possibility to add extra information to the memory leak
detecting output, to form tracebacks, showing from where each
- allocation was originated. Also updated sid code to be multi-
- thread-safe.
+ allocation was originated: CRYPTO_push_info("constant string") adds
+ the string plus current file name and line number to a per-thread
+ stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
+ is like calling CYRPTO_pop_info() until the stack is empty.
+ Also updated memory leak detection code to be multi-thread-safe.
[Richard Levitte]
*) Add options -text and -noout to pkcs7 utility and delete the
for all purposes.
[Steve Henson]
- *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). The
- problem was that one of the replacement routines had not been working since
- SSLeay releases. For now the offending routine has been replaced with
- non-optimised assembler. Even so, this now gives around 95% performance
- improvement for 1024 bit RSA signs.
+ *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
+ The problem was that one of the replacement routines had not been working
+ since SSLeay releases. For now the offending routine has been replaced
+ with non-optimised assembler. Even so, this now gives around 95%
+ performance improvement for 1024 bit RSA signs.
[Mark Cox]
*) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
projects / openssl.git / blobdiff