Changes between 0.9.6 and 0.9.7 [xx XXX 2001]
OpenSSL 0.9.6a/0.9.6b (bugfix releases, 5 Apr 2001 and 9 July 2001)
- and OpenSSL 0.9.7 were developped in parallel, based on OpenSSL 0.9.6.
+ and OpenSSL 0.9.7 were developed in parallel, based on OpenSSL 0.9.6.
Change log entries are tagged as follows:
-) applies to 0.9.6a/0.9.6b/0.9.6c only
*) applies to 0.9.6a/0.9.6b/0.9.6c and 0.9.7
+) applies to 0.9.7 only
+ +) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
+ [Massimo Santin via Richard Levitte]
+
+ +) Major restructuring to the underlying ENGINE code. This includes
+ reduction of linker bloat, separation of pure "ENGINE" manipulation
+ (initialisation, etc) from functionality dealing with implementations
+ of specific crypto iterfaces. This change also introduces integrated
+ support for symmetric ciphers and digest implementations - so ENGINEs
+ can now accelerate these by providing EVP_CIPHER and EVP_MD
+ implementations of their own. This is detailed in crypto/engine/README
+ as it couldn't be adequately described here. However, there are a few
+ API changes worth noting - some RSA, DSA, DH, and RAND functions that
+ were changed in the original introduction of ENGINE code have now
+ reverted back - the hooking from this code to ENGINE is now a good
+ deal more passive and at run-time, operations deal directly with
+ RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
+ dereferencing through an ENGINE pointer any more. Also, the ENGINE
+ functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
+ they were not being used by the framework as there is no concept of a
+ BIGNUM_METHOD and they could not be generalised to the new
+ 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
+ ENGINE_cpy() has been removed as it cannot be consistently defined in
+ the new code.
+ [Geoff Thorpe]
+
+ +) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
+ [Steve Henson]
+
+ +) Change mkdef.pl to sort symbols that get the same entry number,
+ and make sure the automatically generated functions ERR_load_*
+ become part of libeay.num as well.
+ [Richard Levitte]
+
+ *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
+ client receives HelloRequest while in a handshake.
+ [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
+
+ +) New function SSL_renegotiate_pending(). This returns true once
+ renegotiation has been requested (either SSL_renegotiate() call
+ or HelloRequest/ClientHello receveived from the peer) and becomes
+ false once a handshake has been completed.
+ (For servers, SSL_renegotiate() followed by SSL_do_handshake()
+ sends a HelloRequest, but does not ensure that a handshake takes
+ place. SSL_renegotiate_pending() is useful for checking if the
+ client has followed the request.)
+ [Bodo Moeller]
+
+ +) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
+ By default, clients may request session resumption even during
+ renegotiation (if session ID contexts permit); with this option,
+ session resumption is possible only in the first handshake.
+ [Bodo Moeller]
+
+ *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
+ should end in 'break', not 'goto end' which circuments various
+ cleanups done in state SSL_ST_OK. But session related stuff
+ must be disabled for SSL_ST_OK in the case that we just sent a
+ HelloRequest.
+
+ Also avoid some overhead by not calling ssl_init_wbio_buffer()
+ before just sending a HelloRequest.
+ [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
+
+ *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
+ reveal whether illegal block cipher padding was found or a MAC
+ verification error occured. (Neither SSLerr() codes nor alerts
+ are directly visible to potential attackers, but the information
+ may leak via logfiles.)
+
+ Similar changes are not required for the SSL 2.0 implementation
+ because the number of padding bytes is sent in clear for SSL 2.0,
+ and the extra bytes are just ignored. However ssl/s2_pkt.c
+ failed to verify that the purported number of padding bytes is in
+ the legal range.
+ [Bodo Moeller]
+
+ +) Add some demos for certificate and certificate request creation.
+ [Steve Henson]
+
+ +) Make maximum certificate chain size accepted from the peer application
+ settable (SSL*_get/set_max_cert_list()), as proposed by
+ "Douglas E. Engert" <deengert@anl.gov>.
+ [Lutz Jaenicke]
+
+ +) Add support for shared libraries for Unixware-7 and support including
+ shared libraries for OpenUNIX-8 (Boyd Lynn Gerber <gerberb@zenez.com>).
+ [Lutz Jaenicke]
+
+ *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
+ 'wristwatch attack' using huge encoding parameters (cf.
+ James H. Manger's CRYPTO 2001 paper). Note that the
+ RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
+ encoding parameters and hence was not vulnerable.
+ [Bodo Moeller]
+
+ +) Add a "destroy" handler to ENGINEs that allows structural cleanup to
+ be done prior to destruction. Use this to unload error strings from
+ ENGINEs that load their own error strings. NB: This adds two new API
+ functions to "get" and "set" this destroy handler in an ENGINE.
+ [Geoff Thorpe]
+
+ +) Alter all existing ENGINE implementations (except "openssl" and
+ "openbsd") to dynamically instantiate their own error strings. This
+ makes them more flexible to be built both as statically-linked ENGINEs
+ and self-contained shared-libraries loadable via the "dynamic" ENGINE.
+ Also, add stub code to each that makes building them as self-contained
+ shared-libraries easier (see README.ENGINE).
+ [Geoff Thorpe]
+
+ +) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
+ implementations into applications that are completely implemented in
+ self-contained shared-libraries. The "dynamic" ENGINE exposes control
+ commands that can be used to configure what shared-library to load and
+ to control aspects of the way it is handled. Also, made an update to
+ the README.ENGINE file that brings its information up-to-date and
+ provides some information and instructions on the "dynamic" ENGINE
+ (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
+ [Geoff Thorpe]
+
+ *) BN_sqr() bug fix.
+ [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
+
+ *) Make it possible to unload ranges of ERR strings with a new
+ "ERR_unload_strings" function.
+ [Geoff Thorpe]
+
+ *) Rabin-Miller test analyses assume uniformly distributed witnesses,
+ so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
+ followed by modular reduction.
+ [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
+
+ *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
+ equivalent based on BN_pseudo_rand() instead of BN_rand().
+ [Bodo Moeller]
+
+) Add a copy() function to EVP_MD.
[Ben Laurie]
+) Make EVP_MD routines take a context pointer instead of just the
- md_data voud pointer.
+ md_data void pointer.
[Ben Laurie]
+) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
to it. Application code that doesn't use this new function will still
leak as before, but their memory debugging output will announce it now
rather than letting it slide.
+
+ Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
+ induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
+ has a return value to indicate success or failure.
[Geoff Thorpe]
+) Make it possible to replace the underlying "ERR" functions such that the
application and not in its own statically linked copy of OpenSSL code.
[Geoff Thorpe]
- +) Give DH, DSA, and RSA types their own "**_up()" function to increment
+ +) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
reference counts. This performs normal REF_PRINT/REF_CHECK macros on
the operation, and provides a more encapsulated way for external code
(crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
to use these functions rather than manually incrementing the counts.
+
+ Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
[Geoff Thorpe]
*) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
The configuration part makes use of modern compiler features and
still retains old compiler behavior for those that run older versions
of the OS. The shared library support part includes a variant that
- uses the RPATH feature, and is available through the speciel
+ uses the RPATH feature, and is available through the special
configuration target "alpha-cc-rpath", which will never be selected
automatically.
[Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
[Steve Henson]
*) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
- explicitely to NULL, as at least on Solaris 8 this seems not always to be
+ explicitly to NULL, as at least on Solaris 8 this seems not always to be
done automatically (in contradiction to the requirements of the C
standard). This made problems when used from OpenSSH.
[Lutz Jaenicke]
[Bodo Moeller]
+) Enhance the general user interface with mechanisms for inner control
- and with pssibilities to have yes/no kind of prompts.
+ and with possibilities to have yes/no kind of prompts.
[Richard Levitte]
+) Change all calls to low level digest routines in the library and
Change the key loaders to take a UI_METHOD instead of a callback
function pointer. NOTE: this breaks binary compatibility with earlier
versions of OpenSSL [engine].
- Addapt the nCipher code for these new conditions and add a card insertion
+ Adapt the nCipher code for these new conditions and add a card insertion
callback.
[Richard Levitte]
+) Enhance the general user interface with mechanisms to better support
dialog box interfaces, application-defined prompts, the possibility
to use defaults (for example default passwords from somewhere else)
- and interrupts/cancelations.
+ and interrupts/cancellations.
[Richard Levitte]
*) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
[Ulf Möller, Bodo Möller]
*) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
- RSA encryption was accidentily removed in s3_srvr.c in OpenSSL 0.9.5
+ RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
when fixing the server behaviour for backwards-compatible 'client
hello' messages. (Note that the attack is impractical against
SSL 3.0 and TLS 1.0 anyway because length and version checking
[Bodo Moeller]
+) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
- tidy up some unecessarily weird code in 'sk_new()').
+ tidy up some unnecessarily weird code in 'sk_new()').
[Geoff, reported by Diego Tartara <dtartara@novamens.com>]
+) Change the key loading routines for ENGINEs to use the same kind
const ASN1_ITEM *it = &ASN1_INTEGER_it;
wont compile. This is used by the any applications that need to
- delcare their own ASN1 modules. This was fixed by adding the option
+ declare their own ASN1 modules. This was fixed by adding the option
EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
needed for static libraries under Win32.
[Steve Henson]
combination of a flag and a thread ID variable.
Otherwise while one thread is in ssleay_rand_bytes (which sets the
flag), *other* threads can enter ssleay_add_bytes without obeying
- the CRYPTO_LOCK_RAND lock (and may even illegaly release the lock
+ the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
that they do not hold after the first thread unsets add_do_not_lock).
[Bodo Moeller]
+) Implement binary inversion algorithm for BN_mod_inverse in addition
- to the algorithm using long divison. The binary algorithm can be
+ to the algorithm using long division. The binary algorithm can be
used only if the modulus is odd. On 32-bit systems, it is faster
only for relatively small moduli (roughly 20-30% for 128-bit moduli,
roughly 5-15% for 256-bit moduli), so we use it only for moduli
#define bar OPENSSL_GLOBAL_REF(bar)
The #defines are very important, and therefore so is including the
- header file everywere where the defined globals are used.
+ header file everywhere where the defined globals are used.
The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
- of ASN.1 items, but that structure is a bt different.
+ of ASN.1 items, but that structure is a bit different.
The largest change is in util/mkdef.pl which has been enhanced with
better and easier to understand logic to choose which symbols should
responses. OCSP responses are prepared in real time and may only
be a few seconds old. Simply checking that the current time lies
between thisUpdate and nextUpdate max reject otherwise valid responses
- caused by either OCSP responder or client clock innacuracy. Instead
+ caused by either OCSP responder or client clock inaccuracy. Instead
we allow thisUpdate and nextUpdate to fall within a certain period of
the current time. The age of the response can also optionally be
checked. Two new options -validity_period and -status_age added to
[Steve Henson]
+) If signature or public key algorithm is unrecognized print out its
- OID rather that just UNKOWN.
+ OID rather that just UNKNOWN.
[Steve Henson]
*) Avoid coredump with unsupported or invalid public keys by checking if
to use such a feature) has been added to "s_server".
[Geoff Thorpe, Lutz Jaenicke]
- +) Modify mkdef.pl to recognise and parse prprocessor conditionals
+ +) Modify mkdef.pl to recognise and parse preprocessor conditionals
of the form '#if defined(...) || defined(...) || ...' and
'#if !defined(...) && !defined(...) && ...'. This also avoids
the growing number of special cases it was previously handling.
extract information from a certificate request. OCSP_response_create()
creates a response and optionally adds a basic response structure.
OCSP_basic_add1_status() adds a complete single response to a basic
- reponse and returns the OCSP_SINGLERESP structure just added (to allow
+ response and returns the OCSP_SINGLERESP structure just added (to allow
extensions to be included for example). OCSP_basic_add1_cert() adds a
certificate to a basic response and OCSP_basic_sign() signs a basic
response with various flags. New helper functions ASN1_TIME_check()
+) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
- structure from a certificate. X509_pubkey_digest() digests tha public_key
+ structure from a certificate. X509_pubkey_digest() digests the public_key
contents: this is used in various key identifiers.
[Steve Henson]
+) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
passed by the function are trusted implicitly. If any of them signed the
- reponse then it is assumed to be valid and is not verified.
+ response then it is assumed to be valid and is not verified.
[Steve Henson]
-) Make the CRL encoding routines work with empty SEQUENCE OF. The
projects / openssl.git / blobdiff