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
+ +) 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 void pointer.
+ [Ben Laurie]
+
+ +) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
+ that the digest can only process a single chunk of data
+ (typically because it is provided by a piece of
+ hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
+ is only going to provide a single chunk of data, and hence the
+ framework needn't accumulate the data for oneshot drivers.
+ [Ben Laurie]
+
+ +) As with "ERR", make it possible to replace the underlying "ex_data"
+ functions. This change also alters the storage and management of global
+ ex_data state - it's now all inside ex_data.c and all "class" code (eg.
+ RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
+ index counters. The API functions that use this state have been changed
+ to take a "class_index" rather than pointers to the class's local STACK
+ and counter, and there is now an API function to dynamically create new
+ classes. This centralisation allows us to (a) plug a lot of the
+ thread-safety problems that existed, and (b) makes it possible to clean
+ up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
+ such data would previously have always leaked in application code and
+ workarounds were in place to make the memory debugging turn a blind eye
+ 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
+ global state (2 LHASH tables and 2 locks) is only used by the "default"
+ implementation. This change also adds two functions to "get" and "set"
+ the implementation prior to it being automatically set the first time
+ any other ERR function takes place. Ie. an application can call "get",
+ pass the return value to a module it has just loaded, and that module
+ can call its own "set" function using that value. This means the
+ module's "ERR" operations will use (and modify) the error state in the
+ application and not in its own statically linked copy of OpenSSL code.
+ [Geoff Thorpe]
+
+ +) 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).
+ This function was broken, as the check for a new client hello message
+ to handle SGC did not allow these large messages.
+ (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
+ [Lutz Jaenicke]
+
+ *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
+ [Lutz Jaenicke]
+
+ +) Add EVP test program.
+ [Ben Laurie]
+
+ +) Add symmetric cipher support to ENGINE. Expect the API to change!
+ [Ben Laurie]
+
+ +) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
+ X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
+ X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
+ These allow a CRL to be built without having to access X509_CRL fields
+ directly. Modify 'ca' application to use new functions.
+ [Steve Henson]
+
+ *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
+ for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
+ [Lutz Jaenicke]
+
+ *) Rework the configuration and shared library support for Tru64 Unix.
+ 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 special
+ configuration target "alpha-cc-rpath", which will never be selected
+ automatically.
+ [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
+
+ *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
+ with the same message size as in ssl3_get_certificate_request().
+ Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
+ messages might inadvertently be reject as too long.
+ [Petr Lampa <lampa@fee.vutbr.cz>]
+
+ +) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
+ bug workarounds. Rollback attack detection is a security feature.
+ The problem will only arise on OpenSSL servers when TLSv1 is not
+ available (sslv3_server_method() or SSL_OP_NO_TLSv1).
+ Software authors not wanting to support TLSv1 will have special reasons
+ for their choice and can explicitly enable this option.
+ [Bodo Moeller, Lutz Jaenicke]
+
+) Rationalise EVP so it can be extended: don't include a union of
cipher/digest structures, add init/cleanup functions. This also reduces
the number of header dependencies.
[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.
the clients preferred ciphersuites and rather use its own preferences.
Should help to work around M$ SGC (Server Gated Cryptography) bug in
Internet Explorer by ensuring unchanged hash method during stepup.
+ (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
[Lutz Jaenicke]
+) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
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
default is static libraries only, and the OpenSSL programs
are always statically linked for now, but there are
preparations for dynamic linking in place.
- This has been tested on Linux and True64.
+ This has been tested on Linux and Tru64.
[Richard Levitte]
*) Randomness polling function for Win9x, as described in:
projects / openssl.git / blobdiff