diff options
Diffstat (limited to 'lib/libssl/src/CHANGES')
| -rw-r--r-- | lib/libssl/src/CHANGES | 1964 |
1 files changed, 1961 insertions, 3 deletions
diff --git a/lib/libssl/src/CHANGES b/lib/libssl/src/CHANGES index f88867b065e..b8399a3500a 100644 --- a/lib/libssl/src/CHANGES +++ b/lib/libssl/src/CHANGES @@ -2,6 +2,1964 @@ OpenSSL CHANGES _______________ + Changes between 0.9.6d and 0.9.7 [XX xxx 2002] + + *) Fix escaping of non-ASCII characters when using the -subj option + of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>) + [Lutz Jaenicke] + + *) Make object definitions compliant to LDAP (RFC2256): SN is the short + form for "surname", serialNumber has no short form. + Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; + therefore remove "mail" short name for "internet 7". + Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>) + [Lutz Jaenicke] + + *) Add an "init" command to the ENGINE config module and auto initialize + ENGINEs. Without any "init" command the ENGINE will be initialized + after all ctrl commands have been executed on it. If init=1 the + ENGINE is initailized at that point (ctrls before that point are run + on the uninitialized ENGINE and after on the initialized one). If + init=0 then the ENGINE will not be iniatialized at all. + [Steve Henson] + + *) Fix the 'app_verify_callback' interface so that the user-defined + argument is actually passed to the callback: In the + SSL_CTX_set_cert_verify_callback() prototype, the callback + declaration has been changed from + int (*cb)() + into + int (*cb)(X509_STORE_CTX *,void *); + in ssl_verify_cert_chain (ssl/ssl_cert.c), the call + i=s->ctx->app_verify_callback(&ctx) + has been changed into + i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). + + To update applications using SSL_CTX_set_cert_verify_callback(), + a dummy argument can be added to their callback functions. + [D. K. Smetters <smetters@parc.xerox.com>] + + *) Added the '4758cca' ENGINE to support IBM 4758 cards. + [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe] + + *) Add and OPENSSL_LOAD_CONF define which will cause + OpenSSL_add_all_algorithms() to load the openssl.cnf config file. + This allows older applications to transparently support certain + OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. + Two new functions OPENSSL_add_all_algorithms_noconf() which will never + load the config file and OPENSSL_add_all_algorithms_conf() which will + always load it have also been added. + [Steve Henson] + + *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. + Adjust NIDs and EVP layer. + [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] + + *) Config modules support in openssl utility. + + Most commands now load modules from the config file, + though in a few (such as version) this isn't done + because it couldn't be used for anything. + + In the case of ca and req the config file used is + the same as the utility itself: that is the -config + command line option can be used to specify an + alternative file. + [Steve Henson] + + *) Move default behaviour from OPENSSL_config(). If appname is NULL + use "openssl_conf" if filename is NULL use default openssl config file. + [Steve Henson] + + *) Add an argument to OPENSSL_config() to allow the use of an alternative + config section name. Add a new flag to tolerate a missing config file + and move code to CONF_modules_load_file(). + [Steve Henson] + + *) Support for crypto accelerator cards from Accelerated Encryption + Processing, www.aep.ie. (Use engine 'aep') + The support was copied from 0.9.6c [engine] and adapted/corrected + to work with the new engine framework. + [AEP Inc. and Richard Levitte] + + *) Support for SureWare crypto accelerator cards from Baltimore + Technologies. (Use engine 'sureware') + The support was copied from 0.9.6c [engine] and adapted + to work with the new engine framework. + [Richard Levitte] + + *) Have the CHIL engine fork-safe (as defined by nCipher) and actually + make the newer ENGINE framework commands for the CHIL engine work. + [Toomas Kiisk <vix@cyber.ee> and Richard Levitte] + + *) Make it possible to produce shared libraries on ReliantUNIX. + [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte] + + *) Add the configuration target debug-linux-ppro. + Make 'openssl rsa' use the general key loading routines + implemented in apps.c, and make those routines able to + handle the key format FORMAT_NETSCAPE and the variant + FORMAT_IISSGC. + [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] + + *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). + [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] + + *) Add -keyform to rsautl, and document -engine. + [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>] + + *) Change BIO_new_file (crypto/bio/bss_file.c) to use new + BIO_R_NO_SUCH_FILE error code rather than the generic + ERR_R_SYS_LIB error code if fopen() fails with ENOENT. + [Ben Laurie] + + *) Add new functions + ERR_peek_last_error + ERR_peek_last_error_line + ERR_peek_last_error_line_data. + These are similar to + ERR_peek_error + ERR_peek_error_line + ERR_peek_error_line_data, + but report on the latest error recorded rather than the first one + still in the error queue. + [Ben Laurie, Bodo Moeller] + + *) default_algorithms option in ENGINE config module. This allows things + like: + default_algorithms = ALL + default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS + [Steve Henson] + + *) Prelminary ENGINE config module. + [Steve Henson] + + *) New experimental application configuration code. + [Steve Henson] + + *) Change the AES code to follow the same name structure as all other + symmetric ciphers, and behave the same way. Move everything to + the directory crypto/aes, thereby obsoleting crypto/rijndael. + [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] + + *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. + [Ben Laurie and Theo de Raadt] + + *) Add option to output public keys in req command. + [Massimiliano Pala madwolf@openca.org] + + *) Use wNAFs in EC_POINTs_mul() for improved efficiency + (up to about 10% better than before for P-192 and P-224). + [Bodo Moeller] + + *) New functions/macros + + SSL_CTX_set_msg_callback(ctx, cb) + SSL_CTX_set_msg_callback_arg(ctx, arg) + SSL_set_msg_callback(ssl, cb) + SSL_set_msg_callback_arg(ssl, arg) + + to request calling a callback function + + void cb(int write_p, int version, int content_type, + const void *buf, size_t len, SSL *ssl, void *arg) + + whenever a protocol message has been completely received + (write_p == 0) or sent (write_p == 1). Here 'version' is the + protocol version according to which the SSL library interprets + the current protocol message (SSL2_VERSION, SSL3_VERSION, or + TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or + the content type as defined in the SSL 3.0/TLS 1.0 protocol + specification (change_cipher_spec(20), alert(21), handshake(22)). + 'buf' and 'len' point to the actual message, 'ssl' to the + SSL object, and 'arg' is the application-defined value set by + SSL[_CTX]_set_msg_callback_arg(). + + 'openssl s_client' and 'openssl s_server' have new '-msg' options + to enable a callback that displays all protocol messages. + [Bodo Moeller] + + *) Change the shared library support so shared libraries are built as + soon as the corresponding static library is finished, and thereby get + openssl and the test programs linked against the shared library. + This still only happens when the keyword "shard" has been given to + the configuration scripts. + + NOTE: shared library support is still an experimental thing, and + backward binary compatibility is still not guaranteed. + ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte] + + *) Add support for Subject Information Access extension. + [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] + + *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero + additional bytes when new memory had to be allocated, not just + when reusing an existing buffer. + [Bodo Moeller] + + *) New command line and configuration option 'utf8' for the req command. + This allows field values to be specified as UTF8 strings. + [Steve Henson] + + *) Add -multi and -mr options to "openssl speed" - giving multiple parallel + runs for the former and machine-readable output for the latter. + [Ben Laurie] + + *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion + of the e-mail address in the DN (i.e., it will go into a certificate + extension only). The new configuration file option 'email_in_dn = no' + has the same effect. + [Massimiliano Pala madwolf@openca.org] + + *) Change all functions with names starting with des_ to be starting + with DES_ instead. Add wrappers that are compatible with libdes, + but are named _ossl_old_des_*. Finally, add macros that map the + des_* symbols to the corresponding _ossl_old_des_* if libdes + compatibility is desired. If OpenSSL 0.9.6c compatibility is + desired, the des_* symbols will be mapped to DES_*, with one + exception. + + Since we provide two compatibility mappings, the user needs to + define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes + compatibility is desired. The default (i.e., when that macro + isn't defined) is OpenSSL 0.9.6c compatibility. + + There are also macros that enable and disable the support of old + des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT + and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those + are defined, the default will apply: to support the old des routines. + + In either case, one must include openssl/des.h to get the correct + definitions. Do not try to just include openssl/des_old.h, that + won't work. + + NOTE: This is a major break of an old API into a new one. Software + authors are encouraged to switch to the DES_ style functions. Some + time in the future, des_old.h and the libdes compatibility functions + will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the + default), and then completely removed. + [Richard Levitte] + + *) Test for certificates which contain unsupported critical extensions. + If such a certificate is found during a verify operation it is + rejected by default: this behaviour can be overridden by either + handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or + by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function + X509_supported_extension() has also been added which returns 1 if a + particular extension is supported. + [Steve Henson] + + *) Modify the behaviour of EVP cipher functions in similar way to digests + to retain compatibility with existing code. + [Steve Henson] + + *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain + compatibility with existing code. In particular the 'ctx' parameter does + not have to be to be initialized before the call to EVP_DigestInit() and + it is tidied up after a call to EVP_DigestFinal(). New function + EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function + EVP_MD_CTX_copy() changed to not require the destination to be + initialized valid and new function EVP_MD_CTX_copy_ex() added which + requires the destination to be valid. + + Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), + EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). + [Steve Henson] + + *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it + so that complete 'Handshake' protocol structures are kept in memory + instead of overwriting 'msg_type' and 'length' with 'body' data. + [Bodo Moeller] + + *) 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] + + *) 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] + + *) 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 + (Boyd Lynn Gerber <gerberb@zenez.com>). + [Lutz Jaenicke] + + *) 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] + + *) Make it possible to unload ranges of ERR strings with a new + "ERR_unload_strings" function. + [Geoff Thorpe] + + *) 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] + + *) 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] + + *) 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. + Usage example: + + EVP_MD_CTX md; + + EVP_MD_CTX_init(&md); /* new function call */ + EVP_DigestInit(&md, EVP_sha1()); + EVP_DigestUpdate(&md, in, len); + EVP_DigestFinal(&md, out, NULL); + EVP_MD_CTX_cleanup(&md); /* new function call */ + + [Ben Laurie] + + *) Make DES key schedule conform to the usual scheme, as well as + correcting its structure. This means that calls to DES functions + now have to pass a pointer to a des_key_schedule instead of a + plain des_key_schedule (which was actually always a pointer + anyway): E.g., + + des_key_schedule ks; + + des_set_key_checked(..., &ks); + des_ncbc_encrypt(..., &ks, ...); + + (Note that a later change renames 'des_...' into 'DES_...'.) + [Ben Laurie] + + *) Initial reduction of linker bloat: the use of some functions, such as + PEM causes large amounts of unused functions to be linked in due to + poor organisation. For example pem_all.c contains every PEM function + which has a knock on effect of linking in large amounts of (unused) + ASN1 code. Grouping together similar functions and splitting unrelated + functions prevents this. + [Steve Henson] + + *) Cleanup of EVP macros. + [Ben Laurie] + + *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the + correct _ecb suffix. + [Ben Laurie] + + *) Add initial OCSP responder support to ocsp application. The + revocation information is handled using the text based index + use by the ca application. The responder can either handle + requests generated internally, supplied in files (for example + via a CGI script) or using an internal minimal server. + [Steve Henson] + + *) Add configuration choices to get zlib compression for TLS. + [Richard Levitte] + + *) Changes to Kerberos SSL for RFC 2712 compliance: + 1. Implemented real KerberosWrapper, instead of just using + KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>] + 2. Implemented optional authenticator field of KerberosWrapper. + + Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, + and authenticator structs; see crypto/krb5/. + + Generalized Kerberos calls to support multiple Kerberos libraries. + [Vern Staats <staatsvr@asc.hpc.mil>, + Jeffrey Altman <jaltman@columbia.edu> + via Richard Levitte] + + *) Cause 'openssl speed' to use fully hard-coded DSA keys as it + already does with RSA. testdsa.h now has 'priv_key/pub_key' + values for each of the key sizes rather than having just + parameters (and 'speed' generating keys each time). + [Geoff Thorpe] + + *) Speed up EVP routines. + Before: +encrypt +type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes +des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k +des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k +des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k +decrypt +des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k +des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k +des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k + After: +encrypt +des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k +decrypt +des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k + [Ben Laurie] + + *) Added the OS2-EMX target. + ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte] + + *) Rewrite apps to use NCONF routines instead of the old CONF. New functions + to support NCONF routines in extension code. New function CONF_set_nconf() + to allow functions which take an NCONF to also handle the old LHASH + structure: this means that the old CONF compatible routines can be + retained (in particular wrt extensions) without having to duplicate the + code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. + [Steve Henson] + + *) Enhance the general user interface with mechanisms for inner control + and with possibilities to have yes/no kind of prompts. + [Richard Levitte] + + *) Change all calls to low level digest routines in the library and + applications to use EVP. Add missing calls to HMAC_cleanup() and + don't assume HMAC_CTX can be copied using memcpy(). + [Verdon Walker <VWalker@novell.com>, Steve Henson] + + *) Add the possibility to control engines through control names but with + arbitrary arguments instead of just a string. + 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]. + 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/cancellations. + [Richard Levitte] + + *) Tidy up PKCS#12 attribute handling. Add support for the CSP name + attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. + [Steve Henson] + + *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also + 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 + callback (pem_password_cb) as all other routines that need this + kind of callback. + [Richard Levitte] + + *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with + 256 bit (=32 byte) keys. Of course seeding with more entropy bytes + than this minimum value is recommended. + [Lutz Jaenicke] + + *) New random seeder for OpenVMS, using the system process statistics + that are easily reachable. + [Richard Levitte] + + *) Windows apparently can't transparently handle global + variables defined in DLLs. Initialisations such as: + + const ASN1_ITEM *it = &ASN1_INTEGER_it; + + wont compile. This is used by the any applications that need to + 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] + + *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle + setting of purpose and trust fields. New X509_STORE trust and + purpose functions and tidy up setting in other SSL functions. + [Steve Henson] + + *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE + structure. These are inherited by X509_STORE_CTX when it is + initialised. This allows various defaults to be set in the + X509_STORE structure (such as flags for CRL checking and custom + purpose or trust settings) for functions which only use X509_STORE_CTX + internally such as S/MIME. + + Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and + trust settings if they are not set in X509_STORE. This allows X509_STORE + purposes and trust (in S/MIME for example) to override any set by default. + + Add command line options for CRL checking to smime, s_client and s_server + applications. + [Steve Henson] + + *) Initial CRL based revocation checking. If the CRL checking flag(s) + are set then the CRL is looked up in the X509_STORE structure and + its validity and signature checked, then if the certificate is found + in the CRL the verify fails with a revoked error. + + Various new CRL related callbacks added to X509_STORE_CTX structure. + + Command line options added to 'verify' application to support this. + + This needs some additional work, such as being able to handle multiple + CRLs with different times, extension based lookup (rather than just + by subject name) and ultimately more complete V2 CRL extension + handling. + [Steve Henson] + + *) Add a general user interface API (crypto/ui/). This is designed + to replace things like des_read_password and friends (backward + compatibility functions using this new API are provided). + The purpose is to remove prompting functions from the DES code + section as well as provide for prompting through dialog boxes in + a window system and the like. + [Richard Levitte] + + *) Add "ex_data" support to ENGINE so implementations can add state at a + per-structure level rather than having to store it globally. + [Geoff] + + *) Make it possible for ENGINE structures to be copied when retrieved by + ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. + This causes the "original" ENGINE structure to act like a template, + analogous to the RSA vs. RSA_METHOD type of separation. Because of this + operational state can be localised to each ENGINE structure, despite the + fact they all share the same "methods". New ENGINE structures returned in + this case have no functional references and the return value is the single + structural reference. This matches the single structural reference returned + by ENGINE_by_id() normally, when it is incremented on the pre-existing + ENGINE structure. + [Geoff] + + *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this + needs to match any other type at all we need to manually clear the + tag cache. + [Steve Henson] + + *) Changes to the "openssl engine" utility to include; + - verbosity levels ('-v', '-vv', and '-vvv') that provide information + about an ENGINE's available control commands. + - executing control commands from command line arguments using the + '-pre' and '-post' switches. '-post' is only used if '-t' is + specified and the ENGINE is successfully initialised. The syntax for + the individual commands are colon-separated, for example; + openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so + [Geoff] + + *) New dynamic control command support for ENGINEs. ENGINEs can now + declare their own commands (numbers), names (strings), descriptions, + and input types for run-time discovery by calling applications. A + subset of these commands are implicitly classed as "executable" + depending on their input type, and only these can be invoked through + the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this + can be based on user input, config files, etc). The distinction is + that "executable" commands cannot return anything other than a boolean + result and can only support numeric or string input, whereas some + discoverable commands may only be for direct use through + ENGINE_ctrl(), eg. supporting the exchange of binary data, function + pointers, or other custom uses. The "executable" commands are to + support parameterisations of ENGINE behaviour that can be + unambiguously defined by ENGINEs and used consistently across any + OpenSSL-based application. Commands have been added to all the + existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow + control over shared-library paths without source code alterations. + [Geoff] + + *) Changed all ENGINE implementations to dynamically allocate their + ENGINEs rather than declaring them statically. Apart from this being + necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, + this also allows the implementations to compile without using the + internal engine_int.h header. + [Geoff] + + *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a + 'const' value. Any code that should be able to modify a RAND_METHOD + should already have non-const pointers to it (ie. they should only + modify their own ones). + [Geoff] + + *) Made a variety of little tweaks to the ENGINE code. + - "atalla" and "ubsec" string definitions were moved from header files + to C code. "nuron" string definitions were placed in variables + rather than hard-coded - allowing parameterisation of these values + later on via ctrl() commands. + - Removed unused "#if 0"'d code. + - Fixed engine list iteration code so it uses ENGINE_free() to release + structural references. + - Constified the RAND_METHOD element of ENGINE structures. + - Constified various get/set functions as appropriate and added + missing functions (including a catch-all ENGINE_cpy that duplicates + all ENGINE values onto a new ENGINE except reference counts/state). + - Removed NULL parameter checks in get/set functions. Setting a method + or function to NULL is a way of cancelling out a previously set + value. Passing a NULL ENGINE parameter is just plain stupid anyway + and doesn't justify the extra error symbols and code. + - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for + flags from engine_int.h to engine.h. + - Changed prototypes for ENGINE handler functions (init(), finish(), + ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. + [Geoff] + + *) Implement binary inversion algorithm for BN_mod_inverse in addition + 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 + up to 450 bits. In 64-bit environments, the binary algorithm + appears to be advantageous for much longer moduli; here we use it + for moduli up to 2048 bits. + [Bodo Moeller] + + *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code + could not support the combine flag in choice fields. + [Steve Henson] + + *) Add a 'copy_extensions' option to the 'ca' utility. This copies + extensions from a certificate request to the certificate. + [Steve Henson] + + *) Allow multiple 'certopt' and 'nameopt' options to be separated + by commas. Add 'namopt' and 'certopt' options to the 'ca' config + file: this allows the display of the certificate about to be + signed to be customised, to allow certain fields to be included + or excluded and extension details. The old system didn't display + multicharacter strings properly, omitted fields not in the policy + and couldn't display additional details such as extensions. + [Steve Henson] + + *) Function EC_POINTs_mul for multiple scalar multiplication + of an arbitrary number of elliptic curve points + \sum scalars[i]*points[i], + optionally including the generator defined for the EC_GROUP: + scalar*generator + \sum scalars[i]*points[i]. + + EC_POINT_mul is a simple wrapper function for the typical case + that the point list has just one item (besides the optional + generator). + [Bodo Moeller] + + *) First EC_METHODs for curves over GF(p): + + EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr + operations and provides various method functions that can also + operate with faster implementations of modular arithmetic. + + EC_GFp_mont_method() reuses most functions that are part of + EC_GFp_simple_method, but uses Montgomery arithmetic. + + [Bodo Moeller; point addition and point doubling + implementation directly derived from source code provided by + Lenka Fibikova <fibikova@exp-math.uni-essen.de>] + + *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, + crypto/ec/ec_lib.c): + + Curves are EC_GROUP objects (with an optional group generator) + based on EC_METHODs that are built into the library. + + Points are EC_POINT objects based on EC_GROUP objects. + + Most of the framework would be able to handle curves over arbitrary + finite fields, but as there are no obvious types for fields other + than GF(p), some functions are limited to that for now. + [Bodo Moeller] + + *) Add the -HTTP option to s_server. It is similar to -WWW, but requires + that the file contains a complete HTTP response. + [Richard Levitte] + + *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl + change the def and num file printf format specifier from "%-40sXXX" + to "%-39s XXX". The latter will always guarantee a space after the + field while the former will cause them to run together if the field + is 40 of more characters long. + [Steve Henson] + + *) Constify the cipher and digest 'method' functions and structures + and modify related functions to take constant EVP_MD and EVP_CIPHER + pointers. + [Steve Henson] + + *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them + in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. + [Bodo Moeller] + + *) Modify EVP_Digest*() routines so they now return values. Although the + internal software routines can never fail additional hardware versions + might. + [Steve Henson] + + *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: + + Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 + (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. + + ASN1 error codes + ERR_R_NESTED_ASN1_ERROR + ... + ERR_R_MISSING_ASN1_EOS + were 4 .. 9, conflicting with + ERR_LIB_RSA (= ERR_R_RSA_LIB) + ... + ERR_LIB_PEM (= ERR_R_PEM_LIB). + They are now 58 .. 63 (i.e., just below ERR_R_FATAL). + + Add new error code 'ERR_R_INTERNAL_ERROR'. + [Bodo Moeller] + + *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock + suffices. + [Bodo Moeller] + + *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This + sets the subject name for a new request or supersedes the + subject name in a given request. Formats that can be parsed are + 'CN=Some Name, OU=myOU, C=IT' + and + 'CN=Some Name/OU=myOU/C=IT'. + + Add options '-batch' and '-verbose' to 'openssl req'. + [Massimiliano Pala <madwolf@hackmasters.net>] + + *) Introduce the possibility to access global variables through + functions on platform were that's the best way to handle exporting + global variables in shared libraries. To enable this functionality, + one must configure with "EXPORT_VAR_AS_FN" or defined the C macro + "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter + is normally done by Configure or something similar). + + To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL + in the source file (foo.c) like this: + + OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; + OPENSSL_IMPLEMENT_GLOBAL(double,bar); + + To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL + and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: + + OPENSSL_DECLARE_GLOBAL(int,foo); + #define foo OPENSSL_GLOBAL_REF(foo) + OPENSSL_DECLARE_GLOBAL(double,bar); + #define bar OPENSSL_GLOBAL_REF(bar) + + The #defines are very important, and therefore so is including the + 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 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 + go into the Windows .def files as well as a number of fixes and code + cleanup (among others, algorithm keywords are now sorted + lexicographically to avoid constant rewrites). + [Richard Levitte] + + *) In BN_div() keep a copy of the sign of 'num' before writing the + result to 'rm' because if rm==num the value will be overwritten + and produce the wrong result if 'num' is negative: this caused + problems with BN_mod() and BN_nnmod(). + [Steve Henson] + + *) Function OCSP_request_verify(). This checks the signature on an + OCSP request and verifies the signer certificate. The signer + certificate is just checked for a generic purpose and OCSP request + trust settings. + [Steve Henson] + + *) Add OCSP_check_validity() function to check the validity of OCSP + 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 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 + ocsp utility. + [Steve Henson] + + *) If signature or public key algorithm is unrecognized print out its + OID rather that just UNKNOWN. + [Steve Henson] + + *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and + OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate + ID to be generated from the issuer certificate alone which can then be + passed to OCSP_id_issuer_cmp(). + [Steve Henson] + + *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new + ASN1 modules to export functions returning ASN1_ITEM pointers + instead of the ASN1_ITEM structures themselves. This adds several + new macros which allow the underlying ASN1 function/structure to + be accessed transparently. As a result code should not use ASN1_ITEM + references directly (such as &X509_it) but instead use the relevant + macros (such as ASN1_ITEM_rptr(X509)). This option is to allow + use of the new ASN1 code on platforms where exporting structures + is problematical (for example in shared libraries) but exporting + functions returning pointers to structures is not. + [Steve Henson] + + *) Add support for overriding the generation of SSL/TLS session IDs. + These callbacks can be registered either in an SSL_CTX or per SSL. + The purpose of this is to allow applications to control, if they wish, + the arbitrary values chosen for use as session IDs, particularly as it + can be useful for session caching in multiple-server environments. A + command-line switch for testing this (and any client code that wishes + to use such a feature) has been added to "s_server". + [Geoff Thorpe, Lutz Jaenicke] + + *) 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. + [Richard Levitte] + + *) Make all configuration macros available for application by making + sure they are available in opensslconf.h, by giving them names starting + with "OPENSSL_" to avoid conflicts with other packages and by making + sure e_os2.h will cover all platform-specific cases together with + opensslconf.h. + Additionally, it is now possible to define configuration/platform- + specific names (called "system identities"). In the C code, these + are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another + macro with the name beginning with "OPENSSL_SYS_", which is determined + from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on + what is available. + [Richard Levitte] + + *) New option -set_serial to 'req' and 'x509' this allows the serial + number to use to be specified on the command line. Previously self + signed certificates were hard coded with serial number 0 and the + CA options of 'x509' had to use a serial number in a file which was + auto incremented. + [Steve Henson] + + *) New options to 'ca' utility to support V2 CRL entry extensions. + Currently CRL reason, invalidity date and hold instruction are + supported. Add new CRL extensions to V3 code and some new objects. + [Steve Henson] + + *) New function EVP_CIPHER_CTX_set_padding() this is used to + disable standard block padding (aka PKCS#5 padding) in the EVP + API, which was previously mandatory. This means that the data is + not padded in any way and so the total length much be a multiple + of the block size, otherwise an error occurs. + [Steve Henson] + + *) Initial (incomplete) OCSP SSL support. + [Steve Henson] + + *) New function OCSP_parse_url(). This splits up a URL into its host, + port and path components: primarily to parse OCSP URLs. New -url + option to ocsp utility. + [Steve Henson] + + *) New nonce behavior. The return value of OCSP_check_nonce() now + reflects the various checks performed. Applications can decide + whether to tolerate certain situations such as an absent nonce + in a response when one was present in a request: the ocsp application + just prints out a warning. New function OCSP_add1_basic_nonce() + this is to allow responders to include a nonce in a response even if + the request is nonce-less. + [Steve Henson] + + *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are + skipped when using openssl x509 multiple times on a single input file, + e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". + [Bodo Moeller] + + *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() + set string type: to handle setting ASN1_TIME structures. Fix ca + utility to correctly initialize revocation date of CRLs. + [Steve Henson] + + *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override + 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 + to aes and add a new 'exist' option to print out symbols that don't + appear to exist. + [Steve Henson] + + *) Additional options to ocsp utility to allow flags to be set and + additional certificates supplied. + [Steve Henson] + + *) Add the option -VAfile to 'openssl ocsp', so the user can give the + OCSP client a number of certificate to only verify the response + signature against. + [Richard Levitte] + + *) Update Rijndael code to version 3.0 and change EVP AES ciphers to + handle the new API. Currently only ECB, CBC modes supported. Add new + AES OIDs. + + Add TLS AES ciphersuites as described in the "AES Ciphersuites + for TLS" draft-ietf-tls-ciphersuite-06.txt. As these are not yet + official, they are not enabled by default and are not even part + of the "ALL" ciphersuite alias; for now, they must be explicitly + requested by specifying the new "AESdraft" ciphersuite alias. If + you want the default ciphersuite list plus the new ciphersuites, + use "DEFAULT:AESdraft:@STRENGTH". + [Ben Laurie, Steve Henson, Bodo Moeller] + + *) New function OCSP_copy_nonce() to copy nonce value (if present) from + request to response. + [Steve Henson] + + *) Functions for OCSP responders. OCSP_request_onereq_count(), + OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() + 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 + 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() + (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() + (converts ASN1_TIME to GeneralizedTime). + [Steve Henson] + + *) 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 the public_key + contents: this is used in various key identifiers. + [Steve Henson] + + *) Make sk_sort() tolerate a NULL argument. + [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>] + + *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates + passed by the function are trusted implicitly. If any of them signed the + response then it is assumed to be valid and is not verified. + [Steve Henson] + + *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT + to data. This was previously part of the PKCS7 ASN1 code. This + was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. + [Steve Henson, reported by Kenneth R. Robinette + <support@securenetterm.com>] + + *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 + routines: without these tracing memory leaks is very painful. + Fix leaks in PKCS12 and PKCS7 routines. + [Steve Henson] + + *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). + Previously it initialised the 'type' argument to V_ASN1_UTCTIME which + effectively meant GeneralizedTime would never be used. Now it + is initialised to -1 but X509_time_adj() now has to check the value + and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or + V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. + [Steve Henson, reported by Kenneth R. Robinette + <support@securenetterm.com>] + + *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously + result in a zero length in the ASN1_INTEGER structure which was + not consistent with the structure when d2i_ASN1_INTEGER() was used + and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() + to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() + where it did not print out a minus for negative ASN1_INTEGER. + [Steve Henson] + + *) Add summary printout to ocsp utility. The various functions which + convert status values to strings have been renamed to: + OCSP_response_status_str(), OCSP_cert_status_str() and + OCSP_crl_reason_str() and are no longer static. New options + to verify nonce values and to disable verification. OCSP response + printout format cleaned up. + [Steve Henson] + + *) Add additional OCSP certificate checks. These are those specified + in RFC2560. This consists of two separate checks: the CA of the + certificate being checked must either be the OCSP signer certificate + or the issuer of the OCSP signer certificate. In the latter case the + OCSP signer certificate must contain the OCSP signing extended key + usage. This check is performed by attempting to match the OCSP + signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash + in the OCSP_CERTID structures of the response. + [Steve Henson] + + *) Initial OCSP certificate verification added to OCSP_basic_verify() + and related routines. This uses the standard OpenSSL certificate + verify routines to perform initial checks (just CA validity) and + to obtain the certificate chain. Then additional checks will be + performed on the chain. Currently the root CA is checked to see + if it is explicitly trusted for OCSP signing. This is used to set + a root CA as a global signing root: that is any certificate that + chains to that CA is an acceptable OCSP signing certificate. + [Steve Henson] + + *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 + extensions from a separate configuration file. + As when reading extensions from the main configuration file, + the '-extensions ...' option may be used for specifying the + section to use. + [Massimiliano Pala <madwolf@comune.modena.it>] + + *) New OCSP utility. Allows OCSP requests to be generated or + read. The request can be sent to a responder and the output + parsed, outputed or printed in text form. Not complete yet: + still needs to check the OCSP response validity. + [Steve Henson] + + *) New subcommands for 'openssl ca': + 'openssl ca -status <serial>' prints the status of the cert with + the given serial number (according to the index file). + 'openssl ca -updatedb' updates the expiry status of certificates + in the index file. + [Massimiliano Pala <madwolf@comune.modena.it>] + + *) New '-newreq-nodes' command option to CA.pl. This is like + '-newreq', but calls 'openssl req' with the '-nodes' option + so that the resulting key is not encrypted. + [Damien Miller <djm@mindrot.org>] + + *) New configuration for the GNU Hurd. + [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte] + + *) Initial code to implement OCSP basic response verify. This + is currently incomplete. Currently just finds the signer's + certificate and verifies the signature on the response. + [Steve Henson] + + *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in + value of OPENSSLDIR. This is available via the new '-d' option + to 'openssl version', and is also included in 'openssl version -a'. + [Bodo Moeller] + + *) Allowing defining memory allocation callbacks that will be given + file name and line number information in additional arguments + (a const char* and an int). The basic functionality remains, as + well as the original possibility to just replace malloc(), + realloc() and free() by functions that do not know about these + additional arguments. To register and find out the current + settings for extended allocation functions, the following + functions are provided: + + CRYPTO_set_mem_ex_functions + CRYPTO_set_locked_mem_ex_functions + CRYPTO_get_mem_ex_functions + CRYPTO_get_locked_mem_ex_functions + + These work the same way as CRYPTO_set_mem_functions and friends. + CRYPTO_get_[locked_]mem_functions now writes 0 where such an + extended allocation function is enabled. + Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where + a conventional allocation function is enabled. + [Richard Levitte, Bodo Moeller] + + *) Finish off removing the remaining LHASH function pointer casts. + There should no longer be any prototype-casting required when using + the LHASH abstraction, and any casts that remain are "bugs". See + the callback types and macros at the head of lhash.h for details + (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). + [Geoff Thorpe] + + *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. + If /dev/[u]random devices are not available or do not return enough + entropy, EGD style sockets (served by EGD or PRNGD) will automatically + be queried. + The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and + /etc/entropy will be queried once each in this sequence, quering stops + when enough entropy was collected without querying more sockets. + [Lutz Jaenicke] + + *) Change the Unix RAND_poll() variant to be able to poll several + random devices, as specified by DEVRANDOM, until a sufficient amount + of data has been collected. We spend at most 10 ms on each file + (select timeout) and read in non-blocking mode. DEVRANDOM now + defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" + (previously it was just the string "/dev/urandom"), so on typical + platforms the 10 ms delay will never occur. + Also separate out the Unix variant to its own file, rand_unix.c. + For VMS, there's a currently-empty rand_vms.c. + [Richard Levitte] + + *) Move OCSP client related routines to ocsp_cl.c. These + provide utility functions which an application needing + to issue a request to an OCSP responder and analyse the + response will typically need: as opposed to those which an + OCSP responder itself would need which will be added later. + + OCSP_request_sign() signs an OCSP request with an API similar + to PKCS7_sign(). OCSP_response_status() returns status of OCSP + response. OCSP_response_get1_basic() extracts basic response + from response. OCSP_resp_find_status(): finds and extracts status + information from an OCSP_CERTID structure (which will be created + when the request structure is built). These are built from lower + level functions which work on OCSP_SINGLERESP structures but + wont normally be used unless the application wishes to examine + extensions in the OCSP response for example. + + Replace nonce routines with a pair of functions. + OCSP_request_add1_nonce() adds a nonce value and optionally + generates a random value. OCSP_check_nonce() checks the + validity of the nonce in an OCSP response. + [Steve Henson] + + *) Change function OCSP_request_add() to OCSP_request_add0_id(). + This doesn't copy the supplied OCSP_CERTID and avoids the + need to free up the newly created id. Change return type + to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. + This can then be used to add extensions to the request. + Deleted OCSP_request_new(), since most of its functionality + is now in OCSP_REQUEST_new() (and the case insensitive name + clash) apart from the ability to set the request name which + will be added elsewhere. + [Steve Henson] + + *) Update OCSP API. Remove obsolete extensions argument from + various functions. Extensions are now handled using the new + OCSP extension code. New simple OCSP HTTP function which + can be used to send requests and parse the response. + [Steve Henson] + + *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new + ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN + uses the special reorder version of SET OF to sort the attributes + and reorder them to match the encoded order. This resolves a long + standing problem: a verify on a PKCS7 structure just after signing + it used to fail because the attribute order did not match the + encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: + it uses the received order. This is necessary to tolerate some broken + software that does not order SET OF. This is handled by encoding + as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) + to produce the required SET OF. + [Steve Henson] + + *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and + OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header + files to get correct declarations of the ASN.1 item variables. + [Richard Levitte] + + *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many + PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: + asn1_check_tlen() would sometimes attempt to use 'ctx' when it was + NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). + New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant + ASN1_ITEM and no wrapper functions. + [Steve Henson] + + *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These + replace the old function pointer based I/O routines. Change most of + the *_d2i_bio() and *_d2i_fp() functions to use these. + [Steve Henson] + + *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor + lines, recognice more "algorithms" that can be deselected, and make + it complain about algorithm deselection that isn't recognised. + [Richard Levitte] + + *) New ASN1 functions to handle dup, sign, verify, digest, pack and + unpack operations in terms of ASN1_ITEM. Modify existing wrappers + to use new functions. Add NO_ASN1_OLD which can be set to remove + some old style ASN1 functions: this can be used to determine if old + code will still work when these eventually go away. + [Steve Henson] + + *) New extension functions for OCSP structures, these follow the + same conventions as certificates and CRLs. + [Steve Henson] + + *) New function X509V3_add1_i2d(). This automatically encodes and + adds an extension. Its behaviour can be customised with various + flags to append, replace or delete. Various wrappers added for + certifcates and CRLs. + [Steve Henson] + + *) Fix to avoid calling the underlying ASN1 print routine when + an extension cannot be parsed. Correct a typo in the + OCSP_SERVICELOC extension. Tidy up print OCSP format. + [Steve Henson] + + *) Make mkdef.pl parse some of the ASN1 macros and add apropriate + entries for variables. + [Steve Henson] + + *) Add functionality to apps/openssl.c for detecting locking + problems: As the program is single-threaded, all we have + to do is register a locking callback using an array for + storing which locks are currently held by the program. + [Bodo Moeller] + + *) Use a lock around the call to CRYPTO_get_ex_new_index() in + SSL_get_ex_data_X509_STORE_idx(), which is used in + ssl_verify_cert_chain() and thus can be called at any time + during TLS/SSL handshakes so that thread-safety is essential. + Unfortunately, the ex_data design is not at all suited + for multi-threaded use, so it probably should be abolished. + [Bodo Moeller] + + *) Added Broadcom "ubsec" ENGINE to OpenSSL. + [Broadcom, tweaked and integrated by Geoff Thorpe] + + *) Move common extension printing code to new function + X509V3_print_extensions(). Reorganise OCSP print routines and + implement some needed OCSP ASN1 functions. Add OCSP extensions. + [Steve Henson] + + *) New function X509_signature_print() to remove duplication in some + print routines. + [Steve Henson] + + *) Add a special meaning when SET OF and SEQUENCE OF flags are both + set (this was treated exactly the same as SET OF previously). This + is used to reorder the STACK representing the structure to match the + encoding. This will be used to get round a problem where a PKCS7 + structure which was signed could not be verified because the STACK + order did not reflect the encoded order. + [Steve Henson] + + *) Reimplement the OCSP ASN1 module using the new code. + [Steve Henson] + + *) Update the X509V3 code to permit the use of an ASN1_ITEM structure + for its ASN1 operations. The old style function pointers still exist + for now but they will eventually go away. + [Steve Henson] + + *) Merge in replacement ASN1 code from the ASN1 branch. This almost + completely replaces the old ASN1 functionality with a table driven + encoder and decoder which interprets an ASN1_ITEM structure describing + the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is + largely maintained. Almost all of the old asn1_mac.h macro based ASN1 + has also been converted to the new form. + [Steve Henson] + + *) Change BN_mod_exp_recp so that negative moduli are tolerated + (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set + so that BN_mod_exp_mont and BN_mod_exp_mont_word work + for negative moduli. + [Bodo Moeller] + + *) Fix BN_uadd and BN_usub: Always return non-negative results instead + of not touching the result's sign bit. + [Bodo Moeller] + + *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be + set. + [Bodo Moeller] + + *) Changed the LHASH code to use prototypes for callbacks, and created + macros to declare and implement thin (optionally static) functions + that provide type-safety and avoid function pointer casting for the + type-specific callbacks. + [Geoff Thorpe] + + *) Added Kerberos Cipher Suites to be used with TLS, as written in + RFC 2712. + [Veers Staats <staatsvr@asc.hpc.mil>, + Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte] + + *) Reformat the FAQ so the different questions and answers can be divided + in sections depending on the subject. + [Richard Levitte] + + *) Have the zlib compression code load ZLIB.DLL dynamically under + Windows. + [Richard Levitte] + + *) New function BN_mod_sqrt for computing square roots modulo a prime + (using the probabilistic Tonelli-Shanks algorithm unless + p == 3 (mod 4) or p == 5 (mod 8), which are cases that can + be handled deterministically). + [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] + + *) Make BN_mod_inverse faster by explicitly handling small quotients + in the Euclid loop. (Speed gain about 20% for small moduli [256 or + 512 bits], about 30% for larger ones [1024 or 2048 bits].) + [Bodo Moeller] + + *) New function BN_kronecker. + [Bodo Moeller] + + *) Fix BN_gcd so that it works on negative inputs; the result is + positive unless both parameters are zero. + Previously something reasonably close to an infinite loop was + possible because numbers could be growing instead of shrinking + in the implementation of Euclid's algorithm. + [Bodo Moeller] + + *) Fix BN_is_word() and BN_is_one() macros to take into account the + sign of the number in question. + + Fix BN_is_word(a,w) to work correctly for w == 0. + + The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) + because its test if the absolute value of 'a' equals 'w'. + Note that BN_abs_is_word does *not* handle w == 0 reliably; + it exists mostly for use in the implementations of BN_is_zero(), + BN_is_one(), and BN_is_word(). + [Bodo Moeller] + + *) New function BN_swap. + [Bodo Moeller] + + *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that + the exponentiation functions are more likely to produce reasonable + results on negative inputs. + [Bodo Moeller] + + *) Change BN_mod_mul so that the result is always non-negative. + Previously, it could be negative if one of the factors was negative; + I don't think anyone really wanted that behaviour. + [Bodo Moeller] + + *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c + (except for exponentiation, which stays in crypto/bn/bn_exp.c, + and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) + and add new functions: + + BN_nnmod + BN_mod_sqr + BN_mod_add + BN_mod_add_quick + BN_mod_sub + BN_mod_sub_quick + BN_mod_lshift1 + BN_mod_lshift1_quick + BN_mod_lshift + BN_mod_lshift_quick + + These functions always generate non-negative results. + + BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r + such that |m| < r < 0, BN_nnmod will output rem + |m| instead). + + BN_mod_XXX_quick(r, a, [b,] m) generates the same result as + BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] + be reduced modulo m. + [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] + + *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there + was actually never needed) and in BN_mul(). The removal in BN_mul() + required a small change in bn_mul_part_recursive() and the addition + of the functions bn_cmp_part_words(), bn_sub_part_words() and + bn_add_part_words(), which do the same thing as bn_cmp_words(), + bn_sub_words() and bn_add_words() except they take arrays with + differing sizes. + [Richard Levitte] + + *) In 'openssl passwd', verify passwords read from the terminal + unless the '-salt' option is used (which usually means that + verification would just waste user's time since the resulting + hash is going to be compared with some given password hash) + or the new '-noverify' option is used. + + This is an incompatible change, but it does not affect + non-interactive use of 'openssl passwd' (passwords on the command + line, '-stdin' option, '-in ...' option) and thus should not + cause any problems. + [Bodo Moeller] + + *) Remove all references to RSAref, since there's no more need for it. + [Richard Levitte] + + *) Make DSO load along a path given through an environment variable + (SHLIB_PATH) with shl_load(). + [Richard Levitte] + + *) Constify the ENGINE code as a result of BIGNUM constification. + Also constify the RSA code and most things related to it. In a + few places, most notable in the depth of the ASN.1 code, ugly + casts back to non-const were required (to be solved at a later + time) + [Richard Levitte] + + *) Make it so the openssl application has all engines loaded by default. + [Richard Levitte] + + *) Constify the BIGNUM routines a little more. + [Richard Levitte] + + *) Add the following functions: + + ENGINE_load_cswift() + ENGINE_load_chil() + ENGINE_load_atalla() + ENGINE_load_nuron() + ENGINE_load_builtin_engines() + + That way, an application can itself choose if external engines that + are built-in in OpenSSL shall ever be used or not. The benefit is + that applications won't have to be linked with libdl or other dso + libraries unless it's really needed. + + Changed 'openssl engine' to load all engines on demand. + Changed the engine header files to avoid the duplication of some + declarations (they differed!). + [Richard Levitte] + + *) 'openssl engine' can now list capabilities. + [Richard Levitte] + + *) Better error reporting in 'openssl engine'. + [Richard Levitte] + + *) Never call load_dh_param(NULL) in s_server. + [Bodo Moeller] + + *) Add engine application. It can currently list engines by name and + identity, and test if they are actually available. + [Richard Levitte] + + *) Improve RPM specification file by forcing symbolic linking and making + sure the installed documentation is also owned by root.root. + [Damien Miller <djm@mindrot.org>] + + *) Give the OpenSSL applications more possibilities to make use of + keys (public as well as private) handled by engines. + [Richard Levitte] + + *) Add OCSP code that comes from CertCo. + [Richard Levitte] + + *) Add VMS support for the Rijndael code. + [Richard Levitte] + + *) Added untested support for Nuron crypto accelerator. + [Ben Laurie] + + *) Add support for external cryptographic devices. This code was + previously distributed separately as the "engine" branch. + [Geoff Thorpe, Richard Levitte] + + *) Rework the filename-translation in the DSO code. It is now possible to + have far greater control over how a "name" is turned into a filename + depending on the operating environment and any oddities about the + different shared library filenames on each system. + [Geoff Thorpe] + + *) Support threads on FreeBSD-elf in Configure. + [Richard Levitte] + + *) Fix for SHA1 assembly problem with MASM: it produces + warnings about corrupt line number information when assembling + with debugging information. This is caused by the overlapping + of two sections. + [Bernd Matthes <mainbug@celocom.de>, Steve Henson] + + *) NCONF changes. + NCONF_get_number() has no error checking at all. As a replacement, + NCONF_get_number_e() is defined (_e for "error checking") and is + promoted strongly. The old NCONF_get_number is kept around for + binary backward compatibility. + Make it possible for methods to load from something other than a BIO, + by providing a function pointer that is given a name instead of a BIO. + For example, this could be used to load configuration data from an + LDAP server. + [Richard Levitte] + + *) Fix for non blocking accept BIOs. Added new I/O special reason + BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs + with non blocking I/O was not possible because no retry code was + implemented. Also added new SSL code SSL_WANT_ACCEPT to cover + this case. + [Steve Henson] + + *) Added the beginnings of Rijndael support. + [Ben Laurie] + + *) Fix for bug in DirectoryString mask setting. Add support for + X509_NAME_print_ex() in 'req' and X509_print_ex() function + to allow certificate printing to more controllable, additional + 'certopt' option to 'x509' to allow new printing options to be + set. + [Steve Henson] + + *) Clean old EAY MD5 hack from e_os.h. + [Richard Levitte] + + Changes between 0.9.6c and 0.9.6d [XX xxx 2002] + + *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not + encoded as NULL) with id-dsa-with-sha1. + [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller] + + *) Check various X509_...() return values in apps/req.c. + [Nils Larsch <nla@trustcenter.de>] + + *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: + an end-of-file condition would erronously be flagged, when the CRLF + was just at the end of a processed block. The bug was discovered when + processing data through a buffering memory BIO handing the data to a + BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov + <ptsekov@syntrex.com> and Nedelcho Stanev. + [Lutz Jaenicke] + + *) Implement a countermeasure against a vulnerability recently found + in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment + before application data chunks to avoid the use of known IVs + with data potentially chosen by the attacker. + [Bodo Moeller] + + *) Fix length checks in ssl3_get_client_hello(). + [Bodo Moeller] + + *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently + to prevent ssl3_read_internal() from incorrectly assuming that + ssl3_read_bytes() found application data while handshake + processing was enabled when in fact s->s3->in_read_app_data was + merely automatically cleared during the initial handshake. + [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>] + + *) Fix object definitions for Private and Enterprise: they were not + recognized in their shortname (=lowercase) representation. Extend + obj_dat.pl to issue an error when using undefined keywords instead + of silently ignoring the problem (Svenning Sorensen + <sss@sss.dnsalias.net>). + [Lutz Jaenicke] + + *) Fix DH_generate_parameters() so that it works for 'non-standard' + generators, i.e. generators other than 2 and 5. (Previously, the + code did not properly initialise the 'add' and 'rem' values to + BN_generate_prime().) + + In the new general case, we do not insist that 'generator' is + actually a primitive root: This requirement is rather pointless; + a generator of the order-q subgroup is just as good, if not + better. + [Bodo Moeller] + + *) Map new X509 verification errors to alerts. Discovered and submitted by + Tom Wu <tom@arcot.com>. + [Lutz Jaenicke] + + *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from + returning non-zero before the data has been completely received + when using non-blocking I/O. + [Bodo Moeller; problem pointed out by John Hughes] + + *) Some of the ciphers missed the strength entry (SSL_LOW etc). + [Ben Laurie, Lutz Jaenicke] + + *) Fix bug in SSL_clear(): bad sessions were not removed (found by + Yoram Zahavi <YoramZ@gilian.com>). + [Lutz Jaenicke] + + *) Add information about CygWin 1.3 and on, and preserve proper + configuration for the versions before that. + [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] + + *) Make removal from session cache (SSL_CTX_remove_session()) more robust: + check whether we deal with a copy of a session and do not delete from + the cache in this case. Problem reported by "Izhar Shoshani Levi" + <izhar@checkpoint.com>. + [Lutz Jaenicke] + + *) Do not store session data into the internal session cache, if it + is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP + flag is set). Proposed by Aslam <aslam@funk.com>. + [Lutz Jaenicke] + + *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested + value is 0. + [Richard Levitte] + + *) Add the configuration target linux-s390x. + [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte] + + *) [In 0.9.6d-engine release:] + Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). + [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] + + *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of + ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag + variable as an indication that a ClientHello message has been + received. As the flag value will be lost between multiple + invocations of ssl3_accept when using non-blocking I/O, the + function may not be aware that a handshake has actually taken + place, thus preventing a new session from being added to the + session cache. + + To avoid this problem, we now set s->new_session to 2 instead of + using a local variable. + [Lutz Jaenicke, Bodo Moeller] + + *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) + if the SSL_R_LENGTH_MISMATCH error is detected. + [Geoff Thorpe, Bodo Moeller] + + *) New 'shared_ldflag' column in Configure platform table. + [Richard Levitte] + + *) Fix EVP_CIPHER_mode macro. + ["Dan S. Camper" <dan@bti.net>] + + *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown + type, we must throw them away by setting rr->length to 0. + [D P Chang <dpc@qualys.com>] + + Changes between 0.9.6b and 0.9.6c [21 dec 2001] + + *) Fix BN_rand_range bug pointed out by Dominikus Scherkl + <Dominikus.Scherkl@biodata.com>. (The previous implementation + worked incorrectly for those cases where range = 10..._2 and + 3*range is two bits longer than range.) + [Bodo Moeller] + + *) Only add signing time to PKCS7 structures if it is not already + present. + [Steve Henson] + + *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", + OBJ_ld_ce should be OBJ_id_ce. + Also some ip-pda OIDs in crypto/objects/objects.txt were + incorrect (cf. RFC 3039). + [Matt Cooper, Frederic Giudicelli, Bodo Moeller] + + *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() + returns early because it has nothing to do. + [Andy Schneider <andy.schneider@bjss.co.uk>] + + *) [In 0.9.6c-engine release:] + Fix mutex callback return values in crypto/engine/hw_ncipher.c. + [Andy Schneider <andy.schneider@bjss.co.uk>] + + *) [In 0.9.6c-engine release:] + Add support for Cryptographic Appliance's keyserver technology. + (Use engine 'keyclient') + [Cryptographic Appliances and Geoff Thorpe] + + *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' + is called via tools/c89.sh because arguments have to be + rearranged (all '-L' options must appear before the first object + modules). + [Richard Shapiro <rshapiro@abinitio.com>] + + *) [In 0.9.6c-engine release:] + Add support for Broadcom crypto accelerator cards, backported + from 0.9.7. + [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox] + + *) [In 0.9.6c-engine release:] + Add support for SureWare crypto accelerator cards from + Baltimore Technologies. (Use engine 'sureware') + [Baltimore Technologies and Mark Cox] + + *) [In 0.9.6c-engine release:] + Add support for crypto accelerator cards from Accelerated + Encryption Processing, www.aep.ie. (Use engine 'aep') + [AEP Inc. and Mark Cox] + + *) Add a configuration entry for gcc on UnixWare. + [Gary Benson <gbenson@redhat.com>] + + *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake + messages are stored in a single piece (fixed-length part and + variable-length part combined) and fix various bugs found on the way. + [Bodo Moeller] + + *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() + instead. BIO_gethostbyname() does not know what timeouts are + appropriate, so entries would stay in cache even when they have + become invalid. + [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com> + + *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when + faced with a pathologically small ClientHello fragment that does + not contain client_version: Instead of aborting with an error, + simply choose the highest available protocol version (i.e., + TLS 1.0 unless it is disabled). In practice, ClientHello + messages are never sent like this, but this change gives us + strictly correct behaviour at least for TLS. + [Bodo Moeller] + + *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() + never resets s->method to s->ctx->method when called from within + one of the SSL handshake functions. + [Bodo Moeller; problem pointed out by Niko Baric] + + *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert + (sent using the client's version number) if client_version is + smaller than the protocol version in use. Also change + ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if + the client demanded SSL 3.0 but only TLS 1.0 is enabled; then + the client will at least see that alert. + [Bodo Moeller] + + *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation + correctly. + [Bodo Moeller] + + *) 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>] + + *) 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 OpenUNIX-8 support including shared libraries + (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] + + *) BN_sqr() bug fix. + [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>] + + *) 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] + + *) 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] + + *) 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>] + + *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). + [Andy Polyakov] + + *) Modified SSL library such that the verify_callback that has been set + specificly for an SSL object with SSL_set_verify() is actually being + used. Before the change, a verify_callback set with this function was + ignored and the verify_callback() set in the SSL_CTX at the time of + the call was used. New function X509_STORE_CTX_set_verify_cb() introduced + to allow the necessary settings. + [Lutz Jaenicke] + + *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c + 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] + + *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored + dh->length and always used + + BN_rand_range(priv_key, dh->p). + + BN_rand_range() is not necessary for Diffie-Hellman, and this + specific range makes Diffie-Hellman unnecessarily inefficient if + dh->length (recommended exponent length) is much smaller than the + length of dh->p. We could use BN_rand_range() if the order of + the subgroup was stored in the DH structure, but we only have + dh->length. + + So switch back to + + BN_rand(priv_key, l, ...) + + where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 + otherwise. + [Bodo Moeller] + + *) In + + RSA_eay_public_encrypt + RSA_eay_private_decrypt + RSA_eay_private_encrypt (signing) + RSA_eay_public_decrypt (signature verification) + + (default implementations for RSA_public_encrypt, + RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), + always reject numbers >= n. + [Bodo Moeller] + + *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 + to synchronize access to 'locking_thread'. This is necessary on + systems where access to 'locking_thread' (an 'unsigned long' + variable) is not atomic. + [Bodo Moeller] + + *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID + *before* setting the 'crypto_lock_rand' flag. The previous code had + a race condition if 0 is a valid thread ID. + [Travis Vitek <vitek@roguewave.com>] + + *) Add support for shared libraries under Irix. + [Albert Chin-A-Young <china@thewrittenword.com>] + + *) Add configuration option to build on Linux on both big-endian and + little-endian MIPS. + [Ralf Baechle <ralf@uni-koblenz.de>] + + *) Add the possibility to create shared libraries on HP-UX. + [Richard Levitte] + Changes between 0.9.6a and 0.9.6b [9 Jul 2001] *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) @@ -56,7 +2014,7 @@ [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 @@ -106,7 +2064,7 @@ 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] @@ -748,7 +2706,7 @@ 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: |