OpenSSL CHANGES _______________ Changes between 0.9.1c and 0.9.2 *) Add new certificate file to stack functions, SSL_add_cert_file_to_stack() and SSL_add_cert_dir_to_stack(). These largely supplant SSL_load_client_CA_file(), and can be used to add multiple certs easily to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()). This means that Apache-SSL and similar packages don't have to mess around to add as many CAs as they want to the preferred list. [Ben Laurie] *) Experiment with doxygen documentation. Currently only partially applied to ssl/ssl_lib.c. See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with openssl.doxy as the configuration file. [Ben Laurie] *) Get rid of remaining C++-style comments which strict C compilers hate. [Ralf S. Engelschall, pointed out by Carlos Amengual] *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not compiled in by default: it has problems with large keys. [Steve Henson] *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and DH private keys and/or callback functions which directly correspond to their SSL_CTX_xxx() counterparts but work on a per-connection basis. This is needed for applications which have to configure certificates on a per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis (e.g. s_server). For the RSA certificate situation is makes no difference, but for the DSA certificate situation this fixes the "no shared cipher" problem where the OpenSSL cipher selection procedure failed because the temporary keys were not overtaken from the context and the API provided no way to reconfigure them. The new functions now let applications reconfigure the stuff and they are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh, SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new non-public-API function ssl_cert_instantiate() is used as a helper function and also to reduce code redundancy inside ssl_rsa.c. [Ralf S. Engelschall] *) Move s_server -dcert and -dkey options out of the undocumented feature area because they are useful for the DSA situation and should be recognized by the users. [Ralf S. Engelschall] *) Fix the cipher decision scheme for export ciphers: the export bits are *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within SSL_EXP_MASK. So, the original variable has to be used instead of the already masked variable. [Richard Levitte ] *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c [Richard Levitte ] *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal() from `int' to `unsigned int' because it's a length and initialized by EVP_DigestFinal() which expects an `unsigned int *'. [Richard Levitte ] *) Don't hard-code path to Perl interpreter on shebang line of Configure script. Instead use the usual Shell->Perl transition trick. [Ralf S. Engelschall] *) Make `openssl x509 -noout -modulus' functional also for DSA certificates (in addition to RSA certificates) to match the behaviour of `openssl dsa -noout -modulus' as it's already the case for `openssl rsa -noout -modulus'. For RSA the -modulus is the real "modulus" while for DSA currently the public key is printed (a decision which was already done by `openssl dsa -modulus' in the past) which serves a similar purpose. Additionally the NO_RSA no longer completely removes the whole -modulus option; it now only avoids using the RSA stuff. Same applies to NO_DSA now, too. [Ralf S. Engelschall] *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested BIO. See the source (crypto/evp/bio_ok.c) for more info. [Arne Ansper ] *) Dump the old yucky req code that tried (and failed) to allow raw OIDs to be added. Now both 'req' and 'ca' can use new objects defined in the config file. [Steve Henson] *) Add cool BIO that does syslog (or event log on NT). [Arne Ansper , integrated by Ben Laurie] *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5, TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt. [Ben Laurie] *) Add preliminary config info for new extension code. [Steve Henson] *) Make RSA_NO_PADDING really use no padding. [Ulf Moeller ] *) Generate errors when private/public key check is done. [Ben Laurie] *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support for some CRL extensions and new objects added. [Steve Henson] *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private key usage extension and fuller support for authority key id. [Steve Henson] *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved padding method for RSA, which is recommended for new applications in PKCS #1 v2.0 (RFC 2437, October 1998). OAEP (Optimal Asymmetric Encryption Padding) has better theoretical foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure against Bleichbacher's attack on RSA. [Ulf Moeller , reformatted, corrected and integrated by Ben Laurie] *) Updates to the new SSL compression code [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] *) Fix so that the version number in the master secret, when passed via RSA, checks that if TLS was proposed, but we roll back to SSLv3 (because the server will not accept higher), that the version number is 0x03,0x01, not 0x03,0x00 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c [Steve Henson] *) Support for RAW extensions where an arbitrary extension can be created by including its DER encoding. See apps/openssl.cnf for an example. [Steve Henson] *) Make sure latest Perl versions don't interpret some generated C array code as Perl array code in the crypto/err/err_genc.pl script. [Lars Weber <3weber@informatik.uni-hamburg.de>] *) Modify ms/do_ms.bat to not generate assembly language makefiles since not many people have the assembler. Various Win32 compilation fixes and update to the INSTALL.W32 file with (hopefully) more accurate Win32 build instructions. [Steve Henson] *) Modify configure script 'Configure' to automatically create crypto/date.h file under Win32 and also build pem.h from pem.org. New script util/mkfiles.pl to create the MINFO file on environments that can't do a 'make files': perl util/mkfiles.pl >MINFO should work. [Steve Henson] *) Major rework of DES function declarations, in the pursuit of correctness and purity. As a result, many evil casts evaporated, and some weirdness, too. You may find this causes warnings in your code. Zapping your evil casts will probably fix them. Mostly. [Ben Laurie] *) Fix for a typo in asn1.h. Bug fix to object creation script obj_dat.pl. It considered a zero in an object definition to mean "end of object": none of the objects in objects.h have any zeros so it wasn't spotted. [Steve Henson, reported by Erwann ABALEA ] *) Add support for Triple DES Cipher Block Chaining with Output Feedback Masking (CBCM). In the absence of test vectors, the best I have been able to do is check that the decrypt undoes the encrypt, so far. Send me test vectors if you have them. [Ben Laurie] *) Correct caclulation of key length for export ciphers (too much space was allocated for null ciphers). This has not been tested! [Ben Laurie] *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage message is now correct (it understands "crypto" and "ssl" on its command line). There is also now an "update" option. This will update the util/ssleay.num and util/libeay.num files with any new functions. If you do a: perl util/mkdef.pl crypto ssl update it will update them. [Steve Henson] *) Overhauled the Perl interface (perl/*): - ported BN stuff to OpenSSL's different BN library - made the perl/ source tree CVS-aware - renamed the package from SSLeay to OpenSSL (the files still contain their history because I've copied them in the repository) - removed obsolete files (the test scripts will be replaced by better Test::Harness variants in the future) [Ralf S. Engelschall] *) First cut for a very conservative source tree cleanup: 1. merge various obsolete readme texts into doc/ssleay.txt where we collect the old documents and readme texts. 2. remove the first part of files where I'm already sure that we no longer need them because of three reasons: either they are just temporary files which were left by Eric or they are preserved original files where I've verified that the diff is also available in the CVS via "cvs diff -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for the crypto/md/ stuff). [Ralf S. Engelschall] *) More extension code. Incomplete support for subject and issuer alt name, issuer and authority key id. Change the i2v function parameters and add an extra 'crl' parameter in the X509V3_CTX structure: guess what that's for :-) Fix to ASN1 macro which messed up IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED. [Steve Henson] *) Preliminary support for ENUMERATED type. This is largely copied from the INTEGER code. [Steve Henson] *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy. [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] *) Make sure `make rehash' target really finds the `openssl' program. [Ralf S. Engelschall, Matthias Loepfe ] *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd like to hear about it if this slows down other processors. [Ben Laurie] *) Add CygWin32 platform information to Configure script. [Alan Batie ] *) Fixed ms/32all.bat script: `no_asm' -> `no-asm' [Rainer W. Gerling ] *) New program nseq to manipulate netscape certificate sequences [Steve Henson] *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a few typos. [Steve Henson] *) Fixes to BN code. Previously the default was to define BN_RECURSION but the BN code had some problems that would cause failures when doing certificate verification and some other functions. [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] *) Add ASN1 and PEM code to support netscape certificate sequences. [Steve Henson] *) Add ASN1 and PEM code to support netscape certificate sequences. [Steve Henson] *) Add several PKIX and private extended key usage OIDs. [Steve Henson] *) Modify the 'ca' program to handle the new extension code. Modify openssl.cnf for new extension format, add comments. [Steve Henson] *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req' and add a sample to openssl.cnf so req -x509 now adds appropriate CA extensions. [Steve Henson] *) Continued X509 V3 changes. Add to other makefiles, integrate with the error code, add initial support to X509_print() and x509 application. [Steve Henson] *) Takes a deep breath and start addding X509 V3 extension support code. Add files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this stuff is currently isolated and isn't even compiled yet. [Steve Henson] *) Continuing patches for GeneralizedTime. Fix up certificate and CRL ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print. Removed the versions check from X509 routines when loading extensions: this allows certain broken certificates that don't set the version properly to be processed. [Steve Henson] *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which can still be regenerated with "make depend". [Ben Laurie] *) Spelling mistake in C version of CAST-128. [Ben Laurie, reported by Jeremy Hylton ] *) Changes to the error generation code. The perl script err-code.pl now reads in the old error codes and retains the old numbers, only adding new ones if necessary. It also only changes the .err files if new codes are added. The makefiles have been modified to only insert errors when needed (to avoid needlessly modifying header files). This is done by only inserting errors if the .err file is newer than the auto generated C file. To rebuild all the error codes from scratch (the old behaviour) either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl or delete all the .err files. [Steve Henson] *) CAST-128 was incorrectly implemented for short keys. The C version has been fixed, but is untested. The assembler versions are also fixed, but new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing to regenerate it if needed. [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun Hagino ] *) File was opened incorrectly in randfile.c. [Ulf Möller ] *) Beginning of support for GeneralizedTime. d2i, i2d, check and print functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or GeneralizedTime. ASN1_TIME is the proper type used in certificates et al: it's just almost always a UTCTime. Note this patch adds new error codes so do a "make errors" if there are problems. [Steve Henson] *) Correct Linux 1 recognition in config. [Ulf Möller ] *) Remove pointless MD5 hash when using DSA keys in ca. [Anonymous ] *) Generate an error if given an empty string as a cert directory. Also generate an error if handed NULL (previously returned 0 to indicate an error, but didn't set one). [Ben Laurie, reported by Anonymous ] *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last. [Ben Laurie] *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct parameters. This was causing a warning which killed off the Win32 compile. [Steve Henson] *) Remove C++ style comments from crypto/bn/bn_local.h. [Neil Costigan ] *) The function OBJ_txt2nid was broken. It was supposed to return a nid based on a text string, looking up short and long names and finally "dot" format. The "dot" format stuff didn't work. Added new function OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the OID is not part of the table. [Steve Henson] *) Add prototypes to X509 lookup/verify methods, fixing a bug in X509_LOOKUP_by_alias(). [Ben Laurie] *) Sort openssl functions by name. [Ben Laurie] *) Get the gendsa program working (hopefully) and add it to app list. Remove encryption from sample DSA keys (in case anyone is interested the password was "1234"). [Steve Henson] *) Make _all_ *_free functions accept a NULL pointer. [Frans Heymans ] *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use NULL pointers. [Anonymous ] *) s_server should send the CAfile as acceptable CAs, not its own cert. [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] *) Don't blow it for numeric -newkey arguments to apps/req. [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] *) Temp key "for export" tests were wrong in s3_srvr.c. [Anonymous ] *) Add prototype for temp key callback functions SSL_CTX_set_tmp_{rsa,dh}_callback(). [Ben Laurie] *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey(). [Steve Henson] *) X509_name_add_entry() freed the wrong thing after an error. [Arne Ansper ] *) rsa_eay.c would attempt to free a NULL context. [Arne Ansper ] *) BIO_s_socket() had a broken should_retry() on Windoze. [Arne Ansper ] *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH. [Arne Ansper ] *) Make sure the already existing X509_STORE->depth variable is initialized in X509_STORE_new(), but document the fact that this variable is still unused in the certificate verification process. [Ralf S. Engelschall] *) Fix the various library and apps files to free up pkeys obtained from X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions. [Steve Henson] *) Fix reference counting in X509_PUBKEY_get(). This makes demos/maurice/example2.c work, amongst others, probably. [Steve Henson and Ben Laurie] *) First cut of a cleanup for apps/. First the `ssleay' program is now named `openssl' and second, the shortcut symlinks for the `openssl ' are no longer created. This way we have a single and consistent command line interface `openssl ', similar to `cvs '. [Ralf S. Engelschall, Paul Sutton and Ben Laurie] *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey BIT STRING wrapper always have zero unused bits. [Steve Henson] *) Add CA.pl, perl version of CA.sh, add extended key usage OID. [Steve Henson] *) Make the top-level INSTALL documentation easier to understand. [Paul Sutton] *) Makefiles updated to exit if an error occurs in a sub-directory make (including if user presses ^C) [Paul Sutton] *) Make Montgomery context stuff explicit in RSA data structure. [Ben Laurie] *) Fix build order of pem and err to allow for generated pem.h. [Ben Laurie] *) Fix renumbering bug in X509_NAME_delete_entry(). [Ben Laurie] *) Enhanced the err-ins.pl script so it makes the error library number global and can add a library name. This is needed for external ASN1 and other error libraries. [Steve Henson] *) Fixed sk_insert which never worked properly. [Steve Henson] *) Fix ASN1 macros so they can handle indefinite length construted EXPLICIT tags. Some non standard certificates use these: they can now be read in. [Steve Henson] *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc) into a single doc/ssleay.txt bundle. This way the information is still preserved but no longer messes up this directory. Now it's new room for the new set of documenation files. [Ralf S. Engelschall] *) SETs were incorrectly DER encoded. This was a major pain, because they shared code with SEQUENCEs, which aren't coded the same. This means that almost everything to do with SETs or SEQUENCEs has either changed name or number of arguments. [Ben Laurie, based on a partial fix by GP Jayan ] *) Fix test data to work with the above. [Ben Laurie] *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but was already fixed by Eric for 0.9.1 it seems. [Ben Laurie - pointed out by Ulf Möller ] *) Autodetect FreeBSD3. [Ben Laurie] *) Fix various bugs in Configure. This affects the following platforms: nextstep ncr-scde unixware-2.0 unixware-2.0-pentium sco5-cc. [Ben Laurie] *) Eliminate generated files from CVS. Reorder tests to regenerate files before they are needed. [Ben Laurie] *) Generate Makefile.ssl from Makefile.org (to keep CVS happy). [Ben Laurie] Changes between 0.9.1b and 0.9.1c *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and changed SSLeay to OpenSSL in version strings. [Ralf S. Engelschall] *) Some fixups to the top-level documents. [Paul Sutton] *) Fixed the nasty bug where rsaref.h was not found under compile-time because the symlink to include/ was missing. [Ralf S. Engelschall] *) Incorporated the popular no-RSA/DSA-only patches which allow to compile a RSA-free SSLeay. [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall] *) Fixed nasty rehash problem under `make -f Makefile.ssl links' when "ssleay" is still not found. [Ralf S. Engelschall] *) Added more platforms to Configure: Cray T3E, HPUX 11, [Ralf S. Engelschall, Beckmann ] *) Updated the README file. [Ralf S. Engelschall] *) Added various .cvsignore files in the CVS repository subdirs to make a "cvs update" really silent. [Ralf S. Engelschall] *) Recompiled the error-definition header files and added missing symbols to the Win32 linker tables. [Ralf S. Engelschall] *) Cleaned up the top-level documents; o new files: CHANGES and LICENSE o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay o merged COPYRIGHT into LICENSE o removed obsolete TODO file o renamed MICROSOFT to INSTALL.W32 [Ralf S. Engelschall] *) Removed dummy files from the 0.9.1b source tree: crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f [Ralf S. Engelschall] *) Added various platform portability fixes. [Mark J. Cox] *) The Genesis of the OpenSSL rpject: We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A. Young and Tim J. Hudson created while they were working for C2Net until summer 1998. [The OpenSSL Project] Changes between 0.9.0b and 0.9.1b *) Updated a few CA certificates under certs/ [Eric A. Young] *) Changed some BIGNUM api stuff. [Eric A. Young] *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD, DGUX x86, Linux Alpha, etc. [Eric A. Young] *) New COMP library [crypto/comp/] for SSL Record Layer Compression: RLE (dummy implemented) and ZLIB (really implemented when ZLIB is available). [Eric A. Young] *) Add -strparse option to asn1pars program which parses nested binary structures [Dr Stephen Henson ] *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs. [Eric A. Young] *) DSA fix for "ca" program. [Eric A. Young] *) Added "-genkey" option to "dsaparam" program. [Eric A. Young] *) Added RIPE MD160 (rmd160) message digest. [Eric A. Young] *) Added -a (all) option to "ssleay version" command. [Eric A. Young] *) Added PLATFORM define which is the id given to Configure. [Eric A. Young] *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking. [Eric A. Young] *) Extended the ASN.1 parser routines. [Eric A. Young] *) Extended BIO routines to support REUSEADDR, seek, tell, etc. [Eric A. Young] *) Added a BN_CTX to the BN library. [Eric A. Young] *) Fixed the weak key values in DES library [Eric A. Young] *) Changed API in EVP library for cipher aliases. [Eric A. Young] *) Added support for RC2/64bit cipher. [Eric A. Young] *) Converted the lhash library to the crypto/mem.c functions. [Eric A. Young] *) Added more recognized ASN.1 object ids. [Eric A. Young] *) Added more RSA padding checks for SSL/TLS. [Eric A. Young] *) Added BIO proxy/filter functionality. [Eric A. Young] *) Added extra_certs to SSL_CTX which can be used send extra CA certificates to the client in the CA cert chain sending process. It can be configured with SSL_CTX_add_extra_chain_cert(). [Eric A. Young] *) Now Fortezza is denied in the authentication phase because this is key exchange mechanism is not supported by SSLeay at all. [Eric A. Young] *) Additional PKCS1 checks. [Eric A. Young] *) Support the string "TLSv1" for all TLS v1 ciphers. [Eric A. Young] *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the ex_data index of the SSL context in the X509_STORE_CTX ex_data. [Eric A. Young] *) Fixed a few memory leaks. [Eric A. Young] *) Fixed various code and comment typos. [Eric A. Young] *) A minor bug in ssl/s3_clnt.c where there would always be 4 0 bytes sent in the client random. [Edward Bishop ]