CHANGES

   1
   2  OpenSSL CHANGES
   3  _______________
   4
   5
   6  Changes between 0.9.2b and 0.9.3
   7
   8   *) Fix typos in error codes.
   9      [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
  10
  11   *) Remove defunct assembler files from Configure.
  12      [Ulf Möller]
  13
  14   *) SPARC v8 assembler BIGNUM implementation.
  15      [Andy Polyakov <appro@fy.chalmers.se>]
  16
  17   *) Support for Certificate Policies extension: both print and set.
  18      Various additions to support the r2i method this extension will use.
  19      [Steve Henson]
  20
  21   *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
  22      return a const string when you are expecting an allocated buffer.
  23      [Ben Laurie]
  24
  25   *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
  26      types DirectoryString and DisplayText.
  27      [Steve Henson]
  28
  29   *) Add code to allow r2i extensions to access the configuration database,
  30      add an LHASH database driver and add several ctx helper functions.
  31      [Steve Henson]
  32
  33   *) Fix an evil bug in bn_expand2() which caused various BN functions to
  34      fail when they extended the size of a BIGNUM.
  35      [Steve Henson]
  36
  37   *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
  38      support typesafe stack.
  39      [Steve Henson]
  40
  41   *) Fix typo in SSL_[gs]et_options().
  42      [Nils Frostberg <nils@medcom.se>]
  43
  44   *) Delete various functions and files that belonged to the (now obsolete)
  45      old X509V3 handling code.
  46      [Steve Henson]
  47
  48   *) New Configure option "rsaref".
  49      [Ulf Möller]
  50
  51   *) Don't auto-generate pem.h.
  52      [Bodo Moeller]
  53
  54   *) Introduce type-safe ASN.1 SETs.
  55      [Ben Laurie]
  56
  57   *) Introduce type-safe STACKs. This will almost certainly break lots of code
  58      that links with OpenSSL (well at least cause lots of warnings), but fear
  59      not: the conversion is trivial, and it eliminates loads of evil casts. A
  60      few STACKed things have been converted already. Feel free to convert more.
  61      In the fullness of time, I'll do away with the STACK type altogether.
  62      [Ben Laurie]
  63
  64   *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
  65      specified in <certfile> by updating the entry in the index.txt file.
  66      This way one no longer has to edit the index.txt file manually for
  67      revoking a certificate. The -revoke option does the gory details now.
  68      [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
  69
  70   *) Fix `openssl crl -noout -text' combination where `-noout' killed the
  71      `-text' option at all and this way the `-noout -text' combination was
  72      inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
  73      [Ralf S. Engelschall]
  74
  75   *) Make sure a corresponding plain text error message exists for the
  76      X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
  77      verify callback function determined that a certificate was revoked.
  78      [Ralf S. Engelschall]
  79
  80   *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
  81      ciphers that were excluded, e.g. by -DNO_IDEA.  Also, test
  82      all available cipers including rc5, which was forgotten until now.
  83      In order to let the testing shell script know which algorithms
  84      are available, a new (up to now undocumented) command
  85      "openssl list-cipher-commands" is used.
  86      [Bodo Moeller]
  87
  88   *) Bugfix: s_client occasionally would sleep in select() when
  89      it should have checked SSL_pending() first.
  90      [Bodo Moeller]
  91
  92   *) New functions DSA_do_sign and DSA_do_verify to provide access to
  93      the raw DSA values prior to ASN.1 encoding.
  94      [Ulf Möller]
  95
  96   *) Tweaks to Configure
  97      Niels Poppe <niels@netbox.org>
  98
  99   *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
 100      yet...
 101      [Steve Henson]
 102
 103   *) New variables $(RANLIB) and $(PERL) in the Makefiles.
 104      [Ulf Möller]
 105
 106   *) New config option to avoid instructions that are illegal on the 80386.
 107      The default code is faster, but requires at least a 486.
 108      [Ulf Möller]
 109
 110   *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
 111      SSL2_SERVER_VERSION (not used at all) macros, which are now the
 112      same as SSL2_VERSION anyway.
 113      [Bodo Moeller]
 114
 115   *) New "-showcerts" option for s_client.
 116      [Bodo Moeller]
 117
 118   *) Still more PKCS#12 integration. Add pkcs12 application to openssl
 119      application. Various cleanups and fixes.
 120      [Steve Henson]
 121
 122   *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
 123      modify error routines to work internally. Add error codes and PBE init
 124      to library startup routines.
 125      [Steve Henson]
 126
 127   *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
 128      packing functions to asn1 and evp. Changed function names and error
 129      codes along the way.
 130      [Steve Henson]
 131
 132   *) PKCS12 integration: and so it begins... First of several patches to
 133      slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
 134      objects to objects.h
 135      [Steve Henson]
 136
 137   *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
 138      and display support for Thawte strong extranet extension.
 139      [Steve Henson]
 140
 141   *) Add LinuxPPC support.
 142      [Jeff Dubrule <igor@pobox.org>]
 143
 144   *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
 145      bn_div_words in alpha.s.
 146      [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
 147
 148   *) Make sure the RSA OAEP test is skipped under -DRSAref because
 149      OAEP isn't supported when OpenSSL is built with RSAref.
 150      [Ulf Moeller <ulf@fitug.de>]
 151
 152   *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
 153      so they no longer are missing under -DNOPROTO.
 154      [Soren S. Jorvang <soren@t.dk>]
 155
 156  Changes between 0.9.1c and 0.9.2b
 157
 158   *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
 159      doesn't work when the session is reused. Coming soon!
 160      [Ben Laurie]
 161
 162   *) Fix a security hole, that allows sessions to be reused in the wrong
 163      context thus bypassing client cert protection! All software that uses
 164      client certs and session caches in multiple contexts NEEDS PATCHING to
 165      allow session reuse! A fuller solution is in the works.
 166      [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
 167
 168   *) Some more source tree cleanups (removed obsolete files
 169      crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
 170      permission on "config" script to be executable) and a fix for the INSTALL
 171      document.
 172      [Ulf Moeller <ulf@fitug.de>]
 173
 174   *) Remove some legacy and erroneous uses of malloc, free instead of
 175      Malloc, Free.
 176      [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
 177
 178   *) Make rsa_oaep_test return non-zero on error.
 179      [Ulf Moeller <ulf@fitug.de>]
 180
 181   *) Add support for native Solaris shared libraries. Configure
 182      solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
 183      if someone would make that last step automatic.
 184      [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
 185
 186   *) ctx_size was not built with the right compiler during "make links". Fixed.
 187      [Ben Laurie]
 188
 189   *) Change the meaning of 'ALL' in the cipher list. It now means "everything
 190      except NULL ciphers". This means the default cipher list will no longer
 191      enable NULL ciphers. They need to be specifically enabled e.g. with
 192      the string "DEFAULT:eNULL".
 193      [Steve Henson]
 194
 195   *) Fix to RSA private encryption routines: if p < q then it would
 196      occasionally produce an invalid result. This will only happen with
 197      externally generated keys because OpenSSL (and SSLeay) ensure p > q.
 198      [Steve Henson]
 199
 200   *) Be less restrictive and allow also `perl util/perlpath.pl
 201      /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
 202      because this way one can also use an interpreter named `perl5' (which is
 203      usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
 204      installed as `perl').
 205      [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
 206
 207   *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
 208      [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
 209
 210   *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
 211      advapi32.lib to Win32 build and change the pem test comparision
 212      to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
 213      suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
 214      and crypto/des/ede_cbcm_enc.c.
 215      [Steve Henson]
 216
 217   *) DES quad checksum was broken on big-endian architectures. Fixed.
 218      [Ben Laurie]
 219
 220   *) Comment out two functions in bio.h that aren't implemented. Fix up the
 221      Win32 test batch file so it (might) work again. The Win32 test batch file
 222      is horrible: I feel ill....
 223      [Steve Henson]
 224
 225   *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
 226      in e_os.h. Audit of header files to check ANSI and non ANSI
 227      sections: 10 functions were absent from non ANSI section and not exported
 228      from Windows DLLs. Fixed up libeay.num for new functions.
 229      [Steve Henson]
 230
 231   *) Make `openssl version' output lines consistent.
 232      [Ralf S. Engelschall]
 233
 234   *) Fix Win32 symbol export lists for BIO functions: Added
 235      BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
 236      to ms/libeay{16,32}.def.
 237      [Ralf S. Engelschall]
 238
 239   *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
 240      fine under Unix and passes some trivial tests I've now added. But the
 241      whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
 242      added to make sure no one expects that this stuff really works in the
 243      OpenSSL 0.9.2 release.  Additionally I've started to clean the XS sources
 244      up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
 245      openssl_bio.xs.
 246      [Ralf S. Engelschall]
 247
 248   *) Fix the generation of two part addresses in perl.
 249      [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
 250
 251   *) Add config entry for Linux on MIPS.
 252      [John Tobey <jtobey@channel1.com>]
 253
 254   *) Make links whenever Configure is run, unless we are on Windoze.
 255      [Ben Laurie]
 256
 257   *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
 258      Currently only issuerAltName and AuthorityKeyIdentifier make any sense
 259      in CRLs.
 260      [Steve Henson]
 261
 262   *) Add a useful kludge to allow package maintainers to specify compiler and
 263      other platforms details on the command line without having to patch the
 264      Configure script everytime: One now can use ``perl Configure
 265      <id>:<details>'', i.e. platform ids are allowed to have details appended
 266      to them (seperated by colons). This is treated as there would be a static
 267      pre-configured entry in Configure's %table under key <id> with value
 268      <details> and ``perl Configure <id>'' is called.  So, when you want to
 269      perform a quick test-compile under FreeBSD 3.1 with pgcc and without
 270      assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
 271      now, which overrides the FreeBSD-elf entry on-the-fly.
 272      [Ralf S. Engelschall]
 273
 274   *) Disable new TLS1 ciphersuites by default: they aren't official yet.
 275      [Ben Laurie]
 276
 277   *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
 278      on the `perl Configure ...' command line. This way one can compile
 279      OpenSSL libraries with Position Independent Code (PIC) which is needed
 280      for linking it into DSOs.
 281      [Ralf S. Engelschall]
 282
 283   *) Remarkably, export ciphers were totally broken and no-one had noticed!
 284      Fixed.
 285      [Ben Laurie]
 286
 287   *) Cleaned up the LICENSE document: The official contact for any license
 288      questions now is the OpenSSL core team under openssl-core@openssl.org.
 289      And add a paragraph about the dual-license situation to make sure people
 290      recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
 291      to the OpenSSL toolkit.
 292      [Ralf S. Engelschall]
 293
 294   *) General source tree makefile cleanups: Made `making xxx in yyy...'
 295      display consistent in the source tree and replaced `/bin/rm' by `rm'.
 296      Additonally cleaned up the `make links' target: Remove unnecessary
 297      semicolons, subsequent redundant removes, inline point.sh into mklink.sh
 298      to speed processing and no longer clutter the display with confusing
 299      stuff. Instead only the actually done links are displayed.
 300      [Ralf S. Engelschall]
 301
 302   *) Permit null encryption ciphersuites, used for authentication only. It used
 303      to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
 304      It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
 305      encryption.
 306      [Ben Laurie]
 307
 308   *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
 309      signed attributes when verifying signatures (this would break them),
 310      the detached data encoding was wrong and public keys obtained using
 311      X509_get_pubkey() weren't freed.
 312      [Steve Henson]
 313
 314   *) Add text documentation for the BUFFER functions. Also added a work around
 315      to a Win95 console bug. This was triggered by the password read stuff: the
 316      last character typed gets carried over to the next fread(). If you were
 317      generating a new cert request using 'req' for example then the last
 318      character of the passphrase would be CR which would then enter the first
 319      field as blank.
 320      [Steve Henson]
 321
 322   *) Added the new `Includes OpenSSL Cryptography Software' button as
 323      doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
 324      button and can be used by applications based on OpenSSL to show the
 325      relationship to the OpenSSL project.
 326      [Ralf S. Engelschall]
 327
 328   *) Remove confusing variables in function signatures in files
 329      ssl/ssl_lib.c and ssl/ssl.h.
 330      [Lennart Bong <lob@kulthea.stacken.kth.se>]
 331
 332   *) Don't install bss_file.c under PREFIX/include/
 333      [Lennart Bong <lob@kulthea.stacken.kth.se>]
 334
 335   *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
 336      functions that return function pointers and has support for NT specific
 337      stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
 338      #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
 339      unsigned to signed types: this was killing the Win32 compile.
 340      [Steve Henson]
 341
 342   *) Add new certificate file to stack functions,
 343      SSL_add_dir_cert_subjects_to_stack() and
 344      SSL_add_file_cert_subjects_to_stack().  These largely supplant
 345      SSL_load_client_CA_file(), and can be used to add multiple certs easily
 346      to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
 347      This means that Apache-SSL and similar packages don't have to mess around
 348      to add as many CAs as they want to the preferred list.
 349      [Ben Laurie]
 350
 351   *) Experiment with doxygen documentation. Currently only partially applied to
 352      ssl/ssl_lib.c.
 353      See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
 354      openssl.doxy as the configuration file.
 355      [Ben Laurie]
 356
 357   *) Get rid of remaining C++-style comments which strict C compilers hate.
 358      [Ralf S. Engelschall, pointed out by Carlos Amengual]
 359
 360   *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
 361      compiled in by default: it has problems with large keys.
 362      [Steve Henson]
 363
 364   *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
 365      DH private keys and/or callback functions which directly correspond to
 366      their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
 367      is needed for applications which have to configure certificates on a
 368      per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
 369      (e.g. s_server).
 370         For the RSA certificate situation is makes no difference, but
 371      for the DSA certificate situation this fixes the "no shared cipher"
 372      problem where the OpenSSL cipher selection procedure failed because the
 373      temporary keys were not overtaken from the context and the API provided
 374      no way to reconfigure them.
 375         The new functions now let applications reconfigure the stuff and they
 376      are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
 377      SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback.  Additionally a new
 378      non-public-API function ssl_cert_instantiate() is used as a helper
 379      function and also to reduce code redundancy inside ssl_rsa.c.
 380      [Ralf S. Engelschall]
 381
 382   *) Move s_server -dcert and -dkey options out of the undocumented feature
 383      area because they are useful for the DSA situation and should be
 384      recognized by the users.
 385      [Ralf S. Engelschall]
 386
 387   *) Fix the cipher decision scheme for export ciphers: the export bits are
 388      *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
 389      SSL_EXP_MASK.  So, the original variable has to be used instead of the
 390      already masked variable.
 391      [Richard Levitte <levitte@stacken.kth.se>]
 392
 393   *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
 394      [Richard Levitte <levitte@stacken.kth.se>]
 395
 396   *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
 397      from `int' to `unsigned int' because it's a length and initialized by
 398      EVP_DigestFinal() which expects an `unsigned int *'.
 399      [Richard Levitte <levitte@stacken.kth.se>]
 400
 401   *) Don't hard-code path to Perl interpreter on shebang line of Configure
 402      script. Instead use the usual Shell->Perl transition trick.
 403      [Ralf S. Engelschall]
 404
 405   *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
 406      (in addition to RSA certificates) to match the behaviour of `openssl dsa
 407      -noout -modulus' as it's already the case for `openssl rsa -noout
 408      -modulus'.  For RSA the -modulus is the real "modulus" while for DSA
 409      currently the public key is printed (a decision which was already done by
 410      `openssl dsa -modulus' in the past) which serves a similar purpose.
 411      Additionally the NO_RSA no longer completely removes the whole -modulus
 412      option; it now only avoids using the RSA stuff. Same applies to NO_DSA
 413      now, too.
 414      [Ralf S.  Engelschall]
 415
 416   *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
 417      BIO. See the source (crypto/evp/bio_ok.c) for more info.
 418      [Arne Ansper <arne@ats.cyber.ee>]
 419
 420   *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
 421      to be added. Now both 'req' and 'ca' can use new objects defined in the
 422      config file.
 423      [Steve Henson]
 424
 425   *) Add cool BIO that does syslog (or event log on NT).
 426      [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
 427
 428   *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
 429      TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
 430      TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
 431      Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
 432      [Ben Laurie]
 433
 434   *) Add preliminary config info for new extension code.
 435      [Steve Henson]
 436
 437   *) Make RSA_NO_PADDING really use no padding.
 438      [Ulf Moeller <ulf@fitug.de>]
 439
 440   *) Generate errors when private/public key check is done.
 441      [Ben Laurie]
 442
 443   *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
 444      for some CRL extensions and new objects added.
 445      [Steve Henson]
 446
 447   *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
 448      key usage extension and fuller support for authority key id.
 449      [Steve Henson]
 450
 451   *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
 452      padding method for RSA, which is recommended for new applications in PKCS
 453      #1 v2.0 (RFC 2437, October 1998).
 454      OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
 455      foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
 456      against Bleichbacher's attack on RSA.
 457      [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
 458       Ben Laurie]
 459
 460   *) Updates to the new SSL compression code
 461      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 462
 463   *) Fix so that the version number in the master secret, when passed
 464      via RSA, checks that if TLS was proposed, but we roll back to SSLv3
 465      (because the server will not accept higher), that the version number
 466      is 0x03,0x01, not 0x03,0x00
 467      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 468
 469   *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
 470      leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
 471      in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
 472      [Steve Henson]
 473
 474   *) Support for RAW extensions where an arbitrary extension can be
 475      created by including its DER encoding. See apps/openssl.cnf for
 476      an example.
 477      [Steve Henson]
 478
 479   *) Make sure latest Perl versions don't interpret some generated C array
 480      code as Perl array code in the crypto/err/err_genc.pl script.
 481      [Lars Weber <3weber@informatik.uni-hamburg.de>]
 482
 483   *) Modify ms/do_ms.bat to not generate assembly language makefiles since
 484      not many people have the assembler. Various Win32 compilation fixes and
 485      update to the INSTALL.W32 file with (hopefully) more accurate Win32
 486      build instructions.
 487      [Steve Henson]
 488
 489   *) Modify configure script 'Configure' to automatically create crypto/date.h
 490      file under Win32 and also build pem.h from pem.org. New script
 491      util/mkfiles.pl to create the MINFO file on environments that can't do a
 492      'make files': perl util/mkfiles.pl >MINFO should work.
 493      [Steve Henson]
 494
 495   *) Major rework of DES function declarations, in the pursuit of correctness
 496      and purity. As a result, many evil casts evaporated, and some weirdness,
 497      too. You may find this causes warnings in your code. Zapping your evil
 498      casts will probably fix them. Mostly.
 499      [Ben Laurie]
 500
 501   *) Fix for a typo in asn1.h. Bug fix to object creation script
 502      obj_dat.pl. It considered a zero in an object definition to mean
 503      "end of object": none of the objects in objects.h have any zeros
 504      so it wasn't spotted.
 505      [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
 506
 507   *) Add support for Triple DES Cipher Block Chaining with Output Feedback
 508      Masking (CBCM). In the absence of test vectors, the best I have been able
 509      to do is check that the decrypt undoes the encrypt, so far. Send me test
 510      vectors if you have them.
 511      [Ben Laurie]
 512
 513   *) Correct calculation of key length for export ciphers (too much space was
 514      allocated for null ciphers). This has not been tested!
 515      [Ben Laurie]
 516
 517   *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
 518      message is now correct (it understands "crypto" and "ssl" on its
 519      command line). There is also now an "update" option. This will update
 520      the util/ssleay.num and util/libeay.num files with any new functions.
 521      If you do a:
 522      perl util/mkdef.pl crypto ssl update
 523      it will update them.
 524      [Steve Henson]
 525
 526   *) Overhauled the Perl interface (perl/*):
 527      - ported BN stuff to OpenSSL's different BN library
 528      - made the perl/ source tree CVS-aware
 529      - renamed the package from SSLeay to OpenSSL (the files still contain
 530        their history because I've copied them in the repository)
 531      - removed obsolete files (the test scripts will be replaced
 532        by better Test::Harness variants in the future)
 533      [Ralf S. Engelschall]
 534
 535   *) First cut for a very conservative source tree cleanup:
 536      1. merge various obsolete readme texts into doc/ssleay.txt
 537      where we collect the old documents and readme texts.
 538      2. remove the first part of files where I'm already sure that we no
 539      longer need them because of three reasons: either they are just temporary
 540      files which were left by Eric or they are preserved original files where
 541      I've verified that the diff is also available in the CVS via "cvs diff
 542      -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
 543      the crypto/md/ stuff).
 544      [Ralf S. Engelschall]
 545
 546   *) More extension code. Incomplete support for subject and issuer alt
 547      name, issuer and authority key id. Change the i2v function parameters
 548      and add an extra 'crl' parameter in the X509V3_CTX structure: guess
 549      what that's for :-) Fix to ASN1 macro which messed up
 550      IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
 551      [Steve Henson]
 552
 553   *) Preliminary support for ENUMERATED type. This is largely copied from the
 554      INTEGER code.
 555      [Steve Henson]
 556
 557   *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
 558      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 559
 560   *) Make sure `make rehash' target really finds the `openssl' program.
 561      [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
 562
 563   *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
 564      like to hear about it if this slows down other processors.
 565      [Ben Laurie]
 566
 567   *) Add CygWin32 platform information to Configure script.
 568      [Alan Batie <batie@aahz.jf.intel.com>]
 569
 570   *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
 571      [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
 572
 573   *) New program nseq to manipulate netscape certificate sequences
 574      [Steve Henson]
 575
 576   *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
 577      few typos.
 578      [Steve Henson]
 579
 580   *) Fixes to BN code.  Previously the default was to define BN_RECURSION
 581      but the BN code had some problems that would cause failures when
 582      doing certificate verification and some other functions.
 583      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 584
 585   *) Add ASN1 and PEM code to support netscape certificate sequences.
 586      [Steve Henson]
 587
 588   *) Add ASN1 and PEM code to support netscape certificate sequences.
 589      [Steve Henson]
 590
 591   *) Add several PKIX and private extended key usage OIDs.
 592      [Steve Henson]
 593
 594   *) Modify the 'ca' program to handle the new extension code. Modify
 595      openssl.cnf for new extension format, add comments.
 596      [Steve Henson]
 597
 598   *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
 599      and add a sample to openssl.cnf so req -x509 now adds appropriate
 600      CA extensions.
 601      [Steve Henson]
 602
 603   *) Continued X509 V3 changes. Add to other makefiles, integrate with the
 604      error code, add initial support to X509_print() and x509 application.
 605      [Steve Henson]
 606
 607   *) Takes a deep breath and start addding X509 V3 extension support code. Add
 608      files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
 609      stuff is currently isolated and isn't even compiled yet.
 610      [Steve Henson]
 611
 612   *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
 613      ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
 614      Removed the versions check from X509 routines when loading extensions:
 615      this allows certain broken certificates that don't set the version
 616      properly to be processed.
 617      [Steve Henson]
 618
 619   *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
 620      Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
 621      can still be regenerated with "make depend".
 622      [Ben Laurie]
 623
 624   *) Spelling mistake in C version of CAST-128.
 625      [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
 626
 627   *) Changes to the error generation code. The perl script err-code.pl
 628      now reads in the old error codes and retains the old numbers, only
 629      adding new ones if necessary. It also only changes the .err files if new
 630      codes are added. The makefiles have been modified to only insert errors
 631      when needed (to avoid needlessly modifying header files). This is done
 632      by only inserting errors if the .err file is newer than the auto generated
 633      C file. To rebuild all the error codes from scratch (the old behaviour)
 634      either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
 635      or delete all the .err files.
 636      [Steve Henson]
 637
 638   *) CAST-128 was incorrectly implemented for short keys. The C version has
 639      been fixed, but is untested. The assembler versions are also fixed, but
 640      new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
 641      to regenerate it if needed.
 642      [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
 643       Hagino <itojun@kame.net>]
 644
 645   *) File was opened incorrectly in randfile.c.
 646      [Ulf Möller <ulf@fitug.de>]
 647
 648   *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
 649      functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
 650      GeneralizedTime. ASN1_TIME is the proper type used in certificates et
 651      al: it's just almost always a UTCTime. Note this patch adds new error
 652      codes so do a "make errors" if there are problems.
 653      [Steve Henson]
 654
 655   *) Correct Linux 1 recognition in config.
 656      [Ulf Möller <ulf@fitug.de>]
 657
 658   *) Remove pointless MD5 hash when using DSA keys in ca.
 659      [Anonymous <nobody@replay.com>]
 660
 661   *) Generate an error if given an empty string as a cert directory. Also
 662      generate an error if handed NULL (previously returned 0 to indicate an
 663      error, but didn't set one).
 664      [Ben Laurie, reported by Anonymous <nobody@replay.com>]
 665
 666   *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
 667      [Ben Laurie]
 668
 669   *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
 670      parameters. This was causing a warning which killed off the Win32 compile.
 671      [Steve Henson]
 672
 673   *) Remove C++ style comments from crypto/bn/bn_local.h.
 674      [Neil Costigan <neil.costigan@celocom.com>]
 675
 676   *) The function OBJ_txt2nid was broken. It was supposed to return a nid
 677      based on a text string, looking up short and long names and finally
 678      "dot" format. The "dot" format stuff didn't work. Added new function
 679      OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
 680      OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
 681      OID is not part of the table.
 682      [Steve Henson]
 683
 684   *) Add prototypes to X509 lookup/verify methods, fixing a bug in
 685      X509_LOOKUP_by_alias().
 686      [Ben Laurie]
 687
 688   *) Sort openssl functions by name.
 689      [Ben Laurie]
 690
 691   *) Get the gendsa program working (hopefully) and add it to app list. Remove
 692      encryption from sample DSA keys (in case anyone is interested the password
 693      was "1234").
 694      [Steve Henson]
 695
 696   *) Make _all_ *_free functions accept a NULL pointer.
 697      [Frans Heymans <fheymans@isaserver.be>]
 698
 699   *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
 700      NULL pointers.
 701      [Anonymous <nobody@replay.com>]
 702
 703   *) s_server should send the CAfile as acceptable CAs, not its own cert.
 704      [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
 705
 706   *) Don't blow it for numeric -newkey arguments to apps/req.
 707      [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
 708
 709   *) Temp key "for export" tests were wrong in s3_srvr.c.
 710      [Anonymous <nobody@replay.com>]
 711
 712   *) Add prototype for temp key callback functions
 713      SSL_CTX_set_tmp_{rsa,dh}_callback().
 714      [Ben Laurie]
 715
 716   *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
 717      DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
 718      [Steve Henson]
 719
 720   *) X509_name_add_entry() freed the wrong thing after an error.
 721      [Arne Ansper <arne@ats.cyber.ee>]
 722
 723   *) rsa_eay.c would attempt to free a NULL context.
 724      [Arne Ansper <arne@ats.cyber.ee>]
 725
 726   *) BIO_s_socket() had a broken should_retry() on Windoze.
 727      [Arne Ansper <arne@ats.cyber.ee>]
 728
 729   *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
 730      [Arne Ansper <arne@ats.cyber.ee>]
 731
 732   *) Make sure the already existing X509_STORE->depth variable is initialized
 733      in X509_STORE_new(), but document the fact that this variable is still
 734      unused in the certificate verification process.
 735      [Ralf S. Engelschall]
 736
 737   *) Fix the various library and apps files to free up pkeys obtained from
 738      X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
 739      [Steve Henson]
 740
 741   *) Fix reference counting in X509_PUBKEY_get(). This makes
 742      demos/maurice/example2.c work, amongst others, probably.
 743      [Steve Henson and Ben Laurie]
 744
 745   *) First cut of a cleanup for apps/. First the `ssleay' program is now named
 746      `openssl' and second, the shortcut symlinks for the `openssl <command>'
 747      are no longer created. This way we have a single and consistent command
 748      line interface `openssl <command>', similar to `cvs <command>'.
 749      [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
 750
 751   *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
 752      BIT STRING wrapper always have zero unused bits.
 753      [Steve Henson]
 754
 755   *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
 756      [Steve Henson]
 757
 758   *) Make the top-level INSTALL documentation easier to understand.
 759      [Paul Sutton]
 760
 761   *) Makefiles updated to exit if an error occurs in a sub-directory
 762      make (including if user presses ^C) [Paul Sutton]
 763
 764   *) Make Montgomery context stuff explicit in RSA data structure.
 765      [Ben Laurie]
 766
 767   *) Fix build order of pem and err to allow for generated pem.h.
 768      [Ben Laurie]
 769
 770   *) Fix renumbering bug in X509_NAME_delete_entry().
 771      [Ben Laurie]
 772
 773   *) Enhanced the err-ins.pl script so it makes the error library number
 774      global and can add a library name. This is needed for external ASN1 and
 775      other error libraries.
 776      [Steve Henson]
 777
 778   *) Fixed sk_insert which never worked properly.
 779      [Steve Henson]
 780
 781   *) Fix ASN1 macros so they can handle indefinite length construted
 782      EXPLICIT tags. Some non standard certificates use these: they can now
 783      be read in.
 784      [Steve Henson]
 785
 786   *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
 787      into a single doc/ssleay.txt bundle. This way the information is still
 788      preserved but no longer messes up this directory. Now it's new room for
 789      the new set of documenation files.
 790      [Ralf S. Engelschall]
 791
 792   *) SETs were incorrectly DER encoded. This was a major pain, because they
 793      shared code with SEQUENCEs, which aren't coded the same. This means that
 794      almost everything to do with SETs or SEQUENCEs has either changed name or
 795      number of arguments.
 796      [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
 797
 798   *) Fix test data to work with the above.
 799      [Ben Laurie]
 800
 801   *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
 802      was already fixed by Eric for 0.9.1 it seems.
 803      [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
 804
 805   *) Autodetect FreeBSD3.
 806      [Ben Laurie]
 807
 808   *) Fix various bugs in Configure. This affects the following platforms:
 809      nextstep
 810      ncr-scde
 811      unixware-2.0
 812      unixware-2.0-pentium
 813      sco5-cc.
 814      [Ben Laurie]
 815
 816   *) Eliminate generated files from CVS. Reorder tests to regenerate files
 817      before they are needed.
 818      [Ben Laurie]
 819
 820   *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
 821      [Ben Laurie]
 822
 823  Changes between 0.9.1b and 0.9.1c
 824
 825   *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
 826      changed SSLeay to OpenSSL in version strings.
 827      [Ralf S. Engelschall]
 828
 829   *) Some fixups to the top-level documents.
 830      [Paul Sutton]
 831
 832   *) Fixed the nasty bug where rsaref.h was not found under compile-time
 833      because the symlink to include/ was missing.
 834      [Ralf S. Engelschall]
 835
 836   *) Incorporated the popular no-RSA/DSA-only patches
 837      which allow to compile a RSA-free SSLeay.
 838      [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
 839
 840   *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
 841      when "ssleay" is still not found.
 842      [Ralf S. Engelschall]
 843
 844   *) Added more platforms to Configure: Cray T3E, HPUX 11,
 845      [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
 846
 847   *) Updated the README file.
 848      [Ralf S. Engelschall]
 849
 850   *) Added various .cvsignore files in the CVS repository subdirs
 851      to make a "cvs update" really silent.
 852      [Ralf S. Engelschall]
 853
 854   *) Recompiled the error-definition header files and added
 855      missing symbols to the Win32 linker tables.
 856      [Ralf S. Engelschall]
 857
 858   *) Cleaned up the top-level documents;
 859      o new files: CHANGES and LICENSE
 860      o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
 861      o merged COPYRIGHT into LICENSE
 862      o removed obsolete TODO file
 863      o renamed MICROSOFT to INSTALL.W32
 864      [Ralf S. Engelschall]
 865
 866   *) Removed dummy files from the 0.9.1b source tree:
 867      crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
 868      crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
 869      crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
 870      crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
 871      util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
 872      [Ralf S. Engelschall]
 873
 874   *) Added various platform portability fixes.
 875      [Mark J. Cox]
 876
 877   *) The Genesis of the OpenSSL rpject:
 878      We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
 879      Young and Tim J. Hudson created while they were working for C2Net until
 880      summer 1998.
 881      [The OpenSSL Project]
 882
 883  Changes between 0.9.0b and 0.9.1b
 884
 885   *) Updated a few CA certificates under certs/
 886      [Eric A. Young]
 887
 888   *) Changed some BIGNUM api stuff.
 889      [Eric A. Young]
 890
 891   *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
 892      DGUX x86, Linux Alpha, etc.
 893      [Eric A. Young]
 894
 895   *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
 896      RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
 897      available).
 898      [Eric A. Young]
 899
 900   *) Add -strparse option to asn1pars program which parses nested
 901      binary structures
 902      [Dr Stephen Henson <shenson@bigfoot.com>]
 903
 904   *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
 905      [Eric A. Young]
 906
 907   *) DSA fix for "ca" program.
 908      [Eric A. Young]
 909
 910   *) Added "-genkey" option to "dsaparam" program.
 911      [Eric A. Young]
 912
 913   *) Added RIPE MD160 (rmd160) message digest.
 914      [Eric A. Young]
 915
 916   *) Added -a (all) option to "ssleay version" command.
 917      [Eric A. Young]
 918
 919   *) Added PLATFORM define which is the id given to Configure.
 920      [Eric A. Young]
 921
 922   *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
 923      [Eric A. Young]
 924
 925   *) Extended the ASN.1 parser routines.
 926      [Eric A. Young]
 927
 928   *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
 929      [Eric A. Young]
 930
 931   *) Added a BN_CTX to the BN library.
 932      [Eric A. Young]
 933
 934   *) Fixed the weak key values in DES library
 935      [Eric A. Young]
 936
 937   *) Changed API in EVP library for cipher aliases.
 938      [Eric A. Young]
 939
 940   *) Added support for RC2/64bit cipher.
 941      [Eric A. Young]
 942
 943   *) Converted the lhash library to the crypto/mem.c functions.
 944      [Eric A. Young]
 945
 946   *) Added more recognized ASN.1 object ids.
 947      [Eric A. Young]
 948
 949   *) Added more RSA padding checks for SSL/TLS.
 950      [Eric A. Young]
 951
 952   *) Added BIO proxy/filter functionality.
 953      [Eric A. Young]
 954
 955   *) Added extra_certs to SSL_CTX which can be used
 956      send extra CA certificates to the client in the CA cert chain sending
 957      process. It can be configured with SSL_CTX_add_extra_chain_cert().
 958      [Eric A. Young]
 959
 960   *) Now Fortezza is denied in the authentication phase because
 961      this is key exchange mechanism is not supported by SSLeay at all.
 962      [Eric A. Young]
 963
 964   *) Additional PKCS1 checks.
 965      [Eric A. Young]
 966
 967   *) Support the string "TLSv1" for all TLS v1 ciphers.
 968      [Eric A. Young]
 969
 970   *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
 971      ex_data index of the SSL context in the X509_STORE_CTX ex_data.
 972      [Eric A. Young]
 973
 974   *) Fixed a few memory leaks.
 975      [Eric A. Young]
 976
 977   *) Fixed various code and comment typos.
 978      [Eric A. Young]
 979
 980   *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
 981      bytes sent in the client random.
 982      [Edward Bishop <ebishop@spyglass.com>]
 983