CHANGES

   1
   2  OpenSSL CHANGES
   3  _______________
   4
   5
   6  Changes between 0.9.2b and 0.9.3
   7
   8   *) Change functions to ANSI C.
   9      [Ulf Möller]
  10
  11   *) Fix typos in error codes.
  12      [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
  13
  14   *) Remove defunct assembler files from Configure.
  15      [Ulf Möller]
  16
  17   *) SPARC v8 assembler BIGNUM implementation.
  18      [Andy Polyakov <appro@fy.chalmers.se>]
  19
  20   *) Support for Certificate Policies extension: both print and set.
  21      Various additions to support the r2i method this extension will use.
  22      [Steve Henson]
  23
  24   *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
  25      return a const string when you are expecting an allocated buffer.
  26      [Ben Laurie]
  27
  28   *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
  29      types DirectoryString and DisplayText.
  30      [Steve Henson]
  31
  32   *) Add code to allow r2i extensions to access the configuration database,
  33      add an LHASH database driver and add several ctx helper functions.
  34      [Steve Henson]
  35
  36   *) Fix an evil bug in bn_expand2() which caused various BN functions to
  37      fail when they extended the size of a BIGNUM.
  38      [Steve Henson]
  39
  40   *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
  41      support typesafe stack.
  42      [Steve Henson]
  43
  44   *) Fix typo in SSL_[gs]et_options().
  45      [Nils Frostberg <nils@medcom.se>]
  46
  47   *) Delete various functions and files that belonged to the (now obsolete)
  48      old X509V3 handling code.
  49      [Steve Henson]
  50
  51   *) New Configure option "rsaref".
  52      [Ulf Möller]
  53
  54   *) Don't auto-generate pem.h.
  55      [Bodo Moeller]
  56
  57   *) Introduce type-safe ASN.1 SETs.
  58      [Ben Laurie]
  59
  60   *) Introduce type-safe STACKs. This will almost certainly break lots of code
  61      that links with OpenSSL (well at least cause lots of warnings), but fear
  62      not: the conversion is trivial, and it eliminates loads of evil casts. A
  63      few STACKed things have been converted already. Feel free to convert more.
  64      In the fullness of time, I'll do away with the STACK type altogether.
  65      [Ben Laurie]
  66
  67   *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
  68      specified in <certfile> by updating the entry in the index.txt file.
  69      This way one no longer has to edit the index.txt file manually for
  70      revoking a certificate. The -revoke option does the gory details now.
  71      [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
  72
  73   *) Fix `openssl crl -noout -text' combination where `-noout' killed the
  74      `-text' option at all and this way the `-noout -text' combination was
  75      inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
  76      [Ralf S. Engelschall]
  77
  78   *) Make sure a corresponding plain text error message exists for the
  79      X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
  80      verify callback function determined that a certificate was revoked.
  81      [Ralf S. Engelschall]
  82
  83   *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
  84      ciphers that were excluded, e.g. by -DNO_IDEA.  Also, test
  85      all available cipers including rc5, which was forgotten until now.
  86      In order to let the testing shell script know which algorithms
  87      are available, a new (up to now undocumented) command
  88      "openssl list-cipher-commands" is used.
  89      [Bodo Moeller]
  90
  91   *) Bugfix: s_client occasionally would sleep in select() when
  92      it should have checked SSL_pending() first.
  93      [Bodo Moeller]
  94
  95   *) New functions DSA_do_sign and DSA_do_verify to provide access to
  96      the raw DSA values prior to ASN.1 encoding.
  97      [Ulf Möller]
  98
  99   *) Tweaks to Configure
 100      Niels Poppe <niels@netbox.org>
 101
 102   *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
 103      yet...
 104      [Steve Henson]
 105
 106   *) New variables $(RANLIB) and $(PERL) in the Makefiles.
 107      [Ulf Möller]
 108
 109   *) New config option to avoid instructions that are illegal on the 80386.
 110      The default code is faster, but requires at least a 486.
 111      [Ulf Möller]
 112
 113   *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
 114      SSL2_SERVER_VERSION (not used at all) macros, which are now the
 115      same as SSL2_VERSION anyway.
 116      [Bodo Moeller]
 117
 118   *) New "-showcerts" option for s_client.
 119      [Bodo Moeller]
 120
 121   *) Still more PKCS#12 integration. Add pkcs12 application to openssl
 122      application. Various cleanups and fixes.
 123      [Steve Henson]
 124
 125   *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
 126      modify error routines to work internally. Add error codes and PBE init
 127      to library startup routines.
 128      [Steve Henson]
 129
 130   *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
 131      packing functions to asn1 and evp. Changed function names and error
 132      codes along the way.
 133      [Steve Henson]
 134
 135   *) PKCS12 integration: and so it begins... First of several patches to
 136      slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
 137      objects to objects.h
 138      [Steve Henson]
 139
 140   *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
 141      and display support for Thawte strong extranet extension.
 142      [Steve Henson]
 143
 144   *) Add LinuxPPC support.
 145      [Jeff Dubrule <igor@pobox.org>]
 146
 147   *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
 148      bn_div_words in alpha.s.
 149      [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
 150
 151   *) Make sure the RSA OAEP test is skipped under -DRSAref because
 152      OAEP isn't supported when OpenSSL is built with RSAref.
 153      [Ulf Moeller <ulf@fitug.de>]
 154
 155   *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
 156      so they no longer are missing under -DNOPROTO.
 157      [Soren S. Jorvang <soren@t.dk>]
 158
 159  Changes between 0.9.1c and 0.9.2b
 160
 161   *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
 162      doesn't work when the session is reused. Coming soon!
 163      [Ben Laurie]
 164
 165   *) Fix a security hole, that allows sessions to be reused in the wrong
 166      context thus bypassing client cert protection! All software that uses
 167      client certs and session caches in multiple contexts NEEDS PATCHING to
 168      allow session reuse! A fuller solution is in the works.
 169      [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
 170
 171   *) Some more source tree cleanups (removed obsolete files
 172      crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
 173      permission on "config" script to be executable) and a fix for the INSTALL
 174      document.
 175      [Ulf Moeller <ulf@fitug.de>]
 176
 177   *) Remove some legacy and erroneous uses of malloc, free instead of
 178      Malloc, Free.
 179      [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
 180
 181   *) Make rsa_oaep_test return non-zero on error.
 182      [Ulf Moeller <ulf@fitug.de>]
 183
 184   *) Add support for native Solaris shared libraries. Configure
 185      solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
 186      if someone would make that last step automatic.
 187      [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
 188
 189   *) ctx_size was not built with the right compiler during "make links". Fixed.
 190      [Ben Laurie]
 191
 192   *) Change the meaning of 'ALL' in the cipher list. It now means "everything
 193      except NULL ciphers". This means the default cipher list will no longer
 194      enable NULL ciphers. They need to be specifically enabled e.g. with
 195      the string "DEFAULT:eNULL".
 196      [Steve Henson]
 197
 198   *) Fix to RSA private encryption routines: if p < q then it would
 199      occasionally produce an invalid result. This will only happen with
 200      externally generated keys because OpenSSL (and SSLeay) ensure p > q.
 201      [Steve Henson]
 202
 203   *) Be less restrictive and allow also `perl util/perlpath.pl
 204      /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
 205      because this way one can also use an interpreter named `perl5' (which is
 206      usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
 207      installed as `perl').
 208      [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
 209
 210   *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
 211      [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
 212
 213   *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
 214      advapi32.lib to Win32 build and change the pem test comparision
 215      to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
 216      suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
 217      and crypto/des/ede_cbcm_enc.c.
 218      [Steve Henson]
 219
 220   *) DES quad checksum was broken on big-endian architectures. Fixed.
 221      [Ben Laurie]
 222
 223   *) Comment out two functions in bio.h that aren't implemented. Fix up the
 224      Win32 test batch file so it (might) work again. The Win32 test batch file
 225      is horrible: I feel ill....
 226      [Steve Henson]
 227
 228   *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
 229      in e_os.h. Audit of header files to check ANSI and non ANSI
 230      sections: 10 functions were absent from non ANSI section and not exported
 231      from Windows DLLs. Fixed up libeay.num for new functions.
 232      [Steve Henson]
 233
 234   *) Make `openssl version' output lines consistent.
 235      [Ralf S. Engelschall]
 236
 237   *) Fix Win32 symbol export lists for BIO functions: Added
 238      BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
 239      to ms/libeay{16,32}.def.
 240      [Ralf S. Engelschall]
 241
 242   *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
 243      fine under Unix and passes some trivial tests I've now added. But the
 244      whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
 245      added to make sure no one expects that this stuff really works in the
 246      OpenSSL 0.9.2 release.  Additionally I've started to clean the XS sources
 247      up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
 248      openssl_bio.xs.
 249      [Ralf S. Engelschall]
 250
 251   *) Fix the generation of two part addresses in perl.
 252      [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
 253
 254   *) Add config entry for Linux on MIPS.
 255      [John Tobey <jtobey@channel1.com>]
 256
 257   *) Make links whenever Configure is run, unless we are on Windoze.
 258      [Ben Laurie]
 259
 260   *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
 261      Currently only issuerAltName and AuthorityKeyIdentifier make any sense
 262      in CRLs.
 263      [Steve Henson]
 264
 265   *) Add a useful kludge to allow package maintainers to specify compiler and
 266      other platforms details on the command line without having to patch the
 267      Configure script everytime: One now can use ``perl Configure
 268      <id>:<details>'', i.e. platform ids are allowed to have details appended
 269      to them (seperated by colons). This is treated as there would be a static
 270      pre-configured entry in Configure's %table under key <id> with value
 271      <details> and ``perl Configure <id>'' is called.  So, when you want to
 272      perform a quick test-compile under FreeBSD 3.1 with pgcc and without
 273      assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
 274      now, which overrides the FreeBSD-elf entry on-the-fly.
 275      [Ralf S. Engelschall]
 276
 277   *) Disable new TLS1 ciphersuites by default: they aren't official yet.
 278      [Ben Laurie]
 279
 280   *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
 281      on the `perl Configure ...' command line. This way one can compile
 282      OpenSSL libraries with Position Independent Code (PIC) which is needed
 283      for linking it into DSOs.
 284      [Ralf S. Engelschall]
 285
 286   *) Remarkably, export ciphers were totally broken and no-one had noticed!
 287      Fixed.
 288      [Ben Laurie]
 289
 290   *) Cleaned up the LICENSE document: The official contact for any license
 291      questions now is the OpenSSL core team under openssl-core@openssl.org.
 292      And add a paragraph about the dual-license situation to make sure people
 293      recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
 294      to the OpenSSL toolkit.
 295      [Ralf S. Engelschall]
 296
 297   *) General source tree makefile cleanups: Made `making xxx in yyy...'
 298      display consistent in the source tree and replaced `/bin/rm' by `rm'.
 299      Additonally cleaned up the `make links' target: Remove unnecessary
 300      semicolons, subsequent redundant removes, inline point.sh into mklink.sh
 301      to speed processing and no longer clutter the display with confusing
 302      stuff. Instead only the actually done links are displayed.
 303      [Ralf S. Engelschall]
 304
 305   *) Permit null encryption ciphersuites, used for authentication only. It used
 306      to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
 307      It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
 308      encryption.
 309      [Ben Laurie]
 310
 311   *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
 312      signed attributes when verifying signatures (this would break them),
 313      the detached data encoding was wrong and public keys obtained using
 314      X509_get_pubkey() weren't freed.
 315      [Steve Henson]
 316
 317   *) Add text documentation for the BUFFER functions. Also added a work around
 318      to a Win95 console bug. This was triggered by the password read stuff: the
 319      last character typed gets carried over to the next fread(). If you were
 320      generating a new cert request using 'req' for example then the last
 321      character of the passphrase would be CR which would then enter the first
 322      field as blank.
 323      [Steve Henson]
 324
 325   *) Added the new `Includes OpenSSL Cryptography Software' button as
 326      doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
 327      button and can be used by applications based on OpenSSL to show the
 328      relationship to the OpenSSL project.
 329      [Ralf S. Engelschall]
 330
 331   *) Remove confusing variables in function signatures in files
 332      ssl/ssl_lib.c and ssl/ssl.h.
 333      [Lennart Bong <lob@kulthea.stacken.kth.se>]
 334
 335   *) Don't install bss_file.c under PREFIX/include/
 336      [Lennart Bong <lob@kulthea.stacken.kth.se>]
 337
 338   *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
 339      functions that return function pointers and has support for NT specific
 340      stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
 341      #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
 342      unsigned to signed types: this was killing the Win32 compile.
 343      [Steve Henson]
 344
 345   *) Add new certificate file to stack functions,
 346      SSL_add_dir_cert_subjects_to_stack() and
 347      SSL_add_file_cert_subjects_to_stack().  These largely supplant
 348      SSL_load_client_CA_file(), and can be used to add multiple certs easily
 349      to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
 350      This means that Apache-SSL and similar packages don't have to mess around
 351      to add as many CAs as they want to the preferred list.
 352      [Ben Laurie]
 353
 354   *) Experiment with doxygen documentation. Currently only partially applied to
 355      ssl/ssl_lib.c.
 356      See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
 357      openssl.doxy as the configuration file.
 358      [Ben Laurie]
 359
 360   *) Get rid of remaining C++-style comments which strict C compilers hate.
 361      [Ralf S. Engelschall, pointed out by Carlos Amengual]
 362
 363   *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
 364      compiled in by default: it has problems with large keys.
 365      [Steve Henson]
 366
 367   *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
 368      DH private keys and/or callback functions which directly correspond to
 369      their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
 370      is needed for applications which have to configure certificates on a
 371      per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
 372      (e.g. s_server).
 373         For the RSA certificate situation is makes no difference, but
 374      for the DSA certificate situation this fixes the "no shared cipher"
 375      problem where the OpenSSL cipher selection procedure failed because the
 376      temporary keys were not overtaken from the context and the API provided
 377      no way to reconfigure them.
 378         The new functions now let applications reconfigure the stuff and they
 379      are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
 380      SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback.  Additionally a new
 381      non-public-API function ssl_cert_instantiate() is used as a helper
 382      function and also to reduce code redundancy inside ssl_rsa.c.
 383      [Ralf S. Engelschall]
 384
 385   *) Move s_server -dcert and -dkey options out of the undocumented feature
 386      area because they are useful for the DSA situation and should be
 387      recognized by the users.
 388      [Ralf S. Engelschall]
 389
 390   *) Fix the cipher decision scheme for export ciphers: the export bits are
 391      *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
 392      SSL_EXP_MASK.  So, the original variable has to be used instead of the
 393      already masked variable.
 394      [Richard Levitte <levitte@stacken.kth.se>]
 395
 396   *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
 397      [Richard Levitte <levitte@stacken.kth.se>]
 398
 399   *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
 400      from `int' to `unsigned int' because it's a length and initialized by
 401      EVP_DigestFinal() which expects an `unsigned int *'.
 402      [Richard Levitte <levitte@stacken.kth.se>]
 403
 404   *) Don't hard-code path to Perl interpreter on shebang line of Configure
 405      script. Instead use the usual Shell->Perl transition trick.
 406      [Ralf S. Engelschall]
 407
 408   *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
 409      (in addition to RSA certificates) to match the behaviour of `openssl dsa
 410      -noout -modulus' as it's already the case for `openssl rsa -noout
 411      -modulus'.  For RSA the -modulus is the real "modulus" while for DSA
 412      currently the public key is printed (a decision which was already done by
 413      `openssl dsa -modulus' in the past) which serves a similar purpose.
 414      Additionally the NO_RSA no longer completely removes the whole -modulus
 415      option; it now only avoids using the RSA stuff. Same applies to NO_DSA
 416      now, too.
 417      [Ralf S.  Engelschall]
 418
 419   *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
 420      BIO. See the source (crypto/evp/bio_ok.c) for more info.
 421      [Arne Ansper <arne@ats.cyber.ee>]
 422
 423   *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
 424      to be added. Now both 'req' and 'ca' can use new objects defined in the
 425      config file.
 426      [Steve Henson]
 427
 428   *) Add cool BIO that does syslog (or event log on NT).
 429      [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
 430
 431   *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
 432      TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
 433      TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
 434      Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
 435      [Ben Laurie]
 436
 437   *) Add preliminary config info for new extension code.
 438      [Steve Henson]
 439
 440   *) Make RSA_NO_PADDING really use no padding.
 441      [Ulf Moeller <ulf@fitug.de>]
 442
 443   *) Generate errors when private/public key check is done.
 444      [Ben Laurie]
 445
 446   *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
 447      for some CRL extensions and new objects added.
 448      [Steve Henson]
 449
 450   *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
 451      key usage extension and fuller support for authority key id.
 452      [Steve Henson]
 453
 454   *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
 455      padding method for RSA, which is recommended for new applications in PKCS
 456      #1 v2.0 (RFC 2437, October 1998).
 457      OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
 458      foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
 459      against Bleichbacher's attack on RSA.
 460      [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
 461       Ben Laurie]
 462
 463   *) Updates to the new SSL compression code
 464      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 465
 466   *) Fix so that the version number in the master secret, when passed
 467      via RSA, checks that if TLS was proposed, but we roll back to SSLv3
 468      (because the server will not accept higher), that the version number
 469      is 0x03,0x01, not 0x03,0x00
 470      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 471
 472   *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
 473      leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
 474      in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
 475      [Steve Henson]
 476
 477   *) Support for RAW extensions where an arbitrary extension can be
 478      created by including its DER encoding. See apps/openssl.cnf for
 479      an example.
 480      [Steve Henson]
 481
 482   *) Make sure latest Perl versions don't interpret some generated C array
 483      code as Perl array code in the crypto/err/err_genc.pl script.
 484      [Lars Weber <3weber@informatik.uni-hamburg.de>]
 485
 486   *) Modify ms/do_ms.bat to not generate assembly language makefiles since
 487      not many people have the assembler. Various Win32 compilation fixes and
 488      update to the INSTALL.W32 file with (hopefully) more accurate Win32
 489      build instructions.
 490      [Steve Henson]
 491
 492   *) Modify configure script 'Configure' to automatically create crypto/date.h
 493      file under Win32 and also build pem.h from pem.org. New script
 494      util/mkfiles.pl to create the MINFO file on environments that can't do a
 495      'make files': perl util/mkfiles.pl >MINFO should work.
 496      [Steve Henson]
 497
 498   *) Major rework of DES function declarations, in the pursuit of correctness
 499      and purity. As a result, many evil casts evaporated, and some weirdness,
 500      too. You may find this causes warnings in your code. Zapping your evil
 501      casts will probably fix them. Mostly.
 502      [Ben Laurie]
 503
 504   *) Fix for a typo in asn1.h. Bug fix to object creation script
 505      obj_dat.pl. It considered a zero in an object definition to mean
 506      "end of object": none of the objects in objects.h have any zeros
 507      so it wasn't spotted.
 508      [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
 509
 510   *) Add support for Triple DES Cipher Block Chaining with Output Feedback
 511      Masking (CBCM). In the absence of test vectors, the best I have been able
 512      to do is check that the decrypt undoes the encrypt, so far. Send me test
 513      vectors if you have them.
 514      [Ben Laurie]
 515
 516   *) Correct calculation of key length for export ciphers (too much space was
 517      allocated for null ciphers). This has not been tested!
 518      [Ben Laurie]
 519
 520   *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
 521      message is now correct (it understands "crypto" and "ssl" on its
 522      command line). There is also now an "update" option. This will update
 523      the util/ssleay.num and util/libeay.num files with any new functions.
 524      If you do a:
 525      perl util/mkdef.pl crypto ssl update
 526      it will update them.
 527      [Steve Henson]
 528
 529   *) Overhauled the Perl interface (perl/*):
 530      - ported BN stuff to OpenSSL's different BN library
 531      - made the perl/ source tree CVS-aware
 532      - renamed the package from SSLeay to OpenSSL (the files still contain
 533        their history because I've copied them in the repository)
 534      - removed obsolete files (the test scripts will be replaced
 535        by better Test::Harness variants in the future)
 536      [Ralf S. Engelschall]
 537
 538   *) First cut for a very conservative source tree cleanup:
 539      1. merge various obsolete readme texts into doc/ssleay.txt
 540      where we collect the old documents and readme texts.
 541      2. remove the first part of files where I'm already sure that we no
 542      longer need them because of three reasons: either they are just temporary
 543      files which were left by Eric or they are preserved original files where
 544      I've verified that the diff is also available in the CVS via "cvs diff
 545      -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
 546      the crypto/md/ stuff).
 547      [Ralf S. Engelschall]
 548
 549   *) More extension code. Incomplete support for subject and issuer alt
 550      name, issuer and authority key id. Change the i2v function parameters
 551      and add an extra 'crl' parameter in the X509V3_CTX structure: guess
 552      what that's for :-) Fix to ASN1 macro which messed up
 553      IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
 554      [Steve Henson]
 555
 556   *) Preliminary support for ENUMERATED type. This is largely copied from the
 557      INTEGER code.
 558      [Steve Henson]
 559
 560   *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
 561      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 562
 563   *) Make sure `make rehash' target really finds the `openssl' program.
 564      [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
 565
 566   *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
 567      like to hear about it if this slows down other processors.
 568      [Ben Laurie]
 569
 570   *) Add CygWin32 platform information to Configure script.
 571      [Alan Batie <batie@aahz.jf.intel.com>]
 572
 573   *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
 574      [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
 575
 576   *) New program nseq to manipulate netscape certificate sequences
 577      [Steve Henson]
 578
 579   *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
 580      few typos.
 581      [Steve Henson]
 582
 583   *) Fixes to BN code.  Previously the default was to define BN_RECURSION
 584      but the BN code had some problems that would cause failures when
 585      doing certificate verification and some other functions.
 586      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
 587
 588   *) Add ASN1 and PEM code to support netscape certificate sequences.
 589      [Steve Henson]
 590
 591   *) Add ASN1 and PEM code to support netscape certificate sequences.
 592      [Steve Henson]
 593
 594   *) Add several PKIX and private extended key usage OIDs.
 595      [Steve Henson]
 596
 597   *) Modify the 'ca' program to handle the new extension code. Modify
 598      openssl.cnf for new extension format, add comments.
 599      [Steve Henson]
 600
 601   *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
 602      and add a sample to openssl.cnf so req -x509 now adds appropriate
 603      CA extensions.
 604      [Steve Henson]
 605
 606   *) Continued X509 V3 changes. Add to other makefiles, integrate with the
 607      error code, add initial support to X509_print() and x509 application.
 608      [Steve Henson]
 609
 610   *) Takes a deep breath and start addding X509 V3 extension support code. Add
 611      files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
 612      stuff is currently isolated and isn't even compiled yet.
 613      [Steve Henson]
 614
 615   *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
 616      ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
 617      Removed the versions check from X509 routines when loading extensions:
 618      this allows certain broken certificates that don't set the version
 619      properly to be processed.
 620      [Steve Henson]
 621
 622   *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
 623      Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
 624      can still be regenerated with "make depend".
 625      [Ben Laurie]
 626
 627   *) Spelling mistake in C version of CAST-128.
 628      [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
 629
 630   *) Changes to the error generation code. The perl script err-code.pl
 631      now reads in the old error codes and retains the old numbers, only
 632      adding new ones if necessary. It also only changes the .err files if new
 633      codes are added. The makefiles have been modified to only insert errors
 634      when needed (to avoid needlessly modifying header files). This is done
 635      by only inserting errors if the .err file is newer than the auto generated
 636      C file. To rebuild all the error codes from scratch (the old behaviour)
 637      either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
 638      or delete all the .err files.
 639      [Steve Henson]
 640
 641   *) CAST-128 was incorrectly implemented for short keys. The C version has
 642      been fixed, but is untested. The assembler versions are also fixed, but
 643      new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
 644      to regenerate it if needed.
 645      [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
 646       Hagino <itojun@kame.net>]
 647
 648   *) File was opened incorrectly in randfile.c.
 649      [Ulf Möller <ulf@fitug.de>]
 650
 651   *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
 652      functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
 653      GeneralizedTime. ASN1_TIME is the proper type used in certificates et
 654      al: it's just almost always a UTCTime. Note this patch adds new error
 655      codes so do a "make errors" if there are problems.
 656      [Steve Henson]
 657
 658   *) Correct Linux 1 recognition in config.
 659      [Ulf Möller <ulf@fitug.de>]
 660
 661   *) Remove pointless MD5 hash when using DSA keys in ca.
 662      [Anonymous <nobody@replay.com>]
 663
 664   *) Generate an error if given an empty string as a cert directory. Also
 665      generate an error if handed NULL (previously returned 0 to indicate an
 666      error, but didn't set one).
 667      [Ben Laurie, reported by Anonymous <nobody@replay.com>]
 668
 669   *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
 670      [Ben Laurie]
 671
 672   *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
 673      parameters. This was causing a warning which killed off the Win32 compile.
 674      [Steve Henson]
 675
 676   *) Remove C++ style comments from crypto/bn/bn_local.h.
 677      [Neil Costigan <neil.costigan@celocom.com>]
 678
 679   *) The function OBJ_txt2nid was broken. It was supposed to return a nid
 680      based on a text string, looking up short and long names and finally
 681      "dot" format. The "dot" format stuff didn't work. Added new function
 682      OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
 683      OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
 684      OID is not part of the table.
 685      [Steve Henson]
 686
 687   *) Add prototypes to X509 lookup/verify methods, fixing a bug in
 688      X509_LOOKUP_by_alias().
 689      [Ben Laurie]
 690
 691   *) Sort openssl functions by name.
 692      [Ben Laurie]
 693
 694   *) Get the gendsa program working (hopefully) and add it to app list. Remove
 695      encryption from sample DSA keys (in case anyone is interested the password
 696      was "1234").
 697      [Steve Henson]
 698
 699   *) Make _all_ *_free functions accept a NULL pointer.
 700      [Frans Heymans <fheymans@isaserver.be>]
 701
 702   *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
 703      NULL pointers.
 704      [Anonymous <nobody@replay.com>]
 705
 706   *) s_server should send the CAfile as acceptable CAs, not its own cert.
 707      [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
 708
 709   *) Don't blow it for numeric -newkey arguments to apps/req.
 710      [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
 711
 712   *) Temp key "for export" tests were wrong in s3_srvr.c.
 713      [Anonymous <nobody@replay.com>]
 714
 715   *) Add prototype for temp key callback functions
 716      SSL_CTX_set_tmp_{rsa,dh}_callback().
 717      [Ben Laurie]
 718
 719   *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
 720      DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
 721      [Steve Henson]
 722
 723   *) X509_name_add_entry() freed the wrong thing after an error.
 724      [Arne Ansper <arne@ats.cyber.ee>]
 725
 726   *) rsa_eay.c would attempt to free a NULL context.
 727      [Arne Ansper <arne@ats.cyber.ee>]
 728
 729   *) BIO_s_socket() had a broken should_retry() on Windoze.
 730      [Arne Ansper <arne@ats.cyber.ee>]
 731
 732   *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
 733      [Arne Ansper <arne@ats.cyber.ee>]
 734
 735   *) Make sure the already existing X509_STORE->depth variable is initialized
 736      in X509_STORE_new(), but document the fact that this variable is still
 737      unused in the certificate verification process.
 738      [Ralf S. Engelschall]
 739
 740   *) Fix the various library and apps files to free up pkeys obtained from
 741      X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
 742      [Steve Henson]
 743
 744   *) Fix reference counting in X509_PUBKEY_get(). This makes
 745      demos/maurice/example2.c work, amongst others, probably.
 746      [Steve Henson and Ben Laurie]
 747
 748   *) First cut of a cleanup for apps/. First the `ssleay' program is now named
 749      `openssl' and second, the shortcut symlinks for the `openssl <command>'
 750      are no longer created. This way we have a single and consistent command
 751      line interface `openssl <command>', similar to `cvs <command>'.
 752      [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
 753
 754   *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
 755      BIT STRING wrapper always have zero unused bits.
 756      [Steve Henson]
 757
 758   *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
 759      [Steve Henson]
 760
 761   *) Make the top-level INSTALL documentation easier to understand.
 762      [Paul Sutton]
 763
 764   *) Makefiles updated to exit if an error occurs in a sub-directory
 765      make (including if user presses ^C) [Paul Sutton]
 766
 767   *) Make Montgomery context stuff explicit in RSA data structure.
 768      [Ben Laurie]
 769
 770   *) Fix build order of pem and err to allow for generated pem.h.
 771      [Ben Laurie]
 772
 773   *) Fix renumbering bug in X509_NAME_delete_entry().
 774      [Ben Laurie]
 775
 776   *) Enhanced the err-ins.pl script so it makes the error library number
 777      global and can add a library name. This is needed for external ASN1 and
 778      other error libraries.
 779      [Steve Henson]
 780
 781   *) Fixed sk_insert which never worked properly.
 782      [Steve Henson]
 783
 784   *) Fix ASN1 macros so they can handle indefinite length construted
 785      EXPLICIT tags. Some non standard certificates use these: they can now
 786      be read in.
 787      [Steve Henson]
 788
 789   *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
 790      into a single doc/ssleay.txt bundle. This way the information is still
 791      preserved but no longer messes up this directory. Now it's new room for
 792      the new set of documenation files.
 793      [Ralf S. Engelschall]
 794
 795   *) SETs were incorrectly DER encoded. This was a major pain, because they
 796      shared code with SEQUENCEs, which aren't coded the same. This means that
 797      almost everything to do with SETs or SEQUENCEs has either changed name or
 798      number of arguments.
 799      [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
 800
 801   *) Fix test data to work with the above.
 802      [Ben Laurie]
 803
 804   *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
 805      was already fixed by Eric for 0.9.1 it seems.
 806      [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
 807
 808   *) Autodetect FreeBSD3.
 809      [Ben Laurie]
 810
 811   *) Fix various bugs in Configure. This affects the following platforms:
 812      nextstep
 813      ncr-scde
 814      unixware-2.0
 815      unixware-2.0-pentium
 816      sco5-cc.
 817      [Ben Laurie]
 818
 819   *) Eliminate generated files from CVS. Reorder tests to regenerate files
 820      before they are needed.
 821      [Ben Laurie]
 822
 823   *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
 824      [Ben Laurie]
 825
 826  Changes between 0.9.1b and 0.9.1c
 827
 828   *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
 829      changed SSLeay to OpenSSL in version strings.
 830      [Ralf S. Engelschall]
 831
 832   *) Some fixups to the top-level documents.
 833      [Paul Sutton]
 834
 835   *) Fixed the nasty bug where rsaref.h was not found under compile-time
 836      because the symlink to include/ was missing.
 837      [Ralf S. Engelschall]
 838
 839   *) Incorporated the popular no-RSA/DSA-only patches
 840      which allow to compile a RSA-free SSLeay.
 841      [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
 842
 843   *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
 844      when "ssleay" is still not found.
 845      [Ralf S. Engelschall]
 846
 847   *) Added more platforms to Configure: Cray T3E, HPUX 11,
 848      [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
 849
 850   *) Updated the README file.
 851      [Ralf S. Engelschall]
 852
 853   *) Added various .cvsignore files in the CVS repository subdirs
 854      to make a "cvs update" really silent.
 855      [Ralf S. Engelschall]
 856
 857   *) Recompiled the error-definition header files and added
 858      missing symbols to the Win32 linker tables.
 859      [Ralf S. Engelschall]
 860
 861   *) Cleaned up the top-level documents;
 862      o new files: CHANGES and LICENSE
 863      o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
 864      o merged COPYRIGHT into LICENSE
 865      o removed obsolete TODO file
 866      o renamed MICROSOFT to INSTALL.W32
 867      [Ralf S. Engelschall]
 868
 869   *) Removed dummy files from the 0.9.1b source tree:
 870      crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
 871      crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
 872      crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
 873      crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
 874      util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
 875      [Ralf S. Engelschall]
 876
 877   *) Added various platform portability fixes.
 878      [Mark J. Cox]
 879
 880   *) The Genesis of the OpenSSL rpject:
 881      We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
 882      Young and Tim J. Hudson created while they were working for C2Net until
 883      summer 1998.
 884      [The OpenSSL Project]
 885
 886  Changes between 0.9.0b and 0.9.1b
 887
 888   *) Updated a few CA certificates under certs/
 889      [Eric A. Young]
 890
 891   *) Changed some BIGNUM api stuff.
 892      [Eric A. Young]
 893
 894   *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
 895      DGUX x86, Linux Alpha, etc.
 896      [Eric A. Young]
 897
 898   *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
 899      RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
 900      available).
 901      [Eric A. Young]
 902
 903   *) Add -strparse option to asn1pars program which parses nested
 904      binary structures
 905      [Dr Stephen Henson <shenson@bigfoot.com>]
 906
 907   *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
 908      [Eric A. Young]
 909
 910   *) DSA fix for "ca" program.
 911      [Eric A. Young]
 912
 913   *) Added "-genkey" option to "dsaparam" program.
 914      [Eric A. Young]
 915
 916   *) Added RIPE MD160 (rmd160) message digest.
 917      [Eric A. Young]
 918
 919   *) Added -a (all) option to "ssleay version" command.
 920      [Eric A. Young]
 921
 922   *) Added PLATFORM define which is the id given to Configure.
 923      [Eric A. Young]
 924
 925   *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
 926      [Eric A. Young]
 927
 928   *) Extended the ASN.1 parser routines.
 929      [Eric A. Young]
 930
 931   *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
 932      [Eric A. Young]
 933
 934   *) Added a BN_CTX to the BN library.
 935      [Eric A. Young]
 936
 937   *) Fixed the weak key values in DES library
 938      [Eric A. Young]
 939
 940   *) Changed API in EVP library for cipher aliases.
 941      [Eric A. Young]
 942
 943   *) Added support for RC2/64bit cipher.
 944      [Eric A. Young]
 945
 946   *) Converted the lhash library to the crypto/mem.c functions.
 947      [Eric A. Young]
 948
 949   *) Added more recognized ASN.1 object ids.
 950      [Eric A. Young]
 951
 952   *) Added more RSA padding checks for SSL/TLS.
 953      [Eric A. Young]
 954
 955   *) Added BIO proxy/filter functionality.
 956      [Eric A. Young]
 957
 958   *) Added extra_certs to SSL_CTX which can be used
 959      send extra CA certificates to the client in the CA cert chain sending
 960      process. It can be configured with SSL_CTX_add_extra_chain_cert().
 961      [Eric A. Young]
 962
 963   *) Now Fortezza is denied in the authentication phase because
 964      this is key exchange mechanism is not supported by SSLeay at all.
 965      [Eric A. Young]
 966
 967   *) Additional PKCS1 checks.
 968      [Eric A. Young]
 969
 970   *) Support the string "TLSv1" for all TLS v1 ciphers.
 971      [Eric A. Young]
 972
 973   *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
 974      ex_data index of the SSL context in the X509_STORE_CTX ex_data.
 975      [Eric A. Young]
 976
 977   *) Fixed a few memory leaks.
 978      [Eric A. Young]
 979
 980   *) Fixed various code and comment typos.
 981      [Eric A. Young]
 982
 983   *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
 984      bytes sent in the client random.
 985      [Edward Bishop <ebishop@spyglass.com>]
 986