CHANGES

   1
   2  OpenSSL CHANGES
   3  _______________
   4
   5  Changes between 0.9.4 and 0.9.5  [xx XXX 1999]
   6
   7   *) Modify RSA and DSA PEM read routines to transparently handle
   8      PKCS#8 format private keys. New *_PUBKEY_* functions that handle
   9      public keys in a format compatible with certificate
  10      SubjectPublicKeyInfo structures. Unfortunately there were already
  11      functions called *_PublicKey_* which used various odd formats so
  12      these are retained for compatability: however the DSA variants were
  13      never in a public release so they have been deleted. Changed dsa/rsa
  14      utilities to handle the new format: note no releases ever handled public
  15      keys so we should be OK.
  16
  17      The primary motivation for this change is to avoid the same fiasco
  18      that dogs private keys: there are several incompatible private key
  19      formats some of which are standard and some OpenSSL specific and
  20      require various evil hacks to allow partial transparent handling and
  21      even then it doesn't work with DER formats. Given the option anything
  22      other than PKCS#8 should be dumped: but the other formats have to
  23      stay in the name of compatability.
  24
  25      With public keys and the benefit of hindsight one standard format
  26      is used which works with EVP_PKEY, RSA or DSA structures: though
  27      it clearly returns an error if you try to read the wrong kind of key.
  28
  29      Added a -pubkey option to the 'x509' utility to output the public key.
  30      Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() and add
  31      EVP_PKEY_rset_*() functions that do the same as the EVP_PKEY_assign_*()
  32      except they up the reference count of the added key (they don't "swallow"
  33      the supplied key).
  34      [Steve Henson]
  35
  36   *) Fixes to crypto/x509/by_file.c the code to read in certificates and
  37      CRLs would fail if the file contained no certificates or no CRLs:
  38      added a new function to read in both types and return the number
  39      read: this means that if none are read it will be an error. The
  40      DER versions of the certificate and CRL reader would always fail
  41      because it isn't possible to mix certificates and CRLs in DER format
  42      without choking one or the other routine. Changed this to just read
  43      a certificate: this is the best we can do. Also modified the code
  44      in apps/verify.c to take notice of return codes: it was previously
  45      attempting to read in certificates from NULL pointers and ignoring
  46      any errors: this is one reason why the cert and CRL reader seemed
  47      to work. It doesn't check return codes from the default certificate
  48      routines: these may well fail if the certificates aren't installed.
  49      [Steve Henson]
  50
  51   *) Code to support otherName option in GeneralName.
  52      [Steve Henson]
  53
  54   *) First update to verify code. Change the verify utility
  55      so it warns if it is passed a self signed certificate:
  56      for consistency with the normal behaviour. X509_verify
  57      has been modified to it will now verify a self signed
  58      certificate if *exactly* the same certificate appears
  59      in the store: it was previously impossible to trust a
  60      single self signed certificate. This means that:
  61      openssl verify ss.pem
  62      now gives a warning about a self signed certificate but
  63      openssl verify -CAfile ss.pem ss.pem
  64      is OK.
  65      [Steve Henson]
  66
  67   *) For servers, store verify_result in SSL_SESSION data structure
  68      (and add it to external session representation).
  69      This is needed when client certificate verifications fails,
  70      but an application-provided verification callback (set by
  71      SSL_CTX_set_cert_verify_callback) allows accepting the session
  72      anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
  73      but returns 1): When the session is reused, we have to set
  74      ssl->verify_result to the appropriate error code to avoid
  75      security holes.
  76      [Bodo Moeller, problem pointed out by Lutz Jaenicke]
  77
  78   *) Fix a bug in the new PKCS#7 code: it didn't consider the
  79      case in PKCS7_dataInit() where the signed PKCS7 structure
  80      didn't contain any existing data because it was being created.
  81      [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
  82
  83   *) Add a salt to the key derivation routines in enc.c. This
  84      forms the first 8 bytes of the encrypted file. Also add a
  85      -S option to allow a salt to be input on the command line.
  86      [Steve Henson]
  87
  88   *) New function X509_cmp(). Oddly enough there wasn't a function
  89      to compare two certificates. We do this by working out the SHA1
  90      hash and comparing that. X509_cmp() will be needed by the trust
  91      code.
  92      [Steve Henson]
  93
  94   *) Correctly increment the reference count in the SSL_SESSION pointer
  95      returned from SSL_get_session().
  96      [Geoff Thorpe <geoff@eu.c2.net>]
  97
  98   *) Fix for 'req': it was adding a null to request attributes.
  99      Also change the X509_LOOKUP and X509_INFO code to handle
 100      certificate auxiliary information.
 101      [Steve Henson]
 102
 103   *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
 104      the 'enc' command.
 105      [Steve Henson]
 106
 107   *) Add the possibility to add extra information to the memory leak
 108      detecting output, to form tracebacks, showing from where each
 109      allocation was originated.  Also updated sid code to be multi-
 110      thread-safe.
 111      [Richard Levitte]
 112
 113   *) Add options -text and -noout to pkcs7 utility and delete the
 114      encryption options which never did anything. Update docs.
 115      [Steve Henson]
 116
 117   *) Add options to some of the utilities to allow the pass phrase
 118      to be included on either the command line (not recommended on
 119      OSes like Unix) or read from the environment. Update the
 120      manpages and fix a few bugs.
 121      [Steve Henson]
 122
 123   *) Add a few manpages for some of the openssl commands.
 124      [Steve Henson]
 125
 126   *) Fix the -revoke option in ca. It was freeing up memory twice,
 127      leaking and not finding already revoked certificates.
 128      [Steve Henson]
 129
 130   *) Extensive changes to support certificate auxiliary information.
 131      This involves the use of X509_CERT_AUX structure and X509_AUX
 132      functions. An X509_AUX function such as PEM_read_X509_AUX()
 133      can still read in a certificate file in the usual way but it
 134      will also read in any additional "auxiliary information". By
 135      doing things this way a fair degree of compatability can be
 136      retained: existing certificates can have this information added
 137      using the new 'x509' options.
 138
 139      Current auxiliary information includes an "alias" and some trust
 140      settings. The trust settings will ultimately be used in enhanced
 141      certificate chain verification routines: currently a certificate
 142      can only be trusted if it is self signed and then it is trusted
 143      for all purposes.
 144      [Steve Henson]
 145
 146   *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).  The
 147      problem was that one of the replacement routines had not been working since
 148      SSLeay releases.  For now the offending routine has been replaced with
 149      non-optimised assembler.  Even so, this now gives around 95% performance
 150      improvement for 1024 bit RSA signs.
 151      [Mark Cox]
 152
 153   *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
 154      handling. Most clients have the effective key size in bits equal to
 155      the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
 156      A few however don't do this and instead use the size of the decrypted key
 157      to determine the RC2 key length and the AlgorithmIdentifier to determine
 158      the effective key length. In this case the effective key lenth can still
 159      be 40 bits but the key length can be 168 bits for example. This is fixed
 160      by manually forcing an RC2 key into the EVP_PKEY structure because the
 161      EVP code can't currently handle unusual RC2 key sizes: it always assumes
 162      the key length and effective key length are equal.
 163      [Steve Henson]
 164
 165   *) Add a bunch of functions that should simplify the creation of
 166      X509_NAME structures. Now you should be able to do:
 167      X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
 168      and have it automatically work out the correct field type and fill in
 169      the structures. The more adventurous can try:
 170      X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
 171      and it will (hopefully) work out the correct multibyte encoding.
 172      [Steve Henson]
 173
 174   *) Change the 'req' utility to use the new field handling and multibyte
 175      copy routines. Before the DN field creation was handled in an ad hoc
 176      way in req, ca, and x509 which was rather broken and didn't support
 177      BMPStrings or UTF8Strings. Since some software doesn't implement
 178      BMPStrings or UTF8Strings yet, they can be enabled using the config file
 179      using the dirstring_type option. See the new comment in the default
 180      openssl.cnf for more info.
 181      [Steve Henson]
 182
 183   *) Make crypto/rand/md_rand.c more robust:
 184      - Assure unique random numbers after fork().
 185      - Make sure that concurrent threads access the global counter and
 186        md serializably so that we never lose entropy in them
 187        or use exactly the same state in multiple threads.
 188        Access to the large state is not always serializable because
 189        the additional locking could be a performance killer, and
 190        md should be large enough anyway.
 191      [Bodo Moeller]
 192
 193   *) New file apps/app_rand.c with commonly needed functionality
 194      for handling the random seed file.
 195
 196      Use the random seed file in some applications that previously did not:
 197           ca,
 198           dsaparam -genkey (which also ignored its `-rand' option),
 199           s_client,
 200           s_server,
 201           x509 (when signing).
 202      Except on systems with /dev/urandom, it is crucial to have a random
 203      seed file at least for key creation, DSA signing, and for DH exchanges;
 204      for RSA signatures we could do without one.
 205
 206      gendh and gendsa (unlike genrsa) used to read only the first byte
 207      of each file listed in the `-rand' option.  The function as previously
 208      found in genrsa is now in app_rand.c and is used by all programs
 209      that support `-rand'.
 210      [Bodo Moeller]
 211
 212   *) In RAND_write_file, use mode 0600 for creating files;
 213      don't just chmod when it may be too late.
 214      [Bodo Moeller]
 215
 216   *) Report an error from X509_STORE_load_locations
 217      when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
 218      [Bill Perry]
 219
 220   *) New function ASN1_mbstring_copy() this copies a string in either
 221      ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
 222      into an ASN1_STRING type. A mask of permissible types is passed
 223      and it chooses the "minimal" type to use or an error if not type
 224      is suitable.
 225      [Steve Henson]
 226
 227   *) Add function equivalents to the various macros in asn1.h. The old
 228      macros are retained with an M_ prefix. Code inside the library can
 229      use the M_ macros. External code (including the openssl utility)
 230      should *NOT* in order to be "shared library friendly".
 231      [Steve Henson]
 232
 233   *) Add various functions that can check a certificate's extensions
 234      to see if it usable for various purposes such as SSL client,
 235      server or S/MIME and CAs of these types. This is currently
 236      VERY EXPERIMENTAL but will ultimately be used for certificate chain
 237      verification. Also added a -purpose flag to x509 utility to
 238      print out all the purposes.
 239      [Steve Henson]
 240
 241   *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
 242      functions.
 243      [Steve Henson]
 244
 245   *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
 246      for, obtain and decode and extension and obtain its critical flag.
 247      This allows all the necessary extension code to be handled in a
 248      single function call.
 249      [Steve Henson]
 250
 251   *) RC4 tune-up featuring 30-40% performance improvement on most RISC
 252      platforms. See crypto/rc4/rc4_enc.c for further details.
 253      [Andy Polyakov]
 254
 255   *) New -noout option to asn1parse. This causes no output to be produced
 256      its main use is when combined with -strparse and -out to extract data
 257      from a file (which may not be in ASN.1 format).
 258      [Steve Henson]
 259
 260   *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
 261      when producing the local key id.
 262      [Richard Levitte <levitte@stacken.kth.se>]
 263
 264   *) New option -dhparam in s_server. This allows a DH parameter file to be
 265      stated explicitly. If it is not stated then it tries the first server
 266      certificate file. The previous behaviour hard coded the filename
 267      "server.pem".
 268      [Steve Henson]
 269
 270   *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
 271      a public key to be input or output. For example:
 272      openssl rsa -in key.pem -pubout -out pubkey.pem
 273      Also added necessary DSA public key functions to handle this.
 274      [Steve Henson]
 275
 276   *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
 277      in the message. This was handled by allowing
 278      X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
 279      [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
 280
 281   *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
 282      to the end of the strings whereas this didn't. This would cause problems
 283      if strings read with d2i_ASN1_bytes() were later modified.
 284      [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
 285
 286   *) Fix for base64 decode bug. When a base64 bio reads only one line of
 287      data and it contains EOF it will end up returning an error. This is
 288      caused by input 46 bytes long. The cause is due to the way base64
 289      BIOs find the start of base64 encoded data. They do this by trying a
 290      trial decode on each line until they find one that works. When they
 291      do a flag is set and it starts again knowing it can pass all the
 292      data directly through the decoder. Unfortunately it doesn't reset
 293      the context it uses. This means that if EOF is reached an attempt
 294      is made to pass two EOFs through the context and this causes the
 295      resulting error. This can also cause other problems as well. As is
 296      usual with these problems it takes *ages* to find and the fix is
 297      trivial: move one line.
 298      [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
 299
 300   *) Ugly workaround to get s_client and s_server working under Windows. The
 301      old code wouldn't work because it needed to select() on sockets and the
 302      tty (for keypresses and to see if data could be written). Win32 only
 303      supports select() on sockets so we select() with a 1s timeout on the
 304      sockets and then see if any characters are waiting to be read, if none
 305      are present then we retry, we also assume we can always write data to
 306      the tty. This isn't nice because the code then blocks until we've
 307      received a complete line of data and it is effectively polling the
 308      keyboard at 1s intervals: however it's quite a bit better than not
 309      working at all :-) A dedicated Windows application might handle this
 310      with an event loop for example.
 311      [Steve Henson]
 312
 313   *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
 314      and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
 315      will be called when RSA_sign() and RSA_verify() are used. This is useful
 316      if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
 317      For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
 318      should *not* be used: RSA_sign() and RSA_verify() must be used instead.
 319      This necessitated the support of an extra signature type NID_md5_sha1
 320      for SSL signatures and modifications to the SSL library to use it instead
 321      of calling RSA_public_decrypt() and RSA_private_encrypt().
 322      [Steve Henson]
 323
 324   *) Add new -verify -CAfile and -CApath options to the crl program, these
 325      will lookup a CRL issuers certificate and verify the signature in a
 326      similar way to the verify program. Tidy up the crl program so it
 327      no longer acesses structures directly. Make the ASN1 CRL parsing a bit
 328      less strict. It will now permit CRL extensions even if it is not
 329      a V2 CRL: this will allow it to tolerate some broken CRLs.
 330      [Steve Henson]
 331
 332   *) Initialize all non-automatic variables each time one of the openssl
 333      sub-programs is started (this is necessary as they may be started
 334      multiple times from the "OpenSSL>" prompt).
 335      [Lennart Bang, Bodo Moeller]
 336
 337   *) Preliminary compilation option RSA_NULL which disables RSA crypto without
 338      removing all other RSA functionality (this is what NO_RSA does). This
 339      is so (for example) those in the US can disable those operations covered
 340      by the RSA patent while allowing storage and parsing of RSA keys and RSA
 341      key generation.
 342      [Steve Henson]
 343
 344   *) Non-copying interface to BIO pairs.
 345      (still largely untested)
 346      [Bodo Moeller]
 347
 348   *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
 349      ASCII string. This was handled independently in various places before.
 350      [Steve Henson]
 351
 352   *) New functions UTF8_getc() and UTF8_putc() that parse and generate
 353      UTF8 strings a character at a time.
 354      [Steve Henson]
 355
 356   *) Use client_version from client hello to select the protocol
 357      (s23_srvr.c) and for RSA client key exchange verification
 358      (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
 359      [Bodo Moeller]
 360
 361   *) Add various utility functions to handle SPKACs, these were previously
 362      handled by poking round in the structure internals. Added new function
 363      NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
 364      print, verify and generate SPKACs. Based on an original idea from
 365      Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
 366      [Steve Henson]
 367
 368   *) RIPEMD160 is operational on all platforms and is back in 'make test'.
 369      [Andy Polyakov]
 370
 371   *) Allow the config file extension section to be overwritten on the
 372      command line. Based on an original idea from Massimiliano Pala
 373      <madwolf@comune.modena.it>. The new option is called -extensions
 374      and can be applied to ca, req and x509. Also -reqexts to override
 375      the request extensions in req and -crlexts to override the crl extensions
 376      in ca.
 377      [Steve Henson]
 378
 379   *) Add new feature to the SPKAC handling in ca.  Now you can include
 380      the same field multiple times by preceding it by "XXXX." for example:
 381      1.OU="Unit name 1"
 382      2.OU="Unit name 2"
 383      this is the same syntax as used in the req config file.
 384      [Steve Henson]
 385
 386   *) Allow certificate extensions to be added to certificate requests. These
 387      are specified in a 'req_extensions' option of the req section of the
 388      config file. They can be printed out with the -text option to req but
 389      are otherwise ignored at present.
 390      [Steve Henson]
 391
 392   *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
 393      data read consists of only the final block it would not decrypted because
 394      EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
 395      A misplaced 'break' also meant the decrypted final block might not be
 396      copied until the next read.
 397      [Steve Henson]
 398
 399   *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
 400      a few extra parameters to the DH structure: these will be useful if
 401      for example we want the value of 'q' or implement X9.42 DH.
 402      [Steve Henson]
 403
 404   *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
 405      provides hooks that allow the default DSA functions or functions on a
 406      "per key" basis to be replaced. This allows hardware acceleration and
 407      hardware key storage to be handled without major modification to the
 408      library. Also added low level modexp hooks and CRYPTO_EX structure and
 409      associated functions.
 410      [Steve Henson]
 411
 412   *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
 413      as "read only": it can't be written to and the buffer it points to will
 414      not be freed. Reading from a read only BIO is much more efficient than
 415      a normal memory BIO. This was added because there are several times when
 416      an area of memory needs to be read from a BIO. The previous method was
 417      to create a memory BIO and write the data to it, this results in two
 418      copies of the data and an O(n^2) reading algorithm. There is a new
 419      function BIO_new_mem_buf() which creates a read only memory BIO from
 420      an area of memory. Also modified the PKCS#7 routines to use read only
 421      memory BIOSs.
 422      [Steve Henson]
 423
 424   *) Bugfix: ssl23_get_client_hello did not work properly when called in
 425      state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
 426      a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
 427      but a retry condition occured while trying to read the rest.
 428      [Bodo Moeller]
 429
 430   *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
 431      NID_pkcs7_encrypted by default: this was wrong since this should almost
 432      always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
 433      the encrypted data type: this is a more sensible place to put it and it
 434      allows the PKCS#12 code to be tidied up that duplicated this
 435      functionality.
 436      [Steve Henson]
 437
 438   *) Changed obj_dat.pl script so it takes its input and output files on
 439      the command line. This should avoid shell escape redirection problems
 440      under Win32.
 441      [Steve Henson]
 442
 443   *) Initial support for certificate extension requests, these are included
 444      in things like Xenroll certificate requests. Included functions to allow
 445      extensions to be obtained and added.
 446      [Steve Henson]
 447
 448   *) -crlf option to s_client and s_server for sending newlines as
 449      CRLF (as required by many protocols).
 450      [Bodo Moeller]
 451
 452  Changes between 0.9.3a and 0.9.4  [09 Aug 1999]
 453
 454   *) Install libRSAglue.a when OpenSSL is built with RSAref.
 455      [Ralf S. Engelschall]
 456
 457   *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
 458      [Andrija Antonijevic <TheAntony2@bigfoot.com>]
 459
 460   *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
 461      program.
 462      [Steve Henson]
 463
 464   *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
 465      DH parameters/keys (q is lost during that conversion, but the resulting
 466      DH parameters contain its length).
 467
 468      For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
 469      much faster than DH_generate_parameters (which creates parameters
 470      where p = 2*q + 1), and also the smaller q makes DH computations
 471      much more efficient (160-bit exponentiation instead of 1024-bit
 472      exponentiation); so this provides a convenient way to support DHE
 473      ciphersuites in SSL/TLS servers (see ssl/ssltest.c).  It is of
 474      utter importance to use
 475          SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
 476      or
 477          SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
 478      when such DH parameters are used, because otherwise small subgroup
 479      attacks may become possible!
 480      [Bodo Moeller]
 481
 482   *) Avoid memory leak in i2d_DHparams.
 483      [Bodo Moeller]
 484
 485   *) Allow the -k option to be used more than once in the enc program:
 486      this allows the same encrypted message to be read by multiple recipients.
 487      [Steve Henson]
 488
 489   *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
 490      an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
 491      it will always use the numerical form of the OID, even if it has a short
 492      or long name.
 493      [Steve Henson]
 494
 495   *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
 496      method only got called if p,q,dmp1,dmq1,iqmp components were present,
 497      otherwise bn_mod_exp was called. In the case of hardware keys for example
 498      no private key components need be present and it might store extra data
 499      in the RSA structure, which cannot be accessed from bn_mod_exp.
 500      By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
 501      private key operations.
 502      [Steve Henson]
 503
 504   *) Added support for SPARC Linux.
 505      [Andy Polyakov]
 506
 507   *) pem_password_cb function type incompatibly changed from
 508           typedef int pem_password_cb(char *buf, int size, int rwflag);
 509      to
 510           ....(char *buf, int size, int rwflag, void *userdata);
 511      so that applications can pass data to their callbacks:
 512      The PEM[_ASN1]_{read,write}... functions and macros now take an
 513      additional void * argument, which is just handed through whenever
 514      the password callback is called.
 515      [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
 516
 517      New function SSL_CTX_set_default_passwd_cb_userdata.
 518
 519      Compatibility note: As many C implementations push function arguments
 520      onto the stack in reverse order, the new library version is likely to
 521      interoperate with programs that have been compiled with the old
 522      pem_password_cb definition (PEM_whatever takes some data that
 523      happens to be on the stack as its last argument, and the callback
 524      just ignores this garbage); but there is no guarantee whatsoever that
 525      this will work.
 526
 527   *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
 528      (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
 529      problems not only on Windows, but also on some Unix platforms.
 530      To avoid problematic command lines, these definitions are now in an
 531      auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
 532      for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
 533      [Bodo Moeller]
 534
 535   *) MIPS III/IV assembler module is reimplemented.
 536      [Andy Polyakov]
 537
 538   *) More DES library cleanups: remove references to srand/rand and
 539      delete an unused file.
 540      [Ulf Möller]
 541
 542   *) Add support for the the free Netwide assembler (NASM) under Win32,
 543      since not many people have MASM (ml) and it can be hard to obtain.
 544      This is currently experimental but it seems to work OK and pass all
 545      the tests. Check out INSTALL.W32 for info.
 546      [Steve Henson]
 547
 548   *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
 549      without temporary keys kept an extra copy of the server key,
 550      and connections with temporary keys did not free everything in case
 551      of an error.
 552      [Bodo Moeller]
 553
 554   *) New function RSA_check_key and new openssl rsa option -check
 555      for verifying the consistency of RSA keys.
 556      [Ulf Moeller, Bodo Moeller]
 557
 558   *) Various changes to make Win32 compile work:
 559      1. Casts to avoid "loss of data" warnings in p5_crpt2.c
 560      2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
 561         comparison" warnings.
 562      3. Add sk_<TYPE>_sort to DEF file generator and do make update.
 563      [Steve Henson]
 564
 565   *) Add a debugging option to PKCS#5 v2 key generation function: when
 566      you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
 567      derived keys are printed to stderr.
 568      [Steve Henson]
 569
 570   *) Copy the flags in ASN1_STRING_dup().
 571      [Roman E. Pavlov <pre@mo.msk.ru>]
 572
 573   *) The x509 application mishandled signing requests containing DSA
 574      keys when the signing key was also DSA and the parameters didn't match.
 575
 576      It was supposed to omit the parameters when they matched the signing key:
 577      the verifying software was then supposed to automatically use the CA's
 578      parameters if they were absent from the end user certificate.
 579
 580      Omitting parameters is no longer recommended. The test was also
 581      the wrong way round! This was probably due to unusual behaviour in
 582      EVP_cmp_parameters() which returns 1 if the parameters match.
 583      This meant that parameters were omitted when they *didn't* match and
 584      the certificate was useless. Certificates signed with 'ca' didn't have
 585      this bug.
 586      [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
 587
 588   *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
 589      The interface is as follows:
 590      Applications can use
 591          CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
 592          CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
 593      "off" is now the default.
 594      The library internally uses
 595          CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
 596          CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
 597      to disable memory-checking temporarily.
 598
 599      Some inconsistent states that previously were possible (and were
 600      even the default) are now avoided.
 601
 602      -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
 603      with each memory chunk allocated; this is occasionally more helpful
 604      than just having a counter.
 605
 606      -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
 607
 608      -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
 609      extensions.
 610      [Bodo Moeller]
 611
 612   *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
 613      which largely parallels "options", but is for changing API behaviour,
 614      whereas "options" are about protocol behaviour.
 615      Initial "mode" flags are:
 616
 617      SSL_MODE_ENABLE_PARTIAL_WRITE   Allow SSL_write to report success when
 618                                      a single record has been written.
 619      SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER  Don't insist that SSL_write
 620                                      retries use the same buffer location.
 621                                      (But all of the contents must be
 622                                      copied!)
 623      [Bodo Moeller]
 624
 625   *) Bugfix: SSL_set_mode ignored its parameter, only SSL_CTX_set_mode
 626      worked.
 627
 628   *) Fix problems with no-hmac etc.
 629      [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
 630
 631   *) New functions RSA_get_default_method(), RSA_set_method() and
 632      RSA_get_method(). These allows replacement of RSA_METHODs without having
 633      to mess around with the internals of an RSA structure.
 634      [Steve Henson]
 635
 636   *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
 637      Also really enable memory leak checks in openssl.c and in some
 638      test programs.
 639      [Chad C. Mulligan, Bodo Moeller]
 640
 641   *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
 642      up the length of negative integers. This has now been simplified to just
 643      store the length when it is first determined and use it later, rather
 644      than trying to keep track of where data is copied and updating it to
 645      point to the end.
 646      [Steve Henson, reported by Brien Wheeler
 647       <bwheeler@authentica-security.com>]
 648
 649   *) Add a new function PKCS7_signatureVerify. This allows the verification
 650      of a PKCS#7 signature but with the signing certificate passed to the
 651      function itself. This contrasts with PKCS7_dataVerify which assumes the
 652      certificate is present in the PKCS#7 structure. This isn't always the
 653      case: certificates can be omitted from a PKCS#7 structure and be
 654      distributed by "out of band" means (such as a certificate database).
 655      [Steve Henson]
 656
 657   *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
 658      function prototypes in pem.h, also change util/mkdef.pl to add the
 659      necessary function names.
 660      [Steve Henson]
 661
 662   *) mk1mf.pl (used by Windows builds) did not properly read the
 663      options set by Configure in the top level Makefile, and Configure
 664      was not even able to write more than one option correctly.
 665      Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
 666      [Bodo Moeller]
 667
 668   *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
 669      file to be loaded from a BIO or FILE pointer. The BIO version will
 670      for example allow memory BIOs to contain config info.
 671      [Steve Henson]
 672
 673   *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
 674      Whoever hopes to achieve shared-library compatibility across versions
 675      must use this, not the compile-time macro.
 676      (Exercise 0.9.4: Which is the minimum library version required by
 677      such programs?)
 678      Note: All this applies only to multi-threaded programs, others don't
 679      need locks.
 680      [Bodo Moeller]
 681
 682   *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
 683      through a BIO pair triggered the default case, i.e.
 684      SSLerr(...,SSL_R_UNKNOWN_STATE).
 685      [Bodo Moeller]
 686
 687   *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
 688      can use the SSL library even if none of the specific BIOs is
 689      appropriate.
 690      [Bodo Moeller]
 691
 692   *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
 693      for the encoded length.
 694      [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
 695
 696   *) Add initial documentation of the X509V3 functions.
 697      [Steve Henson]
 698
 699   *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
 700      PEM_write_bio_PKCS8PrivateKey() that are equivalent to
 701      PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
 702      secure PKCS#8 private key format with a high iteration count.
 703      [Steve Henson]
 704
 705   *) Fix determination of Perl interpreter: A perl or perl5
 706      _directory_ in $PATH was also accepted as the interpreter.
 707      [Ralf S. Engelschall]
 708
 709   *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
 710      wrong with it but it was very old and did things like calling
 711      PEM_ASN1_read() directly and used MD5 for the hash not to mention some
 712      unusual formatting.
 713      [Steve Henson]
 714
 715   *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
 716      to use the new extension code.
 717      [Steve Henson]
 718
 719   *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
 720      with macros. This should make it easier to change their form, add extra
 721      arguments etc. Fix a few PEM prototypes which didn't have cipher as a
 722      constant.
 723      [Steve Henson]
 724
 725   *) Add to configuration table a new entry that can specify an alternative
 726      name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
 727      according to Mark Crispin <MRC@Panda.COM>.
 728      [Bodo Moeller]
 729
 730 #if 0
 731   *) DES CBC did not update the IV. Weird.
 732      [Ben Laurie]
 733 #else
 734      des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
 735      Changing the behaviour of the former might break existing programs --
 736      where IV updating is needed, des_ncbc_encrypt can be used.
 737 #endif
 738
 739   *) When bntest is run from "make test" it drives bc to check its
 740      calculations, as well as internally checking them. If an internal check
 741      fails, it needs to cause bc to give a non-zero result or make test carries
 742      on without noticing the failure. Fixed.
 743      [Ben Laurie]
 744
 745   *) DES library cleanups.
 746      [Ulf Möller]
 747
 748   *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
 749      used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
 750      ciphers. NOTE: although the key derivation function has been verified
 751      against some published test vectors it has not been extensively tested
 752      yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
 753      of v2.0.
 754      [Steve Henson]
 755
 756   *) Instead of "mkdir -p", which is not fully portable, use new
 757      Perl script "util/mkdir-p.pl".
 758      [Bodo Moeller]
 759
 760   *) Rewrite the way password based encryption (PBE) is handled. It used to
 761      assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
 762      structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
 763      but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
 764      the 'parameter' field of the AlgorithmIdentifier is passed to the
 765      underlying key generation function so it must do its own ASN1 parsing.
 766      This has also changed the EVP_PBE_CipherInit() function which now has a
 767      'parameter' argument instead of literal salt and iteration count values
 768      and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
 769      [Steve Henson]
 770
 771   *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
 772      and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
 773      Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
 774      KEY" because this clashed with PKCS#8 unencrypted string. Since this
 775      value was just used as a "magic string" and not used directly its
 776      value doesn't matter.
 777      [Steve Henson]
 778
 779   *) Introduce some semblance of const correctness to BN. Shame C doesn't
 780      support mutable.
 781      [Ben Laurie]
 782
 783   *) "linux-sparc64" configuration (ultrapenguin).
 784      [Ray Miller <ray.miller@oucs.ox.ac.uk>]
 785      "linux-sparc" configuration.
 786      [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
 787
 788   *) config now generates no-xxx options for missing ciphers.
 789      [Ulf Möller]
 790
 791   *) Support the EBCDIC character set (work in progress).
 792      File ebcdic.c not yet included because it has a different license.
 793      [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
 794
 795   *) Support BS2000/OSD-POSIX.
 796      [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
 797
 798   *) Make callbacks for key generation use void * instead of char *.
 799      [Ben Laurie]
 800
 801   *) Make S/MIME samples compile (not yet tested).
 802      [Ben Laurie]
 803
 804   *) Additional typesafe stacks.
 805      [Ben Laurie]
 806
 807   *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
 808      [Bodo Moeller]
 809
 810
 811  Changes between 0.9.3 and 0.9.3a  [29 May 1999]
 812
 813   *) New configuration variant "sco5-gcc".
 814
 815   *) Updated some demos.
 816      [Sean O Riordain, Wade Scholine]
 817
 818   *) Add missing BIO_free at exit of pkcs12 application.
 819      [Wu Zhigang]
 820
 821   *) Fix memory leak in conf.c.
 822      [Steve Henson]
 823
 824   *) Updates for Win32 to assembler version of MD5.
 825      [Steve Henson]
 826
 827   *) Set #! path to perl in apps/der_chop to where we found it
 828      instead of using a fixed path.
 829      [Bodo Moeller]
 830
 831   *) SHA library changes for irix64-mips4-cc.
 832      [Andy Polyakov]
 833
 834   *) Improvements for VMS support.
 835      [Richard Levitte]
 836
 837
 838  Changes between 0.9.2b and 0.9.3  [24 May 1999]
 839
 840   *) Bignum library bug fix. IRIX 6 passes "make test" now!
 841      This also avoids the problems with SC4.2 and unpatched SC5.
 842      [Andy Polyakov <appro@fy.chalmers.se>]
 843
 844   *) New functions sk_num, sk_value and sk_set to replace the previous macros.
 845      These are required because of the typesafe stack would otherwise break
 846      existing code. If old code used a structure member which used to be STACK
 847      and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
 848      sk_num or sk_value it would produce an error because the num, data members
 849      are not present in STACK_OF. Now it just produces a warning. sk_set
 850      replaces the old method of assigning a value to sk_value
 851      (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
 852      that does this will no longer work (and should use sk_set instead) but
 853      this could be regarded as a "questionable" behaviour anyway.
 854      [Steve Henson]
 855
 856   *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
 857      correctly handle encrypted S/MIME data.
 858      [Steve Henson]
 859
 860   *) Change type of various DES function arguments from des_cblock
 861      (which means, in function argument declarations, pointer to char)
 862      to des_cblock * (meaning pointer to array with 8 char elements),
 863      which allows the compiler to do more typechecking; it was like
 864      that back in SSLeay, but with lots of ugly casts.
 865
 866      Introduce new type const_des_cblock.
 867      [Bodo Moeller]
 868
 869   *) Reorganise the PKCS#7 library and get rid of some of the more obvious
 870      problems: find RecipientInfo structure that matches recipient certificate
 871      and initialise the ASN1 structures properly based on passed cipher.
 872      [Steve Henson]
 873
 874   *) Belatedly make the BN tests actually check the results.
 875      [Ben Laurie]
 876
 877   *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
 878      to and from BNs: it was completely broken. New compilation option
 879      NEG_PUBKEY_BUG to allow for some broken certificates that encode public
 880      key elements as negative integers.
 881      [Steve Henson]
 882
 883   *) Reorganize and speed up MD5.
 884      [Andy Polyakov <appro@fy.chalmers.se>]
 885
 886   *) VMS support.
 887      [Richard Levitte <richard@levitte.org>]
 888
 889   *) New option -out to asn1parse to allow the parsed structure to be
 890      output to a file. This is most useful when combined with the -strparse
 891      option to examine the output of things like OCTET STRINGS.
 892      [Steve Henson]
 893
 894   *) Make SSL library a little more fool-proof by not requiring any longer
 895      that SSL_set_{accept,connect}_state be called before
 896      SSL_{accept,connect} may be used (SSL_set_..._state is omitted
 897      in many applications because usually everything *appeared* to work as
 898      intended anyway -- now it really works as intended).
 899      [Bodo Moeller]
 900
 901   *) Move openssl.cnf out of lib/.
 902      [Ulf Möller]
 903
 904   *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
 905      -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
 906      -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
 907      [Ralf S. Engelschall]
 908
 909   *) Various fixes to the EVP and PKCS#7 code. It may now be able to
 910      handle PKCS#7 enveloped data properly.
 911      [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
 912
 913   *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
 914      copying pointers.  The cert_st handling is changed by this in
 915      various ways (and thus what used to be known as ctx->default_cert
 916      is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
 917      any longer when s->cert does not give us what we need).
 918      ssl_cert_instantiate becomes obsolete by this change.
 919      As soon as we've got the new code right (possibly it already is?),
 920      we have solved a couple of bugs of the earlier code where s->cert
 921      was used as if it could not have been shared with other SSL structures.
 922
 923      Note that using the SSL API in certain dirty ways now will result
 924      in different behaviour than observed with earlier library versions:
 925      Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
 926      does not influence s as it used to.
 927
 928      In order to clean up things more thoroughly, inside SSL_SESSION
 929      we don't use CERT any longer, but a new structure SESS_CERT
 930      that holds per-session data (if available); currently, this is
 931      the peer's certificate chain and, for clients, the server's certificate
 932      and temporary key.  CERT holds only those values that can have
 933      meaningful defaults in an SSL_CTX.
 934      [Bodo Moeller]
 935
 936   *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
 937      from the internal representation. Various PKCS#7 fixes: remove some
 938      evil casts and set the enc_dig_alg field properly based on the signing
 939      key type.
 940      [Steve Henson]
 941
 942   *) Allow PKCS#12 password to be set from the command line or the
 943      environment. Let 'ca' get its config file name from the environment
 944      variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
 945      and 'x509').
 946      [Steve Henson]
 947
 948   *) Allow certificate policies extension to use an IA5STRING for the
 949      organization field. This is contrary to the PKIX definition but
 950      VeriSign uses it and IE5 only recognises this form. Document 'x509'
 951      extension option.
 952      [Steve Henson]
 953
 954   *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
 955      without disallowing inline assembler and the like for non-pedantic builds.
 956      [Ben Laurie]
 957
 958   *) Support Borland C++ builder.
 959      [Janez Jere <jj@void.si>, modified by Ulf Möller]
 960
 961   *) Support Mingw32.
 962      [Ulf Möller]
 963
 964   *) SHA-1 cleanups and performance enhancements.
 965      [Andy Polyakov <appro@fy.chalmers.se>]
 966
 967   *) Sparc v8plus assembler for the bignum library.
 968      [Andy Polyakov <appro@fy.chalmers.se>]
 969
 970   *) Accept any -xxx and +xxx compiler options in Configure.
 971      [Ulf Möller]
 972
 973   *) Update HPUX configuration.
 974      [Anonymous]
 975
 976   *) Add missing sk_<type>_unshift() function to safestack.h
 977      [Ralf S. Engelschall]
 978
 979   *) New function SSL_CTX_use_certificate_chain_file that sets the
 980      "extra_cert"s in addition to the certificate.  (This makes sense
 981      only for "PEM" format files, as chains as a whole are not
 982      DER-encoded.)
 983      [Bodo Moeller]
 984
 985   *) Support verify_depth from the SSL API.
 986      x509_vfy.c had what can be considered an off-by-one-error:
 987      Its depth (which was not part of the external interface)
 988      was actually counting the number of certificates in a chain;
 989      now it really counts the depth.
 990      [Bodo Moeller]
 991
 992   *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
 993      instead of X509err, which often resulted in confusing error
 994      messages since the error codes are not globally unique
 995      (e.g. an alleged error in ssl3_accept when a certificate
 996      didn't match the private key).
 997
 998   *) New function SSL_CTX_set_session_id_context that allows to set a default
 999      value (so that you don't need SSL_set_session_id_context for each
1000      connection using the SSL_CTX).
1001      [Bodo Moeller]
1002
1003   *) OAEP decoding bug fix.
1004      [Ulf Möller]
1005
1006   *) Support INSTALL_PREFIX for package builders, as proposed by
1007      David Harris.
1008      [Bodo Moeller]
1009
1010   *) New Configure options "threads" and "no-threads".  For systems
1011      where the proper compiler options are known (currently Solaris
1012      and Linux), "threads" is the default.
1013      [Bodo Moeller]
1014
1015   *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
1016      [Bodo Moeller]
1017
1018   *) Install various scripts to $(OPENSSLDIR)/misc, not to
1019      $(INSTALLTOP)/bin -- they shouldn't clutter directories
1020      such as /usr/local/bin.
1021      [Bodo Moeller]
1022
1023   *) "make linux-shared" to build shared libraries.
1024      [Niels Poppe <niels@netbox.org>]
1025
1026   *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
1027      [Ulf Möller]
1028
1029   *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
1030      extension adding in x509 utility.
1031      [Steve Henson]
1032
1033   *) Remove NOPROTO sections and error code comments.
1034      [Ulf Möller]
1035
1036   *) Partial rewrite of the DEF file generator to now parse the ANSI
1037      prototypes.
1038      [Steve Henson]
1039
1040   *) New Configure options --prefix=DIR and --openssldir=DIR.
1041      [Ulf Möller]
1042
1043   *) Complete rewrite of the error code script(s). It is all now handled
1044      by one script at the top level which handles error code gathering,
1045      header rewriting and C source file generation. It should be much better
1046      than the old method: it now uses a modified version of Ulf's parser to
1047      read the ANSI prototypes in all header files (thus the old K&R definitions
1048      aren't needed for error creation any more) and do a better job of
1049      translating function codes into names. The old 'ASN1 error code imbedded
1050      in a comment' is no longer necessary and it doesn't use .err files which
1051      have now been deleted. Also the error code call doesn't have to appear all
1052      on one line (which resulted in some large lines...).
1053      [Steve Henson]
1054
1055   *) Change #include filenames from <foo.h> to <openssl/foo.h>.
1056      [Bodo Moeller]
1057
1058   *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
1059      0 (which usually indicates a closed connection), but continue reading.
1060      [Bodo Moeller]
1061
1062   *) Fix some race conditions.
1063      [Bodo Moeller]
1064
1065   *) Add support for CRL distribution points extension. Add Certificate
1066      Policies and CRL distribution points documentation.
1067      [Steve Henson]
1068
1069   *) Move the autogenerated header file parts to crypto/opensslconf.h.
1070      [Ulf Möller]
1071
1072   *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
1073      8 of keying material. Merlin has also confirmed interop with this fix
1074      between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
1075      [Merlin Hughes <merlin@baltimore.ie>]
1076
1077   *) Fix lots of warnings.
1078      [Richard Levitte <levitte@stacken.kth.se>]
1079
1080   *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
1081      the directory spec didn't end with a LIST_SEPARATOR_CHAR.
1082      [Richard Levitte <levitte@stacken.kth.se>]
1083
1084   *) Fix problems with sizeof(long) == 8.
1085      [Andy Polyakov <appro@fy.chalmers.se>]
1086
1087   *) Change functions to ANSI C.
1088      [Ulf Möller]
1089
1090   *) Fix typos in error codes.
1091      [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
1092
1093   *) Remove defunct assembler files from Configure.
1094      [Ulf Möller]
1095
1096   *) SPARC v8 assembler BIGNUM implementation.
1097      [Andy Polyakov <appro@fy.chalmers.se>]
1098
1099   *) Support for Certificate Policies extension: both print and set.
1100      Various additions to support the r2i method this uses.
1101      [Steve Henson]
1102
1103   *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
1104      return a const string when you are expecting an allocated buffer.
1105      [Ben Laurie]
1106
1107   *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
1108      types DirectoryString and DisplayText.
1109      [Steve Henson]
1110
1111   *) Add code to allow r2i extensions to access the configuration database,
1112      add an LHASH database driver and add several ctx helper functions.
1113      [Steve Henson]
1114
1115   *) Fix an evil bug in bn_expand2() which caused various BN functions to
1116      fail when they extended the size of a BIGNUM.
1117      [Steve Henson]
1118
1119   *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
1120      support typesafe stack.
1121      [Steve Henson]
1122
1123   *) Fix typo in SSL_[gs]et_options().
1124      [Nils Frostberg <nils@medcom.se>]
1125
1126   *) Delete various functions and files that belonged to the (now obsolete)
1127      old X509V3 handling code.
1128      [Steve Henson]
1129
1130   *) New Configure option "rsaref".
1131      [Ulf Möller]
1132
1133   *) Don't auto-generate pem.h.
1134      [Bodo Moeller]
1135
1136   *) Introduce type-safe ASN.1 SETs.
1137      [Ben Laurie]
1138
1139   *) Convert various additional casted stacks to type-safe STACK_OF() variants.
1140      [Ben Laurie, Ralf S. Engelschall, Steve Henson]
1141
1142   *) Introduce type-safe STACKs. This will almost certainly break lots of code
1143      that links with OpenSSL (well at least cause lots of warnings), but fear
1144      not: the conversion is trivial, and it eliminates loads of evil casts. A
1145      few STACKed things have been converted already. Feel free to convert more.
1146      In the fullness of time, I'll do away with the STACK type altogether.
1147      [Ben Laurie]
1148
1149   *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
1150      specified in <certfile> by updating the entry in the index.txt file.
1151      This way one no longer has to edit the index.txt file manually for
1152      revoking a certificate. The -revoke option does the gory details now.
1153      [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
1154
1155   *) Fix `openssl crl -noout -text' combination where `-noout' killed the
1156      `-text' option at all and this way the `-noout -text' combination was
1157      inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
1158      [Ralf S. Engelschall]
1159
1160   *) Make sure a corresponding plain text error message exists for the
1161      X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
1162      verify callback function determined that a certificate was revoked.
1163      [Ralf S. Engelschall]
1164
1165   *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
1166      ciphers that were excluded, e.g. by -DNO_IDEA.  Also, test
1167      all available cipers including rc5, which was forgotten until now.
1168      In order to let the testing shell script know which algorithms
1169      are available, a new (up to now undocumented) command
1170      "openssl list-cipher-commands" is used.
1171      [Bodo Moeller]
1172
1173   *) Bugfix: s_client occasionally would sleep in select() when
1174      it should have checked SSL_pending() first.
1175      [Bodo Moeller]
1176
1177   *) New functions DSA_do_sign and DSA_do_verify to provide access to
1178      the raw DSA values prior to ASN.1 encoding.
1179      [Ulf Möller]
1180
1181   *) Tweaks to Configure
1182      [Niels Poppe <niels@netbox.org>]
1183
1184   *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
1185      yet...
1186      [Steve Henson]
1187
1188   *) New variables $(RANLIB) and $(PERL) in the Makefiles.
1189      [Ulf Möller]
1190
1191   *) New config option to avoid instructions that are illegal on the 80386.
1192      The default code is faster, but requires at least a 486.
1193      [Ulf Möller]
1194
1195   *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
1196      SSL2_SERVER_VERSION (not used at all) macros, which are now the
1197      same as SSL2_VERSION anyway.
1198      [Bodo Moeller]
1199
1200   *) New "-showcerts" option for s_client.
1201      [Bodo Moeller]
1202
1203   *) Still more PKCS#12 integration. Add pkcs12 application to openssl
1204      application. Various cleanups and fixes.
1205      [Steve Henson]
1206
1207   *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
1208      modify error routines to work internally. Add error codes and PBE init
1209      to library startup routines.
1210      [Steve Henson]
1211
1212   *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
1213      packing functions to asn1 and evp. Changed function names and error
1214      codes along the way.
1215      [Steve Henson]
1216
1217   *) PKCS12 integration: and so it begins... First of several patches to
1218      slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
1219      objects to objects.h
1220      [Steve Henson]
1221
1222   *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
1223      and display support for Thawte strong extranet extension.
1224      [Steve Henson]
1225
1226   *) Add LinuxPPC support.
1227      [Jeff Dubrule <igor@pobox.org>]
1228
1229   *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
1230      bn_div_words in alpha.s.
1231      [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
1232
1233   *) Make sure the RSA OAEP test is skipped under -DRSAref because
1234      OAEP isn't supported when OpenSSL is built with RSAref.
1235      [Ulf Moeller <ulf@fitug.de>]
1236
1237   *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
1238      so they no longer are missing under -DNOPROTO.
1239      [Soren S. Jorvang <soren@t.dk>]
1240
1241
1242  Changes between 0.9.1c and 0.9.2b  [22 Mar 1999]
1243
1244   *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
1245      doesn't work when the session is reused. Coming soon!
1246      [Ben Laurie]
1247
1248   *) Fix a security hole, that allows sessions to be reused in the wrong
1249      context thus bypassing client cert protection! All software that uses
1250      client certs and session caches in multiple contexts NEEDS PATCHING to
1251      allow session reuse! A fuller solution is in the works.
1252      [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
1253
1254   *) Some more source tree cleanups (removed obsolete files
1255      crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
1256      permission on "config" script to be executable) and a fix for the INSTALL
1257      document.
1258      [Ulf Moeller <ulf@fitug.de>]
1259
1260   *) Remove some legacy and erroneous uses of malloc, free instead of
1261      Malloc, Free.
1262      [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
1263
1264   *) Make rsa_oaep_test return non-zero on error.
1265      [Ulf Moeller <ulf@fitug.de>]
1266
1267   *) Add support for native Solaris shared libraries. Configure
1268      solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
1269      if someone would make that last step automatic.
1270      [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
1271
1272   *) ctx_size was not built with the right compiler during "make links". Fixed.
1273      [Ben Laurie]
1274
1275   *) Change the meaning of 'ALL' in the cipher list. It now means "everything
1276      except NULL ciphers". This means the default cipher list will no longer
1277      enable NULL ciphers. They need to be specifically enabled e.g. with
1278      the string "DEFAULT:eNULL".
1279      [Steve Henson]
1280
1281   *) Fix to RSA private encryption routines: if p < q then it would
1282      occasionally produce an invalid result. This will only happen with
1283      externally generated keys because OpenSSL (and SSLeay) ensure p > q.
1284      [Steve Henson]
1285
1286   *) Be less restrictive and allow also `perl util/perlpath.pl
1287      /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
1288      because this way one can also use an interpreter named `perl5' (which is
1289      usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
1290      installed as `perl').
1291      [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
1292
1293   *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
1294      [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
1295
1296   *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
1297      advapi32.lib to Win32 build and change the pem test comparision
1298      to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
1299      suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
1300      and crypto/des/ede_cbcm_enc.c.
1301      [Steve Henson]
1302
1303   *) DES quad checksum was broken on big-endian architectures. Fixed.
1304      [Ben Laurie]
1305
1306   *) Comment out two functions in bio.h that aren't implemented. Fix up the
1307      Win32 test batch file so it (might) work again. The Win32 test batch file
1308      is horrible: I feel ill....
1309      [Steve Henson]
1310
1311   *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
1312      in e_os.h. Audit of header files to check ANSI and non ANSI
1313      sections: 10 functions were absent from non ANSI section and not exported
1314      from Windows DLLs. Fixed up libeay.num for new functions.
1315      [Steve Henson]
1316
1317   *) Make `openssl version' output lines consistent.
1318      [Ralf S. Engelschall]
1319
1320   *) Fix Win32 symbol export lists for BIO functions: Added
1321      BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
1322      to ms/libeay{16,32}.def.
1323      [Ralf S. Engelschall]
1324
1325   *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
1326      fine under Unix and passes some trivial tests I've now added. But the
1327      whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
1328      added to make sure no one expects that this stuff really works in the
1329      OpenSSL 0.9.2 release.  Additionally I've started to clean the XS sources
1330      up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
1331      openssl_bio.xs.
1332      [Ralf S. Engelschall]
1333
1334   *) Fix the generation of two part addresses in perl.
1335      [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
1336
1337   *) Add config entry for Linux on MIPS.
1338      [John Tobey <jtobey@channel1.com>]
1339
1340   *) Make links whenever Configure is run, unless we are on Windoze.
1341      [Ben Laurie]
1342
1343   *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
1344      Currently only issuerAltName and AuthorityKeyIdentifier make any sense
1345      in CRLs.
1346      [Steve Henson]
1347
1348   *) Add a useful kludge to allow package maintainers to specify compiler and
1349      other platforms details on the command line without having to patch the
1350      Configure script everytime: One now can use ``perl Configure
1351      <id>:<details>'', i.e. platform ids are allowed to have details appended
1352      to them (seperated by colons). This is treated as there would be a static
1353      pre-configured entry in Configure's %table under key <id> with value
1354      <details> and ``perl Configure <id>'' is called.  So, when you want to
1355      perform a quick test-compile under FreeBSD 3.1 with pgcc and without
1356      assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
1357      now, which overrides the FreeBSD-elf entry on-the-fly.
1358      [Ralf S. Engelschall]
1359
1360   *) Disable new TLS1 ciphersuites by default: they aren't official yet.
1361      [Ben Laurie]
1362
1363   *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
1364      on the `perl Configure ...' command line. This way one can compile
1365      OpenSSL libraries with Position Independent Code (PIC) which is needed
1366      for linking it into DSOs.
1367      [Ralf S. Engelschall]
1368
1369   *) Remarkably, export ciphers were totally broken and no-one had noticed!
1370      Fixed.
1371      [Ben Laurie]
1372
1373   *) Cleaned up the LICENSE document: The official contact for any license
1374      questions now is the OpenSSL core team under openssl-core@openssl.org.
1375      And add a paragraph about the dual-license situation to make sure people
1376      recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
1377      to the OpenSSL toolkit.
1378      [Ralf S. Engelschall]
1379
1380   *) General source tree makefile cleanups: Made `making xxx in yyy...'
1381      display consistent in the source tree and replaced `/bin/rm' by `rm'.
1382      Additonally cleaned up the `make links' target: Remove unnecessary
1383      semicolons, subsequent redundant removes, inline point.sh into mklink.sh
1384      to speed processing and no longer clutter the display with confusing
1385      stuff. Instead only the actually done links are displayed.
1386      [Ralf S. Engelschall]
1387
1388   *) Permit null encryption ciphersuites, used for authentication only. It used
1389      to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
1390      It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
1391      encryption.
1392      [Ben Laurie]
1393
1394   *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
1395      signed attributes when verifying signatures (this would break them),
1396      the detached data encoding was wrong and public keys obtained using
1397      X509_get_pubkey() weren't freed.
1398      [Steve Henson]
1399
1400   *) Add text documentation for the BUFFER functions. Also added a work around
1401      to a Win95 console bug. This was triggered by the password read stuff: the
1402      last character typed gets carried over to the next fread(). If you were
1403      generating a new cert request using 'req' for example then the last
1404      character of the passphrase would be CR which would then enter the first
1405      field as blank.
1406      [Steve Henson]
1407
1408   *) Added the new `Includes OpenSSL Cryptography Software' button as
1409      doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
1410      button and can be used by applications based on OpenSSL to show the
1411      relationship to the OpenSSL project.
1412      [Ralf S. Engelschall]
1413
1414   *) Remove confusing variables in function signatures in files
1415      ssl/ssl_lib.c and ssl/ssl.h.
1416      [Lennart Bong <lob@kulthea.stacken.kth.se>]
1417
1418   *) Don't install bss_file.c under PREFIX/include/
1419      [Lennart Bong <lob@kulthea.stacken.kth.se>]
1420
1421   *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
1422      functions that return function pointers and has support for NT specific
1423      stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
1424      #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
1425      unsigned to signed types: this was killing the Win32 compile.
1426      [Steve Henson]
1427
1428   *) Add new certificate file to stack functions,
1429      SSL_add_dir_cert_subjects_to_stack() and
1430      SSL_add_file_cert_subjects_to_stack().  These largely supplant
1431      SSL_load_client_CA_file(), and can be used to add multiple certs easily
1432      to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
1433      This means that Apache-SSL and similar packages don't have to mess around
1434      to add as many CAs as they want to the preferred list.
1435      [Ben Laurie]
1436
1437   *) Experiment with doxygen documentation. Currently only partially applied to
1438      ssl/ssl_lib.c.
1439      See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
1440      openssl.doxy as the configuration file.
1441      [Ben Laurie]
1442
1443   *) Get rid of remaining C++-style comments which strict C compilers hate.
1444      [Ralf S. Engelschall, pointed out by Carlos Amengual]
1445
1446   *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
1447      compiled in by default: it has problems with large keys.
1448      [Steve Henson]
1449
1450   *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
1451      DH private keys and/or callback functions which directly correspond to
1452      their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
1453      is needed for applications which have to configure certificates on a
1454      per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
1455      (e.g. s_server).
1456         For the RSA certificate situation is makes no difference, but
1457      for the DSA certificate situation this fixes the "no shared cipher"
1458      problem where the OpenSSL cipher selection procedure failed because the
1459      temporary keys were not overtaken from the context and the API provided
1460      no way to reconfigure them.
1461         The new functions now let applications reconfigure the stuff and they
1462      are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
1463      SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback.  Additionally a new
1464      non-public-API function ssl_cert_instantiate() is used as a helper
1465      function and also to reduce code redundancy inside ssl_rsa.c.
1466      [Ralf S. Engelschall]
1467
1468   *) Move s_server -dcert and -dkey options out of the undocumented feature
1469      area because they are useful for the DSA situation and should be
1470      recognized by the users.
1471      [Ralf S. Engelschall]
1472
1473   *) Fix the cipher decision scheme for export ciphers: the export bits are
1474      *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
1475      SSL_EXP_MASK.  So, the original variable has to be used instead of the
1476      already masked variable.
1477      [Richard Levitte <levitte@stacken.kth.se>]
1478
1479   *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
1480      [Richard Levitte <levitte@stacken.kth.se>]
1481
1482   *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
1483      from `int' to `unsigned int' because it's a length and initialized by
1484      EVP_DigestFinal() which expects an `unsigned int *'.
1485      [Richard Levitte <levitte@stacken.kth.se>]
1486
1487   *) Don't hard-code path to Perl interpreter on shebang line of Configure
1488      script. Instead use the usual Shell->Perl transition trick.
1489      [Ralf S. Engelschall]
1490
1491   *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
1492      (in addition to RSA certificates) to match the behaviour of `openssl dsa
1493      -noout -modulus' as it's already the case for `openssl rsa -noout
1494      -modulus'.  For RSA the -modulus is the real "modulus" while for DSA
1495      currently the public key is printed (a decision which was already done by
1496      `openssl dsa -modulus' in the past) which serves a similar purpose.
1497      Additionally the NO_RSA no longer completely removes the whole -modulus
1498      option; it now only avoids using the RSA stuff. Same applies to NO_DSA
1499      now, too.
1500      [Ralf S.  Engelschall]
1501
1502   *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
1503      BIO. See the source (crypto/evp/bio_ok.c) for more info.
1504      [Arne Ansper <arne@ats.cyber.ee>]
1505
1506   *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
1507      to be added. Now both 'req' and 'ca' can use new objects defined in the
1508      config file.
1509      [Steve Henson]
1510
1511   *) Add cool BIO that does syslog (or event log on NT).
1512      [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
1513
1514   *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
1515      TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
1516      TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
1517      Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
1518      [Ben Laurie]
1519
1520   *) Add preliminary config info for new extension code.
1521      [Steve Henson]
1522
1523   *) Make RSA_NO_PADDING really use no padding.
1524      [Ulf Moeller <ulf@fitug.de>]
1525
1526   *) Generate errors when private/public key check is done.
1527      [Ben Laurie]
1528
1529   *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
1530      for some CRL extensions and new objects added.
1531      [Steve Henson]
1532
1533   *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
1534      key usage extension and fuller support for authority key id.
1535      [Steve Henson]
1536
1537   *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
1538      padding method for RSA, which is recommended for new applications in PKCS
1539      #1 v2.0 (RFC 2437, October 1998).
1540      OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
1541      foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
1542      against Bleichbacher's attack on RSA.
1543      [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
1544       Ben Laurie]
1545
1546   *) Updates to the new SSL compression code
1547      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
1548
1549   *) Fix so that the version number in the master secret, when passed
1550      via RSA, checks that if TLS was proposed, but we roll back to SSLv3
1551      (because the server will not accept higher), that the version number
1552      is 0x03,0x01, not 0x03,0x00
1553      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
1554
1555   *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
1556      leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
1557      in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
1558      [Steve Henson]
1559
1560   *) Support for RAW extensions where an arbitrary extension can be
1561      created by including its DER encoding. See apps/openssl.cnf for
1562      an example.
1563      [Steve Henson]
1564
1565   *) Make sure latest Perl versions don't interpret some generated C array
1566      code as Perl array code in the crypto/err/err_genc.pl script.
1567      [Lars Weber <3weber@informatik.uni-hamburg.de>]
1568
1569   *) Modify ms/do_ms.bat to not generate assembly language makefiles since
1570      not many people have the assembler. Various Win32 compilation fixes and
1571      update to the INSTALL.W32 file with (hopefully) more accurate Win32
1572      build instructions.
1573      [Steve Henson]
1574
1575   *) Modify configure script 'Configure' to automatically create crypto/date.h
1576      file under Win32 and also build pem.h from pem.org. New script
1577      util/mkfiles.pl to create the MINFO file on environments that can't do a
1578      'make files': perl util/mkfiles.pl >MINFO should work.
1579      [Steve Henson]
1580
1581   *) Major rework of DES function declarations, in the pursuit of correctness
1582      and purity. As a result, many evil casts evaporated, and some weirdness,
1583      too. You may find this causes warnings in your code. Zapping your evil
1584      casts will probably fix them. Mostly.
1585      [Ben Laurie]
1586
1587   *) Fix for a typo in asn1.h. Bug fix to object creation script
1588      obj_dat.pl. It considered a zero in an object definition to mean
1589      "end of object": none of the objects in objects.h have any zeros
1590      so it wasn't spotted.
1591      [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
1592
1593   *) Add support for Triple DES Cipher Block Chaining with Output Feedback
1594      Masking (CBCM). In the absence of test vectors, the best I have been able
1595      to do is check that the decrypt undoes the encrypt, so far. Send me test
1596      vectors if you have them.
1597      [Ben Laurie]
1598
1599   *) Correct calculation of key length for export ciphers (too much space was
1600      allocated for null ciphers). This has not been tested!
1601      [Ben Laurie]
1602
1603   *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
1604      message is now correct (it understands "crypto" and "ssl" on its
1605      command line). There is also now an "update" option. This will update
1606      the util/ssleay.num and util/libeay.num files with any new functions.
1607      If you do a:
1608      perl util/mkdef.pl crypto ssl update
1609      it will update them.
1610      [Steve Henson]
1611
1612   *) Overhauled the Perl interface (perl/*):
1613      - ported BN stuff to OpenSSL's different BN library
1614      - made the perl/ source tree CVS-aware
1615      - renamed the package from SSLeay to OpenSSL (the files still contain
1616        their history because I've copied them in the repository)
1617      - removed obsolete files (the test scripts will be replaced
1618        by better Test::Harness variants in the future)
1619      [Ralf S. Engelschall]
1620
1621   *) First cut for a very conservative source tree cleanup:
1622      1. merge various obsolete readme texts into doc/ssleay.txt
1623      where we collect the old documents and readme texts.
1624      2. remove the first part of files where I'm already sure that we no
1625      longer need them because of three reasons: either they are just temporary
1626      files which were left by Eric or they are preserved original files where
1627      I've verified that the diff is also available in the CVS via "cvs diff
1628      -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
1629      the crypto/md/ stuff).
1630      [Ralf S. Engelschall]
1631
1632   *) More extension code. Incomplete support for subject and issuer alt
1633      name, issuer and authority key id. Change the i2v function parameters
1634      and add an extra 'crl' parameter in the X509V3_CTX structure: guess
1635      what that's for :-) Fix to ASN1 macro which messed up
1636      IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
1637      [Steve Henson]
1638
1639   *) Preliminary support for ENUMERATED type. This is largely copied from the
1640      INTEGER code.
1641      [Steve Henson]
1642
1643   *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
1644      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
1645
1646   *) Make sure `make rehash' target really finds the `openssl' program.
1647      [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
1648
1649   *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
1650      like to hear about it if this slows down other processors.
1651      [Ben Laurie]
1652
1653   *) Add CygWin32 platform information to Configure script.
1654      [Alan Batie <batie@aahz.jf.intel.com>]
1655
1656   *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
1657      [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
1658
1659   *) New program nseq to manipulate netscape certificate sequences
1660      [Steve Henson]
1661
1662   *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
1663      few typos.
1664      [Steve Henson]
1665
1666   *) Fixes to BN code.  Previously the default was to define BN_RECURSION
1667      but the BN code had some problems that would cause failures when
1668      doing certificate verification and some other functions.
1669      [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
1670
1671   *) Add ASN1 and PEM code to support netscape certificate sequences.
1672      [Steve Henson]
1673
1674   *) Add ASN1 and PEM code to support netscape certificate sequences.
1675      [Steve Henson]
1676
1677   *) Add several PKIX and private extended key usage OIDs.
1678      [Steve Henson]
1679
1680   *) Modify the 'ca' program to handle the new extension code. Modify
1681      openssl.cnf for new extension format, add comments.
1682      [Steve Henson]
1683
1684   *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
1685      and add a sample to openssl.cnf so req -x509 now adds appropriate
1686      CA extensions.
1687      [Steve Henson]
1688
1689   *) Continued X509 V3 changes. Add to other makefiles, integrate with the
1690      error code, add initial support to X509_print() and x509 application.
1691      [Steve Henson]
1692
1693   *) Takes a deep breath and start addding X509 V3 extension support code. Add
1694      files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
1695      stuff is currently isolated and isn't even compiled yet.
1696      [Steve Henson]
1697
1698   *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
1699      ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
1700      Removed the versions check from X509 routines when loading extensions:
1701      this allows certain broken certificates that don't set the version
1702      properly to be processed.
1703      [Steve Henson]
1704
1705   *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
1706      Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
1707      can still be regenerated with "make depend".
1708      [Ben Laurie]
1709
1710   *) Spelling mistake in C version of CAST-128.
1711      [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
1712
1713   *) Changes to the error generation code. The perl script err-code.pl
1714      now reads in the old error codes and retains the old numbers, only
1715      adding new ones if necessary. It also only changes the .err files if new
1716      codes are added. The makefiles have been modified to only insert errors
1717      when needed (to avoid needlessly modifying header files). This is done
1718      by only inserting errors if the .err file is newer than the auto generated
1719      C file. To rebuild all the error codes from scratch (the old behaviour)
1720      either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
1721      or delete all the .err files.
1722      [Steve Henson]
1723
1724   *) CAST-128 was incorrectly implemented for short keys. The C version has
1725      been fixed, but is untested. The assembler versions are also fixed, but
1726      new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
1727      to regenerate it if needed.
1728      [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
1729       Hagino <itojun@kame.net>]
1730
1731   *) File was opened incorrectly in randfile.c.
1732      [Ulf Möller <ulf@fitug.de>]
1733
1734   *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
1735      functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
1736      GeneralizedTime. ASN1_TIME is the proper type used in certificates et
1737      al: it's just almost always a UTCTime. Note this patch adds new error
1738      codes so do a "make errors" if there are problems.
1739      [Steve Henson]
1740
1741   *) Correct Linux 1 recognition in config.
1742      [Ulf Möller <ulf@fitug.de>]
1743
1744   *) Remove pointless MD5 hash when using DSA keys in ca.
1745      [Anonymous <nobody@replay.com>]
1746
1747   *) Generate an error if given an empty string as a cert directory. Also
1748      generate an error if handed NULL (previously returned 0 to indicate an
1749      error, but didn't set one).
1750      [Ben Laurie, reported by Anonymous <nobody@replay.com>]
1751
1752   *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
1753      [Ben Laurie]
1754
1755   *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
1756      parameters. This was causing a warning which killed off the Win32 compile.
1757      [Steve Henson]
1758
1759   *) Remove C++ style comments from crypto/bn/bn_local.h.
1760      [Neil Costigan <neil.costigan@celocom.com>]
1761
1762   *) The function OBJ_txt2nid was broken. It was supposed to return a nid
1763      based on a text string, looking up short and long names and finally
1764      "dot" format. The "dot" format stuff didn't work. Added new function
1765      OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
1766      OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
1767      OID is not part of the table.
1768      [Steve Henson]
1769
1770   *) Add prototypes to X509 lookup/verify methods, fixing a bug in
1771      X509_LOOKUP_by_alias().
1772      [Ben Laurie]
1773
1774   *) Sort openssl functions by name.
1775      [Ben Laurie]
1776
1777   *) Get the gendsa program working (hopefully) and add it to app list. Remove
1778      encryption from sample DSA keys (in case anyone is interested the password
1779      was "1234").
1780      [Steve Henson]
1781
1782   *) Make _all_ *_free functions accept a NULL pointer.
1783      [Frans Heymans <fheymans@isaserver.be>]
1784
1785   *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
1786      NULL pointers.
1787      [Anonymous <nobody@replay.com>]
1788
1789   *) s_server should send the CAfile as acceptable CAs, not its own cert.
1790      [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
1791
1792   *) Don't blow it for numeric -newkey arguments to apps/req.
1793      [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
1794
1795   *) Temp key "for export" tests were wrong in s3_srvr.c.
1796      [Anonymous <nobody@replay.com>]
1797
1798   *) Add prototype for temp key callback functions
1799      SSL_CTX_set_tmp_{rsa,dh}_callback().
1800      [Ben Laurie]
1801
1802   *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
1803      DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
1804      [Steve Henson]
1805
1806   *) X509_name_add_entry() freed the wrong thing after an error.
1807      [Arne Ansper <arne@ats.cyber.ee>]
1808
1809   *) rsa_eay.c would attempt to free a NULL context.
1810      [Arne Ansper <arne@ats.cyber.ee>]
1811
1812   *) BIO_s_socket() had a broken should_retry() on Windoze.
1813      [Arne Ansper <arne@ats.cyber.ee>]
1814
1815   *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
1816      [Arne Ansper <arne@ats.cyber.ee>]
1817
1818   *) Make sure the already existing X509_STORE->depth variable is initialized
1819      in X509_STORE_new(), but document the fact that this variable is still
1820      unused in the certificate verification process.
1821      [Ralf S. Engelschall]
1822
1823   *) Fix the various library and apps files to free up pkeys obtained from
1824      X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
1825      [Steve Henson]
1826
1827   *) Fix reference counting in X509_PUBKEY_get(). This makes
1828      demos/maurice/example2.c work, amongst others, probably.
1829      [Steve Henson and Ben Laurie]
1830
1831   *) First cut of a cleanup for apps/. First the `ssleay' program is now named
1832      `openssl' and second, the shortcut symlinks for the `openssl <command>'
1833      are no longer created. This way we have a single and consistent command
1834      line interface `openssl <command>', similar to `cvs <command>'.
1835      [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
1836
1837   *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
1838      BIT STRING wrapper always have zero unused bits.
1839      [Steve Henson]
1840
1841   *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
1842      [Steve Henson]
1843
1844   *) Make the top-level INSTALL documentation easier to understand.
1845      [Paul Sutton]
1846
1847   *) Makefiles updated to exit if an error occurs in a sub-directory
1848      make (including if user presses ^C) [Paul Sutton]
1849
1850   *) Make Montgomery context stuff explicit in RSA data structure.
1851      [Ben Laurie]
1852
1853   *) Fix build order of pem and err to allow for generated pem.h.
1854      [Ben Laurie]
1855
1856   *) Fix renumbering bug in X509_NAME_delete_entry().
1857      [Ben Laurie]
1858
1859   *) Enhanced the err-ins.pl script so it makes the error library number
1860      global and can add a library name. This is needed for external ASN1 and
1861      other error libraries.
1862      [Steve Henson]
1863
1864   *) Fixed sk_insert which never worked properly.
1865      [Steve Henson]
1866
1867   *) Fix ASN1 macros so they can handle indefinite length construted
1868      EXPLICIT tags. Some non standard certificates use these: they can now
1869      be read in.
1870      [Steve Henson]
1871
1872   *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
1873      into a single doc/ssleay.txt bundle. This way the information is still
1874      preserved but no longer messes up this directory. Now it's new room for
1875      the new set of documenation files.
1876      [Ralf S. Engelschall]
1877
1878   *) SETs were incorrectly DER encoded. This was a major pain, because they
1879      shared code with SEQUENCEs, which aren't coded the same. This means that
1880      almost everything to do with SETs or SEQUENCEs has either changed name or
1881      number of arguments.
1882      [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
1883
1884   *) Fix test data to work with the above.
1885      [Ben Laurie]
1886
1887   *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
1888      was already fixed by Eric for 0.9.1 it seems.
1889      [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
1890
1891   *) Autodetect FreeBSD3.
1892      [Ben Laurie]
1893
1894   *) Fix various bugs in Configure. This affects the following platforms:
1895      nextstep
1896      ncr-scde
1897      unixware-2.0
1898      unixware-2.0-pentium
1899      sco5-cc.
1900      [Ben Laurie]
1901
1902   *) Eliminate generated files from CVS. Reorder tests to regenerate files
1903      before they are needed.
1904      [Ben Laurie]
1905
1906   *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
1907      [Ben Laurie]
1908
1909
1910  Changes between 0.9.1b and 0.9.1c  [23-Dec-1998]
1911
1912   *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
1913      changed SSLeay to OpenSSL in version strings.
1914      [Ralf S. Engelschall]
1915
1916   *) Some fixups to the top-level documents.
1917      [Paul Sutton]
1918
1919   *) Fixed the nasty bug where rsaref.h was not found under compile-time
1920      because the symlink to include/ was missing.
1921      [Ralf S. Engelschall]
1922
1923   *) Incorporated the popular no-RSA/DSA-only patches
1924      which allow to compile a RSA-free SSLeay.
1925      [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
1926
1927   *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
1928      when "ssleay" is still not found.
1929      [Ralf S. Engelschall]
1930
1931   *) Added more platforms to Configure: Cray T3E, HPUX 11,
1932      [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
1933
1934   *) Updated the README file.
1935      [Ralf S. Engelschall]
1936
1937   *) Added various .cvsignore files in the CVS repository subdirs
1938      to make a "cvs update" really silent.
1939      [Ralf S. Engelschall]
1940
1941   *) Recompiled the error-definition header files and added
1942      missing symbols to the Win32 linker tables.
1943      [Ralf S. Engelschall]
1944
1945   *) Cleaned up the top-level documents;
1946      o new files: CHANGES and LICENSE
1947      o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
1948      o merged COPYRIGHT into LICENSE
1949      o removed obsolete TODO file
1950      o renamed MICROSOFT to INSTALL.W32
1951      [Ralf S. Engelschall]
1952
1953   *) Removed dummy files from the 0.9.1b source tree:
1954      crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
1955      crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
1956      crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
1957      crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
1958      util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
1959      [Ralf S. Engelschall]
1960
1961   *) Added various platform portability fixes.
1962      [Mark J. Cox]
1963
1964   *) The Genesis of the OpenSSL rpject:
1965      We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
1966      Young and Tim J. Hudson created while they were working for C2Net until
1967      summer 1998.
1968      [The OpenSSL Project]
1969
1970
1971  Changes between 0.9.0b and 0.9.1b  [not released]
1972
1973   *) Updated a few CA certificates under certs/
1974      [Eric A. Young]
1975
1976   *) Changed some BIGNUM api stuff.
1977      [Eric A. Young]
1978
1979   *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
1980      DGUX x86, Linux Alpha, etc.
1981      [Eric A. Young]
1982
1983   *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
1984      RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
1985      available).
1986      [Eric A. Young]
1987
1988   *) Add -strparse option to asn1pars program which parses nested
1989      binary structures
1990      [Dr Stephen Henson <shenson@bigfoot.com>]
1991
1992   *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
1993      [Eric A. Young]
1994
1995   *) DSA fix for "ca" program.
1996      [Eric A. Young]
1997
1998   *) Added "-genkey" option to "dsaparam" program.
1999      [Eric A. Young]
2000
2001   *) Added RIPE MD160 (rmd160) message digest.
2002      [Eric A. Young]
2003
2004   *) Added -a (all) option to "ssleay version" command.
2005      [Eric A. Young]
2006
2007   *) Added PLATFORM define which is the id given to Configure.
2008      [Eric A. Young]
2009
2010   *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
2011      [Eric A. Young]
2012
2013   *) Extended the ASN.1 parser routines.
2014      [Eric A. Young]
2015
2016   *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
2017      [Eric A. Young]
2018
2019   *) Added a BN_CTX to the BN library.
2020      [Eric A. Young]
2021
2022   *) Fixed the weak key values in DES library
2023      [Eric A. Young]
2024
2025   *) Changed API in EVP library for cipher aliases.
2026      [Eric A. Young]
2027
2028   *) Added support for RC2/64bit cipher.
2029      [Eric A. Young]
2030
2031   *) Converted the lhash library to the crypto/mem.c functions.
2032      [Eric A. Young]
2033
2034   *) Added more recognized ASN.1 object ids.
2035      [Eric A. Young]
2036
2037   *) Added more RSA padding checks for SSL/TLS.
2038      [Eric A. Young]
2039
2040   *) Added BIO proxy/filter functionality.
2041      [Eric A. Young]
2042
2043   *) Added extra_certs to SSL_CTX which can be used
2044      send extra CA certificates to the client in the CA cert chain sending
2045      process. It can be configured with SSL_CTX_add_extra_chain_cert().
2046      [Eric A. Young]
2047
2048   *) Now Fortezza is denied in the authentication phase because
2049      this is key exchange mechanism is not supported by SSLeay at all.
2050      [Eric A. Young]
2051
2052   *) Additional PKCS1 checks.
2053      [Eric A. Young]
2054
2055   *) Support the string "TLSv1" for all TLS v1 ciphers.
2056      [Eric A. Young]
2057
2058   *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
2059      ex_data index of the SSL context in the X509_STORE_CTX ex_data.
2060      [Eric A. Young]
2061
2062   *) Fixed a few memory leaks.
2063      [Eric A. Young]
2064
2065   *) Fixed various code and comment typos.
2066      [Eric A. Young]
2067
2068   *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
2069      bytes sent in the client random.
2070      [Edward Bishop <ebishop@spyglass.com>]
2071