5 This file gives a brief overview of the major changes between each OpenSSL
6 release. For more details please read the CHANGES file.
8 Major changes between OpenSSL 1.1.1 and OpenSSL 3.0.0 [under development]
10 o Added OSSL_SERIALIZER, a generic serializer API.
11 o Added error raising macros, ERR_raise() and ERR_raise_data().
12 o Deprecated ERR_put_error().
13 o Added OSSL_PROVIDER_available(), to check provider availibility.
14 o Added 'openssl mac' that uses the EVP_MAC API.
15 o Added 'openssl kdf' that uses the EVP_KDF API.
16 o Add OPENSSL_info() and 'openssl info' to get built-in data.
17 o Add support for enabling instrumentation through trace and debug
19 o Changed our version number scheme and set the next major release to
21 o Added EVP_MAC, an EVP layer MAC API, and a generic EVP_PKEY to EVP_MAC
23 o Removed the heartbeat message in DTLS feature.
24 o Added EVP_KDF, an EVP layer KDF API, and a generic EVP_PKEY to EVP_KDF
27 Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]
29 o Timing vulnerability in DSA signature generation (CVE-2018-0734)
30 o Timing vulnerability in ECDSA signature generation (CVE-2018-0735)
32 Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]
34 o Support for TLSv1.3 added (see https://wiki.openssl.org/index.php/TLS1.3
35 for further important information). The TLSv1.3 implementation includes:
36 o Fully compliant implementation of RFC8446 (TLSv1.3) on by default
38 o Post-handshake authentication and key update
39 o Middlebox Compatibility Mode
41 o Support for all five RFC8446 ciphersuites
42 o RSA-PSS signature algorithms (backported to TLSv1.2)
43 o Configurable session ticket support
44 o Stateless server support
45 o Rewrite of the packet construction code for "safer" packet handling
46 o Rewrite of the extension handling code
47 o Complete rewrite of the OpenSSL random number generator to introduce the
48 following capabilities
49 o The default RAND method now utilizes an AES-CTR DRBG according to
50 NIST standard SP 800-90Ar1.
51 o Support for multiple DRBG instances with seed chaining.
52 o There is a public and private DRBG instance.
53 o The DRBG instances are fork-safe.
54 o Keep all global DRBG instances on the secure heap if it is enabled.
55 o The public and private DRBG instance are per thread for lock free
57 o Support for various new cryptographic algorithms including:
59 o SHA512/224 and SHA512/256
60 o EdDSA (both Ed25519 and Ed448) including X509 and TLS support
61 o X448 (adding to the existing X25519 support in 1.1.0)
67 o ARIA (including TLS support)
68 o Significant Side-Channel attack security improvements
69 o Add a new ClientHello callback to provide the ability to adjust the SSL
70 object at an early stage.
71 o Add 'Maximum Fragment Length' TLS extension negotiation and support
72 o A new STORE module, which implements a uniform and URI based reader of
73 stores that can contain keys, certificates, CRLs and numerous other
75 o Move the display of configuration data to configdata.pm.
76 o Allow GNU style "make variables" to be used with Configure.
77 o Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
78 o Rewrite of devcrypto engine
80 Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [under development]
82 o Client DoS due to large DH parameter (CVE-2018-0732)
83 o Cache timing vulnerability in RSA Key Generation (CVE-2018-0737)
85 Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [under development]
87 o Constructed ASN.1 types with a recursive definition could exceed the
89 o Incorrect CRYPTO_memcmp on HP-UX PA-RISC (CVE-2018-0733)
90 o rsaz_1024_mul_avx2 overflow bug on x86_64 (CVE-2017-3738)
92 Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]
94 o bn_sqrx8x_internal carry bug on x86_64 (CVE-2017-3736)
95 o Malformed X.509 IPAddressFamily could cause OOB read (CVE-2017-3735)
97 Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]
99 o config now recognises 64-bit mingw and chooses mingw64 instead of mingw
101 Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]
103 o Encrypt-Then-Mac renegotiation crash (CVE-2017-3733)
105 Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]
107 o Truncated packet could crash via OOB read (CVE-2017-3731)
108 o Bad (EC)DHE parameters cause a client crash (CVE-2017-3730)
109 o BN_mod_exp may produce incorrect results on x86_64 (CVE-2017-3732)
111 Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]
113 o ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054)
114 o CMS Null dereference (CVE-2016-7053)
115 o Montgomery multiplication may produce incorrect results (CVE-2016-7055)
117 Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]
119 o Fix Use After Free for large message sizes (CVE-2016-6309)
121 Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]
123 o OCSP Status Request extension unbounded memory growth (CVE-2016-6304)
124 o SSL_peek() hang on empty record (CVE-2016-6305)
125 o Excessive allocation of memory in tls_get_message_header()
127 o Excessive allocation of memory in dtls1_preprocess_fragment()
130 Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]
132 o Copyright text was shrunk to a boilerplate that points to the license
133 o "shared" builds are now the default when possible
134 o Added support for "pipelining"
135 o Added the AFALG engine
136 o New threading API implemented
137 o Support for ChaCha20 and Poly1305 added to libcrypto and libssl
138 o Support for extended master secret
140 o Reworked test suite, now based on perl, Test::Harness and Test::More
141 o *Most* libcrypto and libssl public structures were made opaque,
143 BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
144 DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
145 BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
146 EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
147 X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
148 X509_LOOKUP, X509_LOOKUP_METHOD
149 o libssl internal structures made opaque
150 o SSLv2 support removed
151 o Kerberos ciphersuite support removed
152 o RC4 removed from DEFAULT ciphersuites in libssl
153 o 40 and 56 bit cipher support removed from libssl
154 o All public header files moved to include/openssl, no more symlinking
155 o SSL/TLS state machine, version negotiation and record layer rewritten
156 o EC revision: now operations use new EC_KEY_METHOD.
157 o Support for OCB mode added to libcrypto
158 o Support for asynchronous crypto operations added to libcrypto and libssl
159 o Deprecated interfaces can now be disabled at build time either
160 relative to the latest release via the "no-deprecated" Configure
161 argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
162 o Application software can be compiled with -DOPENSSL_API_COMPAT=version
163 to ensure that features deprecated in that version are not exposed.
164 o Support for RFC6698/RFC7671 DANE TLSA peer authentication
165 o Change of Configure to use --prefix as the main installation
166 directory location rather than --openssldir. The latter becomes
167 the directory for certs, private key and openssl.cnf exclusively.
168 o Reworked BIO networking library, with full support for IPv6.
169 o New "unified" build system
170 o New security levels
171 o Support for scrypt algorithm
173 o Extended SSL_CONF support using configuration files
174 o KDF algorithm support. Implement TLS PRF as a KDF.
175 o Support for Certificate Transparency
178 Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]
180 o Prevent padding oracle in AES-NI CBC MAC check (CVE-2016-2107)
181 o Fix EVP_EncodeUpdate overflow (CVE-2016-2105)
182 o Fix EVP_EncryptUpdate overflow (CVE-2016-2106)
183 o Prevent ASN.1 BIO excessive memory allocation (CVE-2016-2109)
184 o EBCDIC overread (CVE-2016-2176)
185 o Modify behavior of ALPN to invoke callback after SNI/servername
186 callback, such that updates to the SSL_CTX affect ALPN.
187 o Remove LOW from the DEFAULT cipher list. This removes singles DES from
189 o Only remove the SSLv2 methods with the no-ssl2-method option.
191 Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]
193 o Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
194 o Disable SSLv2 default build, default negotiation and weak ciphers
196 o Fix a double-free in DSA code (CVE-2016-0705)
197 o Disable SRP fake user seed to address a server memory leak
199 o Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
201 o Fix memory issues in BIO_*printf functions (CVE-2016-0799)
202 o Fix side channel attack on modular exponentiation (CVE-2016-0702)
204 Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]
206 o DH small subgroups (CVE-2016-0701)
207 o SSLv2 doesn't block disabled ciphers (CVE-2015-3197)
209 Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]
211 o BN_mod_exp may produce incorrect results on x86_64 (CVE-2015-3193)
212 o Certificate verify crash with missing PSS parameter (CVE-2015-3194)
213 o X509_ATTRIBUTE memory leak (CVE-2015-3195)
214 o Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
215 o In DSA_generate_parameters_ex, if the provided seed is too short,
218 Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]
220 o Alternate chains certificate forgery (CVE-2015-1793)
221 o Race condition handling PSK identify hint (CVE-2015-3196)
223 Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]
225 o Fix HMAC ABI incompatibility
227 Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]
229 o Malformed ECParameters causes infinite loop (CVE-2015-1788)
230 o Exploitable out-of-bounds read in X509_cmp_time (CVE-2015-1789)
231 o PKCS7 crash with missing EnvelopedContent (CVE-2015-1790)
232 o CMS verify infinite loop with unknown hash function (CVE-2015-1792)
233 o Race condition handling NewSessionTicket (CVE-2015-1791)
235 Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]
237 o OpenSSL 1.0.2 ClientHello sigalgs DoS fix (CVE-2015-0291)
238 o Multiblock corrupted pointer fix (CVE-2015-0290)
239 o Segmentation fault in DTLSv1_listen fix (CVE-2015-0207)
240 o Segmentation fault in ASN1_TYPE_cmp fix (CVE-2015-0286)
241 o Segmentation fault for invalid PSS parameters fix (CVE-2015-0208)
242 o ASN.1 structure reuse memory corruption fix (CVE-2015-0287)
243 o PKCS7 NULL pointer dereferences fix (CVE-2015-0289)
244 o DoS via reachable assert in SSLv2 servers fix (CVE-2015-0293)
245 o Empty CKE with client auth and DHE fix (CVE-2015-1787)
246 o Handshake with unseeded PRNG fix (CVE-2015-0285)
247 o Use After Free following d2i_ECPrivatekey error fix (CVE-2015-0209)
248 o X509_to_X509_REQ NULL pointer deref fix (CVE-2015-0288)
249 o Removed the export ciphers from the DEFAULT ciphers
251 Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]:
253 o Suite B support for TLS 1.2 and DTLS 1.2
254 o Support for DTLS 1.2
255 o TLS automatic EC curve selection.
256 o API to set TLS supported signature algorithms and curves
257 o SSL_CONF configuration API.
258 o TLS Brainpool support.
260 o CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.
262 Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]
264 o Build fixes for the Windows and OpenVMS platforms
266 Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]
268 o Fix for CVE-2014-3571
269 o Fix for CVE-2015-0206
270 o Fix for CVE-2014-3569
271 o Fix for CVE-2014-3572
272 o Fix for CVE-2015-0204
273 o Fix for CVE-2015-0205
274 o Fix for CVE-2014-8275
275 o Fix for CVE-2014-3570
277 Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]
279 o Fix for CVE-2014-3513
280 o Fix for CVE-2014-3567
281 o Mitigation for CVE-2014-3566 (SSL protocol vulnerability)
282 o Fix for CVE-2014-3568
284 Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]
286 o Fix for CVE-2014-3512
287 o Fix for CVE-2014-3511
288 o Fix for CVE-2014-3510
289 o Fix for CVE-2014-3507
290 o Fix for CVE-2014-3506
291 o Fix for CVE-2014-3505
292 o Fix for CVE-2014-3509
293 o Fix for CVE-2014-5139
294 o Fix for CVE-2014-3508
296 Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]
298 o Fix for CVE-2014-0224
299 o Fix for CVE-2014-0221
300 o Fix for CVE-2014-0198
301 o Fix for CVE-2014-0195
302 o Fix for CVE-2014-3470
303 o Fix for CVE-2010-5298
305 Major changes between OpenSSL 1.0.1f and OpenSSL 1.0.1g [7 Apr 2014]
307 o Fix for CVE-2014-0160
308 o Add TLS padding extension workaround for broken servers.
309 o Fix for CVE-2014-0076
311 Major changes between OpenSSL 1.0.1e and OpenSSL 1.0.1f [6 Jan 2014]
313 o Don't include gmt_unix_time in TLS server and client random values
314 o Fix for TLS record tampering bug CVE-2013-4353
315 o Fix for TLS version checking bug CVE-2013-6449
316 o Fix for DTLS retransmission bug CVE-2013-6450
318 Major changes between OpenSSL 1.0.1d and OpenSSL 1.0.1e [11 Feb 2013]:
320 o Corrected fix for CVE-2013-0169
322 Major changes between OpenSSL 1.0.1c and OpenSSL 1.0.1d [4 Feb 2013]:
324 o Fix renegotiation in TLS 1.1, 1.2 by using the correct TLS version.
325 o Include the fips configuration module.
326 o Fix OCSP bad key DoS attack CVE-2013-0166
327 o Fix for SSL/TLS/DTLS CBC plaintext recovery attack CVE-2013-0169
328 o Fix for TLS AESNI record handling flaw CVE-2012-2686
330 Major changes between OpenSSL 1.0.1b and OpenSSL 1.0.1c [10 May 2012]:
332 o Fix TLS/DTLS record length checking bug CVE-2012-2333
333 o Don't attempt to use non-FIPS composite ciphers in FIPS mode.
335 Major changes between OpenSSL 1.0.1a and OpenSSL 1.0.1b [26 Apr 2012]:
337 o Fix compilation error on non-x86 platforms.
338 o Make FIPS capable OpenSSL ciphers work in non-FIPS mode.
339 o Fix SSL_OP_NO_TLSv1_1 clash with SSL_OP_ALL in OpenSSL 1.0.0
341 Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a [19 Apr 2012]:
343 o Fix for ASN1 overflow bug CVE-2012-2110
344 o Workarounds for some servers that hang on long client hellos.
345 o Fix SEGV in AES code.
347 Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1 [14 Mar 2012]:
349 o TLS/DTLS heartbeat support.
351 o RFC 5705 TLS key material exporter.
352 o RFC 5764 DTLS-SRTP negotiation.
353 o Next Protocol Negotiation.
354 o PSS signatures in certificates, requests and CRLs.
355 o Support for password based recipient info for CMS.
356 o Support TLS v1.2 and TLS v1.1.
357 o Preliminary FIPS capability for unvalidated 2.0 FIPS module.
360 Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h [12 Mar 2012]:
362 o Fix for CMS/PKCS#7 MMA CVE-2012-0884
363 o Corrected fix for CVE-2011-4619
364 o Various DTLS fixes.
366 Major changes between OpenSSL 1.0.0f and OpenSSL 1.0.0g [18 Jan 2012]:
368 o Fix for DTLS DoS issue CVE-2012-0050
370 Major changes between OpenSSL 1.0.0e and OpenSSL 1.0.0f [4 Jan 2012]:
372 o Fix for DTLS plaintext recovery attack CVE-2011-4108
373 o Clear block padding bytes of SSL 3.0 records CVE-2011-4576
374 o Only allow one SGC handshake restart for SSL/TLS CVE-2011-4619
375 o Check parameters are not NULL in GOST ENGINE CVE-2012-0027
376 o Check for malformed RFC3779 data CVE-2011-4577
378 Major changes between OpenSSL 1.0.0d and OpenSSL 1.0.0e [6 Sep 2011]:
380 o Fix for CRL vulnerability issue CVE-2011-3207
381 o Fix for ECDH crashes CVE-2011-3210
382 o Protection against EC timing attacks.
383 o Support ECDH ciphersuites for certificates using SHA2 algorithms.
384 o Various DTLS fixes.
386 Major changes between OpenSSL 1.0.0c and OpenSSL 1.0.0d [8 Feb 2011]:
388 o Fix for security issue CVE-2011-0014
390 Major changes between OpenSSL 1.0.0b and OpenSSL 1.0.0c [2 Dec 2010]:
392 o Fix for security issue CVE-2010-4180
393 o Fix for CVE-2010-4252
394 o Fix mishandling of absent EC point format extension.
395 o Fix various platform compilation issues.
396 o Corrected fix for security issue CVE-2010-3864.
398 Major changes between OpenSSL 1.0.0a and OpenSSL 1.0.0b [16 Nov 2010]:
400 o Fix for security issue CVE-2010-3864.
401 o Fix for CVE-2010-2939
402 o Fix WIN32 build system for GOST ENGINE.
404 Major changes between OpenSSL 1.0.0 and OpenSSL 1.0.0a [1 Jun 2010]:
406 o Fix for security issue CVE-2010-1633.
407 o GOST MAC and CFB fixes.
409 Major changes between OpenSSL 0.9.8n and OpenSSL 1.0.0 [29 Mar 2010]:
411 o RFC3280 path validation: sufficient to process PKITS tests.
412 o Integrated support for PVK files and keyblobs.
413 o Change default private key format to PKCS#8.
414 o CMS support: able to process all examples in RFC4134
415 o Streaming ASN1 encode support for PKCS#7 and CMS.
416 o Multiple signer and signer add support for PKCS#7 and CMS.
417 o ASN1 printing support.
418 o Whirlpool hash algorithm added.
419 o RFC3161 time stamp support.
420 o New generalised public key API supporting ENGINE based algorithms.
421 o New generalised public key API utilities.
422 o New ENGINE supporting GOST algorithms.
423 o SSL/TLS GOST ciphersuite support.
424 o PKCS#7 and CMS GOST support.
425 o RFC4279 PSK ciphersuite support.
426 o Supported points format extension for ECC ciphersuites.
427 o ecdsa-with-SHA224/256/384/512 signature types.
428 o dsa-with-SHA224 and dsa-with-SHA256 signature types.
429 o Opaque PRF Input TLS extension support.
430 o Updated time routines to avoid OS limitations.
432 Major changes between OpenSSL 0.9.8m and OpenSSL 0.9.8n [24 Mar 2010]:
434 o CFB cipher definition fixes.
435 o Fix security issues CVE-2010-0740 and CVE-2010-0433.
437 Major changes between OpenSSL 0.9.8l and OpenSSL 0.9.8m [25 Feb 2010]:
439 o Cipher definition fixes.
440 o Workaround for slow RAND_poll() on some WIN32 versions.
441 o Remove MD2 from algorithm tables.
442 o SPKAC handling fixes.
443 o Support for RFC5746 TLS renegotiation extension.
444 o Compression memory leak fixed.
445 o Compression session resumption fixed.
446 o Ticket and SNI coexistence fixes.
447 o Many fixes to DTLS handling.
449 Major changes between OpenSSL 0.9.8k and OpenSSL 0.9.8l [5 Nov 2009]:
451 o Temporary work around for CVE-2009-3555: disable renegotiation.
453 Major changes between OpenSSL 0.9.8j and OpenSSL 0.9.8k [25 Mar 2009]:
455 o Fix various build issues.
456 o Fix security issues (CVE-2009-0590, CVE-2009-0591, CVE-2009-0789)
458 Major changes between OpenSSL 0.9.8i and OpenSSL 0.9.8j [7 Jan 2009]:
460 o Fix security issue (CVE-2008-5077)
461 o Merge FIPS 140-2 branch code.
463 Major changes between OpenSSL 0.9.8g and OpenSSL 0.9.8h [28 May 2008]:
465 o CryptoAPI ENGINE support.
466 o Various precautionary measures.
467 o Fix for bugs affecting certificate request creation.
468 o Support for local machine keyset attribute in PKCS#12 files.
470 Major changes between OpenSSL 0.9.8f and OpenSSL 0.9.8g [19 Oct 2007]:
472 o Backport of CMS functionality to 0.9.8.
473 o Fixes for bugs introduced with 0.9.8f.
475 Major changes between OpenSSL 0.9.8e and OpenSSL 0.9.8f [11 Oct 2007]:
477 o Add gcc 4.2 support.
478 o Add support for AES and SSE2 assembly language optimization
480 o Support for RFC4507bis and server name extensions if explicitly
481 selected at compile time.
483 o RFC4507bis support.
484 o TLS Extensions support.
486 Major changes between OpenSSL 0.9.8d and OpenSSL 0.9.8e [23 Feb 2007]:
488 o Various ciphersuite selection fixes.
491 Major changes between OpenSSL 0.9.8c and OpenSSL 0.9.8d [28 Sep 2006]:
493 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
494 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
495 o Changes to ciphersuite selection algorithm
497 Major changes between OpenSSL 0.9.8b and OpenSSL 0.9.8c [5 Sep 2006]:
499 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
500 o New cipher Camellia
502 Major changes between OpenSSL 0.9.8a and OpenSSL 0.9.8b [4 May 2006]:
504 o Cipher string fixes.
505 o Fixes for VC++ 2005.
506 o Updated ECC cipher suite support.
507 o New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free().
508 o Zlib compression usage fixes.
509 o Built in dynamic engine compilation support on Win32.
510 o Fixes auto dynamic engine loading in Win32.
512 Major changes between OpenSSL 0.9.8 and OpenSSL 0.9.8a [11 Oct 2005]:
514 o Fix potential SSL 2.0 rollback, CVE-2005-2969
515 o Extended Windows CE support
517 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.8 [5 Jul 2005]:
519 o Major work on the BIGNUM library for higher efficiency and to
520 make operations more streamlined and less contradictory. This
521 is the result of a major audit of the BIGNUM library.
522 o Addition of BIGNUM functions for fields GF(2^m) and NIST
523 curves, to support the Elliptic Crypto functions.
524 o Major work on Elliptic Crypto; ECDH and ECDSA added, including
525 the use through EVP, X509 and ENGINE.
526 o New ASN.1 mini-compiler that's usable through the OpenSSL
528 o Added support for ASN.1 indefinite length constructed encoding.
529 o New PKCS#12 'medium level' API to manipulate PKCS#12 files.
530 o Complete rework of shared library construction and linking
531 programs with shared or static libraries, through a separate
533 o Rework of the passing of parameters from one Makefile to another.
534 o Changed ENGINE framework to load dynamic engine modules
535 automatically from specifically given directories.
536 o New structure and ASN.1 functions for CertificatePair.
537 o Changed the ZLIB compression method to be stateful.
538 o Changed the key-generation and primality testing "progress"
539 mechanism to take a structure that contains the ticker
540 function and an argument.
541 o New engine module: GMP (performs private key exponentiation).
542 o New engine module: VIA PadLOck ACE extension in VIA C3
544 o Added support for IPv6 addresses in certificate extensions.
545 See RFC 1884, section 2.2.
546 o Added support for certificate policy mappings, policy
547 constraints and name constraints.
548 o Added support for multi-valued AVAs in the OpenSSL
550 o Added support for multiple certificates with the same subject
551 in the 'openssl ca' index file.
552 o Make it possible to create self-signed certificates using
553 'openssl ca -selfsign'.
554 o Make it possible to generate a serial number file with
555 'openssl ca -create_serial'.
556 o New binary search functions with extended functionality.
558 o New STORE structure and library to provide an interface to all
559 sorts of data repositories. Supports storage of public and
560 private keys, certificates, CRLs, numbers and arbitrary blobs.
561 This library is unfortunately unfinished and unused within
563 o New control functions for the error stack.
564 o Changed the PKCS#7 library to support one-pass S/MIME
566 o Added the possibility to compile without old deprecated
567 functionality with the OPENSSL_NO_DEPRECATED macro or the
568 'no-deprecated' argument to the config and Configure scripts.
569 o Constification of all ASN.1 conversion functions, and other
571 o Improved platform support for PowerPC.
572 o New FIPS 180-2 algorithms (SHA-224, -256, -384 and -512).
573 o New X509_VERIFY_PARAM structure to support parameterisation
574 of X.509 path validation.
575 o Major overhaul of RC4 performance on Intel P4, IA-64 and
577 o Changed the Configure script to have some algorithms disabled
578 by default. Those can be explicitly enabled with the new
579 argument form 'enable-xxx'.
580 o Change the default digest in 'openssl' commands from MD5 to
582 o Added support for DTLS.
583 o New BIGNUM blinding.
584 o Added support for the RSA-PSS encryption scheme
585 o Added support for the RSA X.931 padding.
586 o Added support for BSD sockets on NetWare.
587 o Added support for files larger than 2GB.
588 o Added initial support for Win64.
589 o Added alternate pkg-config files.
591 Major changes between OpenSSL 0.9.7l and OpenSSL 0.9.7m [23 Feb 2007]:
593 o FIPS 1.1.1 module linking.
594 o Various ciphersuite selection fixes.
596 Major changes between OpenSSL 0.9.7k and OpenSSL 0.9.7l [28 Sep 2006]:
598 o Introduce limits to prevent malicious key DoS (CVE-2006-2940)
599 o Fix security issues (CVE-2006-2937, CVE-2006-3737, CVE-2006-4343)
601 Major changes between OpenSSL 0.9.7j and OpenSSL 0.9.7k [5 Sep 2006]:
603 o Fix Daniel Bleichenbacher forged signature attack, CVE-2006-4339
605 Major changes between OpenSSL 0.9.7i and OpenSSL 0.9.7j [4 May 2006]:
607 o Visual C++ 2005 fixes.
608 o Update Windows build system for FIPS.
610 Major changes between OpenSSL 0.9.7h and OpenSSL 0.9.7i [14 Oct 2005]:
612 o Give EVP_MAX_MD_SIZE its old value, except for a FIPS build.
614 Major changes between OpenSSL 0.9.7g and OpenSSL 0.9.7h [11 Oct 2005]:
616 o Fix SSL 2.0 Rollback, CVE-2005-2969
617 o Allow use of fixed-length exponent on DSA signing
618 o Default fixed-window RSA, DSA, DH private-key operations
620 Major changes between OpenSSL 0.9.7f and OpenSSL 0.9.7g [11 Apr 2005]:
622 o More compilation issues fixed.
623 o Adaptation to more modern Kerberos API.
624 o Enhanced or corrected configuration for Solaris64, Mingw and Cygwin.
625 o Enhanced x86_64 assembler BIGNUM module.
626 o More constification.
627 o Added processing of proxy certificates (RFC 3820).
629 Major changes between OpenSSL 0.9.7e and OpenSSL 0.9.7f [22 Mar 2005]:
631 o Several compilation issues fixed.
632 o Many memory allocation failure checks added.
633 o Improved comparison of X509 Name type.
634 o Mandatory basic checks on certificates.
635 o Performance improvements.
637 Major changes between OpenSSL 0.9.7d and OpenSSL 0.9.7e [25 Oct 2004]:
639 o Fix race condition in CRL checking code.
640 o Fixes to PKCS#7 (S/MIME) code.
642 Major changes between OpenSSL 0.9.7c and OpenSSL 0.9.7d [17 Mar 2004]:
644 o Security: Fix Kerberos ciphersuite SSL/TLS handshaking bug
645 o Security: Fix null-pointer assignment in do_change_cipher_spec()
646 o Allow multiple active certificates with same subject in CA index
647 o Multiple X509 verification fixes
648 o Speed up HMAC and other operations
650 Major changes between OpenSSL 0.9.7b and OpenSSL 0.9.7c [30 Sep 2003]:
652 o Security: fix various ASN1 parsing bugs.
653 o New -ignore_err option to OCSP utility.
654 o Various interop and bug fixes in S/MIME code.
655 o SSL/TLS protocol fix for unrequested client certificates.
657 Major changes between OpenSSL 0.9.7a and OpenSSL 0.9.7b [10 Apr 2003]:
659 o Security: counter the Klima-Pokorny-Rosa extension of
660 Bleichbacher's attack
661 o Security: make RSA blinding default.
662 o Configuration: Irix fixes, AIX fixes, better mingw support.
663 o Support for new platforms: linux-ia64-ecc.
664 o Build: shared library support fixes.
665 o ASN.1: treat domainComponent correctly.
666 o Documentation: fixes and additions.
668 Major changes between OpenSSL 0.9.7 and OpenSSL 0.9.7a [19 Feb 2003]:
670 o Security: Important security related bugfixes.
671 o Enhanced compatibility with MIT Kerberos.
672 o Can be built without the ENGINE framework.
673 o IA32 assembler enhancements.
674 o Support for new platforms: FreeBSD/IA64 and FreeBSD/Sparc64.
675 o Configuration: the no-err option now works properly.
676 o SSL/TLS: now handles manual certificate chain building.
677 o SSL/TLS: certain session ID malfunctions corrected.
679 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.7 [30 Dec 2002]:
681 o New library section OCSP.
682 o Complete rewrite of ASN1 code.
683 o CRL checking in verify code and openssl utility.
684 o Extension copying in 'ca' utility.
685 o Flexible display options in 'ca' utility.
686 o Provisional support for international characters with UTF8.
687 o Support for external crypto devices ('engine') is no longer
688 a separate distribution.
689 o New elliptic curve library section.
690 o New AES (Rijndael) library section.
691 o Support for new platforms: Windows CE, Tandem OSS, A/UX, AIX 64-bit,
692 Linux x86_64, Linux 64-bit on Sparc v9
693 o Extended support for some platforms: VxWorks
694 o Enhanced support for shared libraries.
695 o Now only builds PIC code when shared library support is requested.
696 o Support for pkg-config.
697 o Lots of new manuals.
698 o Makes symbolic links to or copies of manuals to cover all described
700 o Change DES API to clean up the namespace (some applications link also
701 against libdes providing similar functions having the same name).
702 Provide macros for backward compatibility (will be removed in the
704 o Unify handling of cryptographic algorithms (software and engine)
705 to be available via EVP routines for asymmetric and symmetric ciphers.
706 o NCONF: new configuration handling routines.
707 o Change API to use more 'const' modifiers to improve error checking
709 o Finally remove references to RSAref.
710 o Reworked parts of the BIGNUM code.
711 o Support for new engines: Broadcom ubsec, Accelerated Encryption
712 Processing, IBM 4758.
713 o A few new engines added in the demos area.
714 o Extended and corrected OID (object identifier) table.
715 o PRNG: query at more locations for a random device, automatic query for
716 EGD style random sources at several locations.
717 o SSL/TLS: allow optional cipher choice according to server's preference.
718 o SSL/TLS: allow server to explicitly set new session ids.
719 o SSL/TLS: support Kerberos cipher suites (RFC2712).
720 Only supports MIT Kerberos for now.
721 o SSL/TLS: allow more precise control of renegotiations and sessions.
722 o SSL/TLS: add callback to retrieve SSL/TLS messages.
723 o SSL/TLS: support AES cipher suites (RFC3268).
725 Major changes between OpenSSL 0.9.6j and OpenSSL 0.9.6k [30 Sep 2003]:
727 o Security: fix various ASN1 parsing bugs.
728 o SSL/TLS protocol fix for unrequested client certificates.
730 Major changes between OpenSSL 0.9.6i and OpenSSL 0.9.6j [10 Apr 2003]:
732 o Security: counter the Klima-Pokorny-Rosa extension of
733 Bleichbacher's attack
734 o Security: make RSA blinding default.
735 o Build: shared library support fixes.
737 Major changes between OpenSSL 0.9.6h and OpenSSL 0.9.6i [19 Feb 2003]:
739 o Important security related bugfixes.
741 Major changes between OpenSSL 0.9.6g and OpenSSL 0.9.6h [5 Dec 2002]:
743 o New configuration targets for Tandem OSS and A/UX.
744 o New OIDs for Microsoft attributes.
745 o Better handling of SSL session caching.
746 o Better comparison of distinguished names.
747 o Better handling of shared libraries in a mixed GNU/non-GNU environment.
748 o Support assembler code with Borland C.
749 o Fixes for length problems.
750 o Fixes for uninitialised variables.
751 o Fixes for memory leaks, some unusual crashes and some race conditions.
752 o Fixes for smaller building problems.
753 o Updates of manuals, FAQ and other instructive documents.
755 Major changes between OpenSSL 0.9.6f and OpenSSL 0.9.6g [9 Aug 2002]:
757 o Important building fixes on Unix.
759 Major changes between OpenSSL 0.9.6e and OpenSSL 0.9.6f [8 Aug 2002]:
761 o Various important bugfixes.
763 Major changes between OpenSSL 0.9.6d and OpenSSL 0.9.6e [30 Jul 2002]:
765 o Important security related bugfixes.
766 o Various SSL/TLS library bugfixes.
768 Major changes between OpenSSL 0.9.6c and OpenSSL 0.9.6d [9 May 2002]:
770 o Various SSL/TLS library bugfixes.
771 o Fix DH parameter generation for 'non-standard' generators.
773 Major changes between OpenSSL 0.9.6b and OpenSSL 0.9.6c [21 Dec 2001]:
775 o Various SSL/TLS library bugfixes.
776 o BIGNUM library fixes.
777 o RSA OAEP and random number generation fixes.
778 o Object identifiers corrected and added.
779 o Add assembler BN routines for IA64.
780 o Add support for OS/390 Unix, UnixWare with gcc, OpenUNIX 8,
781 MIPS Linux; shared library support for Irix, HP-UX.
782 o Add crypto accelerator support for AEP, Baltimore SureWare,
783 Broadcom and Cryptographic Appliance's keyserver
784 [in 0.9.6c-engine release].
786 Major changes between OpenSSL 0.9.6a and OpenSSL 0.9.6b [9 Jul 2001]:
788 o Security fix: PRNG improvements.
789 o Security fix: RSA OAEP check.
790 o Security fix: Reinsert and fix countermeasure to Bleichbacher's
792 o MIPS bug fix in BIGNUM.
793 o Bug fix in "openssl enc".
794 o Bug fix in X.509 printing routine.
795 o Bug fix in DSA verification routine and DSA S/MIME verification.
796 o Bug fix to make PRNG thread-safe.
797 o Bug fix in RAND_file_name().
798 o Bug fix in compatibility mode trust settings.
799 o Bug fix in blowfish EVP.
800 o Increase default size for BIO buffering filter.
801 o Compatibility fixes in some scripts.
803 Major changes between OpenSSL 0.9.6 and OpenSSL 0.9.6a [5 Apr 2001]:
805 o Security fix: change behavior of OpenSSL to avoid using
806 environment variables when running as root.
807 o Security fix: check the result of RSA-CRT to reduce the
808 possibility of deducing the private key from an incorrectly
809 calculated signature.
810 o Security fix: prevent Bleichenbacher's DSA attack.
811 o Security fix: Zero the premaster secret after deriving the
812 master secret in DH ciphersuites.
813 o Reimplement SSL_peek(), which had various problems.
814 o Compatibility fix: the function des_encrypt() renamed to
815 des_encrypt1() to avoid clashes with some Unixen libc.
816 o Bug fixes for Win32, HP/UX and Irix.
817 o Bug fixes in BIGNUM, SSL, PKCS#7, PKCS#12, X.509, CONF and
818 memory checking routines.
819 o Bug fixes for RSA operations in threaded environments.
820 o Bug fixes in misc. openssl applications.
821 o Remove a few potential memory leaks.
822 o Add tighter checks of BIGNUM routines.
823 o Shared library support has been reworked for generality.
824 o More documentation.
825 o New function BN_rand_range().
826 o Add "-rand" option to openssl s_client and s_server.
828 Major changes between OpenSSL 0.9.5a and OpenSSL 0.9.6 [10 Oct 2000]:
830 o Some documentation for BIO and SSL libraries.
831 o Enhanced chain verification using key identifiers.
832 o New sign and verify options to 'dgst' application.
833 o Support for DER and PEM encoded messages in 'smime' application.
834 o New 'rsautl' application, low level RSA utility.
836 o Bugfix for SSL rollback padding check.
837 o Support for external crypto devices [1].
838 o Enhanced EVP interface.
840 [1] The support for external crypto devices is currently a separate
841 distribution. See the file README.ENGINE.
843 Major changes between OpenSSL 0.9.5 and OpenSSL 0.9.5a [1 Apr 2000]:
845 o Bug fixes for Win32, SuSE Linux, NeXTSTEP and FreeBSD 2.2.8
846 o Shared library support for HPUX and Solaris-gcc
847 o Support of Linux/IA64
848 o Assembler support for Mingw32
849 o New 'rand' application
850 o New way to check for existence of algorithms from scripts
852 Major changes between OpenSSL 0.9.4 and OpenSSL 0.9.5 [25 May 2000]:
854 o S/MIME support in new 'smime' command
855 o Documentation for the OpenSSL command line application
856 o Automation of 'req' application
857 o Fixes to make s_client, s_server work under Windows
858 o Support for multiple fieldnames in SPKACs
859 o New SPKAC command line utility and associated library functions
860 o Options to allow passwords to be obtained from various sources
861 o New public key PEM format and options to handle it
862 o Many other fixes and enhancements to command line utilities
863 o Usable certificate chain verification
864 o Certificate purpose checking
865 o Certificate trust settings
866 o Support of authority information access extension
867 o Extensions in certificate requests
868 o Simplified X509 name and attribute routines
869 o Initial (incomplete) support for international character sets
870 o New DH_METHOD, DSA_METHOD and enhanced RSA_METHOD
871 o Read only memory BIOs and simplified creation function
872 o TLS/SSL protocol bugfixes: Accept TLS 'client hello' in SSL 3.0
873 record; allow fragmentation and interleaving of handshake and other
875 o TLS/SSL code now "tolerates" MS SGC
876 o Work around for Netscape client certificate hang bug
877 o RSA_NULL option that removes RSA patent code but keeps other
879 o Memory leak detection now allows applications to add extra information
880 via a per-thread stack
881 o PRNG robustness improved
883 o BIGNUM library bug fixes
884 o Faster DSA parameter generation
885 o Enhanced support for Alpha Linux
886 o Experimental MacOS support
888 Major changes between OpenSSL 0.9.3 and OpenSSL 0.9.4 [9 Aug 1999]:
890 o Transparent support for PKCS#8 format private keys: these are used
891 by several software packages and are more secure than the standard
893 o PKCS#5 v2.0 implementation
894 o Password callbacks have a new void * argument for application data
895 o Avoid various memory leaks
896 o New pipe-like BIO that allows using the SSL library when actual I/O
897 must be handled by the application (BIO pair)
899 Major changes between OpenSSL 0.9.2b and OpenSSL 0.9.3 [24 May 1999]:
900 o Lots of enhancements and cleanups to the Configuration mechanism
901 o RSA OEAP related fixes
902 o Added `openssl ca -revoke' option for revoking a certificate
903 o Source cleanups: const correctness, type-safe stacks and ASN.1 SETs
904 o Source tree cleanups: removed lots of obsolete files
905 o Thawte SXNet, certificate policies and CRL distribution points
907 o Preliminary (experimental) S/MIME support
908 o Support for ASN.1 UTF8String and VisibleString
909 o Full integration of PKCS#12 code
910 o Sparc assembler bignum implementation, optimized hash functions
911 o Option to disable selected ciphers
913 Major changes between OpenSSL 0.9.1c and OpenSSL 0.9.2b [22 Mar 1999]:
914 o Fixed a security hole related to session resumption
915 o Fixed RSA encryption routines for the p < q case
916 o "ALL" in cipher lists now means "everything except NULL ciphers"
917 o Support for Triple-DES CBCM cipher
918 o Support of Optimal Asymmetric Encryption Padding (OAEP) for RSA
919 o First support for new TLSv1 ciphers
920 o Added a few new BIOs (syslog BIO, reliable BIO)
921 o Extended support for DSA certificate/keys.
922 o Extended support for Certificate Signing Requests (CSR)
923 o Initial support for X.509v3 extensions
924 o Extended support for compression inside the SSL record layer
925 o Overhauled Win32 builds
926 o Cleanups and fixes to the Big Number (BN) library
927 o Support for ASN.1 GeneralizedTime
928 o Splitted ASN.1 SETs from SEQUENCEs
929 o ASN1 and PEM support for Netscape Certificate Sequences
930 o Overhauled Perl interface
931 o Lots of source tree cleanups.
932 o Lots of memory leak fixes.
935 Major changes between SSLeay 0.9.0b and OpenSSL 0.9.1c [23 Dec 1998]:
936 o Integration of the popular NO_RSA/NO_DSA patches
937 o Initial support for compression inside the SSL record layer
938 o Added BIO proxy and filtering functionality
939 o Extended Big Number (BN) library
940 o Added RIPE MD160 message digest
941 o Added support for RC2/64bit cipher
942 o Extended ASN.1 parser routines
943 o Adjustments of the source tree for CVS
944 o Support for various new platforms