[thirdparty/openssl.git] / CHANGES


 OpenSSL CHANGES
 _______________

 Changes between 1.0.1 and 1.0.2 [xx XXX xxxx]

  *) Add DH parameters from RFC5114 including test data to dhtest.
     [Steve Henson]

  *) Support for automatic EC temporary key parameter selection. If enabled
     the most preferred EC parameters are automatically used instead of
     hardcoded fixed parameters. Now a server just has to call:
     SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
     support ECDH and use the most appropriate parameters.
     [Steve Henson]

  *) Enhance and tidy EC curve and point format TLS extension code. Use
     static structures instead of allocation if default values are used.
     New ctrls to set curves we wish to support and to retrieve shared curves.
     Print out shared curves in s_server. New options to s_server and s_client
     to set list of supported curves.
     [Steve Henson]

  *) New ctrls to retrieve supported signature algorithms and 
     supported curve values as an array of NIDs. Extend openssl utility
     to print out received values.
     [Steve Henson]

  *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
     between NIDs and the more common NIST names such as "P-256". Enhance
     ecparam utility and ECC method to recognise the NIST names for curves.
     [Steve Henson]

  *) Enhance SSL/TLS certificate chain handling to support different
     chains for each certificate instead of one chain in the parent SSL_CTX.
     [Steve Henson]

  *) Support for fixed DH ciphersuite client authentication: where both
     server and client use DH certificates with common parameters.
     [Steve Henson]

  *) Support for fixed DH ciphersuites: those requiring DH server
     certificates.
     [Steve Henson]

 Changes between 1.0.1 and 1.0.1a [xx XXX xxxx]

  *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
     [Andy Polyakov]

 Changes between 1.0.0h and 1.0.1  [14 Mar 2012]

  *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
     STRING form instead of a DigestInfo.
     [Steve Henson]

  *) The format used for MDC2 RSA signatures is inconsistent between EVP
     and the RSA_sign/RSA_verify functions. This was made more apparent when
     OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
     those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect 
     the correct format in RSA_verify so both forms transparently work.
     [Steve Henson]

  *) Some servers which support TLS 1.0 can choke if we initially indicate
     support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
     encrypted premaster secret. As a workaround use the maximum pemitted
     client version in client hello, this should keep such servers happy
     and still work with previous versions of OpenSSL.
     [Steve Henson]

  *) Add support for TLS/DTLS heartbeats.
     [Robin Seggelmann <seggelmann@fh-muenster.de>]

  *) Add support for SCTP.
     [Robin Seggelmann <seggelmann@fh-muenster.de>]

  *) Improved PRNG seeding for VOS.
     [Paul Green <Paul.Green@stratus.com>]

  *) Extensive assembler packs updates, most notably:

	- x86[_64]:     AES-NI, PCLMULQDQ, RDRAND support;
	- x86[_64]:     SSSE3 support (SHA1, vector-permutation AES);
	- x86_64:       bit-sliced AES implementation;
	- ARM:          NEON support, contemporary platforms optimizations;
	- s390x:        z196 support;
	- *:            GHASH and GF(2^m) multiplication implementations;

     [Andy Polyakov]

  *) Make TLS-SRP code conformant with RFC 5054 API cleanup
     (removal of unnecessary code)
     [Peter Sylvester <peter.sylvester@edelweb.fr>]

  *) Add TLS key material exporter from RFC 5705.
     [Eric Rescorla]

  *) Add DTLS-SRTP negotiation from RFC 5764.
     [Eric Rescorla]

  *) Add Next Protocol Negotiation,
     http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
     disabled with a no-npn flag to config or Configure. Code donated
     by Google.
     [Adam Langley <agl@google.com> and Ben Laurie]

  *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
     NIST-P256, NIST-P521, with constant-time single point multiplication on
     typical inputs. Compiler support for the nonstandard type __uint128_t is
     required to use this (present in gcc 4.4 and later, for 64-bit builds).
     Code made available under Apache License version 2.0.

     Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
     line to include this in your build of OpenSSL, and run "make depend" (or
     "make update"). This enables the following EC_METHODs:

         EC_GFp_nistp224_method()
         EC_GFp_nistp256_method()
         EC_GFp_nistp521_method()

     EC_GROUP_new_by_curve_name() will automatically use these (while
     EC_GROUP_new_curve_GFp() currently prefers the more flexible
     implementations).
Commit	Line	Data
	1
	2	OpenSSL CHANGES
	3	_______________
	4
	5	Changes between 1.0.1 and 1.0.2 [xx XXX xxxx]
	6
	7	*) Add DH parameters from RFC5114 including test data to dhtest.
	8	[Steve Henson]
	9
	10	*) Support for automatic EC temporary key parameter selection. If enabled
	11	the most preferred EC parameters are automatically used instead of
	12	hardcoded fixed parameters. Now a server just has to call:
	13	SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
	14	support ECDH and use the most appropriate parameters.
	15	[Steve Henson]
	16
	17	*) Enhance and tidy EC curve and point format TLS extension code. Use
	18	static structures instead of allocation if default values are used.
	19	New ctrls to set curves we wish to support and to retrieve shared curves.
	20	Print out shared curves in s_server. New options to s_server and s_client
	21	to set list of supported curves.
	22	[Steve Henson]
	23
	24	*) New ctrls to retrieve supported signature algorithms and
	25	supported curve values as an array of NIDs. Extend openssl utility
	26	to print out received values.
	27	[Steve Henson]
	28
	29	*) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
	30	between NIDs and the more common NIST names such as "P-256". Enhance
	31	ecparam utility and ECC method to recognise the NIST names for curves.
	32	[Steve Henson]
	33
	34	*) Enhance SSL/TLS certificate chain handling to support different
	35	chains for each certificate instead of one chain in the parent SSL_CTX.
	36	[Steve Henson]
	37
	38	*) Support for fixed DH ciphersuite client authentication: where both
	39	server and client use DH certificates with common parameters.
	40	[Steve Henson]
	41
	42	*) Support for fixed DH ciphersuites: those requiring DH server
	43	certificates.
	44	[Steve Henson]
	45
	46	Changes between 1.0.1 and 1.0.1a [xx XXX xxxx]
	47
	48	*) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
	49	[Andy Polyakov]
	50
	51	Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
	52
	53	*) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
	54	STRING form instead of a DigestInfo.
	55	[Steve Henson]
	56
	57	*) The format used for MDC2 RSA signatures is inconsistent between EVP
	58	and the RSA_sign/RSA_verify functions. This was made more apparent when
	59	OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
	60	those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
	61	the correct format in RSA_verify so both forms transparently work.
	62	[Steve Henson]
	63
	64	*) Some servers which support TLS 1.0 can choke if we initially indicate
	65	support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
	66	encrypted premaster secret. As a workaround use the maximum pemitted
	67	client version in client hello, this should keep such servers happy
	68	and still work with previous versions of OpenSSL.
	69	[Steve Henson]
	70
	71	*) Add support for TLS/DTLS heartbeats.
	72	[Robin Seggelmann <seggelmann@fh-muenster.de>]
	73
	74	*) Add support for SCTP.
	75	[Robin Seggelmann <seggelmann@fh-muenster.de>]
	76
	77	*) Improved PRNG seeding for VOS.
	78	[Paul Green <Paul.Green@stratus.com>]
	79
	80	*) Extensive assembler packs updates, most notably:
	81
	82	- x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
	83	- x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
	84	- x86_64: bit-sliced AES implementation;
	85	- ARM: NEON support, contemporary platforms optimizations;
	86	- s390x: z196 support;
	87	- *: GHASH and GF(2^m) multiplication implementations;
	88
	89	[Andy Polyakov]
	90
	91	*) Make TLS-SRP code conformant with RFC 5054 API cleanup
	92	(removal of unnecessary code)
	93	[Peter Sylvester <peter.sylvester@edelweb.fr>]
	94
	95	*) Add TLS key material exporter from RFC 5705.
	96	[Eric Rescorla]
	97
	98	*) Add DTLS-SRTP negotiation from RFC 5764.
	99	[Eric Rescorla]
	100
	101	*) Add Next Protocol Negotiation,
	102	http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
	103	disabled with a no-npn flag to config or Configure. Code donated
	104	by Google.
	105	[Adam Langley <agl@google.com> and Ben Laurie]
	106
	107	*) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
	108	NIST-P256, NIST-P521, with constant-time single point multiplication on
	109	typical inputs. Compiler support for the nonstandard type __uint128_t is
	110	required to use this (present in gcc 4.4 and later, for 64-bit builds).
	111	Code made available under Apache License version 2.0.
	112
	113	Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
	114	line to include this in your build of OpenSSL, and run "make depend" (or
	115	"make update"). This enables the following EC_METHODs:
	116
	117	EC_GFp_nistp224_method()
	118	EC_GFp_nistp256_method()
	119	EC_GFp_nistp521_method()
	120
	121	EC_GROUP_new_by_curve_name() will automatically use these (while
	122	EC_GROUP_new_curve_GFp() currently prefers the more flexible
	123	implementations).
	124