[thirdparty/openssl.git] / CHANGES


 OpenSSL CHANGES
 _______________

 Changes between 0.9.8 and 0.9.9  [xx XXX xxxx]

  *) 

 Changes between 0.9.8 and 0.9.8a  [XX xxx XXXX]

  *) 

 Changes between 0.9.7h and 0.9.8  [05 Jul 2005]

  *) Add libcrypto.pc and libssl.pc for those who feel they need them.
     [Richard Levitte]

  *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
     key into the same file any more.
     [Richard Levitte]

  *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
     [Andy Polyakov]

  *) Add -utf8 command line and config file option to 'ca'.
     [Stefan <stf@udoma.org]

  *) Removed the macro des_crypt(), as it seems to conflict with some
     libraries.  Use DES_crypt().
     [Richard Levitte]

  *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
     involves renaming the source and generated shared-libs for
     both. The engines will accept the corrected or legacy ids
     ('ncipher' and '4758_cca' respectively) when binding. NB,
     this only applies when building 'shared'.
     [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]

  *) Add attribute functions to EVP_PKEY structure. Modify
     PKCS12_create() to recognize a CSP name attribute and
     use it. Make -CSP option work again in pkcs12 utility.
     [Steve Henson]

  *) Add new functionality to the bn blinding code:
     - automatic re-creation of the BN_BLINDING parameters after
       a fixed number of uses (currently 32)
     - add new function for parameter creation
     - introduce flags to control the update behaviour of the
       BN_BLINDING parameters
     - hide BN_BLINDING structure
     Add a second BN_BLINDING slot to the RSA structure to improve
     performance when a single RSA object is shared among several
     threads.
     [Nils Larsch]

  *) Add support for DTLS.
     [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]

  *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
     to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
     [Walter Goulet]

  *) Remove buggy and incompletet DH cert support from
     ssl/ssl_rsa.c and ssl/s3_both.c
     [Nils Larsch]

  *) Use SHA-1 instead of MD5 as the default digest algorithm for
     the apps/openssl applications.
     [Nils Larsch]

  *) Compile clean with "-Wall -Wmissing-prototypes
     -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
     DEBUG_SAFESTACK must also be set.
     [Ben Laurie]

  *) Change ./Configure so that certain algorithms can be disabled by default.
     The new counterpiece to "no-xxx" is "enable-xxx".

     The patented RC5 and MDC2 algorithms will now be disabled unless
     "enable-rc5" and "enable-mdc2", respectively, are specified.

     (IDEA remains enabled despite being patented.  This is because IDEA
     is frequently required for interoperability, and there is no license
     fee for non-commercial use.  As before, "no-idea" can be used to
     avoid this algorithm.)

     [Bodo Moeller]

  *) Add processing of proxy certificates (see RFC 3820).  This work was
     sponsored by KTH (The Royal Institute of Technology in Stockholm) and
     EGEE (Enabling Grids for E-science in Europe).
     [Richard Levitte]

  *) RC4 performance overhaul on modern architectures/implementations, such
     as Intel P4, IA-64 and AMD64.
     [Andy Polyakov]

  *) New utility extract-section.pl. This can be used specify an alternative
     section number in a pod file instead of having to treat each file as
     a separate case in Makefile. This can be done by adding two lines to the
     pod file:

     =for comment openssl_section:XXX

     The blank line is mandatory.

     [Steve Henson]

  *) New arguments -certform, -keyform and -pass for s_client and s_server
     to allow alternative format key and certificate files and passphrase
     sources.
     [Steve Henson]

  *) New structure X509_VERIFY_PARAM which combines current verify parameters,
     update associated structures and add various utility functions.

     Add new policy related verify parameters, include policy checking in 
     standard verify code. Enhance 'smime' application with extra parameters
     to support policy checking and print out.
     [Steve Henson]

  *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
     Nehemiah processors. These extensions support AES encryption in hardware
     as well as RNG (though RNG support is currently disabled).
     [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]

  *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
     [Geoff Thorpe]

  *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
     [Andy Polyakov and a number of other people]

  *) Improved PowerPC platform support. Most notably BIGNUM assembler
     implementation contributed by IBM.
     [Suresh Chari, Peter Waltenberg, Andy Polyakov]

  *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
     exponent rather than 'unsigned long'. There is a corresponding change to
     the new 'rsa_keygen' element of the RSA_METHOD structure.
     [Jelte Jansen, Geoff Thorpe]

  *) Functionality for creating the initial serial number file is now
     moved from CA.pl to the 'ca' utility with a new option -create_serial.

     (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
     number file to 1, which is bound to cause problems.  To avoid
     the problems while respecting compatibility between different 0.9.7
     patchlevels, 0.9.7e  employed 'openssl x509 -next_serial' in
     CA.pl for serial number initialization.  With the new release 0.9.8,
     we can fix the problem directly in the 'ca' utility.)
     [Steve Henson]

  *) Reduced header interdepencies by declaring more opaque objects in
     ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
     give fewer recursive includes, which could break lazy source code - so
     this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
     developers should define this symbol when building and using openssl to
     ensure they track the recommended behaviour, interfaces, [etc], but
     backwards-compatible behaviour prevails when this isn't defined.
     [Geoff Thorpe]

  *) New function X509_POLICY_NODE_print() which prints out policy nodes.
     [Steve Henson]

  *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
     This will generate a random key of the appropriate length based on the 
     cipher context. The EVP_CIPHER can provide its own random key generation
     routine to support keys of a specific form. This is used in the des and 
     3des routines to generate a key of the correct parity. Update S/MIME
     code to use new functions and hence generate correct parity DES keys.
     Add EVP_CHECK_DES_KEY #define to return an error if the key is not 
     valid (weak or incorrect parity).
     [Steve Henson]

  *) Add a local set of CRLs that can be used by X509_verify_cert() as well
     as looking them up. This is useful when the verified structure may contain
     CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
     present unless the new PKCS7_NO_CRL flag is asserted.
     [Steve Henson]

  *) Extend ASN1 oid configuration module. It now additionally accepts the
     syntax:

     shortName = some long name, 1.2.3.4
     [Steve Henson]

  *) Reimplemented the BN_CTX implementation. There is now no more static
     limitation on the number of variables it can handle nor the depth of the
     "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
     information can now expand as required, and rather than having a single
     static array of bignums, BN_CTX now uses a linked-list of such arrays
     allowing it to expand on demand whilst maintaining the usefulness of
     BN_CTX's "bundling".
     [Geoff Thorpe]

  *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
     to allow all RSA operations to function using a single BN_CTX.
     [Geoff Thorpe]

  *) Preliminary support for certificate policy evaluation and checking. This
     is initially intended to pass the tests outlined in "Conformance Testing
     of Relying Party Client Certificate Path Processing Logic" v1.07.
     [Steve Henson]

  *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
     remained unused and not that useful. A variety of other little bignum
     tweaks and fixes have also been made continuing on from the audit (see
     below).
     [Geoff Thorpe]

  *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
     associated ASN1, EVP and SSL functions and old ASN1 macros.
     [Richard Levitte]

  *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
     and this should never fail. So the return value from the use of
     BN_set_word() (which can fail due to needless expansion) is now deprecated;
     if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
     [Geoff Thorpe]

  *) BN_CTX_get() should return zero-valued bignums, providing the same
     initialised value as BN_new().
Commit	Line	Data
81a6c781	1
f1c236f8	2	OpenSSL CHANGES
651d0aff RE	3	_______________
651d0aff RE	4
28e4fe34 RL	5	Changes between 0.9.8 and 0.9.9 [xx XXX xxxx]
	6
	7	*)
	8
2bd2cd9b RL	9	Changes between 0.9.8 and 0.9.8a [XX xxx XXXX]
	10
	11	*)
	12
	13	Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
12bdb643	14
c8310124 RL	15	*) Add libcrypto.pc and libssl.pc for those who feel they need them.
	16	[Richard Levitte]
	17
	18	*) Change CA.sh and CA.pl so they don't bundle the CSR and the private
	19	key into the same file any more.
	20	[Richard Levitte]
	21
8d3509b9 AP	22	*) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
	23	[Andy Polyakov]
	24
cbdac46d DSH	25	*) Add -utf8 command line and config file option to 'ca'.
	26	[Stefan <stf@udoma.org]
	27
c8310124 RL	28	*) Removed the macro des_crypt(), as it seems to conflict with some
	29	libraries. Use DES_crypt().
	30	[Richard Levitte]
	31
a2c32e2d GT	32	*) Correct naming of the 'chil' and '4758cca' ENGINEs. This
	33	involves renaming the source and generated shared-libs for
	34	both. The engines will accept the corrected or legacy ids
	35	('ncipher' and '4758_cca' respectively) when binding. NB,
	36	this only applies when building 'shared'.
	37	[Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
	38
b6995add DSH	39	*) Add attribute functions to EVP_PKEY structure. Modify
	40	PKCS12_create() to recognize a CSP name attribute and
	41	use it. Make -CSP option work again in pkcs12 utility.
	42	[Steve Henson]
	43
800e400d NL	44	*) Add new functionality to the bn blinding code:
	45	- automatic re-creation of the BN_BLINDING parameters after
	46	a fixed number of uses (currently 32)
	47	- add new function for parameter creation
	48	- introduce flags to control the update behaviour of the
	49	BN_BLINDING parameters
	50	- hide BN_BLINDING structure
	51	Add a second BN_BLINDING slot to the RSA structure to improve
	52	performance when a single RSA object is shared among several
	53	threads.
	54	[Nils Larsch]
	55
36d16f8e BL	56	*) Add support for DTLS.
	57	[Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
	58
dc0ed30c NL	59	*) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
	60	to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
	61	[Walter Goulet]
	62
6049399b NL	63	*) Remove buggy and incompletet DH cert support from
	64	ssl/ssl_rsa.c and ssl/s3_both.c
	65	[Nils Larsch]
	66
12bdb643 NL	67	*) Use SHA-1 instead of MD5 as the default digest algorithm for
	68	the apps/openssl applications.
	69	[Nils Larsch]
4d94ae00	70
41a15c4f BL	71	*) Compile clean with "-Wall -Wmissing-prototypes
	72	-Wstrict-prototypes -Wmissing-declarations -Werror". Currently
	73	DEBUG_SAFESTACK must also be set.
	74	[Ben Laurie]
	75
c9a112f5	76	*) Change ./Configure so that certain algorithms can be disabled by default.
ecc5ef87 BM	77	The new counterpiece to "no-xxx" is "enable-xxx".
	78
	79	The patented RC5 and MDC2 algorithms will now be disabled unless
	80	"enable-rc5" and "enable-mdc2", respectively, are specified.
	81
	82	(IDEA remains enabled despite being patented. This is because IDEA
	83	is frequently required for interoperability, and there is no license
	84	fee for non-commercial use. As before, "no-idea" can be used to
	85	avoid this algorithm.)
	86
c9a112f5 BM	87	[Bodo Moeller]
c9a112f5 BM	88
6951c23a RL	89	*) Add processing of proxy certificates (see RFC 3820). This work was
	90	sponsored by KTH (The Royal Institute of Technology in Stockholm) and
	91	EGEE (Enabling Grids for E-science in Europe).
	92	[Richard Levitte]
	93
ea681ba8 AP	94	*) RC4 performance overhaul on modern architectures/implementations, such
	95	as Intel P4, IA-64 and AMD64.
	96	[Andy Polyakov]
	97
401ee37a DSH	98	*) New utility extract-section.pl. This can be used specify an alternative
	99	section number in a pod file instead of having to treat each file as
	100	a separate case in Makefile. This can be done by adding two lines to the
	101	pod file:
	102
	103	=for comment openssl_section:XXX
	104
	105	The blank line is mandatory.
	106
	107	[Steve Henson]
	108
826a42a0 DSH	109	*) New arguments -certform, -keyform and -pass for s_client and s_server
	110	to allow alternative format key and certificate files and passphrase
	111	sources.
	112	[Steve Henson]
	113
5d7c222d DSH	114	*) New structure X509_VERIFY_PARAM which combines current verify parameters,
	115	update associated structures and add various utility functions.
	116
	117	Add new policy related verify parameters, include policy checking in
	118	standard verify code. Enhance 'smime' application with extra parameters
	119	to support policy checking and print out.
	120	[Steve Henson]
	121
30fe028f GT	122	*) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
	123	Nehemiah processors. These extensions support AES encryption in hardware
	124	as well as RNG (though RNG support is currently disabled).
	125	[Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
	126
df11e1e9 GT	127	*) Deprecate BN_[get\|set]_params() functions (they were ignored internally).
	128	[Geoff Thorpe]
	129
ad500340 AP	130	*) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
	131	[Andy Polyakov and a number of other people]
	132
e14f4aab AP	133	*) Improved PowerPC platform support. Most notably BIGNUM assembler
	134	implementation contributed by IBM.
	135	[Suresh Chari, Peter Waltenberg, Andy Polyakov]
	136
bcfea9fb GT	137	*) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
	138	exponent rather than 'unsigned long'. There is a corresponding change to
	139	the new 'rsa_keygen' element of the RSA_METHOD structure.
	140	[Jelte Jansen, Geoff Thorpe]
	141
d5f686d8 BM	142	*) Functionality for creating the initial serial number file is now
	143	moved from CA.pl to the 'ca' utility with a new option -create_serial.
	144
	145	(Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
	146	number file to 1, which is bound to cause problems. To avoid
	147	the problems while respecting compatibility between different 0.9.7
	148	patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
	149	CA.pl for serial number initialization. With the new release 0.9.8,
	150	we can fix the problem directly in the 'ca' utility.)
64674bcc DSH	151	[Steve Henson]
64674bcc DSH	152
3a87a9b9 GT	153	*) Reduced header interdepencies by declaring more opaque objects in
	154	ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
	155	give fewer recursive includes, which could break lazy source code - so
	156	this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
	157	developers should define this symbol when building and using openssl to
	158	ensure they track the recommended behaviour, interfaces, [etc], but
	159	backwards-compatible behaviour prevails when this isn't defined.
	160	[Geoff Thorpe]
	161
bf5773fa DSH	162	*) New function X509_POLICY_NODE_print() which prints out policy nodes.
	163	[Steve Henson]
	164
216659eb DSH	165	*) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
	166	This will generate a random key of the appropriate length based on the
	167	cipher context. The EVP_CIPHER can provide its own random key generation
	168	routine to support keys of a specific form. This is used in the des and
	169	3des routines to generate a key of the correct parity. Update S/MIME
	170	code to use new functions and hence generate correct parity DES keys.
	171	Add EVP_CHECK_DES_KEY #define to return an error if the key is not
	172	valid (weak or incorrect parity).
	173	[Steve Henson]
	174
e1a27eb3 DSH	175	*) Add a local set of CRLs that can be used by X509_verify_cert() as well
	176	as looking them up. This is useful when the verified structure may contain
	177	CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
	178	present unless the new PKCS7_NO_CRL flag is asserted.
	179	[Steve Henson]
	180
6446e0c3 DSH	181	*) Extend ASN1 oid configuration module. It now additionally accepts the
	182	syntax:
	183
	184	shortName = some long name, 1.2.3.4
	185	[Steve Henson]
	186
5c98b2ca GT	187	*) Reimplemented the BN_CTX implementation. There is now no more static
	188	limitation on the number of variables it can handle nor the depth of the
	189	"stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
	190	information can now expand as required, and rather than having a single
	191	static array of bignums, BN_CTX now uses a linked-list of such arrays
	192	allowing it to expand on demand whilst maintaining the usefulness of
	193	BN_CTX's "bundling".
	194	[Geoff Thorpe]
	195
46ef873f GT	196	*) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
	197	to allow all RSA operations to function using a single BN_CTX.
	198	[Geoff Thorpe]
	199
4acc3e90 DSH	200	*) Preliminary support for certificate policy evaluation and checking. This
	201	is initially intended to pass the tests outlined in "Conformance Testing
	202	of Relying Party Client Certificate Path Processing Logic" v1.07.
	203	[Steve Henson]
	204
7f663ce4 GT	205	*) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
	206	remained unused and not that useful. A variety of other little bignum
	207	tweaks and fixes have also been made continuing on from the audit (see
	208	below).
	209	[Geoff Thorpe]
	210
875a644a RL	211	*) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
875a644a RL	212	associated ASN1, EVP and SSL functions and old ASN1 macros.
7f663ce4	213	[Richard Levitte]
875a644a	214
b6358c89 GT	215	*) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
	216	and this should never fail. So the return value from the use of
	217	BN_set_word() (which can fail due to needless expansion) is now deprecated;
	218	if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
	219	[Geoff Thorpe]
	220
9e051bac GT	221	*) BN_CTX_get() should return zero-valued bignums, providing the same
	222	initialised value as BN_new().
	223