[thirdparty/openssl.git] / CHANGES


 OpenSSL CHANGES
 _______________

 Changes between 0.9.7c and 0.9.8  [xx XXX xxxx]

  *) 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
beab098d	5	Changes between 0.9.7c and 0.9.8 [xx XXX xxxx]
4d94ae00	6
216659eb DSH	7	*) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
	8	This will generate a random key of the appropriate length based on the
	9	cipher context. The EVP_CIPHER can provide its own random key generation
	10	routine to support keys of a specific form. This is used in the des and
	11	3des routines to generate a key of the correct parity. Update S/MIME
	12	code to use new functions and hence generate correct parity DES keys.
	13	Add EVP_CHECK_DES_KEY #define to return an error if the key is not
	14	valid (weak or incorrect parity).
	15	[Steve Henson]
	16
e1a27eb3 DSH	17	*) Add a local set of CRLs that can be used by X509_verify_cert() as well
	18	as looking them up. This is useful when the verified structure may contain
	19	CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
	20	present unless the new PKCS7_NO_CRL flag is asserted.
	21	[Steve Henson]
	22
6446e0c3 DSH	23	*) Extend ASN1 oid configuration module. It now additionally accepts the
	24	syntax:
	25
	26	shortName = some long name, 1.2.3.4
	27	[Steve Henson]
	28
5c98b2ca GT	29	*) Reimplemented the BN_CTX implementation. There is now no more static
	30	limitation on the number of variables it can handle nor the depth of the
	31	"stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
	32	information can now expand as required, and rather than having a single
	33	static array of bignums, BN_CTX now uses a linked-list of such arrays
	34	allowing it to expand on demand whilst maintaining the usefulness of
	35	BN_CTX's "bundling".
	36	[Geoff Thorpe]
	37
46ef873f GT	38	*) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
	39	to allow all RSA operations to function using a single BN_CTX.
	40	[Geoff Thorpe]
	41
4acc3e90 DSH	42	*) Preliminary support for certificate policy evaluation and checking. This
	43	is initially intended to pass the tests outlined in "Conformance Testing
	44	of Relying Party Client Certificate Path Processing Logic" v1.07.
	45	[Steve Henson]
	46
7f663ce4 GT	47	*) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
	48	remained unused and not that useful. A variety of other little bignum
	49	tweaks and fixes have also been made continuing on from the audit (see
	50	below).
	51	[Geoff Thorpe]
	52
875a644a RL	53	*) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
875a644a RL	54	associated ASN1, EVP and SSL functions and old ASN1 macros.
7f663ce4	55	[Richard Levitte]
875a644a	56
b6358c89 GT	57	*) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
	58	and this should never fail. So the return value from the use of
	59	BN_set_word() (which can fail due to needless expansion) is now deprecated;
	60	if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
	61	[Geoff Thorpe]
	62
9e051bac GT	63	*) BN_CTX_get() should return zero-valued bignums, providing the same
	64	initialised value as BN_new().
	65