From: Dr. Stephen Henson <steve@openssl.org>
Date: Wed, 19 Apr 2006 17:05:59 +0000 (+0000)
Subject: Remove link between digests and signature algorithms.
X-Git-Tag: OpenSSL_0_9_8k^2~1370
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ee1d9ec019a7584482bd95891404f1cad66a4a0a;p=oweals%2Fopenssl.git

Remove link between digests and signature algorithms.

Use cross reference table in ASN1_item_sign(), ASN1_item_verify() to eliminate
the need for algorithm specific code.
---

diff --git a/CHANGES b/CHANGES
index d87e1ebbdd..c74a02c367 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,12 @@
 
  Changes between 0.9.8a and 0.9.9  [xx XXX xxxx]
 
+  *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New 
+     EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
+     signing method from the key type. This effectively removes the link
+     between digests and public key types.
+     [Steve Henson]
+
   *) Add an OID cross reference table and utility functions. Its purpose is to
      translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
      rsaEncryption. This will allow some of the algorithm specific hackery
diff --git a/apps/ca.c b/apps/ca.c
index 9af7bab20b..f7532d21b5 100644
--- a/apps/ca.c
+++ b/apps/ca.c
@@ -1412,6 +1412,7 @@ bad:
 
 		/* we now have a CRL */
 		if (verbose) BIO_printf(bio_err,"signing CRL\n");
+#if 0
 #ifndef OPENSSL_NO_DSA
 		if (pkey->type == EVP_PKEY_DSA) 
 			dgst=EVP_dss1();
@@ -1420,6 +1421,7 @@ bad:
 #ifndef OPENSSL_NO_ECDSA
 		if (pkey->type == EVP_PKEY_EC)
 			dgst=EVP_ecdsa();
+#endif
 #endif
 
 		/* Add any extensions asked for */
diff --git a/apps/req.c b/apps/req.c
index 14bb0e0d03..b9a3852cfc 100644
--- a/apps/req.c
+++ b/apps/req.c
@@ -894,6 +894,7 @@ loop:
 			BIO_printf(bio_err,"you need to specify a private key\n");
 			goto end;
 			}
+#if 0
 #ifndef OPENSSL_NO_DSA
 		if (pkey->type == EVP_PKEY_DSA)
 			digest=EVP_dss1();
@@ -901,6 +902,7 @@ loop:
 #ifndef OPENSSL_NO_ECDSA
 		if (pkey->type == EVP_PKEY_EC)
 			digest=EVP_ecdsa();
+#endif
 #endif
 		if (req == NULL)
 			{
diff --git a/apps/x509.c b/apps/x509.c
index 8d20681ec3..e3a97383a6 100644
--- a/apps/x509.c
+++ b/apps/x509.c
@@ -912,6 +912,7 @@ bad:
 						passin, e, "Private key");
 					if (Upkey == NULL) goto end;
 					}
+#if 0
 #ifndef OPENSSL_NO_DSA
 		                if (Upkey->type == EVP_PKEY_DSA)
 		                        digest=EVP_dss1();
@@ -919,6 +920,7 @@ bad:
 #ifndef OPENSSL_NO_ECDSA
 				if (Upkey->type == EVP_PKEY_EC)
 					digest=EVP_ecdsa();
+#endif
 #endif
 
 				assert(need_rand);
diff --git a/crypto/asn1/a_sign.c b/crypto/asn1/a_sign.c
index 1081950518..c98dc7c332 100644
--- a/crypto/asn1/a_sign.c
+++ b/crypto/asn1/a_sign.c
@@ -123,6 +123,7 @@
 #include <openssl/x509.h>
 #include <openssl/objects.h>
 #include <openssl/buffer.h>
+#include "asn1_locl.h"
 
 #ifndef NO_ASN1_OLD
 
@@ -218,45 +219,34 @@ int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
 	{
 	EVP_MD_CTX ctx;
 	unsigned char *buf_in=NULL,*buf_out=NULL;
-	int i,inl=0,outl=0,outll=0;
-	X509_ALGOR *a;
+	int inl=0,outl=0,outll=0;
+	int signid, paramtype;
 
-	EVP_MD_CTX_init(&ctx);
-	for (i=0; i<2; i++)
+	if (type->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE)
 		{
-		if (i == 0)
-			a=algor1;
-		else
-			a=algor2;
-		if (a == NULL) continue;
-                if (type->pkey_type == NID_dsaWithSHA1 ||
-			type->pkey_type == NID_ecdsa_with_SHA1)
-			{
-			/* special case: RFC 3279 tells us to omit 'parameters'
-			 * with id-dsa-with-sha1 and ecdsa-with-SHA1 */
-			ASN1_TYPE_free(a->parameter);
-			a->parameter = NULL;
-			}
-		else if ((a->parameter == NULL) || 
-			(a->parameter->type != V_ASN1_NULL))
-			{
-			ASN1_TYPE_free(a->parameter);
-			if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err;
-			a->parameter->type=V_ASN1_NULL;
-			}
-		ASN1_OBJECT_free(a->algorithm);
-		a->algorithm=OBJ_nid2obj(type->pkey_type);
-		if (a->algorithm == NULL)
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
-			goto err;
-			}
-		if (a->algorithm->length == 0)
+		if (!pkey->ameth ||
+			!OBJ_find_sigid_by_algs(&signid, EVP_MD_nid(type),
+						pkey->ameth->pkey_id))
 			{
-			ASN1err(ASN1_F_ASN1_ITEM_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
-			goto err;
+			ASN1err(ASN1_F_ASN1_ITEM_SIGN,
+				ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+			return 0;
 			}
 		}
+	else
+		signid = type->pkey_type;
+
+	if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL)
+		paramtype = V_ASN1_NULL;
+	else
+		paramtype = V_ASN1_UNDEF;
+
+	if (algor1)
+		X509_ALGOR_set0(algor1, OBJ_nid2obj(signid), paramtype, NULL);
+	if (algor2)
+		X509_ALGOR_set0(algor2, OBJ_nid2obj(signid), paramtype, NULL);
+
+	EVP_MD_CTX_init(&ctx);
 	inl=ASN1_item_i2d(asn,&buf_in, it);
 	outll=outl=EVP_PKEY_size(pkey);
 	buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl);
diff --git a/crypto/asn1/a_verify.c b/crypto/asn1/a_verify.c
index fdce6e4380..4885539c26 100644
--- a/crypto/asn1/a_verify.c
+++ b/crypto/asn1/a_verify.c
@@ -60,6 +60,7 @@
 #include <time.h>
 
 #include "cryptlib.h"
+#include "asn1_locl.h"
 
 #ifndef NO_SYS_TYPES_H
 # include <sys/types.h>
@@ -129,19 +130,34 @@ int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, ASN1_BIT_STRING *signat
 	     void *asn, EVP_PKEY *pkey)
 	{
 	EVP_MD_CTX ctx;
-	const EVP_MD *type;
+	const EVP_MD *type = NULL;
 	unsigned char *buf_in=NULL;
-	int ret= -1,i,inl;
+	int ret= -1,inl;
 
-	EVP_MD_CTX_init(&ctx);
-	i=OBJ_obj2nid(a->algorithm);
-	type=EVP_get_digestbyname(OBJ_nid2sn(i));
+	int mdnid, pknid;
+
+	/* Convert signature OID into digest and public key OIDs */
+
+	if (!OBJ_find_sigid_algs(OBJ_obj2nid(a->algorithm), &mdnid, &pknid))
+		{
+		ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+		goto err;
+		}
+	type=EVP_get_digestbynid(mdnid);
 	if (type == NULL)
 		{
 		ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
 		goto err;
 		}
 
+	/* Check public key OID matches public key type */
+	if (EVP_PKEY_type(pknid) != pkey->ameth->pkey_id)
+		{
+		ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_WRONG_PUBLIC_KEY_TYPE);
+		goto err;
+		}
+
+	EVP_MD_CTX_init(&ctx);
 	if (!EVP_VerifyInit_ex(&ctx,type, NULL))
 		{
 		ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB);
diff --git a/crypto/asn1/asn1.h b/crypto/asn1/asn1.h
index 8aa7d3b09d..ea57f77861 100644
--- a/crypto/asn1/asn1.h
+++ b/crypto/asn1/asn1.h
@@ -1176,6 +1176,7 @@ void ERR_load_ASN1_strings(void);
 #define ASN1_R_DECODE_ERROR				 110
 #define ASN1_R_DECODING_ERROR				 111
 #define ASN1_R_DEPTH_EXCEEDED				 174
+#define ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED	 198
 #define ASN1_R_ENCODE_ERROR				 112
 #define ASN1_R_ERROR_GETTING_TIME			 173
 #define ASN1_R_ERROR_LOADING_SECTION			 172
@@ -1251,6 +1252,7 @@ void ERR_load_ASN1_strings(void);
 #define ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM		 161
 #define ASN1_R_UNKNOWN_OBJECT_TYPE			 162
 #define ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE			 163
+#define ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM		 199
 #define ASN1_R_UNKNOWN_TAG				 194
 #define ASN1_R_UNKOWN_FORMAT				 195
 #define ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE		 164
@@ -1258,6 +1260,7 @@ void ERR_load_ASN1_strings(void);
 #define ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM		 166
 #define ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE		 167
 #define ASN1_R_UNSUPPORTED_TYPE				 196
+#define ASN1_R_WRONG_PUBLIC_KEY_TYPE			 200
 #define ASN1_R_WRONG_TAG				 168
 #define ASN1_R_WRONG_TYPE				 169
 
diff --git a/crypto/asn1/asn1_err.c b/crypto/asn1/asn1_err.c
index bef2519e65..8b1a651a92 100644
--- a/crypto/asn1/asn1_err.c
+++ b/crypto/asn1/asn1_err.c
@@ -93,7 +93,7 @@ static ERR_STRING_DATA ASN1_str_functs[]=
 {ERR_FUNC(ASN1_F_ASN1_GENERALIZEDTIME_SET),	"ASN1_GENERALIZEDTIME_set"},
 {ERR_FUNC(ASN1_F_ASN1_GENERATE_V3),	"ASN1_generate_v3"},
 {ERR_FUNC(ASN1_F_ASN1_GET_OBJECT),	"ASN1_get_object"},
-{ERR_FUNC(ASN1_F_ASN1_HEADER_NEW),	"ASN1_HEADER_new"},
+{ERR_FUNC(ASN1_F_ASN1_HEADER_NEW),	"ASN1_HEADER_NEW"},
 {ERR_FUNC(ASN1_F_ASN1_I2D_BIO),	"ASN1_i2d_bio"},
 {ERR_FUNC(ASN1_F_ASN1_I2D_FP),	"ASN1_i2d_fp"},
 {ERR_FUNC(ASN1_F_ASN1_INTEGER_SET),	"ASN1_INTEGER_set"},
@@ -111,7 +111,7 @@ static ERR_STRING_DATA ASN1_str_functs[]=
 {ERR_FUNC(ASN1_F_ASN1_MBSTRING_NCOPY),	"ASN1_mbstring_ncopy"},
 {ERR_FUNC(ASN1_F_ASN1_OBJECT_NEW),	"ASN1_OBJECT_new"},
 {ERR_FUNC(ASN1_F_ASN1_PACK_STRING),	"ASN1_pack_string"},
-{ERR_FUNC(ASN1_F_ASN1_PCTX_NEW),	"ASN1_PCTX_NEW"},
+{ERR_FUNC(ASN1_F_ASN1_PCTX_NEW),	"ASN1_PCTX_new"},
 {ERR_FUNC(ASN1_F_ASN1_PKCS5_PBE_SET),	"ASN1_PKCS5_PBE_SET"},
 {ERR_FUNC(ASN1_F_ASN1_SEQ_PACK),	"ASN1_seq_pack"},
 {ERR_FUNC(ASN1_F_ASN1_SEQ_UNPACK),	"ASN1_seq_unpack"},
@@ -123,7 +123,7 @@ static ERR_STRING_DATA ASN1_str_functs[]=
 {ERR_FUNC(ASN1_F_ASN1_TEMPLATE_EX_D2I),	"ASN1_TEMPLATE_EX_D2I"},
 {ERR_FUNC(ASN1_F_ASN1_TEMPLATE_NEW),	"ASN1_TEMPLATE_NEW"},
 {ERR_FUNC(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I),	"ASN1_TEMPLATE_NOEXP_D2I"},
-{ERR_FUNC(ASN1_F_ASN1_TIME_SET),	"ASN1_TIME_set"},
+{ERR_FUNC(ASN1_F_ASN1_TIME_SET),	"ASN1_TIME_SET"},
 {ERR_FUNC(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING),	"ASN1_TYPE_get_int_octetstring"},
 {ERR_FUNC(ASN1_F_ASN1_TYPE_GET_OCTETSTRING),	"ASN1_TYPE_get_octetstring"},
 {ERR_FUNC(ASN1_F_ASN1_UNPACK_STRING),	"ASN1_unpack_string"},
@@ -140,7 +140,7 @@ static ERR_STRING_DATA ASN1_str_functs[]=
 {ERR_FUNC(ASN1_F_D2I_ASN1_BOOLEAN),	"d2i_ASN1_BOOLEAN"},
 {ERR_FUNC(ASN1_F_D2I_ASN1_BYTES),	"d2i_ASN1_bytes"},
 {ERR_FUNC(ASN1_F_D2I_ASN1_GENERALIZEDTIME),	"D2I_ASN1_GENERALIZEDTIME"},
-{ERR_FUNC(ASN1_F_D2I_ASN1_HEADER),	"d2i_ASN1_HEADER"},
+{ERR_FUNC(ASN1_F_D2I_ASN1_HEADER),	"D2I_ASN1_HEADER"},
 {ERR_FUNC(ASN1_F_D2I_ASN1_INTEGER),	"D2I_ASN1_INTEGER"},
 {ERR_FUNC(ASN1_F_D2I_ASN1_OBJECT),	"d2i_ASN1_OBJECT"},
 {ERR_FUNC(ASN1_F_D2I_ASN1_SET),	"d2i_ASN1_SET"},
@@ -168,10 +168,10 @@ static ERR_STRING_DATA ASN1_str_functs[]=
 {ERR_FUNC(ASN1_F_OID_MODULE_INIT),	"OID_MODULE_INIT"},
 {ERR_FUNC(ASN1_F_PARSE_TAGGING),	"PARSE_TAGGING"},
 {ERR_FUNC(ASN1_F_PKCS5_PBE2_SET),	"PKCS5_pbe2_set"},
-{ERR_FUNC(ASN1_F_PKCS5_PBE_SET),	"PKCS5_pbe_set"},
+{ERR_FUNC(ASN1_F_PKCS5_PBE_SET),	"PKCS5_PBE_SET"},
 {ERR_FUNC(ASN1_F_X509_CINF_NEW),	"X509_CINF_NEW"},
-{ERR_FUNC(ASN1_F_X509_CRL_ADD0_REVOKED),	"X509_CRL_add0_revoked"},
-{ERR_FUNC(ASN1_F_X509_INFO_NEW),	"X509_INFO_new"},
+{ERR_FUNC(ASN1_F_X509_CRL_ADD0_REVOKED),	"X509_CRL_ADD0_REVOKED"},
+{ERR_FUNC(ASN1_F_X509_INFO_NEW),	"X509_INFO_NEW"},
 {ERR_FUNC(ASN1_F_X509_NAME_ENCODE),	"X509_NAME_ENCODE"},
 {ERR_FUNC(ASN1_F_X509_NAME_EX_D2I),	"X509_NAME_EX_D2I"},
 {ERR_FUNC(ASN1_F_X509_NAME_EX_NEW),	"X509_NAME_EX_NEW"},
@@ -196,6 +196,7 @@ static ERR_STRING_DATA ASN1_str_reasons[]=
 {ERR_REASON(ASN1_R_DECODE_ERROR)         ,"decode error"},
 {ERR_REASON(ASN1_R_DECODING_ERROR)       ,"decoding error"},
 {ERR_REASON(ASN1_R_DEPTH_EXCEEDED)       ,"depth exceeded"},
+{ERR_REASON(ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED),"digest and key type not supported"},
 {ERR_REASON(ASN1_R_ENCODE_ERROR)         ,"encode error"},
 {ERR_REASON(ASN1_R_ERROR_GETTING_TIME)   ,"error getting time"},
 {ERR_REASON(ASN1_R_ERROR_LOADING_SECTION),"error loading section"},
@@ -271,6 +272,7 @@ static ERR_STRING_DATA ASN1_str_reasons[]=
 {ERR_REASON(ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM),"unknown message digest algorithm"},
 {ERR_REASON(ASN1_R_UNKNOWN_OBJECT_TYPE)  ,"unknown object type"},
 {ERR_REASON(ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE),"unknown public key type"},
+{ERR_REASON(ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM),"unknown signature algorithm"},
 {ERR_REASON(ASN1_R_UNKNOWN_TAG)          ,"unknown tag"},
 {ERR_REASON(ASN1_R_UNKOWN_FORMAT)        ,"unkown format"},
 {ERR_REASON(ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE),"unsupported any defined by type"},
@@ -278,6 +280,7 @@ static ERR_STRING_DATA ASN1_str_reasons[]=
 {ERR_REASON(ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM),"unsupported encryption algorithm"},
 {ERR_REASON(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE),"unsupported public key type"},
 {ERR_REASON(ASN1_R_UNSUPPORTED_TYPE)     ,"unsupported type"},
+{ERR_REASON(ASN1_R_WRONG_PUBLIC_KEY_TYPE),"wrong public key type"},
 {ERR_REASON(ASN1_R_WRONG_TAG)            ,"wrong tag"},
 {ERR_REASON(ASN1_R_WRONG_TYPE)           ,"wrong type"},
 {0,NULL}
diff --git a/crypto/evp/evp.h b/crypto/evp/evp.h
index e054d211f6..6ec2fa798a 100644
--- a/crypto/evp/evp.h
+++ b/crypto/evp/evp.h
@@ -188,6 +188,15 @@ typedef int evp_verify_method(int type,const unsigned char *m,
 #define EVP_MD_FLAG_ONESHOT	0x0001 /* digest can only handle a single
 					* block */
 
+#define EVP_MD_FLAG_PKEY_DIGEST	0x0002 /* digest is a "clone" digest used
+					* which is a copy of an existing
+					* one for a specific public key type.
+					* EVP_dss1() etc */
+
+/* Digest uses EVP_PKEY_METHOD for signing instead of MD specific signing */
+
+#define EVP_MD_FLAG_PKEY_METHOD_SIGNATURE	0x0004
+
 #define EVP_PKEY_NULL_method	NULL,NULL,{0,0,0,0}
 
 #ifndef OPENSSL_NO_DSA
@@ -792,6 +801,7 @@ void EVP_PBE_cleanup(void);
 
 #define ASN1_PKEY_ALIAS		0x1
 #define ASN1_PKEY_DYNAMIC	0x2
+#define ASN1_PKEY_SIGPARAM_NULL	0x4
 
 #define ASN1_PKEY_CTRL_PKCS7_SIGN	0x1
 
diff --git a/crypto/evp/m_dss.c b/crypto/evp/m_dss.c
index a948c77fa4..48c2689504 100644
--- a/crypto/evp/m_dss.c
+++ b/crypto/evp/m_dss.c
@@ -81,7 +81,7 @@ static const EVP_MD dsa_md=
 	NID_dsaWithSHA,
 	NID_dsaWithSHA,
 	SHA_DIGEST_LENGTH,
-	0,
+	EVP_MD_FLAG_PKEY_DIGEST,
 	init,
 	update,
 	final,
diff --git a/crypto/evp/m_dss1.c b/crypto/evp/m_dss1.c
index c12e13972b..4f03fb70e0 100644
--- a/crypto/evp/m_dss1.c
+++ b/crypto/evp/m_dss1.c
@@ -82,7 +82,7 @@ static const EVP_MD dss1_md=
 	NID_dsa,
 	NID_dsaWithSHA1,
 	SHA_DIGEST_LENGTH,
-	0,
+	EVP_MD_FLAG_PKEY_DIGEST,
 	init,
 	update,
 	final,
diff --git a/crypto/evp/m_ecdsa.c b/crypto/evp/m_ecdsa.c
index fad270faca..8d87a49ebe 100644
--- a/crypto/evp/m_ecdsa.c
+++ b/crypto/evp/m_ecdsa.c
@@ -130,7 +130,7 @@ static const EVP_MD ecdsa_md=
 	NID_ecdsa_with_SHA1,
 	NID_ecdsa_with_SHA1,
 	SHA_DIGEST_LENGTH,
-	0,
+	EVP_MD_FLAG_PKEY_DIGEST,
 	init,
 	update,
 	final,
diff --git a/crypto/evp/m_sha1.c b/crypto/evp/m_sha1.c
index 4679b1c463..41c8d3dfe2 100644
--- a/crypto/evp/m_sha1.c
+++ b/crypto/evp/m_sha1.c
@@ -82,7 +82,7 @@ static const EVP_MD sha1_md=
 	NID_sha1,
 	NID_sha1WithRSAEncryption,
 	SHA_DIGEST_LENGTH,
-	0,
+	EVP_MD_FLAG_PKEY_METHOD_SIGNATURE,
 	init,
 	update,
 	final,
diff --git a/crypto/evp/p_sign.c b/crypto/evp/p_sign.c
index e4ae5906f5..54ad0fc7f7 100644
--- a/crypto/evp/p_sign.c
+++ b/crypto/evp/p_sign.c
@@ -88,6 +88,28 @@ int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, unsigned int *siglen,
 	EVP_MD_CTX_copy_ex(&tmp_ctx,ctx);   
 	EVP_DigestFinal_ex(&tmp_ctx,&(m[0]),&m_len);
 	EVP_MD_CTX_cleanup(&tmp_ctx);
+
+	if (ctx->digest->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE)
+		{
+		EVP_PKEY_CTX *pkctx = NULL;
+		int sltmp = EVP_PKEY_size(pkey);
+		i = 0;
+		pkctx = EVP_PKEY_CTX_new(pkey, NULL);
+		if (!pkctx)
+			goto err;
+		if (EVP_PKEY_sign_init(pkctx) <= 0)
+			goto err;
+		if (EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) <= 0)
+			goto err;
+		if (EVP_PKEY_sign(pkctx, sigret, &sltmp, m, m_len) <= 0)
+			goto err;
+		*siglen = sltmp;
+		i = 1;
+		err:
+		EVP_PKEY_CTX_free(pkctx);
+		return i;
+		}
+
 	for (i=0; i<4; i++)
 		{
 		v=ctx->digest->required_pkey_type[i];
@@ -103,6 +125,7 @@ int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, unsigned int *siglen,
 		EVPerr(EVP_F_EVP_SIGNFINAL,EVP_R_WRONG_PUBLIC_KEY_TYPE);
 		return(0);
 		}
+
 	if (ctx->digest->sign == NULL)
 		{
 		EVPerr(EVP_F_EVP_SIGNFINAL,EVP_R_NO_SIGN_FUNCTION_CONFIGURED);
diff --git a/crypto/evp/p_verify.c b/crypto/evp/p_verify.c
index 21a40a375e..8db46412f3 100644
--- a/crypto/evp/p_verify.c
+++ b/crypto/evp/p_verify.c
@@ -70,6 +70,28 @@ int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
 	int i,ok=0,v;
 	MS_STATIC EVP_MD_CTX tmp_ctx;
 
+	EVP_MD_CTX_init(&tmp_ctx);
+	EVP_MD_CTX_copy_ex(&tmp_ctx,ctx);     
+	EVP_DigestFinal_ex(&tmp_ctx,&(m[0]),&m_len);
+	EVP_MD_CTX_cleanup(&tmp_ctx);
+
+	if (ctx->digest->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE)
+		{
+		EVP_PKEY_CTX *pkctx = NULL;
+		i = -1;
+		pkctx = EVP_PKEY_CTX_new(pkey, NULL);
+		if (!pkctx)
+			goto err;
+		if (EVP_PKEY_verify_init(pkctx) <= 0)
+			goto err;
+		if (EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) <= 0)
+			goto err;
+		i = EVP_PKEY_verify(pkctx, sigbuf, siglen, m, m_len);
+		err:
+		EVP_PKEY_CTX_free(pkctx);
+		return i;
+		}
+
 	for (i=0; i<4; i++)
 		{
 		v=ctx->digest->required_pkey_type[i];
@@ -85,10 +107,6 @@ int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
 		EVPerr(EVP_F_EVP_VERIFYFINAL,EVP_R_WRONG_PUBLIC_KEY_TYPE);
 		return(-1);
 		}
-	EVP_MD_CTX_init(&tmp_ctx);
-	EVP_MD_CTX_copy_ex(&tmp_ctx,ctx);     
-	EVP_DigestFinal_ex(&tmp_ctx,&(m[0]),&m_len);
-	EVP_MD_CTX_cleanup(&tmp_ctx);
         if (ctx->digest->verify == NULL)
                 {
 		EVPerr(EVP_F_EVP_VERIFYFINAL,EVP_R_NO_VERIFY_FUNCTION_CONFIGURED);
diff --git a/crypto/rsa/rsa_ameth.c b/crypto/rsa/rsa_ameth.c
index 93b9f075c4..1f913d79dc 100644
--- a/crypto/rsa/rsa_ameth.c
+++ b/crypto/rsa/rsa_ameth.c
@@ -289,7 +289,7 @@ const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] =
 		{
 		EVP_PKEY_RSA,
 		EVP_PKEY_RSA,
-		0,
+		ASN1_PKEY_SIGPARAM_NULL,
 
 		"RSA",
 		"OpenSSL RSA method",