Initial DSA EVP_PKEY_METHOD. Fixup some error codes.

crypto/dsa/Makefile

@@ -18,9 +18,9 @@ APPS=
 
 LIB=$(TOP)/libcrypto.a
 LIBSRC= dsa_gen.c dsa_key.c dsa_lib.c dsa_asn1.c dsa_vrf.c dsa_sign.c \
-	dsa_err.c dsa_ossl.c dsa_depr.c dsa_ameth.c dsa_prn.c
+	dsa_err.c dsa_ossl.c dsa_depr.c dsa_ameth.c dsa_pmeth.c dsa_prn.c
 LIBOBJ= dsa_gen.o dsa_key.o dsa_lib.o dsa_asn1.o dsa_vrf.o dsa_sign.o \
-	dsa_err.o dsa_ossl.o dsa_depr.o dsa_ameth.o dsa_prn.o
+	dsa_err.o dsa_ossl.o dsa_depr.o dsa_ameth.o dsa_pmeth.o dsa_prn.o
 
 SRC= $(LIBSRC)
 

crypto/dsa/dsa.h

@@ -245,6 +245,12 @@ int	DSA_print_fp(FILE *bp, const DSA *x, int off);
 DH *DSA_dup_DH(const DSA *r);
 #endif
 
+#define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \
+	EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
+				EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, NULL)
+
+#define	EVP_PKEY_CTRL_DSA_PARAMGEN_BITS		(EVP_PKEY_ALG_CTRL + 1)
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
@@ -272,6 +278,7 @@ void ERR_load_DSA_strings(void);
 #define DSA_F_DSA_SIG_NEW				 109
 #define DSA_F_DSA_VERIFY				 108
 #define DSA_F_I2D_DSA_SIG				 111
+#define DSA_F_PKEY_DSA_CTRL				 120
 #define DSA_F_SIG_CB					 114
 
 /* Reason codes. */
@@ -279,6 +286,7 @@ void ERR_load_DSA_strings(void);
 #define DSA_R_BN_ERROR					 103
 #define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE		 100
 #define DSA_R_DECODE_ERROR				 104
+#define DSA_R_INVALID_DIGEST_TYPE			 106
 #define DSA_R_MISSING_PARAMETERS			 101
 #define DSA_R_PARAMETER_ENCODING_ERROR			 105
 

crypto/dsa/dsa_err.c

@@ -88,6 +88,7 @@ static ERR_STRING_DATA DSA_str_functs[]=
 {ERR_FUNC(DSA_F_DSA_SIG_NEW),	"DSA_SIG_new"},
 {ERR_FUNC(DSA_F_DSA_VERIFY),	"DSA_verify"},
 {ERR_FUNC(DSA_F_I2D_DSA_SIG),	"i2d_DSA_SIG"},
+{ERR_FUNC(DSA_F_PKEY_DSA_CTRL),	"PKEY_DSA_CTRL"},
 {ERR_FUNC(DSA_F_SIG_CB),	"SIG_CB"},
 {0,NULL}
 	};
@@ -98,6 +99,7 @@ static ERR_STRING_DATA DSA_str_reasons[]=
 {ERR_REASON(DSA_R_BN_ERROR)              ,"bn error"},
 {ERR_REASON(DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE),"data too large for key size"},
 {ERR_REASON(DSA_R_DECODE_ERROR)          ,"decode error"},
+{ERR_REASON(DSA_R_INVALID_DIGEST_TYPE)   ,"invalid digest type"},
 {ERR_REASON(DSA_R_MISSING_PARAMETERS)    ,"missing parameters"},
 {ERR_REASON(DSA_R_PARAMETER_ENCODING_ERROR),"parameter encoding error"},
 {0,NULL}

crypto/dsa/dsa_pmeth.c

@@ -0,0 +1,233 @@
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/rsa.h>
+#include <openssl/evp.h>
+#include "evp_locl.h"
+
+/* DSA pkey context structure */
+
+typedef struct
+	{
+	/* Parameter gen parameters */
+	int nbits;
+	/* Keygen callback info */
+	int gentmp[2];
+	/* message digest */
+	const EVP_MD *md;
+	} DSA_PKEY_CTX;
+
+static int pkey_dsa_init(EVP_PKEY_CTX *ctx)
+	{
+	DSA_PKEY_CTX *dctx;
+	dctx = OPENSSL_malloc(sizeof(DSA_PKEY_CTX));
+	if (!dctx)
+		return 0;
+	dctx->nbits = 1024;
+	dctx->md = NULL;
+
+	ctx->data = dctx;
+	ctx->keygen_info = dctx->gentmp;
+	ctx->keygen_info_count = 2;
+	
+	return 1;
+	}
+
+static void pkey_dsa_cleanup(EVP_PKEY_CTX *ctx)
+	{
+	DSA_PKEY_CTX *dctx = ctx->data;
+	if (dctx)
+		OPENSSL_free(dctx);
+	}
+
+static int pkey_dsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen,
+					const unsigned char *tbs, int tbslen)
+	{
+	int ret, type;
+	unsigned int sltmp;
+	DSA_PKEY_CTX *dctx = ctx->data;
+	DSA *dsa = ctx->pkey->pkey.dsa;
+
+	if (dctx->md)
+		type = EVP_MD_type(dctx->md);
+	else
+		type = NID_sha1;
+
+	ret = DSA_sign(type, tbs, tbslen, sig, &sltmp, dsa);
+
+	if (ret < 0)
+		return ret;
+	*siglen = sltmp;
+	return 1;
+	}
+
+static int pkey_dsa_verify(EVP_PKEY_CTX *ctx,
+					const unsigned char *sig, int siglen,
+					const unsigned char *tbs, int tbslen)
+	{
+	int ret, type;
+	DSA_PKEY_CTX *dctx = ctx->data;
+	DSA *dsa = ctx->pkey->pkey.dsa;
+
+	if (dctx->md)
+		type = EVP_MD_type(dctx->md);
+	else
+		type = NID_sha1;
+
+	ret = DSA_verify(type, tbs, tbslen, sig, siglen, dsa);
+
+	return ret;
+	}
+
+static int pkey_dsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+	{
+	DSA_PKEY_CTX *dctx = ctx->data;
+	switch (type)
+		{
+		case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
+		if (p1 < 256)
+			return -2;
+		dctx->nbits = p1;
+		return 1;
+
+		case EVP_PKEY_CTRL_MD:
+		if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1)
+			{
+			DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE);
+			return 0;
+			}
+		dctx->md = p2;
+		return 1;
+
+		default:
+		return -2;
+
+		}
+	}
+			
+static int pkey_dsa_ctrl_str(EVP_PKEY_CTX *ctx,
+			const char *type, const char *value)
+	{
+	if (!strcmp(type, "dsa_paramgen_bits"))
+		{
+		int nbits;
+		nbits = atoi(value);
+		return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits);
+		}
+	return -2;
+	}
+
+static int pkey_dsa_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
+	{
+	DSA *dsa = NULL;
+	DSA_PKEY_CTX *dctx = ctx->data;
+	BN_GENCB *pcb, cb;
+	int ret;
+	if (ctx->pkey_gencb)
+		{
+		pcb = &cb;
+		evp_pkey_set_cb_translate(pcb, ctx);
+		}
+	else
+		pcb = NULL;
+	dsa = DSA_new();
+	if (!dsa)
+		return 0;
+	ret = DSA_generate_parameters_ex(dsa, dctx->nbits, NULL, 0, NULL, NULL,
+									pcb);
+	if (ret)
+		EVP_PKEY_assign_DSA(pkey, dsa);
+	else
+		DSA_free(dsa);
+	return ret;
+	}
+
+const EVP_PKEY_METHOD dsa_pkey_meth = 
+	{
+	EVP_PKEY_DSA,
+	0,
+	pkey_dsa_init,
+	pkey_dsa_cleanup,
+
+	0,
+	pkey_dsa_paramgen,
+
+	0,0,
+
+	0,
+	pkey_dsa_sign,
+
+	0,
+	pkey_dsa_verify,
+
+	0,0,
+
+	0,0,0,0,
+
+	0,0,
+
+	0,0,
+
+	pkey_dsa_ctrl,
+	pkey_dsa_ctrl_str
+
+
+	};

crypto/evp/evp.h

@@ -1012,10 +1012,13 @@ void ERR_load_EVP_strings(void);
 #define EVP_F_EVP_PKEY2PKCS8_BROKEN			 113
 #define EVP_F_EVP_PKEY_COPY_PARAMETERS			 103
 #define EVP_F_EVP_PKEY_CTX_CTRL				 137
+#define EVP_F_EVP_PKEY_CTX_CTRL_STR			 150
 #define EVP_F_EVP_PKEY_DECRYPT				 104
 #define EVP_F_EVP_PKEY_DECRYPT_INIT			 138
+#define EVP_F_EVP_PKEY_DECRYPT_OLD			 151
 #define EVP_F_EVP_PKEY_ENCRYPT				 105
 #define EVP_F_EVP_PKEY_ENCRYPT_INIT			 139
+#define EVP_F_EVP_PKEY_ENCRYPT_OLD			 152
 #define EVP_F_EVP_PKEY_GET1_DH				 119
 #define EVP_F_EVP_PKEY_GET1_DSA				 120
 #define EVP_F_EVP_PKEY_GET1_ECDSA			 130

crypto/evp/evp_err.c

@@ -91,20 +91,23 @@ static ERR_STRING_DATA EVP_str_functs[]=
 {ERR_FUNC(EVP_F_EVP_PKEY2PKCS8_BROKEN),	"EVP_PKEY2PKCS8_broken"},
 {ERR_FUNC(EVP_F_EVP_PKEY_COPY_PARAMETERS),	"EVP_PKEY_copy_parameters"},
 {ERR_FUNC(EVP_F_EVP_PKEY_CTX_CTRL),	"EVP_PKEY_CTX_ctrl"},
+{ERR_FUNC(EVP_F_EVP_PKEY_CTX_CTRL_STR),	"EVP_PKEY_CTX_ctrl_str"},
 {ERR_FUNC(EVP_F_EVP_PKEY_DECRYPT),	"EVP_PKEY_decrypt"},
 {ERR_FUNC(EVP_F_EVP_PKEY_DECRYPT_INIT),	"EVP_PKEY_decrypt_init"},
+{ERR_FUNC(EVP_F_EVP_PKEY_DECRYPT_OLD),	"EVP_PKEY_decrypt_old"},
 {ERR_FUNC(EVP_F_EVP_PKEY_ENCRYPT),	"EVP_PKEY_encrypt"},
 {ERR_FUNC(EVP_F_EVP_PKEY_ENCRYPT_INIT),	"EVP_PKEY_encrypt_init"},
+{ERR_FUNC(EVP_F_EVP_PKEY_ENCRYPT_OLD),	"EVP_PKEY_encrypt_old"},
 {ERR_FUNC(EVP_F_EVP_PKEY_GET1_DH),	"EVP_PKEY_get1_DH"},
 {ERR_FUNC(EVP_F_EVP_PKEY_GET1_DSA),	"EVP_PKEY_get1_DSA"},
 {ERR_FUNC(EVP_F_EVP_PKEY_GET1_ECDSA),	"EVP_PKEY_GET1_ECDSA"},
 {ERR_FUNC(EVP_F_EVP_PKEY_GET1_EC_KEY),	"EVP_PKEY_get1_EC_KEY"},
 {ERR_FUNC(EVP_F_EVP_PKEY_GET1_RSA),	"EVP_PKEY_get1_RSA"},
-{ERR_FUNC(EVP_F_EVP_PKEY_KEYGEN),	"EVP_PKEY_KEYGEN"},
+{ERR_FUNC(EVP_F_EVP_PKEY_KEYGEN),	"EVP_PKEY_keygen"},
-{ERR_FUNC(EVP_F_EVP_PKEY_KEYGEN_INIT),	"EVP_PKEY_KEYGEN_INIT"},
+{ERR_FUNC(EVP_F_EVP_PKEY_KEYGEN_INIT),	"EVP_PKEY_keygen_init"},
 {ERR_FUNC(EVP_F_EVP_PKEY_NEW),	"EVP_PKEY_new"},
-{ERR_FUNC(EVP_F_EVP_PKEY_PARAMGEN),	"EVP_PKEY_PARAMGEN"},
+{ERR_FUNC(EVP_F_EVP_PKEY_PARAMGEN),	"EVP_PKEY_paramgen"},
-{ERR_FUNC(EVP_F_EVP_PKEY_PARAMGEN_INIT),	"EVP_PKEY_PARAMGEN_INIT"},
+{ERR_FUNC(EVP_F_EVP_PKEY_PARAMGEN_INIT),	"EVP_PKEY_paramgen_init"},
 {ERR_FUNC(EVP_F_EVP_PKEY_SIGN),	"EVP_PKEY_sign"},
 {ERR_FUNC(EVP_F_EVP_PKEY_SIGN_INIT),	"EVP_PKEY_sign_init"},
 {ERR_FUNC(EVP_F_EVP_PKEY_VERIFY),	"EVP_PKEY_verify"},

crypto/evp/p_dec.c

@@ -75,7 +75,7 @@ int EVP_PKEY_decrypt_old(unsigned char *key, const unsigned char *ek, int ekl,
 	if (priv->type != EVP_PKEY_RSA)
 		{
 #endif
-		EVPerr(EVP_F_EVP_PKEY_DECRYPT,EVP_R_PUBLIC_KEY_NOT_RSA);
+		EVPerr(EVP_F_EVP_PKEY_DECRYPT_OLD,EVP_R_PUBLIC_KEY_NOT_RSA);
 #ifndef OPENSSL_NO_RSA
 		goto err;
                 }

crypto/evp/p_enc.c

@@ -75,7 +75,7 @@ int EVP_PKEY_encrypt_old(unsigned char *ek, const unsigned char *key, int key_le
 	if (pubk->type != EVP_PKEY_RSA)
 		{
 #endif
-		EVPerr(EVP_F_EVP_PKEY_ENCRYPT,EVP_R_PUBLIC_KEY_NOT_RSA);
+		EVPerr(EVP_F_EVP_PKEY_ENCRYPT_OLD,EVP_R_PUBLIC_KEY_NOT_RSA);
 #ifndef OPENSSL_NO_RSA
 		goto err;
 		}

crypto/evp/pmeth_lib.c

@@ -66,11 +66,12 @@
 
 STACK *app_pkey_methods = NULL;
 
-extern EVP_PKEY_METHOD rsa_pkey_meth;
+extern EVP_PKEY_METHOD rsa_pkey_meth, dsa_pkey_meth;
 
 static const EVP_PKEY_METHOD *standard_methods[] =
 	{
-	&rsa_pkey_meth
+	&rsa_pkey_meth,
+	&dsa_pkey_meth
 	};
 
 static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
@@ -189,9 +190,10 @@ int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 					const char *name, const char *value)
 	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
+	if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str)
 		{
-		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
+		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
+						EVP_R_COMMAND_NOT_SUPPORTED);
 		return -2;
 		}
 	if (!strcmp(name, "digest"))
@@ -199,7 +201,8 @@ int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 		const EVP_MD *md;
 		if (!value || !(md = EVP_get_digestbyname(value)))
 			{
-			EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_DIGEST);
+			EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
+						EVP_R_INVALID_DIGEST);
 			return 0;
 			}
 		return EVP_PKEY_CTX_set_signature_md(ctx, md);

crypto/rsa/rsa.h

@@ -370,7 +370,7 @@ void ERR_load_RSA_strings(void);
 /* Error codes for the RSA functions. */
 
 /* Function codes. */
-#define RSA_F_CHECK_PADDING_NID				 140
+#define RSA_F_CHECK_PADDING_MD				 140
 #define RSA_F_MEMORY_LOCK				 100
 #define RSA_F_PKEY_RSA_SIGN				 142
 #define RSA_F_PKEY_RSA_VERIFYRECOVER			 141

crypto/rsa/rsa_err.c

@@ -70,7 +70,7 @@
 
 static ERR_STRING_DATA RSA_str_functs[]=
 	{
-{ERR_FUNC(RSA_F_CHECK_PADDING_NID),	"CHECK_PADDING_NID"},
+{ERR_FUNC(RSA_F_CHECK_PADDING_MD),	"CHECK_PADDING_MD"},
 {ERR_FUNC(RSA_F_MEMORY_LOCK),	"MEMORY_LOCK"},
 {ERR_FUNC(RSA_F_PKEY_RSA_SIGN),	"PKEY_RSA_SIGN"},
 {ERR_FUNC(RSA_F_PKEY_RSA_VERIFYRECOVER),	"PKEY_RSA_VERIFYRECOVER"},

crypto/rsa/rsa_pmeth.c

@@ -127,8 +127,8 @@ static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx)
 			BN_free(rctx->pub_exp);
 		if (rctx->tbuf)
 			OPENSSL_free(rctx->tbuf);
+		OPENSSL_free(rctx);
 		}
-	OPENSSL_free(rctx);
 	}
 
 static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen,
@@ -330,7 +330,7 @@ static int check_padding_md(const EVP_MD *md, int padding)
 
 	if (padding == RSA_NO_PADDING)
 		{
-		RSAerr(RSA_F_CHECK_PADDING_NID, RSA_R_INVALID_PADDING_MODE);
+		RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE);
 		return 0;
 		}
 
@@ -338,7 +338,7 @@ static int check_padding_md(const EVP_MD *md, int padding)
 		{
 		if (RSA_X931_hash_id(EVP_MD_type(md)) == -1)
 			{
-			RSAerr(RSA_F_CHECK_PADDING_NID,
+			RSAerr(RSA_F_CHECK_PADDING_MD,
 						RSA_R_INVALID_X931_DIGEST);
 			return 0;
 			}