sl@0: /* crypto/evp/p_lib.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/bn.h>
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/asn1_mac.h>
sl@0: #include <openssl/x509.h>
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: #include <openssl/rsa.h>
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: #include <openssl/dsa.h>
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DH
sl@0: #include <openssl/dh.h>
sl@0: #endif
sl@0: 
sl@0: static void EVP_PKEY_free_it(EVP_PKEY *x);
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_bits(EVP_PKEY *pkey)
sl@0: 	{
sl@0: 	if (0)
sl@0: 		return 0;
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: 	else if (pkey->type == EVP_PKEY_RSA)
sl@0: 		return(BN_num_bits(pkey->pkey.rsa->n));
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	else if (pkey->type == EVP_PKEY_DSA)
sl@0: 		return(BN_num_bits(pkey->pkey.dsa->p));
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	else if (pkey->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		BIGNUM *order = BN_new();
sl@0: 		const EC_GROUP *group;
sl@0: 		int ret;
sl@0: 
sl@0: 		if (!order)
sl@0: 			{
sl@0: 			ERR_clear_error();
sl@0: 			return 0;
sl@0: 			}
sl@0: 		group = EC_KEY_get0_group(pkey->pkey.ec);
sl@0: 		if (!EC_GROUP_get_order(group, order, NULL))
sl@0: 			{
sl@0: 			ERR_clear_error();
sl@0: 			return 0;
sl@0: 			}
sl@0: 
sl@0: 		ret = BN_num_bits(order);
sl@0: 		BN_free(order);
sl@0: 		return ret;
sl@0: 		}
sl@0: #endif
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_size(EVP_PKEY *pkey)
sl@0: 	{
sl@0: 	if (pkey == NULL)
sl@0: 		return(0);
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: 	if (pkey->type == EVP_PKEY_RSA)
sl@0: 		return(RSA_size(pkey->pkey.rsa));
sl@0: 	else
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 		if (pkey->type == EVP_PKEY_DSA)
sl@0: 		return(DSA_size(pkey->pkey.dsa));
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_ECDSA
sl@0: 		if (pkey->type == EVP_PKEY_EC)
sl@0: 		return(ECDSA_size(pkey->pkey.ec));
sl@0: #endif
sl@0: 
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
sl@0: 	{
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	if (pkey->type == EVP_PKEY_DSA)
sl@0: 		{
sl@0: 		int ret=pkey->save_parameters;
sl@0: 
sl@0: 		if (mode >= 0)
sl@0: 			pkey->save_parameters=mode;
sl@0: 		return(ret);
sl@0: 		}
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	if (pkey->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		int ret = pkey->save_parameters;
sl@0: 
sl@0: 		if (mode >= 0)
sl@0: 			pkey->save_parameters = mode;
sl@0: 		return(ret);
sl@0: 		}
sl@0: #endif
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
sl@0: 	{
sl@0: 	if (to->type != from->type)
sl@0: 		{
sl@0: 		EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	if (EVP_PKEY_missing_parameters(from))
sl@0: 		{
sl@0: 		EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
sl@0: 		goto err;
sl@0: 		}
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	if (to->type == EVP_PKEY_DSA)
sl@0: 		{
sl@0: 		BIGNUM *a;
sl@0: 
sl@0: 		if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
sl@0: 		if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
sl@0: 		to->pkey.dsa->p=a;
sl@0: 
sl@0: 		if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
sl@0: 		if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
sl@0: 		to->pkey.dsa->q=a;
sl@0: 
sl@0: 		if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
sl@0: 		if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
sl@0: 		to->pkey.dsa->g=a;
sl@0: 		}
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	if (to->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec));
sl@0: 		if (group == NULL)
sl@0: 			goto err;
sl@0: 		if (EC_KEY_set_group(to->pkey.ec, group) == 0)
sl@0: 			goto err;
sl@0: 		EC_GROUP_free(group);
sl@0: 		}
sl@0: #endif
sl@0: 	return(1);
sl@0: err:
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
sl@0: 	{
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	if (pkey->type == EVP_PKEY_DSA)
sl@0: 		{
sl@0: 		DSA *dsa;
sl@0: 
sl@0: 		dsa=pkey->pkey.dsa;
sl@0: 		if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
sl@0: 			return(1);
sl@0: 		}
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	if (pkey->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		if (EC_KEY_get0_group(pkey->pkey.ec) == NULL)
sl@0: 			return(1);
sl@0: 		}
sl@0: #endif
sl@0: 
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
sl@0: 	{
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
sl@0: 		{
sl@0: 		if (	BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
sl@0: 			BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
sl@0: 			BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
sl@0: 			return(0);
sl@0: 		else
sl@0: 			return(1);
sl@0: 		}
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	if (a->type == EVP_PKEY_EC && b->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
sl@0: 		               *group_b = EC_KEY_get0_group(b->pkey.ec);
sl@0: 		if (EC_GROUP_cmp(group_a, group_b, NULL))
sl@0: 			return 0;
sl@0: 		else
sl@0: 			return 1;
sl@0: 		}
sl@0: #endif
sl@0: 	return(-1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
sl@0: 	{
sl@0: 	if (a->type != b->type)
sl@0: 		return -1;
sl@0: 
sl@0: 	if (EVP_PKEY_cmp_parameters(a, b) == 0)
sl@0: 		return 0;
sl@0: 
sl@0: 	switch (a->type)
sl@0: 		{
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: 	case EVP_PKEY_RSA:
sl@0: 		if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
sl@0: 			|| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
sl@0: 			return 0;
sl@0: 		break;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	case EVP_PKEY_DSA:
sl@0: 		if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
sl@0: 			return 0;
sl@0: 		break;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	case EVP_PKEY_EC:
sl@0: 		{
sl@0: 		int  r;
sl@0: 		const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
sl@0: 		const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
sl@0: 		               *pb = EC_KEY_get0_public_key(b->pkey.ec);
sl@0: 		r = EC_POINT_cmp(group, pa, pb, NULL);
sl@0: 		if (r != 0)
sl@0: 			{
sl@0: 			if (r == 1)
sl@0: 				return 0;
sl@0: 			else
sl@0: 				return -2;
sl@0: 			}
sl@0: 		}
sl@0:  		break;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DH
sl@0: 	case EVP_PKEY_DH:
sl@0: 		return -2;
sl@0: #endif
sl@0: 	default:
sl@0: 		return -2;
sl@0: 		}
sl@0: 
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C EVP_PKEY *EVP_PKEY_new(void)
sl@0: 	{
sl@0: 	EVP_PKEY *ret;
sl@0: 
sl@0: 	ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
sl@0: 	if (ret == NULL)
sl@0: 		{
sl@0: 		EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	ret->type=EVP_PKEY_NONE;
sl@0: 	ret->references=1;
sl@0: 	ret->pkey.ptr=NULL;
sl@0: 	ret->attributes=NULL;
sl@0: 	ret->save_parameters=1;
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
sl@0: 	{
sl@0: 	if (pkey == NULL) return(0);
sl@0: 	if (pkey->pkey.ptr != NULL)
sl@0: 		EVP_PKEY_free_it(pkey);
sl@0: 	pkey->type=EVP_PKEY_type(type);
sl@0: 	pkey->save_type=type;
sl@0: 	pkey->pkey.ptr=key;
sl@0: 	return(key != NULL);
sl@0: 	}
sl@0: 
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: EXPORT_C int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
sl@0: {
sl@0: 	int ret = EVP_PKEY_assign_RSA(pkey, key);
sl@0: 	if(ret)
sl@0: 		RSA_up_ref(key);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
sl@0: 	{
sl@0: 	if(pkey->type != EVP_PKEY_RSA) {
sl@0: 		EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	RSA_up_ref(pkey->pkey.rsa);
sl@0: 	return pkey->pkey.rsa;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: EXPORT_C int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
sl@0: {
sl@0: 	int ret = EVP_PKEY_assign_DSA(pkey, key);
sl@0: 	if(ret)
sl@0: 		DSA_up_ref(key);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
sl@0: 	{
sl@0: 	if(pkey->type != EVP_PKEY_DSA) {
sl@0: 		EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	DSA_up_ref(pkey->pkey.dsa);
sl@0: 	return pkey->pkey.dsa;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
sl@0: {
sl@0: 	int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
sl@0: 	if (ret)
sl@0: 		EC_KEY_up_ref(key);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
sl@0: {
sl@0: 	if (pkey->type != EVP_PKEY_EC)
sl@0: 	{
sl@0: 		EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	EC_KEY_up_ref(pkey->pkey.ec);
sl@0: 	return pkey->pkey.ec;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #ifndef OPENSSL_NO_DH
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
sl@0: {
sl@0: 	int ret = EVP_PKEY_assign_DH(pkey, key);
sl@0: 	if(ret)
sl@0: 		DH_up_ref(key);
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
sl@0: 	{
sl@0: 	if(pkey->type != EVP_PKEY_DH) {
sl@0: 		EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	DH_up_ref(pkey->pkey.dh);
sl@0: 	return pkey->pkey.dh;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: EXPORT_C int EVP_PKEY_type(int type)
sl@0: 	{
sl@0: 	switch (type)
sl@0: 		{
sl@0: 	case EVP_PKEY_RSA:
sl@0: 	case EVP_PKEY_RSA2:
sl@0: 		return(EVP_PKEY_RSA);
sl@0: 	case EVP_PKEY_DSA:
sl@0: 	case EVP_PKEY_DSA1:
sl@0: 	case EVP_PKEY_DSA2:
sl@0: 	case EVP_PKEY_DSA3:
sl@0: 	case EVP_PKEY_DSA4:
sl@0: 		return(EVP_PKEY_DSA);
sl@0: 	case EVP_PKEY_DH:
sl@0: 		return(EVP_PKEY_DH);
sl@0: 	case EVP_PKEY_EC:
sl@0: 		return(EVP_PKEY_EC);
sl@0: 	default:
sl@0: 		return(NID_undef);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void EVP_PKEY_free(EVP_PKEY *x)
sl@0: 	{
sl@0: 	int i;
sl@0: 
sl@0: 	if (x == NULL) return;
sl@0: 
sl@0: 	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
sl@0: #ifdef REF_PRINT
sl@0: 	REF_PRINT("EVP_PKEY",x);
sl@0: #endif
sl@0: 	if (i > 0) return;
sl@0: #ifdef REF_CHECK
sl@0: 	if (i < 0)
sl@0: 		{
sl@0: 		fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
sl@0: 		abort();
sl@0: 		}
sl@0: #endif
sl@0: 	EVP_PKEY_free_it(x);
sl@0: 	if (x->attributes)
sl@0: 		sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
sl@0: 	OPENSSL_free(x);
sl@0: 	}
sl@0: 
sl@0: static void EVP_PKEY_free_it(EVP_PKEY *x)
sl@0: 	{
sl@0: 	switch (x->type)
sl@0: 		{
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: 	case EVP_PKEY_RSA:
sl@0: 	case EVP_PKEY_RSA2:
sl@0: 		RSA_free(x->pkey.rsa);
sl@0: 		break;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	case EVP_PKEY_DSA:
sl@0: 	case EVP_PKEY_DSA2:
sl@0: 	case EVP_PKEY_DSA3:
sl@0: 	case EVP_PKEY_DSA4:
sl@0: 		DSA_free(x->pkey.dsa);
sl@0: 		break;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	case EVP_PKEY_EC:
sl@0: 		EC_KEY_free(x->pkey.ec);
sl@0: 		break;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DH
sl@0: 	case EVP_PKEY_DH:
sl@0: 		DH_free(x->pkey.dh);
sl@0: 		break;
sl@0: #endif
sl@0: 		}
sl@0: 	}
sl@0: