[thirdparty/openssl.git] / crypto / evp / p_lib.c

/* crypto/evp/p_lib.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/bn.h>
#include <openssl/err.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/asn1_mac.h>
#include <openssl/x509.h>

static void EVP_PKEY_free_it(EVP_PKEY *x);

int EVP_PKEY_bits(EVP_PKEY *pkey)
	{
	if (0)
		return 0;
#ifndef OPENSSL_NO_RSA
	else if (pkey->type == EVP_PKEY_RSA)
		return(BN_num_bits(pkey->pkey.rsa->n));
#endif
#ifndef OPENSSL_NO_DSA
	else if (pkey->type == EVP_PKEY_DSA)
		return(BN_num_bits(pkey->pkey.dsa->p));
#endif
#ifndef OPENSSL_NO_EC
	else if (pkey->type == EVP_PKEY_EC)
		{
		BIGNUM *order = BN_new();
		int ret;

		if (!order)
			{
			ERR_clear_error();
			return 0;
			}
		if (!EC_GROUP_get_order(pkey->pkey.eckey->group, order, NULL))
			{
			ERR_clear_error();
			return 0;
			}

		ret = BN_num_bits(order);
		BN_free(order);
		return ret;
		}
#endif
	return(0);
	}

int EVP_PKEY_size(EVP_PKEY *pkey)
	{
	if (pkey == NULL)
		return(0);
#ifndef OPENSSL_NO_RSA
	if (pkey->type == EVP_PKEY_RSA)
		return(RSA_size(pkey->pkey.rsa));
	else
#endif
#ifndef OPENSSL_NO_DSA
		if (pkey->type == EVP_PKEY_DSA)
		return(DSA_size(pkey->pkey.dsa));
#endif
#ifndef OPENSSL_NO_ECDSA
		if (pkey->type == EVP_PKEY_EC)
		return(ECDSA_size(pkey->pkey.eckey));
#endif

	return(0);
	}

int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
	{
#ifndef OPENSSL_NO_DSA
	if (pkey->type == EVP_PKEY_DSA)
		{
		int ret=pkey->save_parameters;

		if (mode >= 0)
			pkey->save_parameters=mode;
		return(ret);
		}
#endif
#ifndef OPENSSL_NO_EC
	if (pkey->type == EVP_PKEY_EC)
		{
		int ret = pkey->save_parameters;

		if (mode >= 0)
			pkey->save_parameters = mode;
		return(ret);
		}
#endif
	return(0);
	}

int EVP_PKEY_copy_parameters(EVP_PKEY *to, cpnst EVP_PKEY *from)
	{
	if (to->type != from->type)
		{
		EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
		goto err;
		}

	if (EVP_PKEY_missing_parameters(from))
		{
		EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
		goto err;
		}
#ifndef OPENSSL_NO_DSA
	if (to->type == EVP_PKEY_DSA)
		{
		BIGNUM *a;

		if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
		if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
		to->pkey.dsa->p=a;

		if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
		if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
		to->pkey.dsa->q=a;

		if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
		if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
		to->pkey.dsa->g=a;
		}
#endif
#ifndef OPENSSL_NO_EC
	if (to->type == EVP_PKEY_EC)
		{
		if (to->pkey.eckey->group != NULL)
			EC_GROUP_free(to->pkey.eckey->group);
		if ((to->pkey.eckey->group = EC_GROUP_new(
			EC_GROUP_method_of(from->pkey.eckey->group))) == NULL) 
			goto err;
		if (!EC_GROUP_copy(to->pkey.eckey->group,
			from->pkey.eckey->group)) goto err;
		}
#endif
	return(1);
err:
	return(0);
	}

int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
	{
#ifndef OPENSSL_NO_DSA
	if (pkey->type == EVP_PKEY_DSA)
		{
		DSA *dsa;

		dsa=pkey->pkey.dsa;
		if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
			return(1);
		}
#endif
#ifndef OPENSSL_NO_EC
	if (pkey->type == EVP_PKEY_EC)
		{
		if (pkey->pkey.eckey->group == NULL)
			return(1);
		}
#endif

	return(0);
	}

int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
	{
#ifndef OPENSSL_NO_DSA
	if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
		{
		if (	BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
			BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
			BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
			return(0);
		else
			return(1);
		}
#endif
	return(-1);
	}

int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
	{
	if (a->type != b->type)
		return -1;

	switch (a->type)
		{
#ifndef OPENSSL_NO_RSA
	case EVP_PKEY_RSA:
		if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
			|| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
			return 0;
		break;
#endif
#ifndef OPENSSL_NO_DSA
	case EVP_PKEY_DSA:
		if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
			return 0;
		break;
#endif
#ifndef OPENSSL_NO_EC
	case EVP_PKEY_EC:
		{
		int  r = EC_POINT_cmp(b->pkey.eckey->group, 
			b->pkey.eckey->pub_key,a->pkey.eckey->pub_key,NULL);
		if (r != 0)
			{
			if (r == 1)
				return 0;
			else
				return -2;
			}
		}
 		break;
#endif
#ifndef OPENSSL_NO_DH
	case EVP_PKEY_DH:
		return -2;
#endif
	default:
		return -2;
		}

	return 1;
	}

EVP_PKEY *EVP_PKEY_new(void)
	{
	EVP_PKEY *ret;

	ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
	if (ret == NULL)
		{
		EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
		return(NULL);
		}
	ret->type=EVP_PKEY_NONE;
	ret->references=1;
	ret->pkey.ptr=NULL;
	ret->attributes=NULL;
	ret->save_parameters=1;
	return(ret);
	}

int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
	{
	if (pkey == NULL) return(0);
	if (pkey->pkey.ptr != NULL)
		EVP_PKEY_free_it(pkey);
	pkey->type=EVP_PKEY_type(type);
	pkey->save_type=type;
	pkey->pkey.ptr=key;
	return(key != NULL);
	}

#ifndef OPENSSL_NO_RSA
int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
{
	int ret = EVP_PKEY_assign_RSA(pkey, key);
	if(ret)
		RSA_up_ref(key);
	return ret;
}

RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
	{
	if(pkey->type != EVP_PKEY_RSA) {
		EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
		return NULL;
	}
	RSA_up_ref(pkey->pkey.rsa);
	return pkey->pkey.rsa;
}
#endif

#ifndef OPENSSL_NO_DSA
int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
{
	int ret = EVP_PKEY_assign_DSA(pkey, key);
	if(ret)
		DSA_up_ref(key);
	return ret;
}

DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
	{
	if(pkey->type != EVP_PKEY_DSA) {
		EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
		return NULL;
	}
	DSA_up_ref(pkey->pkey.dsa);
	return pkey->pkey.dsa;
}
#endif

#ifndef OPENSSL_NO_EC

int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
{
	int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
	if (ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_EC);
		return ret;
}

EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
{
	if (pkey->type != EVP_PKEY_EC)
	{
		EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
		return NULL;
	}
	CRYPTO_add(&pkey->pkey.eckey->references, 1, CRYPTO_LOCK_EC);
	return pkey->pkey.eckey;
}
#endif


#ifndef OPENSSL_NO_DH

int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
{
	int ret = EVP_PKEY_assign_DH(pkey, key);
	if(ret)
		DH_up_ref(key);
	return ret;
}

DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
	{
	if(pkey->type != EVP_PKEY_DH) {
		EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
		return NULL;
	}
	DH_up_ref(pkey->pkey.dh);
	return pkey->pkey.dh;
}
#endif

int EVP_PKEY_type(int type)
	{
	switch (type)
		{
	case EVP_PKEY_RSA:
	case EVP_PKEY_RSA2:
		return(EVP_PKEY_RSA);
	case EVP_PKEY_DSA:
	case EVP_PKEY_DSA1:
	case EVP_PKEY_DSA2:
	case EVP_PKEY_DSA3:
	case EVP_PKEY_DSA4:
		return(EVP_PKEY_DSA);
	case EVP_PKEY_DH:
		return(EVP_PKEY_DH);
	case EVP_PKEY_EC:
		return(EVP_PKEY_EC);
	default:
		return(NID_undef);
		}
	}

void EVP_PKEY_free(EVP_PKEY *x)
	{
	int i;

	if (x == NULL) return;

	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
#ifdef REF_PRINT
	REF_PRINT("EVP_PKEY",x);
#endif
	if (i > 0) return;
#ifdef REF_CHECK
	if (i < 0)
		{
		fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
		abort();
		}
#endif
	EVP_PKEY_free_it(x);
	OPENSSL_free(x);
	}

static void EVP_PKEY_free_it(EVP_PKEY *x)
	{
	switch (x->type)
		{
#ifndef OPENSSL_NO_RSA
	case EVP_PKEY_RSA:
	case EVP_PKEY_RSA2:
		RSA_free(x->pkey.rsa);
		break;
#endif
#ifndef OPENSSL_NO_DSA
	case EVP_PKEY_DSA:
	case EVP_PKEY_DSA2:
	case EVP_PKEY_DSA3:
	case EVP_PKEY_DSA4:
		DSA_free(x->pkey.dsa);
		break;
#endif
#ifndef OPENSSL_NO_EC
	case EVP_PKEY_EC:
		EC_KEY_free(x->pkey.eckey);
		break;
#endif
#ifndef OPENSSL_NO_DH
	case EVP_PKEY_DH:
		DH_free(x->pkey.dh);
		break;
#endif
		}
	}
Commit	Line	Data
d02b48c6	1	/* crypto/evp/p_lib.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
4d94ae00 BM	61	#include <openssl/bn.h>
4d94ae00 BM	62	#include <openssl/err.h>
ec577822 BM	63	#include <openssl/objects.h>
	64	#include <openssl/evp.h>
	65	#include <openssl/asn1_mac.h>
	66	#include <openssl/x509.h>
d02b48c6	67
d02b48c6	68	static void EVP_PKEY_free_it(EVP_PKEY *x);
bb2297a4	69
6b691a5c	70	int EVP_PKEY_bits(EVP_PKEY *pkey)
58964a49	71	{
4d94ae00 BM	72	if (0)
4d94ae00 BM	73	return 0;
cf1b7d96	74	#ifndef OPENSSL_NO_RSA
4d94ae00	75	else if (pkey->type == EVP_PKEY_RSA)
58964a49	76	return(BN_num_bits(pkey->pkey.rsa->n));
58964a49	77	#endif
cf1b7d96	78	#ifndef OPENSSL_NO_DSA
4d94ae00	79	else if (pkey->type == EVP_PKEY_DSA)
58964a49	80	return(BN_num_bits(pkey->pkey.dsa->p));
4d94ae00	81	#endif
14a7cfb3 BM	82	#ifndef OPENSSL_NO_EC
14a7cfb3 BM	83	else if (pkey->type == EVP_PKEY_EC)
4d94ae00 BM	84	{
	85	BIGNUM *order = BN_new();
	86	int ret;
	87
	88	if (!order)
	89	{
	90	ERR_clear_error();
	91	return 0;
	92	}
14a7cfb3	93	if (!EC_GROUP_get_order(pkey->pkey.eckey->group, order, NULL))
4d94ae00 BM	94	{
	95	ERR_clear_error();
	96	return 0;
	97	}
	98
	99	ret = BN_num_bits(order);
	100	BN_free(order);
	101	return ret;
	102	}
58964a49 RE	103	#endif
	104	return(0);
	105	}
	106
6b691a5c	107	int EVP_PKEY_size(EVP_PKEY *pkey)
d02b48c6	108	{
92dad6cc BL	109	if (pkey == NULL)
92dad6cc BL	110	return(0);
93d9121a	111	#ifndef OPENSSL_NO_RSA
d02b48c6 RE	112	if (pkey->type == EVP_PKEY_RSA)
	113	return(RSA_size(pkey->pkey.rsa));
	114	else
	115	#endif
cf1b7d96	116	#ifndef OPENSSL_NO_DSA
d02b48c6 RE	117	if (pkey->type == EVP_PKEY_DSA)
	118	return(DSA_size(pkey->pkey.dsa));
	119	#endif
64376cd8	120	#ifndef OPENSSL_NO_ECDSA
14a7cfb3 BM	121	if (pkey->type == EVP_PKEY_EC)
14a7cfb3 BM	122	return(ECDSA_size(pkey->pkey.eckey));
4d94ae00 BM	123	#endif
4d94ae00 BM	124
d02b48c6 RE	125	return(0);
	126	}
	127
6b691a5c	128	int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
d02b48c6	129	{
cf1b7d96	130	#ifndef OPENSSL_NO_DSA
d02b48c6 RE	131	if (pkey->type == EVP_PKEY_DSA)
d02b48c6 RE	132	{
bc8a9f1f	133	int ret=pkey->save_parameters;
d02b48c6 RE	134
	135	if (mode >= 0)
	136	pkey->save_parameters=mode;
	137	return(ret);
	138	}
4d94ae00	139	#endif
5488bb61 BM	140	#ifndef OPENSSL_NO_EC
5488bb61 BM	141	if (pkey->type == EVP_PKEY_EC)
4d94ae00 BM	142	{
	143	int ret = pkey->save_parameters;
	144
	145	if (mode >= 0)
	146	pkey->save_parameters = mode;
	147	return(ret);
	148	}
d02b48c6 RE	149	#endif
	150	return(0);
	151	}
	152
af0f0f3e	153	int EVP_PKEY_copy_parameters(EVP_PKEY to, cpnst EVP_PKEY from)
d02b48c6 RE	154	{
	155	if (to->type != from->type)
	156	{
	157	EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
58964a49	158	goto err;
d02b48c6 RE	159	}
	160
	161	if (EVP_PKEY_missing_parameters(from))
	162	{
657e60fa	163	EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
58964a49	164	goto err;
d02b48c6	165	}
cf1b7d96	166	#ifndef OPENSSL_NO_DSA
d02b48c6 RE	167	if (to->type == EVP_PKEY_DSA)
	168	{
	169	BIGNUM *a;
	170
	171	if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
	172	if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
	173	to->pkey.dsa->p=a;
	174
	175	if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
	176	if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
	177	to->pkey.dsa->q=a;
	178
	179	if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
	180	if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
	181	to->pkey.dsa->g=a;
	182	}
4d94ae00	183	#endif
14a7cfb3	184	#ifndef OPENSSL_NO_EC
5488bb61	185	if (to->type == EVP_PKEY_EC)
4d94ae00	186	{
14a7cfb3 BM	187	if (to->pkey.eckey->group != NULL)
	188	EC_GROUP_free(to->pkey.eckey->group);
	189	if ((to->pkey.eckey->group = EC_GROUP_new(
	190	EC_GROUP_method_of(from->pkey.eckey->group))) == NULL)
	191	goto err;
	192	if (!EC_GROUP_copy(to->pkey.eckey->group,
	193	from->pkey.eckey->group)) goto err;
4d94ae00	194	}
d02b48c6 RE	195	#endif
	196	return(1);
	197	err:
	198	return(0);
	199	}
	200
af0f0f3e	201	int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
d02b48c6	202	{
cf1b7d96	203	#ifndef OPENSSL_NO_DSA
d02b48c6 RE	204	if (pkey->type == EVP_PKEY_DSA)
	205	{
	206	DSA *dsa;
	207
	208	dsa=pkey->pkey.dsa;
	209	if ((dsa->p == NULL) \|\| (dsa->q == NULL) \|\| (dsa->g == NULL))
	210	return(1);
	211	}
	212	#endif
14a7cfb3 BM	213	#ifndef OPENSSL_NO_EC
14a7cfb3 BM	214	if (pkey->type == EVP_PKEY_EC)
4d94ae00	215	{
14a7cfb3	216	if (pkey->pkey.eckey->group == NULL)
4d94ae00 BM	217	return(1);
	218	}
	219	#endif
	220
d02b48c6 RE	221	return(0);
	222	}
	223
af0f0f3e	224	int EVP_PKEY_cmp_parameters(const EVP_PKEY a, const EVP_PKEY b)
58964a49	225	{
cf1b7d96	226	#ifndef OPENSSL_NO_DSA
58964a49 RE	227	if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
	228	{
	229	if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) \|\|
	230	BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) \|\|
	231	BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
	232	return(0);
	233	else
	234	return(1);
	235	}
	236	#endif
	237	return(-1);
	238	}
	239
af0f0f3e	240	int EVP_PKEY_cmp(const EVP_PKEY a, const EVP_PKEY b)
e6526fbf RL	241	{
	242	if (a->type != b->type)
	243	return -1;
	244
	245	switch (a->type)
	246	{
	247	#ifndef OPENSSL_NO_RSA
	248	case EVP_PKEY_RSA:
	249	if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
	250	\|\| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
	251	return 0;
	252	break;
	253	#endif
	254	#ifndef OPENSSL_NO_DSA
	255	case EVP_PKEY_DSA:
	256	if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
	257	return 0;
	258	break;
	259	#endif
	260	#ifndef OPENSSL_NO_EC
	261	case EVP_PKEY_EC:
	262	{
	263	int r = EC_POINT_cmp(b->pkey.eckey->group,
	264	b->pkey.eckey->pub_key,a->pkey.eckey->pub_key,NULL);
	265	if (r != 0)
	266	{
	267	if (r == 1)
	268	return 0;
	269	else
	270	return -2;
	271	}
	272	}
	273	break;
	274	#endif
	275	#ifndef OPENSSL_NO_DH
	276	case EVP_PKEY_DH:
	277	return -2;
	278	#endif
	279	default:
	280	return -2;
	281	}
	282
	283	return 1;
	284	}
	285
6b691a5c	286	EVP_PKEY *EVP_PKEY_new(void)
d02b48c6 RE	287	{
	288	EVP_PKEY *ret;
	289
26a3a48d	290	ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
d02b48c6 RE	291	if (ret == NULL)
	292	{
	293	EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
	294	return(NULL);
	295	}
	296	ret->type=EVP_PKEY_NONE;
	297	ret->references=1;
	298	ret->pkey.ptr=NULL;
	299	ret->attributes=NULL;
	300	ret->save_parameters=1;
	301	return(ret);
	302	}
	303
6b691a5c	304	int EVP_PKEY_assign(EVP_PKEY pkey, int type, char key)
d02b48c6 RE	305	{
	306	if (pkey == NULL) return(0);
	307	if (pkey->pkey.ptr != NULL)
	308	EVP_PKEY_free_it(pkey);
	309	pkey->type=EVP_PKEY_type(type);
	310	pkey->save_type=type;
	311	pkey->pkey.ptr=key;
7f5b6f0f	312	return(key != NULL);
d02b48c6 RE	313	}
d02b48c6 RE	314
cf1b7d96	315	#ifndef OPENSSL_NO_RSA
c7cb16a8	316	int EVP_PKEY_set1_RSA(EVP_PKEY pkey, RSA key)
52664f50	317	{
6d3724d3	318	int ret = EVP_PKEY_assign_RSA(pkey, key);
78435364	319	if(ret)
6ac4e8bd	320	RSA_up_ref(key);
6d3724d3	321	return ret;
52664f50 DSH	322	}
52664f50 DSH	323
c7cb16a8	324	RSA EVP_PKEY_get1_RSA(EVP_PKEY pkey)
f769ce3e DSH	325	{
f769ce3e DSH	326	if(pkey->type != EVP_PKEY_RSA) {
c7cb16a8	327	EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
f769ce3e DSH	328	return NULL;
f769ce3e DSH	329	}
6ac4e8bd	330	RSA_up_ref(pkey->pkey.rsa);
f769ce3e DSH	331	return pkey->pkey.rsa;
	332	}
	333	#endif
	334
cf1b7d96	335	#ifndef OPENSSL_NO_DSA
c7cb16a8	336	int EVP_PKEY_set1_DSA(EVP_PKEY pkey, DSA key)
52664f50	337	{
6d3724d3	338	int ret = EVP_PKEY_assign_DSA(pkey, key);
78435364	339	if(ret)
6ac4e8bd	340	DSA_up_ref(key);
6d3724d3	341	return ret;
52664f50 DSH	342	}
52664f50 DSH	343
c7cb16a8	344	DSA EVP_PKEY_get1_DSA(EVP_PKEY pkey)
f769ce3e DSH	345	{
f769ce3e DSH	346	if(pkey->type != EVP_PKEY_DSA) {
c7cb16a8	347	EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
f769ce3e DSH	348	return NULL;
f769ce3e DSH	349	}
6ac4e8bd	350	DSA_up_ref(pkey->pkey.dsa);
f769ce3e DSH	351	return pkey->pkey.dsa;
	352	}
	353	#endif
	354
14a7cfb3	355	#ifndef OPENSSL_NO_EC
4d94ae00	356
14a7cfb3	357	int EVP_PKEY_set1_EC_KEY(EVP_PKEY pkey, EC_KEY key)
4d94ae00	358	{
14a7cfb3 BM	359	int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
14a7cfb3 BM	360	if (ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_EC);
4d94ae00 BM	361	return ret;
	362	}
	363
14a7cfb3	364	EC_KEY EVP_PKEY_get1_EC_KEY(EVP_PKEY pkey)
4d94ae00	365	{
14a7cfb3	366	if (pkey->type != EVP_PKEY_EC)
4d94ae00	367	{
14a7cfb3	368	EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
4d94ae00 BM	369	return NULL;
4d94ae00 BM	370	}
14a7cfb3 BM	371	CRYPTO_add(&pkey->pkey.eckey->references, 1, CRYPTO_LOCK_EC);
14a7cfb3 BM	372	return pkey->pkey.eckey;
4d94ae00 BM	373	}
	374	#endif
	375
	376
cf1b7d96	377	#ifndef OPENSSL_NO_DH
52664f50	378
c7cb16a8	379	int EVP_PKEY_set1_DH(EVP_PKEY pkey, DH key)
52664f50	380	{
6d3724d3	381	int ret = EVP_PKEY_assign_DH(pkey, key);
78435364	382	if(ret)
e815d301	383	DH_up_ref(key);
6d3724d3	384	return ret;
52664f50 DSH	385	}
52664f50 DSH	386
c7cb16a8	387	DH EVP_PKEY_get1_DH(EVP_PKEY pkey)
f769ce3e DSH	388	{
f769ce3e DSH	389	if(pkey->type != EVP_PKEY_DH) {
c7cb16a8	390	EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
f769ce3e DSH	391	return NULL;
f769ce3e DSH	392	}
e815d301	393	DH_up_ref(pkey->pkey.dh);
f769ce3e DSH	394	return pkey->pkey.dh;
	395	}
	396	#endif
	397
6b691a5c	398	int EVP_PKEY_type(int type)
d02b48c6 RE	399	{
	400	switch (type)
	401	{
	402	case EVP_PKEY_RSA:
	403	case EVP_PKEY_RSA2:
	404	return(EVP_PKEY_RSA);
	405	case EVP_PKEY_DSA:
58964a49	406	case EVP_PKEY_DSA1:
d02b48c6 RE	407	case EVP_PKEY_DSA2:
d02b48c6 RE	408	case EVP_PKEY_DSA3:
58964a49	409	case EVP_PKEY_DSA4:
d02b48c6 RE	410	return(EVP_PKEY_DSA);
	411	case EVP_PKEY_DH:
	412	return(EVP_PKEY_DH);
14a7cfb3 BM	413	case EVP_PKEY_EC:
14a7cfb3 BM	414	return(EVP_PKEY_EC);
d02b48c6 RE	415	default:
	416	return(NID_undef);
	417	}
	418	}
	419
6b691a5c	420	void EVP_PKEY_free(EVP_PKEY *x)
d02b48c6 RE	421	{
	422	int i;
	423
	424	if (x == NULL) return;
	425
	426	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
58964a49 RE	427	#ifdef REF_PRINT
	428	REF_PRINT("EVP_PKEY",x);
	429	#endif
d02b48c6 RE	430	if (i > 0) return;
	431	#ifdef REF_CHECK
	432	if (i < 0)
	433	{
	434	fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
	435	abort();
	436	}
	437	#endif
	438	EVP_PKEY_free_it(x);
26a3a48d	439	OPENSSL_free(x);
d02b48c6 RE	440	}
d02b48c6 RE	441
6b691a5c	442	static void EVP_PKEY_free_it(EVP_PKEY *x)
d02b48c6 RE	443	{
	444	switch (x->type)
	445	{
cf1b7d96	446	#ifndef OPENSSL_NO_RSA
d02b48c6 RE	447	case EVP_PKEY_RSA:
	448	case EVP_PKEY_RSA2:
	449	RSA_free(x->pkey.rsa);
	450	break;
	451	#endif
cf1b7d96	452	#ifndef OPENSSL_NO_DSA
d02b48c6 RE	453	case EVP_PKEY_DSA:
	454	case EVP_PKEY_DSA2:
	455	case EVP_PKEY_DSA3:
58964a49	456	case EVP_PKEY_DSA4:
d02b48c6 RE	457	DSA_free(x->pkey.dsa);
	458	break;
	459	#endif
14a7cfb3 BM	460	#ifndef OPENSSL_NO_EC
	461	case EVP_PKEY_EC:
	462	EC_KEY_free(x->pkey.eckey);
4d94ae00 BM	463	break;
4d94ae00 BM	464	#endif
cf1b7d96	465	#ifndef OPENSSL_NO_DH
d02b48c6 RE	466	case EVP_PKEY_DH:
	467	DH_free(x->pkey.dh);
	468	break;
	469	#endif
	470	}
	471	}
	472