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

/* evp_pkey.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999-2005 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 <stdlib.h>
#include "cryptlib.h"
#include <openssl/x509.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#include <openssl/bn.h>

#include "../asn1/asn1_locl.h"

/* Extract a private key from a PKCS8 structure */

EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)
{
	EVP_PKEY *pkey = NULL;
	ASN1_OBJECT *algoid;
	const EVP_PKEY_ASN1_METHOD *meth;
	char obj_tmp[80];

	if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
		return NULL;

	if (!(pkey = EVP_PKEY_new())) {
		EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
		return NULL;
	}

	meth = EVP_PKEY_ASN1_find(OBJ_obj2nid(algoid));

	if (meth)
		{
		if (meth->priv_decode)
			{
			if (!meth->priv_decode(pkey, p8))
				{
				EVPerr(EVP_F_EVP_PKCS82PKEY,
					EVP_R_PRIVATE_KEY_DECODE_ERROR);
				goto error;
				}
			}
		else
			{
			EVPerr(EVP_F_EVP_PKCS82PKEY,
					EVP_R_METHOD_NOT_SUPPORTED);
			goto error;
			}
		}
	else
		{
		EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
		i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
		ERR_add_error_data(2, "TYPE=", obj_tmp);
		goto error;
		}
	return pkey;

	error:
	EVP_PKEY_free (pkey);
	return NULL;
}

PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
{
	return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
}

/* Turn a private key into a PKCS8 structure */

PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
{
	PKCS8_PRIV_KEY_INFO *p8;
	const EVP_PKEY_ASN1_METHOD *meth;

	if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {	
		EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
		return NULL;
	}
	p8->broken = broken;

	meth = EVP_PKEY_ASN1_find(pkey->type);

	if (meth)
		{
		if (meth->priv_encode)
			{
			if (!meth->priv_encode(p8, pkey))
				{
				EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
					EVP_R_PRIVATE_KEY_ENCODE_ERROR);
				goto error;
				}
			}
		else
			{
			EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
					EVP_R_METHOD_NOT_SUPPORTED);
			goto error;
			}
		}
	else
		{
		EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
				EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
		goto error;
		}
	RAND_add(p8->pkey->value.octet_string->data,
		 p8->pkey->value.octet_string->length, 0.0);
	return p8;
	error:
	PKCS8_PRIV_KEY_INFO_free(p8);
	return NULL;
}

PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
{
	switch (broken) {

		case PKCS8_OK:
		p8->broken = PKCS8_OK;
		return p8;
		break;

		case PKCS8_NO_OCTET:
		p8->broken = PKCS8_NO_OCTET;
		p8->pkey->type = V_ASN1_SEQUENCE;
		return p8;
		break;

		default:
		EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
		return NULL;
	}
}

/* EVP_PKEY attribute functions */

int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
{
	return X509at_get_attr_count(key->attributes);
}

int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid,
			  int lastpos)
{
	return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
}

int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj,
			  int lastpos)
{
	return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
}

X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
{
	return X509at_get_attr(key->attributes, loc);
}

X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
{
	return X509at_delete_attr(key->attributes, loc);
}

int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
{
	if(X509at_add1_attr(&key->attributes, attr)) return 1;
	return 0;
}

int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
			const ASN1_OBJECT *obj, int type,
			const unsigned char *bytes, int len)
{
	if(X509at_add1_attr_by_OBJ(&key->attributes, obj,
				type, bytes, len)) return 1;
	return 0;
}

int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
			int nid, int type,
			const unsigned char *bytes, int len)
{
	if(X509at_add1_attr_by_NID(&key->attributes, nid,
				type, bytes, len)) return 1;
	return 0;
}

int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
			const char *attrname, int type,
			const unsigned char *bytes, int len)
{
	if(X509at_add1_attr_by_txt(&key->attributes, attrname,
				type, bytes, len)) return 1;
	return 0;
}
Commit	Line	Data
cfcefcbe DSH	1	/* evp_pkey.c */
	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 1999.
	4	*/
	5	/* ====================================================================
448be743	6	* Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
cfcefcbe DSH	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in
	17	* the documentation and/or other materials provided with the
	18	* distribution.
	19	*
	20	* 3. All advertising materials mentioning features or use of this
	21	* software must display the following acknowledgment:
	22	* "This product includes software developed by the OpenSSL Project
	23	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	24	*
	25	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	26	* endorse or promote products derived from this software without
	27	* prior written permission. For written permission, please contact
	28	* licensing@OpenSSL.org.
	29	*
	30	* 5. Products derived from this software may not be called "OpenSSL"
	31	* nor may "OpenSSL" appear in their names without prior written
	32	* permission of the OpenSSL Project.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	39	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	40	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	43	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	44	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	45	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	46	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	48	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	49	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	50	* OF THE POSSIBILITY OF SUCH DAMAGE.
	51	* ====================================================================
	52	*
	53	* This product includes cryptographic software written by Eric Young
	54	* (eay@cryptsoft.com). This product includes software written by Tim
	55	* Hudson (tjh@cryptsoft.com).
	56	*
	57	*/
	58
	59	#include <stdio.h>
	60	#include <stdlib.h>
	61	#include "cryptlib.h"
ec577822 BM	62	#include <openssl/x509.h>
ec577822 BM	63	#include <openssl/rand.h>
3eeaab4b	64	#ifndef OPENSSL_NO_RSA
60a938c6	65	#include <openssl/rsa.h>
3eeaab4b NL	66	#endif
3eeaab4b NL	67	#ifndef OPENSSL_NO_DSA
60a938c6	68	#include <openssl/dsa.h>
3eeaab4b	69	#endif
0f814687	70	#include <openssl/bn.h>
cfcefcbe	71
448be743	72	#include "../asn1/asn1_locl.h"
66430207	73
cfcefcbe DSH	74	/* Extract a private key from a PKCS8 structure */
cfcefcbe DSH	75
8afca8d9	76	EVP_PKEY EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO p8)
cfcefcbe	77	{
66430207	78	EVP_PKEY *pkey = NULL;
448be743 DSH	79	ASN1_OBJECT *algoid;
448be743 DSH	80	const EVP_PKEY_ASN1_METHOD *meth;
cfcefcbe DSH	81	char obj_tmp[80];
cfcefcbe DSH	82
448be743 DSH	83	if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
	84	return NULL;
	85
cfcefcbe DSH	86	if (!(pkey = EVP_PKEY_new())) {
	87	EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
	88	return NULL;
	89	}
4d94ae00	90
448be743	91	meth = EVP_PKEY_ASN1_find(OBJ_obj2nid(algoid));
8ee4845b	92
448be743	93	if (meth)
8ee4845b	94	{
448be743	95	if (meth->priv_decode)
4d94ae00	96	{
448be743 DSH	97	if (!meth->priv_decode(pkey, p8))
448be743 DSH	98	{
8ee4845b	99	EVPerr(EVP_F_EVP_PKCS82PKEY,
448be743 DSH	100	EVP_R_PRIVATE_KEY_DECODE_ERROR);
	101	goto error;
	102	}
4d94ae00	103	}
8ee4845b	104	else
4d94ae00	105	{
448be743 DSH	106	EVPerr(EVP_F_EVP_PKCS82PKEY,
	107	EVP_R_METHOD_NOT_SUPPORTED);
	108	goto error;
4d94ae00	109	}
8ee4845b	110	}
448be743	111	else
8ee4845b	112	{
cfcefcbe	113	EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
448be743	114	i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
cfcefcbe	115	ERR_add_error_data(2, "TYPE=", obj_tmp);
448be743 DSH	116	goto error;
448be743 DSH	117	}
cfcefcbe	118	return pkey;
448be743 DSH	119
	120	error:
	121	EVP_PKEY_free (pkey);
	122	return NULL;
cfcefcbe DSH	123	}
cfcefcbe DSH	124
66430207 DSH	125	PKCS8_PRIV_KEY_INFO EVP_PKEY2PKCS8(EVP_PKEY pkey)
	126	{
	127	return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
	128	}
	129
cfcefcbe DSH	130	/* Turn a private key into a PKCS8 structure */
cfcefcbe DSH	131
66430207	132	PKCS8_PRIV_KEY_INFO EVP_PKEY2PKCS8_broken(EVP_PKEY pkey, int broken)
cfcefcbe DSH	133	{
cfcefcbe DSH	134	PKCS8_PRIV_KEY_INFO *p8;
448be743	135	const EVP_PKEY_ASN1_METHOD *meth;
66430207	136
cfcefcbe	137	if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
8afca8d9	138	EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);
cfcefcbe DSH	139	return NULL;
cfcefcbe DSH	140	}
66430207	141	p8->broken = broken;
cfcefcbe	142
448be743	143	meth = EVP_PKEY_ASN1_find(pkey->type);
66430207	144
448be743 DSH	145	if (meth)
	146	{
	147	if (meth->priv_encode)
	148	{
	149	if (!meth->priv_encode(p8, pkey))
	150	{
	151	EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
	152	EVP_R_PRIVATE_KEY_ENCODE_ERROR);
	153	goto error;
	154	}
	155	}
	156	else
	157	{
	158	EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
	159	EVP_R_METHOD_NOT_SUPPORTED);
	160	goto error;
	161	}
cfcefcbe	162	}
448be743	163	else
4d94ae00	164	{
448be743 DSH	165	EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,
	166	EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
	167	goto error;
4d94ae00	168	}
eb952088	169	RAND_add(p8->pkey->value.octet_string->data,
875a644a	170	p8->pkey->value.octet_string->length, 0.0);
cfcefcbe	171	return p8;
448be743 DSH	172	error:
	173	PKCS8_PRIV_KEY_INFO_free(p8);
	174	return NULL;
cfcefcbe DSH	175	}
cfcefcbe DSH	176
6b691a5c	177	PKCS8_PRIV_KEY_INFO PKCS8_set_broken(PKCS8_PRIV_KEY_INFO p8, int broken)
cfcefcbe DSH	178	{
	179	switch (broken) {
	180
	181	case PKCS8_OK:
	182	p8->broken = PKCS8_OK;
	183	return p8;
	184	break;
	185
	186	case PKCS8_NO_OCTET:
	187	p8->broken = PKCS8_NO_OCTET;
	188	p8->pkey->type = V_ASN1_SEQUENCE;
	189	return p8;
	190	break;
	191
	192	default:
8afca8d9	193	EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
cfcefcbe	194	return NULL;
cfcefcbe DSH	195	}
	196	}
	197
b6995add DSH	198	/* EVP_PKEY attribute functions */
	199
	200	int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
	201	{
	202	return X509at_get_attr_count(key->attributes);
	203	}
	204
	205	int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid,
	206	int lastpos)
	207	{
	208	return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
	209	}
	210
	211	int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY key, ASN1_OBJECT obj,
	212	int lastpos)
	213	{
	214	return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
	215	}
	216
	217	X509_ATTRIBUTE EVP_PKEY_get_attr(const EVP_PKEY key, int loc)
	218	{
	219	return X509at_get_attr(key->attributes, loc);
	220	}
	221
	222	X509_ATTRIBUTE EVP_PKEY_delete_attr(EVP_PKEY key, int loc)
	223	{
	224	return X509at_delete_attr(key->attributes, loc);
	225	}
	226
	227	int EVP_PKEY_add1_attr(EVP_PKEY key, X509_ATTRIBUTE attr)
	228	{
	229	if(X509at_add1_attr(&key->attributes, attr)) return 1;
	230	return 0;
	231	}
	232
	233	int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
	234	const ASN1_OBJECT *obj, int type,
	235	const unsigned char *bytes, int len)
	236	{
	237	if(X509at_add1_attr_by_OBJ(&key->attributes, obj,
	238	type, bytes, len)) return 1;
	239	return 0;
	240	}
	241
	242	int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
	243	int nid, int type,
	244	const unsigned char *bytes, int len)
	245	{
	246	if(X509at_add1_attr_by_NID(&key->attributes, nid,
	247	type, bytes, len)) return 1;
	248	return 0;
	249	}
	250
	251	int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
	252	const char *attrname, int type,
	253	const unsigned char *bytes, int len)
	254	{
	255	if(X509at_add1_attr_by_txt(&key->attributes, attrname,
	256	type, bytes, len)) return 1;
	257	return 0;
	258	}