[thirdparty/openssl.git] / crypto / asn1 / d2i_pr.c

/* crypto/asn1/d2i_pr.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/evp.h>
#include <openssl/objects.h>
#include <openssl/asn1.h>

EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, unsigned char **pp,
	     long length)
	{
	EVP_PKEY *ret;

	if ((a == NULL) || (*a == NULL))
		{
		if ((ret=EVP_PKEY_new()) == NULL)
			{
			ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_EVP_LIB);
			return(NULL);
			}
		}
	else	ret= *a;

	ret->save_type=type;
	ret->type=EVP_PKEY_type(type);
	switch (ret->type)
		{
#ifndef NO_RSA
	case EVP_PKEY_RSA:
		if ((ret->pkey.rsa=d2i_RSAPrivateKey(NULL,
			(const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */
			{
			ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB);
			goto err;
			}
		break;
#endif
#ifndef NO_DSA
	case EVP_PKEY_DSA:
		if ((ret->pkey.dsa=d2i_DSAPrivateKey(NULL,
			(const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */
			{
			ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB);
			goto err;
			}
		break;
#endif
	default:
		ASN1err(ASN1_F_D2I_PRIVATEKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
		goto err;
		/* break; */
		}
	if (a != NULL) (*a)=ret;
	return(ret);
err:
	if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret);
	return(NULL);
	}

/* This works like d2i_PrivateKey() except it automatically works out the type */

EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, unsigned char **pp,
	     long length)
{
	STACK_OF(ASN1_TYPE) *inkey;
	unsigned char *p;
	int keytype;
	p = *pp;
	/* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE):
	 * by analyzing it we can determine the passed structure: this
	 * assumes the input is surrounded by an ASN1 SEQUENCE.
	 */
	inkey = d2i_ASN1_SET_OF_ASN1_TYPE(NULL, &p, length, d2i_ASN1_TYPE, 
			ASN1_TYPE_free, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
	/* Since we only need to discern "traditional format" RSA and DSA
	 * keys we can just count the elements.
         */
	if(sk_ASN1_TYPE_num(inkey) == 6) keytype = EVP_PKEY_DSA;
	else keytype = EVP_PKEY_RSA;
	sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
	return d2i_PrivateKey(keytype, a, pp, length);
}
Commit	Line	Data
d02b48c6	1	/* crypto/asn1/d2i_pr.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"
ec577822 BM	61	#include <openssl/bn.h>
	62	#include <openssl/evp.h>
	63	#include <openssl/objects.h>
f66c3032	64	#include <openssl/asn1.h>
d02b48c6	65
6b691a5c UM	66	EVP_PKEY d2i_PrivateKey(int type, EVP_PKEY a, unsigned char *pp,
6b691a5c UM	67	long length)
d02b48c6 RE	68	{
	69	EVP_PKEY *ret;
	70
	71	if ((a == NULL) \|\| (*a == NULL))
	72	{
	73	if ((ret=EVP_PKEY_new()) == NULL)
	74	{
	75	ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_EVP_LIB);
	76	return(NULL);
	77	}
	78	}
	79	else ret= *a;
	80
	81	ret->save_type=type;
	82	ret->type=EVP_PKEY_type(type);
	83	switch (ret->type)
	84	{
	85	#ifndef NO_RSA
	86	case EVP_PKEY_RSA:
7081f3bd RL	87	if ((ret->pkey.rsa=d2i_RSAPrivateKey(NULL,
7081f3bd RL	88	(const unsigned char *)pp,length)) == NULL) / TMP UGLY CAST */
d02b48c6 RE	89	{
	90	ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB);
	91	goto err;
	92	}
	93	break;
	94	#endif
	95	#ifndef NO_DSA
	96	case EVP_PKEY_DSA:
a4aba800 RL	97	if ((ret->pkey.dsa=d2i_DSAPrivateKey(NULL,
a4aba800 RL	98	(const unsigned char *)pp,length)) == NULL) / TMP UGLY CAST */
d02b48c6 RE	99	{
	100	ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB);
	101	goto err;
	102	}
	103	break;
	104	#endif
	105	default:
	106	ASN1err(ASN1_F_D2I_PRIVATEKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
	107	goto err;
dfeab068	108	/* break; */
d02b48c6 RE	109	}
	110	if (a != NULL) (*a)=ret;
	111	return(ret);
	112	err:
	113	if ((ret != NULL) && ((a == NULL) \|\| (*a != ret))) EVP_PKEY_free(ret);
	114	return(NULL);
	115	}
	116
20432eae DSH	117	/* This works like d2i_PrivateKey() except it automatically works out the type */
	118
	119	EVP_PKEY d2i_AutoPrivateKey(EVP_PKEY a, unsigned char *pp,
	120	long length)
	121	{
	122	STACK_OF(ASN1_TYPE) *inkey;
	123	unsigned char *p;
	124	int keytype;
	125	p = *pp;
	126	/* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE):
657e60fa	127	* by analyzing it we can determine the passed structure: this
20432eae DSH	128	* assumes the input is surrounded by an ASN1 SEQUENCE.
	129	*/
	130	inkey = d2i_ASN1_SET_OF_ASN1_TYPE(NULL, &p, length, d2i_ASN1_TYPE,
	131	ASN1_TYPE_free, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
	132	/* Since we only need to discern "traditional format" RSA and DSA
	133	* keys we can just count the elements.
	134	*/
	135	if(sk_ASN1_TYPE_num(inkey) == 6) keytype = EVP_PKEY_DSA;
	136	else keytype = EVP_PKEY_RSA;
	137	sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
	138	return d2i_PrivateKey(keytype, a, pp, length);
	139	}