[thirdparty/openssl.git] / crypto / dsa / dsa_asn1.c

/* dsa_asn1.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 2000.
 */
/* ====================================================================
 * Copyright (c) 2000 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/dsa.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>

/* Override the default new methods */
static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
{
	if(operation == ASN1_OP_NEW_PRE) {
		DSA_SIG *sig;
		sig = OPENSSL_malloc(sizeof(DSA_SIG));
		sig->r = NULL;
		sig->s = NULL;
		*pval = (ASN1_VALUE *)sig;
		if(sig) return 2;
		DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	return 1;
}

ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
	ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
	ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)

IMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG)

/* Override the default free and new methods */
static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
{
	if(operation == ASN1_OP_NEW_PRE) {
		*pval = (ASN1_VALUE *)DSA_new();
		if(*pval) return 2;
		return 0;
	} else if(operation == ASN1_OP_FREE_PRE) {
		DSA_free((DSA *)*pval);
		*pval = NULL;
		return 2;
	}
	return 1;
}

ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
	ASN1_SIMPLE(DSA, version, LONG),
	ASN1_SIMPLE(DSA, p, BIGNUM),
	ASN1_SIMPLE(DSA, q, BIGNUM),
	ASN1_SIMPLE(DSA, g, BIGNUM),
	ASN1_SIMPLE(DSA, pub_key, BIGNUM),
	ASN1_SIMPLE(DSA, priv_key, BIGNUM)
} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)

IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)

ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
	ASN1_SIMPLE(DSA, p, BIGNUM),
	ASN1_SIMPLE(DSA, q, BIGNUM),
	ASN1_SIMPLE(DSA, g, BIGNUM),
} ASN1_SEQUENCE_END_cb(DSA, DSAparams)

IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)

/* DSA public key is a bit trickier... its effectively a CHOICE type
 * decided by a field called write_params which can either write out
 * just the public key as an INTEGER or the parameters and public key
 * in a SEQUENCE
 */

ASN1_SEQUENCE(dsa_pub_internal) = {
	ASN1_SIMPLE(DSA, pub_key, BIGNUM),
	ASN1_SIMPLE(DSA, p, BIGNUM),
	ASN1_SIMPLE(DSA, q, BIGNUM),
	ASN1_SIMPLE(DSA, g, BIGNUM)
} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)

ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
	ASN1_SIMPLE(DSA, pub_key, BIGNUM),
	ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)

IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
Commit	Line	Data
9d6b1ce6 DSH	1	/* dsa_asn1.c */
	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 2000.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
	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	*/
a8da8918 UM	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
ec577822 BM	61	#include <openssl/dsa.h>
ec577822 BM	62	#include <openssl/asn1.h>
9d6b1ce6	63	#include <openssl/asn1t.h>
a8da8918	64
9d6b1ce6 DSH	65	/* Override the default new methods */
9d6b1ce6 DSH	66	static int sig_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it)
a8da8918	67	{
9d6b1ce6 DSH	68	if(operation == ASN1_OP_NEW_PRE) {
	69	DSA_SIG *sig;
	70	sig = OPENSSL_malloc(sizeof(DSA_SIG));
	71	sig->r = NULL;
	72	sig->s = NULL;
	73	pval = (ASN1_VALUE )sig;
	74	if(sig) return 2;
	75	DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
	76	return 0;
	77	}
	78	return 1;
a8da8918 UM	79	}
a8da8918 UM	80
9d6b1ce6 DSH	81	ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
	82	ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
	83	ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
d339187b	84	} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)
9d6b1ce6 DSH	85
	86	IMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG)
	87
	88	/* Override the default free and new methods */
	89	static int dsa_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it)
a8da8918	90	{
9d6b1ce6 DSH	91	if(operation == ASN1_OP_NEW_PRE) {
	92	pval = (ASN1_VALUE )DSA_new();
	93	if(*pval) return 2;
	94	return 0;
	95	} else if(operation == ASN1_OP_FREE_PRE) {
	96	DSA_free((DSA )pval);
	97	*pval = NULL;
	98	return 2;
	99	}
	100	return 1;
a8da8918 UM	101	}
a8da8918 UM	102
9d6b1ce6 DSH	103	ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
	104	ASN1_SIMPLE(DSA, version, LONG),
	105	ASN1_SIMPLE(DSA, p, BIGNUM),
	106	ASN1_SIMPLE(DSA, q, BIGNUM),
	107	ASN1_SIMPLE(DSA, g, BIGNUM),
	108	ASN1_SIMPLE(DSA, pub_key, BIGNUM),
	109	ASN1_SIMPLE(DSA, priv_key, BIGNUM)
d339187b	110	} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
a8da8918	111
9d6b1ce6	112	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)
a8da8918	113
9d6b1ce6 DSH	114	ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
	115	ASN1_SIMPLE(DSA, p, BIGNUM),
	116	ASN1_SIMPLE(DSA, q, BIGNUM),
	117	ASN1_SIMPLE(DSA, g, BIGNUM),
d339187b	118	} ASN1_SEQUENCE_END_cb(DSA, DSAparams)
a8da8918	119
9d6b1ce6	120	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)
a8da8918	121
9d6b1ce6 DSH	122	/* DSA public key is a bit trickier... its effectively a CHOICE type
	123	* decided by a field called write_params which can either write out
	124	* just the public key as an INTEGER or the parameters and public key
	125	* in a SEQUENCE
	126	*/
a8da8918	127
9d6b1ce6 DSH	128	ASN1_SEQUENCE(dsa_pub_internal) = {
	129	ASN1_SIMPLE(DSA, pub_key, BIGNUM),
	130	ASN1_SIMPLE(DSA, p, BIGNUM),
	131	ASN1_SIMPLE(DSA, q, BIGNUM),
	132	ASN1_SIMPLE(DSA, g, BIGNUM)
d339187b	133	} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)
a8da8918	134
9d6b1ce6 DSH	135	ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
	136	ASN1_SIMPLE(DSA, pub_key, BIGNUM),
	137	ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
d339187b	138	} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)
9d6b1ce6 DSH	139
9d6b1ce6 DSH	140	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)