151 lines
5.1 KiB
C
151 lines
5.1 KiB
C
/* dsa_asn1.c */
|
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project 2000.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2000-2005 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 "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,
|
|
void *exarg)
|
|
{
|
|
if(operation == ASN1_OP_NEW_PRE) {
|
|
DSA_SIG *sig;
|
|
sig = OPENSSL_malloc(sizeof(DSA_SIG));
|
|
if (!sig)
|
|
{
|
|
DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
sig->r = NULL;
|
|
sig->s = NULL;
|
|
*pval = (ASN1_VALUE *)sig;
|
|
return 2;
|
|
}
|
|
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,
|
|
void *exarg)
|
|
{
|
|
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)
|
|
|
|
DSA *DSAparams_dup(DSA *dsa)
|
|
{
|
|
return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa);
|
|
}
|