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first commit, SM2-DSA only
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Zhi Guan
150
crypto/dsa/dsa_asn1.c
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150
crypto/dsa/dsa_asn1.c
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/* dsa_asn1.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 2000.
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*/
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/* ====================================================================
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* Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/dsa.h>
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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/* Override the default new methods */
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static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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if(operation == ASN1_OP_NEW_PRE) {
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DSA_SIG *sig;
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sig = OPENSSL_malloc(sizeof(DSA_SIG));
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if (!sig)
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{
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DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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sig->r = NULL;
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sig->s = NULL;
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*pval = (ASN1_VALUE *)sig;
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return 2;
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}
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return 1;
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}
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ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
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ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
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ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
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} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)
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IMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG)
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/* Override the default free and new methods */
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static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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if(operation == ASN1_OP_NEW_PRE) {
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*pval = (ASN1_VALUE *)DSA_new();
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if(*pval) return 2;
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return 0;
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} else if(operation == ASN1_OP_FREE_PRE) {
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DSA_free((DSA *)*pval);
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*pval = NULL;
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return 2;
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}
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return 1;
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}
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ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
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ASN1_SIMPLE(DSA, version, LONG),
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ASN1_SIMPLE(DSA, p, BIGNUM),
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ASN1_SIMPLE(DSA, q, BIGNUM),
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ASN1_SIMPLE(DSA, g, BIGNUM),
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ASN1_SIMPLE(DSA, pub_key, BIGNUM),
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ASN1_SIMPLE(DSA, priv_key, BIGNUM)
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} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
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IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)
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ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
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ASN1_SIMPLE(DSA, p, BIGNUM),
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ASN1_SIMPLE(DSA, q, BIGNUM),
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ASN1_SIMPLE(DSA, g, BIGNUM),
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} ASN1_SEQUENCE_END_cb(DSA, DSAparams)
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IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)
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/* DSA public key is a bit trickier... its effectively a CHOICE type
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* decided by a field called write_params which can either write out
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* just the public key as an INTEGER or the parameters and public key
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* in a SEQUENCE
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*/
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ASN1_SEQUENCE(dsa_pub_internal) = {
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ASN1_SIMPLE(DSA, pub_key, BIGNUM),
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ASN1_SIMPLE(DSA, p, BIGNUM),
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ASN1_SIMPLE(DSA, q, BIGNUM),
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ASN1_SIMPLE(DSA, g, BIGNUM)
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} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)
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ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
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ASN1_SIMPLE(DSA, pub_key, BIGNUM),
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ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
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} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)
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IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
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DSA *DSAparams_dup(DSA *dsa)
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{
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return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa);
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}
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