1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* dsa_asn1.c */ 2e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * project 2000. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* ==================================================================== 6221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved. 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the above copyright 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the documentation and/or other materials provided with the 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * distribution. 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * software must display the following acknowledgment: 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software developed by the OpenSSL Project 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * endorse or promote products derived from this software without 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * prior written permission. For written permission, please contact 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * licensing@OpenSSL.org. 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5. Products derived from this software may not be called "OpenSSL" 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * nor may "OpenSSL" appear in their names without prior written 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * permission of the OpenSSL Project. 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 6. Redistributions of any form whatsoever must retain the following 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * acknowledgment: 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software developed by the OpenSSL Project 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OF THE POSSIBILITY OF SUCH DAMAGE. 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ==================================================================== 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This product includes cryptographic software written by Eric Young 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * (eay@cryptsoft.com). This product includes software written by Tim 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Hudson (tjh@cryptsoft.com). 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "cryptlib.h" 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/dsa.h> 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/asn1.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/asn1t.h> 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Override the default new methods */ 66221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 67221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom void *exarg) 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project{ 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(operation == ASN1_OP_NEW_PRE) { 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DSA_SIG *sig; 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig = OPENSSL_malloc(sizeof(DSA_SIG)); 72221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!sig) 73221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 74221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE); 75221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 76221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig->r = NULL; 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project sig->s = NULL; 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *pval = (ASN1_VALUE *)sig; 80221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 2; 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = { 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA_SIG, r, CBIGNUM), 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA_SIG, s, CBIGNUM) 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG) 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 90221304ee937bc0910948a8be1320cb8cc4eb6d36Brian CarlstromIMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG) 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Override the default free and new methods */ 93221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 94221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom void *exarg) 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project{ 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(operation == ASN1_OP_NEW_PRE) { 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *pval = (ASN1_VALUE *)DSA_new(); 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(*pval) return 2; 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } else if(operation == ASN1_OP_FREE_PRE) { 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DSA_free((DSA *)*pval); 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *pval = NULL; 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 2; 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = { 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, version, LONG), 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, p, BIGNUM), 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, q, BIGNUM), 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, g, BIGNUM), 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, pub_key, BIGNUM), 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, priv_key, BIGNUM) 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey) 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectIMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey) 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_SEQUENCE_cb(DSAparams, dsa_cb) = { 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, p, BIGNUM), 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, q, BIGNUM), 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, g, BIGNUM), 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} ASN1_SEQUENCE_END_cb(DSA, DSAparams) 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectIMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams) 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* DSA public key is a bit trickier... its effectively a CHOICE type 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * decided by a field called write_params which can either write out 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * just the public key as an INTEGER or the parameters and public key 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in a SEQUENCE 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_SEQUENCE(dsa_pub_internal) = { 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, pub_key, BIGNUM), 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, p, BIGNUM), 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, q, BIGNUM), 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, g, BIGNUM) 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal) 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = { 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_SIMPLE(DSA, pub_key, BIGNUM), 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_EX_COMBINE(0, 0, dsa_pub_internal) 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params) 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectIMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey) 146e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 147221304ee937bc0910948a8be1320cb8cc4eb6d36Brian CarlstromDSA *DSAparams_dup(DSA *dsa) 148e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 149221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa); 150e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 151