1160814Ssimon/* crypto/ecdsa/ecdsa_sign.c */ 2160814Ssimon/* ==================================================================== 3160814Ssimon * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. 4160814Ssimon * 5160814Ssimon * Redistribution and use in source and binary forms, with or without 6160814Ssimon * modification, are permitted provided that the following conditions 7160814Ssimon * are met: 8160814Ssimon * 9160814Ssimon * 1. Redistributions of source code must retain the above copyright 10280304Sjkim * notice, this list of conditions and the following disclaimer. 11160814Ssimon * 12160814Ssimon * 2. Redistributions in binary form must reproduce the above copyright 13160814Ssimon * notice, this list of conditions and the following disclaimer in 14160814Ssimon * the documentation and/or other materials provided with the 15160814Ssimon * distribution. 16160814Ssimon * 17160814Ssimon * 3. All advertising materials mentioning features or use of this 18160814Ssimon * software must display the following acknowledgment: 19160814Ssimon * "This product includes software developed by the OpenSSL Project 20160814Ssimon * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 21160814Ssimon * 22160814Ssimon * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23160814Ssimon * endorse or promote products derived from this software without 24160814Ssimon * prior written permission. For written permission, please contact 25160814Ssimon * openssl-core@OpenSSL.org. 26160814Ssimon * 27160814Ssimon * 5. Products derived from this software may not be called "OpenSSL" 28160814Ssimon * nor may "OpenSSL" appear in their names without prior written 29160814Ssimon * permission of the OpenSSL Project. 30160814Ssimon * 31160814Ssimon * 6. Redistributions of any form whatsoever must retain the following 32160814Ssimon * acknowledgment: 33160814Ssimon * "This product includes software developed by the OpenSSL Project 34160814Ssimon * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 35160814Ssimon * 36160814Ssimon * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37160814Ssimon * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38160814Ssimon * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39160814Ssimon * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40160814Ssimon * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41160814Ssimon * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42160814Ssimon * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43160814Ssimon * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44160814Ssimon * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45160814Ssimon * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46160814Ssimon * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47160814Ssimon * OF THE POSSIBILITY OF SUCH DAMAGE. 48160814Ssimon * ==================================================================== 49160814Ssimon * 50160814Ssimon * This product includes cryptographic software written by Eric Young 51160814Ssimon * (eay@cryptsoft.com). This product includes software written by Tim 52160814Ssimon * Hudson (tjh@cryptsoft.com). 53160814Ssimon * 54160814Ssimon */ 55160814Ssimon 56160814Ssimon#include "ecs_locl.h" 57160814Ssimon#ifndef OPENSSL_NO_ENGINE 58280304Sjkim# include <openssl/engine.h> 59160814Ssimon#endif 60205128Ssimon#include <openssl/rand.h> 61160814Ssimon 62160814SsimonECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey) 63160814Ssimon{ 64280304Sjkim return ECDSA_do_sign_ex(dgst, dlen, NULL, NULL, eckey); 65160814Ssimon} 66160814Ssimon 67160814SsimonECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen, 68280304Sjkim const BIGNUM *kinv, const BIGNUM *rp, 69280304Sjkim EC_KEY *eckey) 70160814Ssimon{ 71280304Sjkim ECDSA_DATA *ecdsa = ecdsa_check(eckey); 72280304Sjkim if (ecdsa == NULL) 73280304Sjkim return NULL; 74280304Sjkim return ecdsa->meth->ecdsa_do_sign(dgst, dlen, kinv, rp, eckey); 75160814Ssimon} 76160814Ssimon 77280304Sjkimint ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char 78280304Sjkim *sig, unsigned int *siglen, EC_KEY *eckey) 79160814Ssimon{ 80280304Sjkim return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey); 81160814Ssimon} 82160814Ssimon 83280304Sjkimint ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen, unsigned char 84280304Sjkim *sig, unsigned int *siglen, const BIGNUM *kinv, 85280304Sjkim const BIGNUM *r, EC_KEY *eckey) 86160814Ssimon{ 87280304Sjkim ECDSA_SIG *s; 88280304Sjkim RAND_seed(dgst, dlen); 89280304Sjkim s = ECDSA_do_sign_ex(dgst, dlen, kinv, r, eckey); 90280304Sjkim if (s == NULL) { 91280304Sjkim *siglen = 0; 92280304Sjkim return 0; 93280304Sjkim } 94280304Sjkim *siglen = i2d_ECDSA_SIG(s, &sig); 95280304Sjkim ECDSA_SIG_free(s); 96280304Sjkim return 1; 97160814Ssimon} 98160814Ssimon 99280304Sjkimint ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, 100280304Sjkim BIGNUM **rp) 101160814Ssimon{ 102280304Sjkim ECDSA_DATA *ecdsa = ecdsa_check(eckey); 103280304Sjkim if (ecdsa == NULL) 104280304Sjkim return 0; 105280304Sjkim return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp); 106160814Ssimon} 107