| /* crypto/ecdsa/ecdsa_sign.c */ |
| /* ==================================================================== |
| * Copyright (c) 1998-2002 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 |
| * openssl-core@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 "ecs_locl.h" |
| #ifndef OPENSSL_NO_ENGINE |
| # include <openssl/engine.h> |
| #endif |
| #include <openssl/rand.h> |
| |
| ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey) |
| { |
| return ECDSA_do_sign_ex(dgst, dlen, NULL, NULL, eckey); |
| } |
| |
| ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen, |
| const BIGNUM *kinv, const BIGNUM *rp, |
| EC_KEY *eckey) |
| { |
| ECDSA_DATA *ecdsa = ecdsa_check(eckey); |
| if (ecdsa == NULL) |
| return NULL; |
| return ecdsa->meth->ecdsa_do_sign(dgst, dlen, kinv, rp, eckey); |
| } |
| |
| int ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char |
| *sig, unsigned int *siglen, EC_KEY *eckey) |
| { |
| return ECDSA_sign_ex(type, dgst, dlen, sig, siglen, NULL, NULL, eckey); |
| } |
| |
| int ECDSA_sign_ex(int type, const unsigned char *dgst, int dlen, unsigned char |
| *sig, unsigned int *siglen, const BIGNUM *kinv, |
| const BIGNUM *r, EC_KEY *eckey) |
| { |
| ECDSA_SIG *s; |
| RAND_seed(dgst, dlen); |
| s = ECDSA_do_sign_ex(dgst, dlen, kinv, r, eckey); |
| if (s == NULL) { |
| *siglen = 0; |
| return 0; |
| } |
| *siglen = i2d_ECDSA_SIG(s, &sig); |
| ECDSA_SIG_free(s); |
| return 1; |
| } |
| |
| int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx_in, BIGNUM **kinvp, |
| BIGNUM **rp) |
| { |
| ECDSA_DATA *ecdsa = ecdsa_check(eckey); |
| if (ecdsa == NULL) |
| return 0; |
| return ecdsa->meth->ecdsa_sign_setup(eckey, ctx_in, kinvp, rp); |
| } |