/* 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); }