diff options
author | Bodo Möller <bodo@openssl.org> | 2002-02-13 18:21:51 +0000 |
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committer | Bodo Möller <bodo@openssl.org> | 2002-02-13 18:21:51 +0000 |
commit | 4d94ae00d5614d64d4dd065860c4b00161a81f82 (patch) | |
tree | e993aa323ea753b3c0782439eb78f4f8c896a67e /crypto/ecdsa/ecs_lib.c | |
parent | 60d8bae30d1040a4f955e3247443b2dd4c674cde (diff) |
ECDSA support
Submitted by: Nils Larsch <nla@trustcenter.de>
Diffstat (limited to 'crypto/ecdsa/ecs_lib.c')
-rw-r--r-- | crypto/ecdsa/ecs_lib.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/crypto/ecdsa/ecs_lib.c b/crypto/ecdsa/ecs_lib.c new file mode 100644 index 0000000000..b161b6c2d2 --- /dev/null +++ b/crypto/ecdsa/ecs_lib.c @@ -0,0 +1,312 @@ +/* crypto/ecdsa/ecs_lib.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). + * + */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * 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 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 acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS 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 AUTHOR OR 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. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include "cryptlib.h" +#include "ecs_locl.h" +#include <openssl/engine.h> + +const char *ECDSA_version="ECDSA" OPENSSL_VERSION_PTEXT; + +static const ECDSA_METHOD *default_ECDSA_method = NULL; + +void ECDSA_set_default_method(const ECDSA_METHOD *meth) +{ + default_ECDSA_method = meth; +} + +const ECDSA_METHOD *ECDSA_get_default_method(void) +{ + if(!default_ECDSA_method) + default_ECDSA_method = ECDSA_OpenSSL(); + return default_ECDSA_method; +} + +ECDSA *ECDSA_new(void) +{ + return ECDSA_new_method(NULL); +} + +int ECDSA_set_method(ECDSA *ecdsa, const ECDSA_METHOD *meth) +{ + const ECDSA_METHOD *mtmp; + mtmp = ecdsa->meth; + if (mtmp->finish) mtmp->finish(ecdsa); + if (ecdsa->engine) + { + ENGINE_finish(ecdsa->engine); + ecdsa->engine = NULL; + } + ecdsa->meth = meth; + if (meth->init) meth->init(ecdsa); + return 1; +} + +ECDSA *ECDSA_new_method(ENGINE *engine) +{ + ECDSA *ret; + + ret=(ECDSA *)OPENSSL_malloc(sizeof(ECDSA)); + if (ret == NULL) + { + ECDSAerr(ECDSA_F_ECDSA_NEW,ERR_R_MALLOC_FAILURE); + return(NULL); + } + + ret->meth = ECDSA_get_default_method(); + ret->engine = engine; + if (!ret->engine) + ret->engine = ENGINE_get_default_ECDSA(); + if (ret->engine) + { + ret->meth = ENGINE_get_ECDSA(ret->engine); + if (!ret->meth) + { + ECDSAerr(ECDSA_R_ECDSA_F_ECDSA_NEW, ERR_R_ENGINE_LIB); + ENGINE_finish(ret->engine); + OPENSSL_free(ret); + return NULL; + } + } + + ret->version = 1; + ret->write_params=1; + ret->group = NULL; + + ret->pub_key = NULL; + ret->priv_key = NULL; + + ret->kinv = NULL; + ret->r = NULL; + + ret->seed = NULL; + ret->seed_len = 0; + + ret->parameter_flags = 0; + + ret->references = 1; + ret->flags = ret->meth->flags; + CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data); + if ((ret->meth->init != NULL) && !ret->meth->init(ret)) + { + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data); + OPENSSL_free(ret); + ret=NULL; + } + + return(ret); +} + +void ECDSA_free(ECDSA *r) +{ + int i; + + if (r == NULL) return; + + i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_ECDSA); +#ifdef REF_PRINT + REF_PRINT("ECDSA",r); +#endif + if (i > 0) return; +#ifdef REF_CHECK + if (i < 0) + { + fprintf(stderr,"ECDSA_free, bad reference count\n"); + abort(); + } +#endif + + if (r->meth->finish) + r->meth->finish(r); + if (r->engine) + ENGINE_finish(r->engine); + + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, r, &r->ex_data); + + if (r->group != NULL) EC_GROUP_free(r->group); + if (r->pub_key != NULL) EC_POINT_free(r->pub_key); + if (r->priv_key != NULL) BN_clear_free(r->priv_key); + if (r->kinv != NULL) BN_clear_free(r->kinv); + if (r->r != NULL) BN_clear_free(r->r); + if (r->seed != NULL) OPENSSL_free(r->seed); + OPENSSL_free(r); +} + +int ECDSA_size(const ECDSA *r) +{ + int ret,i; + ASN1_INTEGER bs; + BIGNUM *order=NULL; + unsigned char buf[4]; + + if (r == NULL || r->group == NULL) + return 0; + if ((order = BN_new()) == NULL) return 0; + if (!EC_GROUP_get_order(r->group,order,NULL)) + { + BN_clear_free(order); + return 0; + } + i=BN_num_bits(order); + bs.length=(i+7)/8; + bs.data=buf; + bs.type=V_ASN1_INTEGER; + /* If the top bit is set the asn1 encoding is 1 larger. */ + buf[0]=0xff; + + i=i2d_ASN1_INTEGER(&bs,NULL); + i+=i; /* r and s */ + ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE); + BN_clear_free(order); + return(ret); +} + +int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, + CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) +{ + return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDSA, argl, argp, + new_func, dup_func, free_func); +} + +int ECDSA_set_ex_data(ECDSA *d, int idx, void *arg) +{ + return(CRYPTO_set_ex_data(&d->ex_data,idx,arg)); +} + +void *ECDSA_get_ex_data(ECDSA *d, int idx) +{ + return(CRYPTO_get_ex_data(&d->ex_data,idx)); +} + +int ECDSA_up_ref(ECDSA *ecdsa) +{ + int i = CRYPTO_add(&ecdsa->references, 1, CRYPTO_LOCK_ECDSA); +#ifdef REF_PRINT + REF_PRINT("ECDSA",r); +#endif +#ifdef REF_CHECK + if (i < 2) + { + fprintf(stderr, "ECDSA_up_ref, bad reference count\n"); + abort(); + } +#endif + return ((i > 1) ? 1 : 0); +} + +void ECDSA_set_parameter_flags(ECDSA *ecdsa, int flag) +{ + ecdsa->parameter_flags = flag; +} + +int ECDSA_get_parameter_flags(const ECDSA *ecdsa) +{ + return ecdsa->parameter_flags; +} |