+++ /dev/null
-/* crypto/ecdsa/ecs_lib.c */
-/* ====================================================================
- * Copyright (c) 1998-2005 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 <string.h>
-#include "ecs_locl.h"
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-#include <openssl/err.h>
-#include <openssl/bn.h>
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-#endif
-
-const char ECDSA_version[]="ECDSA" OPENSSL_VERSION_PTEXT;
-
-static const ECDSA_METHOD *default_ECDSA_method = NULL;
-
-static void *ecdsa_data_new(void);
-static void *ecdsa_data_dup(void *);
-static void ecdsa_data_free(void *);
-
-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)
- {
-#ifdef OPENSSL_FIPS
- if (FIPS_mode())
- return FIPS_ecdsa_openssl();
- else
- return ECDSA_OpenSSL();
-#else
- default_ECDSA_method = ECDSA_OpenSSL();
-#endif
- }
- return default_ECDSA_method;
-}
-
-int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth)
-{
- ECDSA_DATA *ecdsa;
-
- ecdsa = ecdsa_check(eckey);
-
- if (ecdsa == NULL)
- return 0;
-
-#ifndef OPENSSL_NO_ENGINE
- if (ecdsa->engine)
- {
- ENGINE_finish(ecdsa->engine);
- ecdsa->engine = NULL;
- }
-#endif
- ecdsa->meth = meth;
-
- return 1;
-}
-
-static ECDSA_DATA *ECDSA_DATA_new_method(ENGINE *engine)
-{
- ECDSA_DATA *ret;
-
- ret=(ECDSA_DATA *)OPENSSL_malloc(sizeof(ECDSA_DATA));
- if (ret == NULL)
- {
- ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
-
- ret->init = NULL;
-
- ret->meth = ECDSA_get_default_method();
- ret->engine = engine;
-#ifndef OPENSSL_NO_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_F_ECDSA_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
- ENGINE_finish(ret->engine);
- OPENSSL_free(ret);
- return NULL;
- }
- }
-#endif
-
- ret->flags = ret->meth->flags;
- CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data);
-#if 0
- 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;
- }
-#endif
- return(ret);
-}
-
-static void *ecdsa_data_new(void)
-{
- return (void *)ECDSA_DATA_new_method(NULL);
-}
-
-static void *ecdsa_data_dup(void *data)
-{
- ECDSA_DATA *r = (ECDSA_DATA *)data;
-
- /* XXX: dummy operation */
- if (r == NULL)
- return NULL;
-
- return ecdsa_data_new();
-}
-
-static void ecdsa_data_free(void *data)
-{
- ECDSA_DATA *r = (ECDSA_DATA *)data;
-
-#ifndef OPENSSL_NO_ENGINE
- if (r->engine)
- ENGINE_finish(r->engine);
-#endif
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, r, &r->ex_data);
-
- OPENSSL_cleanse((void *)r, sizeof(ECDSA_DATA));
-
- OPENSSL_free(r);
-}
-
-ECDSA_DATA *ecdsa_check(EC_KEY *key)
-{
- ECDSA_DATA *ecdsa_data;
-
- void *data = EC_KEY_get_key_method_data(key, ecdsa_data_dup,
- ecdsa_data_free, ecdsa_data_free);
- if (data == NULL)
- {
- ecdsa_data = (ECDSA_DATA *)ecdsa_data_new();
- if (ecdsa_data == NULL)
- return NULL;
- data = EC_KEY_insert_key_method_data(key, (void *)ecdsa_data,
- ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free);
- if (data != NULL)
- {
- /* Another thread raced us to install the key_method
- * data and won. */
- ecdsa_data_free(ecdsa_data);
- ecdsa_data = (ECDSA_DATA *)data;
- }
- }
- else
- ecdsa_data = (ECDSA_DATA *)data;
-#ifdef OPENSSL_FIPS
- if (FIPS_mode() && !(ecdsa_data->flags & ECDSA_FLAG_FIPS_METHOD)
- && !(EC_KEY_get_flags(key) & EC_FLAG_NON_FIPS_ALLOW))
- {
- ECDSAerr(ECDSA_F_ECDSA_CHECK, ECDSA_R_NON_FIPS_METHOD);
- return NULL;
- }
-#endif
-
- return ecdsa_data;
-}
-
-int ECDSA_size(const EC_KEY *r)
-{
- int ret,i;
- ASN1_INTEGER bs;
- BIGNUM *order=NULL;
- unsigned char buf[4];
- const EC_GROUP *group;
-
- if (r == NULL)
- return 0;
- group = EC_KEY_get0_group(r);
- if (group == NULL)
- return 0;
-
- if ((order = BN_new()) == NULL) return 0;
- if (!EC_GROUP_get_order(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(EC_KEY *d, int idx, void *arg)
-{
- ECDSA_DATA *ecdsa;
- ecdsa = ecdsa_check(d);
- if (ecdsa == NULL)
- return 0;
- return(CRYPTO_set_ex_data(&ecdsa->ex_data,idx,arg));
-}
-
-void *ECDSA_get_ex_data(EC_KEY *d, int idx)
-{
- ECDSA_DATA *ecdsa;
- ecdsa = ecdsa_check(d);
- if (ecdsa == NULL)
- return NULL;
- return(CRYPTO_get_ex_data(&ecdsa->ex_data,idx));
-}
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