0f814687b9
dh.h, dsa.h, ec.h, ecdh.h, ecdsa.h, rsa.h), as the opaque bignum types are already declared in ossl_typ.h. Add explicit includes for bn.h in those C files that need access to structure internals or API functions+macros.
254 lines
6.5 KiB
C
254 lines
6.5 KiB
C
/* 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).
|
|
*
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "ecdsa.h"
|
|
#include <openssl/engine.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/bn.h>
|
|
|
|
const char *ECDSA_version="ECDSA" OPENSSL_VERSION_PTEXT;
|
|
|
|
static void ecdsa_finish(EC_KEY *);
|
|
|
|
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;
|
|
}
|
|
|
|
int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth)
|
|
{
|
|
const ECDSA_METHOD *mtmp;
|
|
ECDSA_DATA *ecdsa;
|
|
|
|
ecdsa = ecdsa_check(eckey);
|
|
|
|
if (ecdsa == NULL)
|
|
return 0;
|
|
|
|
mtmp = ecdsa->meth;
|
|
#if 0
|
|
if (mtmp->finish)
|
|
mtmp->finish(eckey);
|
|
#endif
|
|
if (ecdsa->engine)
|
|
{
|
|
ENGINE_finish(ecdsa->engine);
|
|
ecdsa->engine = NULL;
|
|
}
|
|
ecdsa->meth = meth;
|
|
#if 0
|
|
if (meth->init)
|
|
meth->init(eckey);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
ECDSA_DATA *ECDSA_DATA_new(void)
|
|
{
|
|
return ECDSA_DATA_new_method(NULL);
|
|
}
|
|
|
|
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, ERR_R_MALLOC_FAILURE);
|
|
return(NULL);
|
|
}
|
|
|
|
ret->init = NULL;
|
|
ret->finish = ecdsa_finish;
|
|
|
|
ret->kinv = NULL;
|
|
ret->r = 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_F_ECDSA_DATA_NEW, ERR_R_ENGINE_LIB);
|
|
ENGINE_finish(ret->engine);
|
|
OPENSSL_free(ret);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
void ECDSA_DATA_free(ECDSA_DATA *r)
|
|
{
|
|
if (r->kinv)
|
|
BN_clear_free(r->kinv);
|
|
if (r->r)
|
|
BN_clear_free(r->r);
|
|
|
|
#if 0
|
|
if (r->meth->finish)
|
|
r->meth->finish(r);
|
|
#endif
|
|
if (r->engine)
|
|
ENGINE_finish(r->engine);
|
|
|
|
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)
|
|
{
|
|
if (key->meth_data)
|
|
{
|
|
if (key->meth_data->finish != ecdsa_finish)
|
|
{
|
|
key->meth_data->finish(key);
|
|
key->meth_data = (EC_KEY_METH_DATA *)ECDSA_DATA_new();
|
|
}
|
|
}
|
|
else
|
|
key->meth_data = (EC_KEY_METH_DATA *)ECDSA_DATA_new();
|
|
return (ECDSA_DATA *)key->meth_data;
|
|
}
|
|
|
|
static void ecdsa_finish(EC_KEY *key)
|
|
{
|
|
if (key->meth_data && key->meth_data->finish == ecdsa_finish)
|
|
ECDSA_DATA_free((ECDSA_DATA *)key->meth_data);
|
|
}
|
|
|
|
int ECDSA_size(const EC_KEY *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(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));
|
|
}
|