mirror of
https://github.com/guanzhi/GmSSL.git
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@@ -1,60 +1,12 @@
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/* crypto/ec/ecp_nist.c */
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/*
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* Written by Nils Larsch for the OpenSSL project.
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*/
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/* ====================================================================
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* Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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* Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* ====================================================================
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* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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* Portions of this software developed by SUN MICROSYSTEMS, INC.,
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@@ -67,10 +19,6 @@
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#include <openssl/obj_mac.h>
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#include "ec_lcl.h"
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#ifdef OPENSSL_FIPS
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# include <openssl/fips.h>
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#endif
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const EC_METHOD *EC_GFp_nist_method(void)
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{
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static const EC_METHOD ret = {
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@@ -83,6 +31,7 @@ const EC_METHOD *EC_GFp_nist_method(void)
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ec_GFp_nist_group_set_curve,
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ec_GFp_simple_group_get_curve,
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ec_GFp_simple_group_get_degree,
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ec_group_simple_order_bits,
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ec_GFp_simple_group_check_discriminant,
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ec_GFp_simple_point_init,
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ec_GFp_simple_point_finish,
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@@ -110,14 +59,18 @@ const EC_METHOD *EC_GFp_nist_method(void)
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0 /* field_div */ ,
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0 /* field_encode */ ,
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0 /* field_decode */ ,
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0 /* field_set_to_one */
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0, /* field_set_to_one */
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ec_key_simple_priv2oct,
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ec_key_simple_oct2priv,
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0, /* set private */
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ec_key_simple_generate_key,
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ec_key_simple_check_key,
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ec_key_simple_generate_public_key,
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0, /* keycopy */
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0, /* keyfinish */
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ecdh_simple_compute_key
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};
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#ifdef OPENSSL_FIPS
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if (FIPS_mode())
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return fips_ec_gfp_nist_method();
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#endif
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return &ret;
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}
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@@ -133,15 +86,12 @@ int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
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{
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int ret = 0;
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BN_CTX *new_ctx = NULL;
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BIGNUM *tmp_bn;
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if (ctx == NULL)
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if ((ctx = new_ctx = BN_CTX_new()) == NULL)
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return 0;
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BN_CTX_start(ctx);
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if ((tmp_bn = BN_CTX_get(ctx)) == NULL)
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goto err;
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if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
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group->field_mod_func = BN_nist_mod_192;
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@@ -162,8 +112,7 @@ int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
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err:
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BN_CTX_end(ctx);
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if (new_ctx != NULL)
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BN_CTX_free(new_ctx);
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BN_CTX_free(new_ctx);
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return ret;
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}
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@@ -183,13 +132,12 @@ int ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
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if (!BN_mul(r, a, b, ctx))
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goto err;
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if (!group->field_mod_func(r, r, &group->field, ctx))
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if (!group->field_mod_func(r, r, group->field, ctx))
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goto err;
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ret = 1;
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err:
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if (ctx_new)
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BN_CTX_free(ctx_new);
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BN_CTX_free(ctx_new);
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return ret;
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}
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@@ -209,12 +157,11 @@ int ec_GFp_nist_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
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if (!BN_sqr(r, a, ctx))
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goto err;
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if (!group->field_mod_func(r, r, &group->field, ctx))
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if (!group->field_mod_func(r, r, group->field, ctx))
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goto err;
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ret = 1;
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err:
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if (ctx_new)
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BN_CTX_free(ctx_new);
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BN_CTX_free(ctx_new);
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return ret;
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}
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