X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fec%2Fecp_nist.c;h=16c4cce313f32a2bf02b3dab689beb5cf840c3f2;hp=4d92220670857f5f3eebd3224e673945462da453;hb=5281435258b5d8201a00b4a9781bb724d99630f0;hpb=af28dd6c75cc7abaec8b5df7555f07d143d3a6d1 diff --git a/crypto/ec/ecp_nist.c b/crypto/ec/ecp_nist.c index 4d92220670..16c4cce313 100644 --- a/crypto/ec/ecp_nist.c +++ b/crypto/ec/ecp_nist.c @@ -1,135 +1,162 @@ -/* crypto/ec/ecp_nist.c */ -/* ==================================================================== - * Copyright (c) 1998-2001 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 2001-2016 The OpenSSL Project Authors. All Rights Reserved. + * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ +#include + +#include +#include #include "ec_lcl.h" -#if 0 const EC_METHOD *EC_GFp_nist_method(void) - { - static const EC_METHOD ret = { - ec_GFp_nist_group_init, - ec_GFp_nist_group_finish, - ec_GFp_nist_group_clear_finish, - ec_GFp_nist_group_copy, - ec_GFp_nist_group_set_curve_GFp, - ec_GFp_simple_group_get_curve_GFp, - ec_GFp_simple_group_set_generator, - ec_GFp_simple_group_get0_generator, - ec_GFp_simple_group_get_order, - ec_GFp_simple_group_get_cofactor, - ec_GFp_simple_group_check, - ec_GFp_simple_point_init, - ec_GFp_simple_point_finish, - ec_GFp_simple_point_clear_finish, - ec_GFp_simple_point_copy, - ec_GFp_simple_point_set_to_infinity, - ec_GFp_simple_set_Jprojective_coordinates_GFp, - ec_GFp_simple_get_Jprojective_coordinates_GFp, - ec_GFp_simple_point_set_affine_coordinates_GFp, - ec_GFp_simple_point_get_affine_coordinates_GFp, - ec_GFp_simple_set_compressed_coordinates_GFp, - ec_GFp_simple_point2oct, - ec_GFp_simple_oct2point, - ec_GFp_simple_add, - ec_GFp_simple_dbl, - ec_GFp_simple_invert, - ec_GFp_simple_is_at_infinity, - ec_GFp_simple_is_on_curve, - ec_GFp_simple_cmp, - ec_GFp_simple_make_affine, - ec_GFp_simple_points_make_affine, - ec_GFp_nist_field_mul, - ec_GFp_nist_field_sqr, - 0 /* field_encode */, - 0 /* field_decode */, - 0 /* field_set_to_one */ }; - - return &ret; - } -#endif - - -int ec_GFp_nist_group_init(EC_GROUP *group) - { - int ok; - - ok = ec_GFp_simple_group_init(group); - group->field_data1 = NULL; - return ok; - } - - -int ec_GFp_nist_group_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx); -/* TODO */ - - -void ec_GFp_nist_group_finish(EC_GROUP *group); -/* TODO */ - - -void ec_GFp_nist_group_clear_finish(EC_GROUP *group); -/* TODO */ - - -int ec_GFp_nist_group_copy(EC_GROUP *dest, const EC_GROUP *src); -/* TODO */ - - -int ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx); -/* TODO */ - - -int ec_GFp_nist_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx); -/* TODO */ +{ + static const EC_METHOD ret = { + EC_FLAGS_DEFAULT_OCT, + NID_X9_62_prime_field, + ec_GFp_simple_group_init, + ec_GFp_simple_group_finish, + ec_GFp_simple_group_clear_finish, + ec_GFp_nist_group_copy, + ec_GFp_nist_group_set_curve, + ec_GFp_simple_group_get_curve, + ec_GFp_simple_group_get_degree, + ec_group_simple_order_bits, + ec_GFp_simple_group_check_discriminant, + ec_GFp_simple_point_init, + ec_GFp_simple_point_finish, + ec_GFp_simple_point_clear_finish, + ec_GFp_simple_point_copy, + ec_GFp_simple_point_set_to_infinity, + ec_GFp_simple_set_Jprojective_coordinates_GFp, + ec_GFp_simple_get_Jprojective_coordinates_GFp, + ec_GFp_simple_point_set_affine_coordinates, + ec_GFp_simple_point_get_affine_coordinates, + 0, 0, 0, + ec_GFp_simple_add, + ec_GFp_simple_dbl, + ec_GFp_simple_invert, + ec_GFp_simple_is_at_infinity, + ec_GFp_simple_is_on_curve, + ec_GFp_simple_cmp, + ec_GFp_simple_make_affine, + ec_GFp_simple_points_make_affine, + 0 /* mul */ , + 0 /* precompute_mult */ , + 0 /* have_precompute_mult */ , + ec_GFp_nist_field_mul, + ec_GFp_nist_field_sqr, + 0 /* field_div */ , + 0 /* field_encode */ , + 0 /* field_decode */ , + 0, /* field_set_to_one */ + ec_key_simple_priv2oct, + ec_key_simple_oct2priv, + 0, /* set private */ + ec_key_simple_generate_key, + ec_key_simple_check_key, + ec_key_simple_generate_public_key, + 0, /* keycopy */ + 0, /* keyfinish */ + ecdh_simple_compute_key + }; + + return &ret; +} + +int ec_GFp_nist_group_copy(EC_GROUP *dest, const EC_GROUP *src) +{ + dest->field_mod_func = src->field_mod_func; + + return ec_GFp_simple_group_copy(dest, src); +} + +int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p, + const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) +{ + int ret = 0; + BN_CTX *new_ctx = NULL; + + if (ctx == NULL) + if ((ctx = new_ctx = BN_CTX_new()) == NULL) + return 0; + + BN_CTX_start(ctx); + + if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0) + group->field_mod_func = BN_nist_mod_192; + else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0) + group->field_mod_func = BN_nist_mod_224; + else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0) + group->field_mod_func = BN_nist_mod_256; + else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0) + group->field_mod_func = BN_nist_mod_384; + else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0) + group->field_mod_func = BN_nist_mod_521; + else { + ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME); + goto err; + } + + ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx); + + err: + BN_CTX_end(ctx); + BN_CTX_free(new_ctx); + return ret; +} + +int ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, + const BIGNUM *b, BN_CTX *ctx) +{ + int ret = 0; + BN_CTX *ctx_new = NULL; + + if (!group || !r || !a || !b) { + ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER); + goto err; + } + if (!ctx) + if ((ctx_new = ctx = BN_CTX_new()) == NULL) + goto err; + + if (!BN_mul(r, a, b, ctx)) + goto err; + if (!group->field_mod_func(r, r, group->field, ctx)) + goto err; + + ret = 1; + err: + BN_CTX_free(ctx_new); + return ret; +} + +int ec_GFp_nist_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, + BN_CTX *ctx) +{ + int ret = 0; + BN_CTX *ctx_new = NULL; + + if (!group || !r || !a) { + ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER); + goto err; + } + if (!ctx) + if ((ctx_new = ctx = BN_CTX_new()) == NULL) + goto err; + + if (!BN_sqr(r, a, ctx)) + goto err; + if (!group->field_mod_func(r, r, group->field, ctx)) + goto err; + + ret = 1; + err: + BN_CTX_free(ctx_new); + return ret; +}