-/* 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 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
*
+ * Licensed under the Apache License 2.0 (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 "ec_lcl.h"
+#include <limits.h>
+#include <openssl/err.h>
+#include <openssl/obj_mac.h>
+#include "ec_lcl.h"
const EC_METHOD *EC_GFp_nist_method(void)
- {
- static const EC_METHOD ret = {
- ec_GFp_nist_group_init,
- ec_GFp_nist_group_set_curve_GFp,
- ec_GFp_nist_group_finish,
- ec_GFp_nist_group_clear_finish,
- ec_GFp_nist_group_copy,
- ec_GFp_simple_group_set_generator,
- /* TODO: 'set' and 'get' functions for EC_GROUPs */
- 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_point_set_affine_coordinates_GFp,
- ec_GFp_simple_point_get_affine_coordinates_GFp,
- /* TODO: other 'set' and 'get' functions for EC_POINTs */
- ec_GFp_simple_point2oct,
- ec_GFp_simple_oct2point,
- ec_GFp_simple_add,
- ec_GFp_simple_dbl,
- ec_GFp_simple_is_at_infinity,
- ec_GFp_simple_is_on_curve,
- ec_GFp_simple_make_affine,
- ec_GFp_nist_field_mul,
- ec_GFp_nist_field_sqr,
- ec_GFp_nist_field_encode,
- ec_GFp_nist_field_decode };
-
- return &ret;
- }
-
-
-int ec_GFp_nist_group_init(EC_GROUP *group)
- {
- int ok;
-
- ok = ec_GFp_simple_group_init(group);
- group->field_data = 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 */
-
-
-int ec_GFp_nist_field_encode(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
-/* TODO */
-
-
-int ec_GFp_nist_field_decode(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 */ ,
+ ec_GFp_simple_field_inv,
+ 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,
+ ecdsa_simple_sign_setup,
+ ecdsa_simple_sign_sig,
+ ecdsa_simple_verify_sig,
+ 0, /* field_inverse_mod_ord */
+ ec_GFp_simple_blind_coordinates,
+ ec_GFp_simple_ladder_pre,
+ ec_GFp_simple_ladder_step,
+ ec_GFp_simple_ladder_post
+ };
+
+ 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_ex(group->libctx)) == 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_ex(group->libctx)) == 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_ex(group->libctx)) == 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;
+}
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