intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 168 insertions, 0 deletions

diff --git a/contrib/libs/openssl/crypto/ec/ecp_nist.c b/contrib/libs/openssl/crypto/ec/ecp_nist.c
new file mode 100644
index 0000000000..9fd01279a8
--- /dev/null
+++ b/contrib/libs/openssl/crypto/ec/ecp_nist.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2001-2019 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 <limits.h>
+
+#include <openssl/err.h>
+#include <openssl/obj_mac.h>
+#include "ec_local.h"
+
+const EC_METHOD *EC_GFp_nist_method(void)
+{
+    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,
+        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()) == 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;
+}