2 * Copyright 2011-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
12 * ECDSA low level APIs are deprecated for public use, but still ok for
15 #include "internal/deprecated.h"
19 #include <openssl/err.h>
20 #include <openssl/opensslv.h>
24 int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *point,
25 const BIGNUM *x, int y_bit, BN_CTX *ctx)
27 if (group->meth->point_set_compressed_coordinates == NULL
28 && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
29 ERR_raise(ERR_LIB_EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
32 if (!ec_point_is_compat(point, group)) {
33 ERR_raise(ERR_LIB_EC, EC_R_INCOMPATIBLE_OBJECTS);
36 if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) {
37 if (group->meth->field_type == NID_X9_62_prime_field)
38 return ossl_ec_GFp_simple_set_compressed_coordinates(group, point, x,
41 #ifdef OPENSSL_NO_EC2M
43 ERR_raise(ERR_LIB_EC, EC_R_GF2M_NOT_SUPPORTED);
47 return ossl_ec_GF2m_simple_set_compressed_coordinates(group, point,
51 return group->meth->point_set_compressed_coordinates(group, point, x,
55 #ifndef OPENSSL_NO_DEPRECATED_3_0
56 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
57 EC_POINT *point, const BIGNUM *x,
58 int y_bit, BN_CTX *ctx)
60 return EC_POINT_set_compressed_coordinates(group, point, x, y_bit, ctx);
63 # ifndef OPENSSL_NO_EC2M
64 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group,
65 EC_POINT *point, const BIGNUM *x,
66 int y_bit, BN_CTX *ctx)
68 return EC_POINT_set_compressed_coordinates(group, point, x, y_bit, ctx);
73 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point,
74 point_conversion_form_t form, unsigned char *buf,
75 size_t len, BN_CTX *ctx)
77 if (group->meth->point2oct == 0
78 && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
79 ERR_raise(ERR_LIB_EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
82 if (!ec_point_is_compat(point, group)) {
83 ERR_raise(ERR_LIB_EC, EC_R_INCOMPATIBLE_OBJECTS);
86 if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) {
87 if (group->meth->field_type == NID_X9_62_prime_field)
88 return ossl_ec_GFp_simple_point2oct(group, point, form, buf, len,
91 #ifdef OPENSSL_NO_EC2M
93 ERR_raise(ERR_LIB_EC, EC_R_GF2M_NOT_SUPPORTED);
97 return ossl_ec_GF2m_simple_point2oct(group, point,
102 return group->meth->point2oct(group, point, form, buf, len, ctx);
105 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
106 const unsigned char *buf, size_t len, BN_CTX *ctx)
108 if (group->meth->oct2point == 0
109 && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
110 ERR_raise(ERR_LIB_EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
113 if (!ec_point_is_compat(point, group)) {
114 ERR_raise(ERR_LIB_EC, EC_R_INCOMPATIBLE_OBJECTS);
117 if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) {
118 if (group->meth->field_type == NID_X9_62_prime_field)
119 return ossl_ec_GFp_simple_oct2point(group, point, buf, len, ctx);
121 #ifdef OPENSSL_NO_EC2M
123 ERR_raise(ERR_LIB_EC, EC_R_GF2M_NOT_SUPPORTED);
127 return ossl_ec_GF2m_simple_oct2point(group, point, buf, len, ctx);
130 return group->meth->oct2point(group, point, buf, len, ctx);
133 size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point,
134 point_conversion_form_t form,
135 unsigned char **pbuf, BN_CTX *ctx)
140 len = EC_POINT_point2oct(group, point, form, NULL, 0, NULL);
143 if ((buf = OPENSSL_malloc(len)) == NULL) {
144 ERR_raise(ERR_LIB_EC, ERR_R_MALLOC_FAILURE);
147 len = EC_POINT_point2oct(group, point, form, buf, len, ctx);