2 * Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the OpenSSL license (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
13 #include <openssl/err.h>
14 #include <openssl/opensslv.h>
18 int EC_POINT_set_compressed_coordinates(const EC_GROUP
*group
, EC_POINT
*point
,
19 const BIGNUM
*x
, int y_bit
, BN_CTX
*ctx
)
21 if (group
->meth
->point_set_compressed_coordinates
== NULL
22 && !(group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
)) {
23 ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES
,
24 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
27 if (!ec_point_is_compat(point
, group
)) {
28 ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES
,
29 EC_R_INCOMPATIBLE_OBJECTS
);
32 if (group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
) {
33 if (group
->meth
->field_type
== NID_X9_62_prime_field
)
34 return ec_GFp_simple_set_compressed_coordinates(group
, point
, x
,
37 #ifdef OPENSSL_NO_EC2M
39 ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES
,
40 EC_R_GF2M_NOT_SUPPORTED
);
44 return ec_GF2m_simple_set_compressed_coordinates(group
, point
, x
,
48 return group
->meth
->point_set_compressed_coordinates(group
, point
, x
,
52 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP
*group
,
53 EC_POINT
*point
, const BIGNUM
*x
,
54 int y_bit
, BN_CTX
*ctx
)
56 return EC_POINT_set_compressed_coordinates(group
, point
, x
, y_bit
, ctx
);
59 #ifndef OPENSSL_NO_EC2M
60 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP
*group
,
61 EC_POINT
*point
, const BIGNUM
*x
,
62 int y_bit
, BN_CTX
*ctx
)
64 return EC_POINT_set_compressed_coordinates(group
, point
, x
, y_bit
, ctx
);
68 size_t EC_POINT_point2oct(const EC_GROUP
*group
, const EC_POINT
*point
,
69 point_conversion_form_t form
, unsigned char *buf
,
70 size_t len
, BN_CTX
*ctx
)
72 if (group
->meth
->point2oct
== 0
73 && !(group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
)) {
74 ECerr(EC_F_EC_POINT_POINT2OCT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
77 if (!ec_point_is_compat(point
, group
)) {
78 ECerr(EC_F_EC_POINT_POINT2OCT
, EC_R_INCOMPATIBLE_OBJECTS
);
81 if (group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
) {
82 if (group
->meth
->field_type
== NID_X9_62_prime_field
)
83 return ec_GFp_simple_point2oct(group
, point
, form
, buf
, len
, ctx
);
85 #ifdef OPENSSL_NO_EC2M
87 ECerr(EC_F_EC_POINT_POINT2OCT
, EC_R_GF2M_NOT_SUPPORTED
);
91 return ec_GF2m_simple_point2oct(group
, point
,
96 return group
->meth
->point2oct(group
, point
, form
, buf
, len
, ctx
);
99 int EC_POINT_oct2point(const EC_GROUP
*group
, EC_POINT
*point
,
100 const unsigned char *buf
, size_t len
, BN_CTX
*ctx
)
102 if (group
->meth
->oct2point
== 0
103 && !(group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
)) {
104 ECerr(EC_F_EC_POINT_OCT2POINT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
107 if (!ec_point_is_compat(point
, group
)) {
108 ECerr(EC_F_EC_POINT_OCT2POINT
, EC_R_INCOMPATIBLE_OBJECTS
);
111 if (group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
) {
112 if (group
->meth
->field_type
== NID_X9_62_prime_field
)
113 return ec_GFp_simple_oct2point(group
, point
, buf
, len
, ctx
);
115 #ifdef OPENSSL_NO_EC2M
117 ECerr(EC_F_EC_POINT_OCT2POINT
, EC_R_GF2M_NOT_SUPPORTED
);
121 return ec_GF2m_simple_oct2point(group
, point
, buf
, len
, ctx
);
124 return group
->meth
->oct2point(group
, point
, buf
, len
, ctx
);
127 size_t EC_POINT_point2buf(const EC_GROUP
*group
, const EC_POINT
*point
,
128 point_conversion_form_t form
,
129 unsigned char **pbuf
, BN_CTX
*ctx
)
134 len
= EC_POINT_point2oct(group
, point
, form
, NULL
, 0, NULL
);
137 if ((buf
= OPENSSL_malloc(len
)) == NULL
) {
138 ECerr(EC_F_EC_POINT_POINT2BUF
, ERR_R_MALLOC_FAILURE
);
141 len
= EC_POINT_point2oct(group
, point
, form
, buf
, len
, ctx
);