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 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
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
,
53 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP
*group
,
54 EC_POINT
*point
, const BIGNUM
*x
,
55 int y_bit
, BN_CTX
*ctx
)
57 return EC_POINT_set_compressed_coordinates(group
, point
, x
, y_bit
, ctx
);
60 # ifndef OPENSSL_NO_EC2M
61 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP
*group
,
62 EC_POINT
*point
, const BIGNUM
*x
,
63 int y_bit
, BN_CTX
*ctx
)
65 return EC_POINT_set_compressed_coordinates(group
, point
, x
, y_bit
, ctx
);
70 size_t EC_POINT_point2oct(const EC_GROUP
*group
, const EC_POINT
*point
,
71 point_conversion_form_t form
, unsigned char *buf
,
72 size_t len
, BN_CTX
*ctx
)
74 if (group
->meth
->point2oct
== 0
75 && !(group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
)) {
76 ECerr(EC_F_EC_POINT_POINT2OCT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
79 if (!ec_point_is_compat(point
, group
)) {
80 ECerr(EC_F_EC_POINT_POINT2OCT
, EC_R_INCOMPATIBLE_OBJECTS
);
83 if (group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
) {
84 if (group
->meth
->field_type
== NID_X9_62_prime_field
)
85 return ec_GFp_simple_point2oct(group
, point
, form
, buf
, len
, ctx
);
87 #ifdef OPENSSL_NO_EC2M
89 ECerr(EC_F_EC_POINT_POINT2OCT
, EC_R_GF2M_NOT_SUPPORTED
);
93 return ec_GF2m_simple_point2oct(group
, point
,
98 return group
->meth
->point2oct(group
, point
, form
, buf
, len
, ctx
);
101 int EC_POINT_oct2point(const EC_GROUP
*group
, EC_POINT
*point
,
102 const unsigned char *buf
, size_t len
, BN_CTX
*ctx
)
104 if (group
->meth
->oct2point
== 0
105 && !(group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
)) {
106 ECerr(EC_F_EC_POINT_OCT2POINT
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
109 if (!ec_point_is_compat(point
, group
)) {
110 ECerr(EC_F_EC_POINT_OCT2POINT
, EC_R_INCOMPATIBLE_OBJECTS
);
113 if (group
->meth
->flags
& EC_FLAGS_DEFAULT_OCT
) {
114 if (group
->meth
->field_type
== NID_X9_62_prime_field
)
115 return ec_GFp_simple_oct2point(group
, point
, buf
, len
, ctx
);
117 #ifdef OPENSSL_NO_EC2M
119 ECerr(EC_F_EC_POINT_OCT2POINT
, EC_R_GF2M_NOT_SUPPORTED
);
123 return ec_GF2m_simple_oct2point(group
, point
, buf
, len
, ctx
);
126 return group
->meth
->oct2point(group
, point
, buf
, len
, ctx
);
129 size_t EC_POINT_point2buf(const EC_GROUP
*group
, const EC_POINT
*point
,
130 point_conversion_form_t form
,
131 unsigned char **pbuf
, BN_CTX
*ctx
)
136 len
= EC_POINT_point2oct(group
, point
, form
, NULL
, 0, NULL
);
139 if ((buf
= OPENSSL_malloc(len
)) == NULL
) {
140 ECerr(EC_F_EC_POINT_POINT2BUF
, ERR_R_MALLOC_FAILURE
);
143 len
= EC_POINT_point2oct(group
, point
, form
, buf
, len
, ctx
);