| /* |
| * Copyright 2002-2020 The OpenSSL Project Authors. 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 |
| */ |
| |
| /* |
| * Suppress deprecation warnings for EC low level implementations that are |
| * kept until removal. |
| */ |
| #define OPENSSL_SUPPRESS_DEPRECATED |
| |
| #include <openssl/crypto.h> |
| #include <openssl/err.h> |
| #include <openssl/ec.h> |
| |
| #ifndef OPENSSL_NO_DEPRECATED_3_0 |
| BIGNUM *EC_POINT_point2bn(const EC_GROUP *group, |
| const EC_POINT *point, |
| point_conversion_form_t form, |
| BIGNUM *ret, BN_CTX *ctx) |
| { |
| size_t buf_len = 0; |
| unsigned char *buf; |
| |
| buf_len = EC_POINT_point2buf(group, point, form, &buf, ctx); |
| |
| if (buf_len == 0) |
| return NULL; |
| |
| ret = BN_bin2bn(buf, buf_len, ret); |
| |
| OPENSSL_free(buf); |
| |
| return ret; |
| } |
| |
| EC_POINT *EC_POINT_bn2point(const EC_GROUP *group, |
| const BIGNUM *bn, EC_POINT *point, BN_CTX *ctx) |
| { |
| size_t buf_len = 0; |
| unsigned char *buf; |
| EC_POINT *ret; |
| |
| if ((buf_len = BN_num_bytes(bn)) == 0) |
| buf_len = 1; |
| if ((buf = OPENSSL_malloc(buf_len)) == NULL) { |
| ECerr(EC_F_EC_POINT_BN2POINT, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| |
| if (BN_bn2binpad(bn, buf, buf_len) < 0) { |
| OPENSSL_free(buf); |
| return NULL; |
| } |
| |
| if (point == NULL) { |
| if ((ret = EC_POINT_new(group)) == NULL) { |
| OPENSSL_free(buf); |
| return NULL; |
| } |
| } else |
| ret = point; |
| |
| if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) { |
| if (ret != point) |
| EC_POINT_clear_free(ret); |
| OPENSSL_free(buf); |
| return NULL; |
| } |
| |
| OPENSSL_free(buf); |
| return ret; |
| } |
| #endif /* OPENSSL_NO_DEPRECATED_3_0 */ |