77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* Suppress deprecation warnings for EC low level implementations that are
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* kept until removal.
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*/
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#define OPENSSL_SUPPRESS_DEPRECATED
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#include <openssl/crypto.h>
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#include <openssl/err.h>
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#include <openssl/ec.h>
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#ifndef OPENSSL_NO_DEPRECATED_3_0
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BIGNUM *EC_POINT_point2bn(const EC_GROUP *group,
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const EC_POINT *point,
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point_conversion_form_t form,
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BIGNUM *ret, BN_CTX *ctx)
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{
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size_t buf_len = 0;
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unsigned char *buf;
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buf_len = EC_POINT_point2buf(group, point, form, &buf, ctx);
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if (buf_len == 0)
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return NULL;
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ret = BN_bin2bn(buf, buf_len, ret);
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OPENSSL_free(buf);
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return ret;
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}
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EC_POINT *EC_POINT_bn2point(const EC_GROUP *group,
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const BIGNUM *bn, EC_POINT *point, BN_CTX *ctx)
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{
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size_t buf_len = 0;
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unsigned char *buf;
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EC_POINT *ret;
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if ((buf_len = BN_num_bytes(bn)) == 0)
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buf_len = 1;
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if ((buf = OPENSSL_malloc(buf_len)) == NULL)
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return NULL;
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if (BN_bn2binpad(bn, buf, buf_len) < 0) {
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OPENSSL_free(buf);
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return NULL;
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}
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if (point == NULL) {
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if ((ret = EC_POINT_new(group)) == NULL) {
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OPENSSL_free(buf);
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return NULL;
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}
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} else
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ret = point;
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if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) {
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if (ret != point)
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EC_POINT_clear_free(ret);
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OPENSSL_free(buf);
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return NULL;
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}
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OPENSSL_free(buf);
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return ret;
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}
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#endif /* OPENSSL_NO_DEPRECATED_3_0 */
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