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80 lines
2.5 KiB
80 lines
2.5 KiB
5 months ago
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/* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "plugin/keyring/digest.h"
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#include <cstring>
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#include "my_dbug.h"
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namespace keyring {
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Digest::Digest(DigestKind digest_kind /*=SHA256*/) : is_empty(true) {
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set_digest_kind(digest_kind);
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}
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Digest::Digest(DigestKind digestKind, const char *value) : is_empty(true) {
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set_digest_kind(digestKind);
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assign(value);
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}
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void Digest::set_digest_kind(DigestKind digest_kind) {
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switch (digest_kind) {
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case SHA256:
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length = SHA256_DIGEST_LENGTH;
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value = new unsigned char[length];
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break;
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default:
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DBUG_ASSERT(0);
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}
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}
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Digest::~Digest() {
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memset(value, 0, length);
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delete[] value;
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}
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void Digest::assign(const char *value) {
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DBUG_ASSERT(value != NULL);
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memcpy(this->value, value, length);
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is_empty = false;
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}
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bool Digest::operator==(const Digest &digest) {
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return this->is_empty == digest.is_empty && this->length == digest.length &&
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memcmp(this->value, digest.value, this->length) == 0;
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}
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Digest &Digest::operator=(const Digest &digest) {
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this->length = digest.length;
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this->is_empty = digest.is_empty;
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if (digest.is_empty == false)
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memcpy(this->value, digest.value, digest.length);
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return *this;
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}
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void Digest::compute(uchar *memory, size_t memory_size) {
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// We are using SHA_EVP256 method from mysys library which symbols are
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// exported by mysqld.
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(void)::SHA_EVP256(memory, memory_size, value);
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is_empty = false;
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}
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} // namespace keyring
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