libcruft-crypto/hash/md5.hpp

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2018-01-14 17:17:34 +11:00
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2013-2018 Danny Robson <danny@nerdcruft.net>
*/
#ifndef CRUFT_CRYPTO_HASH_MD5_HPP
#define CRUFT_CRYPTO_HASH_MD5_HPP
#include <cruft/util/view.hpp>
#include <array>
#include <cstdint>
#include <cstdlib>
///////////////////////////////////////////////////////////////////////////////
namespace cruft::crypto::hash {
class MD5 {
public:
using digest_t = std::array<uint8_t,16>;
static const size_t BLOCK_SIZE = 64;
static const size_t DIGEST_SIZE = 16;
public:
digest_t operator() (util::view<const uint8_t*>) const noexcept;
digest_t operator() (util::view<const uint8_t*>,util::view<const uint8_t*>) const noexcept;
digest_t operator() (util::view<const uint8_t*>,util::view<const uint8_t*>,util::view<const uint8_t*>) const noexcept;
private:
std::array<uint32_t,4>
transform (
const std::array<uint32_t,4> &ABCD,
const std::array<uint32_t,16> &X
) const noexcept;
};
}
#endif