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/*
* Copyright (c) 2020, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/StringView.h>
#include <AK/Types.h>
namespace Crypto {
namespace Hash {
template<size_t BlockS, typename DigestT>
class HashFunction {
public:
static constexpr auto BlockSize = BlockS / 8;
static constexpr auto DigestSize = DigestT::Size;
using DigestType = DigestT;
constexpr static size_t block_size() { return BlockSize; };
constexpr static size_t digest_size() { return DigestSize; };
virtual void update(const u8*, size_t) = 0;
void update(const Bytes& buffer) { update(buffer.data(), buffer.size()); };
void update(const ReadonlyBytes& buffer) { update(buffer.data(), buffer.size()); };
void update(const ByteBuffer& buffer) { update(buffer.data(), buffer.size()); };
void update(StringView string) { update((const u8*)string.characters_without_null_termination(), string.length()); };
virtual DigestType peek() = 0;
virtual DigestType digest() = 0;
virtual void reset() = 0;
virtual String class_name() const = 0;
protected:
virtual ~HashFunction() = default;
};
}
}
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