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https://github.com/RGBCube/serenity
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6bd880c404
CRC32 table is generated at compile-time and put into a static variable in the header file. This can be moved to be a function instead of a class, be moved to the `.cpp` file` and generated as an array instead of a class which only implements `operator[]`.
36 lines
625 B
C++
36 lines
625 B
C++
/*
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* Copyright (c) 2020-2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Span.h>
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#include <AK/Types.h>
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#include <LibCrypto/Checksum/ChecksumFunction.h>
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namespace Crypto::Checksum {
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class CRC32 : public ChecksumFunction<u32> {
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public:
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CRC32() { }
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CRC32(ReadonlyBytes data)
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{
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update(data);
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}
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CRC32(u32 initial_state, ReadonlyBytes data)
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: m_state(initial_state)
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{
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update(data);
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}
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virtual void update(ReadonlyBytes data) override;
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virtual u32 digest() override;
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private:
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u32 m_state { ~0u };
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};
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}
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