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26 lines
493 B
C++
26 lines
493 B
C++
/*
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* Copyright (c) 2020, 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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#include <AK/Span.h>
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#include <AK/Types.h>
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#include <LibCrypto/Checksum/Adler32.h>
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namespace Crypto::Checksum {
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void Adler32::update(ReadonlyBytes data)
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{
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for (size_t i = 0; i < data.size(); i++) {
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m_state_a = (m_state_a + data.at(i)) % 65521;
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m_state_b = (m_state_b + m_state_a) % 65521;
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}
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}
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u32 Adler32::digest()
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{
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return (m_state_b << 16) | m_state_a;
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}
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}
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