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serenity/Userland/Libraries/LibCrypto/Checksum/CRC32.cpp
Brian Gianforcaro 1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00

25 lines
432 B
C++

/*
* Copyright (c) 2020, the SerenityOS developers
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Span.h>
#include <AK/Types.h>
#include <LibCrypto/Checksum/CRC32.h>
namespace Crypto::Checksum {
void CRC32::update(ReadonlyBytes data)
{
for (size_t i = 0; i < data.size(); i++) {
m_state = table[(m_state ^ data.at(i)) & 0xFF] ^ (m_state >> 8);
}
};
u32 CRC32::digest()
{
return ~m_state;
}
}