30 lines
953 B
C++
30 lines
953 B
C++
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/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "net/dcsctp/packet/crc32c.h"
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#include <cstdint>
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#include "third_party/crc32c/src/include/crc32c/crc32c.h"
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namespace dcsctp {
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uint32_t GenerateCrc32C(rtc::ArrayView<const uint8_t> data) {
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uint32_t crc32c = crc32c_value(data.data(), data.size());
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// Byte swapping for little endian byte order:
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uint8_t byte0 = crc32c;
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uint8_t byte1 = crc32c >> 8;
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uint8_t byte2 = crc32c >> 16;
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uint8_t byte3 = crc32c >> 24;
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crc32c = ((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3);
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return crc32c;
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}
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} // namespace dcsctp
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