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@ -14,10 +14,14 @@ func CheckCRC32A(data []byte) uint32 {
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return binary.BigEndian.Uint32(b)
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return binary.BigEndian.Uint32(b)
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}
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}
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// CheckCRC32AHex is a convenience function that outputs CRC32A (ITU I.363.5 algorithm, popularized by BZIP2) checksum as a hex string.
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func Crc32A(data []byte) []byte {
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return digest(data)
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}
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// Crc32AStr is a convenience function that outputs CRC32A (ITU I.363.5 algorithm, popularized by BZIP2) checksum as a hex string.
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// This function will produce the same results as following PHP code:
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// This function will produce the same results as following PHP code:
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// hash('crc32', $data)
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// hash('crc32', $data)
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func ChecksumHex(data []byte) string {
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func Crc32AStr(data []byte) string {
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b := digest(data)
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b := digest(data)
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return hex.EncodeToString(b)
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return hex.EncodeToString(b)
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@ -30,7 +34,7 @@ func digest(data []byte) []byte {
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crc = ^crc
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crc = ^crc
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for i := 0; i < len(data); i++ {
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for i := 0; i < len(data); i++ {
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crc = (crc << 8) ^ table[(crc >> 24) ^ (uint32(data[i]) & 0xff)]
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crc = (crc << 8) ^ table[(crc>>24)^(uint32(data[i])&0xff)]
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}
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}
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crc = ^crc
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crc = ^crc
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