ChecksumIEEE — the common polynomial
sum := crc32.ChecksumIEEE([]byte("hello"))
fmt.Printf("%08x\n", sum)hash/crc32
CRC-32 checksums. Fast, 32-bit, great for integrity checks — not a secure hash.
Compute a CRC-32
Streaming via Hash32
h := crc32.NewIEEE()
io.Copy(h, f)
fmt.Printf("%08x\n", h.Sum32())Other polynomials
Castagnoli (used by iSCSI and ext4) is faster on modern CPUs thanks to hardware support.
t := crc32.MakeTable(crc32.Castagnoli)
sum := crc32.Checksum(data, t)