return xhttp.AmzChecksumCRC32C
	case c.Is(ChecksumSHA1):
		return xhttp.AmzChecksumSHA1
	case c.Is(ChecksumSHA256):
		return xhttp.AmzChecksumSHA256
	}
	return ""
}

// RawByteLen returns the size of the un-encoded checksum.
func (c ChecksumType) RawByteLen() int {
	switch {
	case c.Is(ChecksumCRC32):
		return 4
	case c.Is(ChecksumCRC32C):
		return 4
	case c.Is(ChecksumSHA1):
		return sha1.Size