}

// IsSet returns whether the type is valid and known.
func (c ChecksumType) IsSet() bool {
	return !c.Is(ChecksumInvalid) && !c.Base().Is(ChecksumNone)
}

// ChecksumStringToType is like NewChecksumType but without the `mode`
func ChecksumStringToType(alg string) ChecksumType {
	switch strings.ToUpper(alg) {
	case "CRC32":
		return ChecksumCRC32
	case "CRC32C":
		return ChecksumCRC32C
	case "SHA1":

	meta := make(map[string]string)
	cs, isMP = oi.decryptChecksums(partNum, h)
	for k, v := range cs {
		if k == xhttp.AmzChecksumType {
			continue
		}
		cktype := hash.ChecksumStringToType(k)
		if cktype.IsSet() {
			meta[cktype.Key()] = v
			meta[xhttp.AmzChecksumAlgo] = cktype.String()
		}
	}
	return meta, isMP