return ChecksumNone
	}
	return ChecksumInvalid
}

// NewChecksumType returns a checksum type based on the algorithm string and obj type.
func NewChecksumType(alg, objType string) ChecksumType {
	full := ChecksumFullObject
	switch objType {
	case xhttp.AmzChecksumTypeFullObject:
	case xhttp.AmzChecksumTypeComposite, "":
		full = 0
	default:
		return ChecksumInvalid
	}

	switch strings.ToUpper(alg) {

			return oi, InvalidArgument{
				Bucket: bucket,
				Object: fi.Name,
				Err:    fmt.Errorf("checksum type mismatch. got %q (%s) expected %q (%s)", checksumType.String(), checksumType.ObjType(), opts.WantChecksum.Type.String(), opts.WantChecksum.Type.ObjType()),
			}
		}
		checksumType |= hash.ChecksumMultipart | hash.ChecksumIncludesMultipart
	}

	var checksumCombined []byte