// such an ETag (with a nonce value containing a '-')
	// as non-encrypted.

	return len(e) >= 32 // We consider all ETags longer than 32 bytes as encrypted
}

// IsMultipart reports whether the ETag belongs to an
// object that has been uploaded using the S3 multipart
// API.
// An S3 multipart ETag has a -<part-number> suffix.
func (e ETag) IsMultipart() bool {