/**
* Converts the given AES/HMAC keys into a base64 encoded string suitable for storage. Sister
* function of keys.
*
* @param keys The combined aes and hmac keys
* @return a base 64 encoded AES string & hmac key as base64(aesKey) : base64(hmacKey)
*/
public static String keyString(SecretKeys keys) {
return keys.toString();
}
