// But both should decrypt to same plaintext
        char[] decrypted1 = storage.decryptCredentials(encrypted1);
        char[] decrypted2 = storage.decryptCredentials(encrypted2);

        assertArrayEquals(plaintext, decrypted1);
        assertArrayEquals(plaintext, decrypted2);

        // Clean up
        Arrays.fill(plaintext, '\0');

            if (plaintextBytes != null) {
                SecureKeyManager.secureWipe(plaintextBytes);
            }
        }
    }

    public char[] decryptCredentials(byte[] ciphertext) throws GeneralSecurityException {
        checkNotDestroyed();

        if (ciphertext == null || ciphertext.length <= GCM_IV_SIZE) {
            return null;
        }