@Override
  public Key[] getKeys(String[] aliases) {
    Key[] result = new Key[aliases.length];
    for (int i = 0; i < aliases.length; i++) {
      result[i] = new SecretKeySpec(Encryption.hash128(aliases[i]), "AES");
    }
    return result;
  }
Return a fixed secret key for AES for testing.
hbase-common/src/main/java/org/apache/hadoop/hbase/io/crypto/MockAesKeyProvider.java