public static KeysetHandle parseEncryptedKeyset(
      KeysetReader reader, Aead aead, byte[] associatedData)
      throws GeneralSecurityException, IOException {
    return KeysetHandle.readWithAssociatedData(reader, aead, associatedData);
  }
Parse an encrypted keyset from the reader.
java_src/src/main/java/com/google/crypto/tink/LegacyKeysetSerialization.java