| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.nifi.repository.encryption.metadata.serialization; |
| |
| import org.apache.nifi.repository.encryption.configuration.EncryptionProtocol; |
| import org.apache.nifi.repository.encryption.configuration.RepositoryEncryptionMethod; |
| import org.apache.nifi.repository.encryption.metadata.RecordMetadataSerializer; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectOutputStream; |
| import java.io.UncheckedIOException; |
| import java.util.Objects; |
| |
| /** |
| * Standard implementation of Record Metadata Serializer using ObjectOutputStream |
| */ |
| public class StandardRecordMetadataSerializer implements RecordMetadataSerializer { |
| private final EncryptionProtocol encryptionProtocol; |
| |
| public StandardRecordMetadataSerializer(final EncryptionProtocol encryptionProtocol) { |
| this.encryptionProtocol = Objects.requireNonNull(encryptionProtocol, "Encryption Protocol required"); |
| } |
| |
| /** |
| * Write Metadata to byte array |
| * |
| * @param keyId Key Identifier used for encryption |
| * @param initializationVector Initialization Vector |
| * @param length Length of encrypted binary |
| * @param repositoryEncryptionMethod Repository Encryption Method |
| * @return Serialized byte array |
| */ |
| @Override |
| public byte[] writeMetadata(final String keyId, final byte[] initializationVector, final int length, final RepositoryEncryptionMethod repositoryEncryptionMethod) { |
| Objects.requireNonNull(keyId, "Key Identifier required"); |
| Objects.requireNonNull(repositoryEncryptionMethod, "Repository Encryption Method required"); |
| |
| final ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| try (final ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream)) { |
| final StandardRecordMetadata recordMetadata = new StandardRecordMetadata(); |
| recordMetadata.keyId = keyId; |
| recordMetadata.ivBytes = initializationVector; |
| recordMetadata.cipherByteLength = length; |
| recordMetadata.algorithm = repositoryEncryptionMethod.getAlgorithm(); |
| recordMetadata.version = encryptionProtocol.getVersion(); |
| objectOutputStream.writeObject(recordMetadata); |
| } catch (final IOException e) { |
| throw new UncheckedIOException(String.format("Write Metadata Key ID [%s] Failed", keyId), e); |
| } |
| return outputStream.toByteArray(); |
| } |
| } |