| /* |
| * 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.directory.server.kerberos.shared.crypto.encryption; |
| |
| |
| import org.apache.directory.server.kerberos.shared.exceptions.KerberosException; |
| import org.apache.directory.server.kerberos.shared.messages.value.EncryptedData; |
| import org.apache.directory.server.kerberos.shared.messages.value.EncryptionKey; |
| |
| |
| /** |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| class NullEncryption extends EncryptionEngine |
| { |
| public EncryptionType getEncryptionType() |
| { |
| return EncryptionType.NULL; |
| } |
| |
| |
| public int getChecksumLength() |
| { |
| return 0; |
| } |
| |
| |
| public int getConfounderLength() |
| { |
| return 0; |
| } |
| |
| |
| public byte[] getDecryptedData( EncryptionKey key, EncryptedData data, KeyUsage usage ) throws KerberosException |
| { |
| return data.getCipher(); |
| } |
| |
| |
| public EncryptedData getEncryptedData( EncryptionKey key, byte[] plainText, KeyUsage usage ) |
| { |
| return new EncryptedData( getEncryptionType(), key.getKeyVersion(), plainText ); |
| } |
| |
| |
| public byte[] encrypt( byte[] plainText, byte[] keyBytes ) |
| { |
| return plainText; |
| } |
| |
| |
| public byte[] decrypt( byte[] cipherText, byte[] keyBytes ) |
| { |
| return cipherText; |
| } |
| |
| |
| public byte[] calculateIntegrity( byte[] plainText, byte[] key, KeyUsage usage ) |
| { |
| return null; |
| } |
| } |