2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 * @author Boris V. Kuznetsov
25 import java.security.InvalidKeyException;
26 import java.security.Key;
27 import java.security.SecureRandom;
28 import org.apache.harmony.crypto.internal.NullCipherSpi;
32 * This class provides an identity cipher that does not transform the input data
33 * in any way. The <i>encrypted</i> data is identical to the <i>plain text</i>.
35 public class NullCipher extends Cipher {
38 * Creates a new {@code NullCipher} instance.
41 super(new NullCipherSpi(), null, null);
43 this.init(Cipher.ENCRYPT_MODE, (Key)null, (SecureRandom)null);
44 } catch (InvalidKeyException e) {