| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed 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.conscrypt.java.security; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| import java.security.AlgorithmParameters; |
| import java.security.Key; |
| import java.util.Arrays; |
| import javax.crypto.Cipher; |
| import javax.crypto.KeyGenerator; |
| |
| public class AlgorithmParameterSymmetricHelper extends TestHelper<AlgorithmParameters> { |
| |
| private static final String plainData = "some data to encrypt and decrypt"; |
| private final String algorithmName; |
| private final int keySize; |
| private String blockmode; |
| |
| public AlgorithmParameterSymmetricHelper(String algorithmName, int keySize) { |
| this.algorithmName = algorithmName; |
| this.keySize = keySize; |
| } |
| |
| public AlgorithmParameterSymmetricHelper(String algorithmName, String blockmode, int keySize) { |
| this(algorithmName, keySize); |
| this.blockmode = blockmode; |
| } |
| |
| @Override |
| public void test(AlgorithmParameters parameters) throws Exception { |
| KeyGenerator generator = KeyGenerator.getInstance(algorithmName); |
| generator.init(keySize); |
| |
| Key key = generator.generateKey(); |
| String transformation = algorithmName; |
| if (blockmode != null) |
| { |
| transformation += "/" + blockmode; |
| } |
| |
| Cipher cipher = Cipher.getInstance(transformation); |
| cipher.init(Cipher.ENCRYPT_MODE, key, parameters); |
| byte[] bs = cipher.doFinal(plainData.getBytes("UTF-8")); |
| |
| cipher.init(Cipher.DECRYPT_MODE, key, parameters); |
| byte[] decrypted = cipher.doFinal(bs); |
| |
| assertTrue(Arrays.equals(plainData.getBytes("UTF-8"), decrypted)); |
| } |
| } |