| /* |
| * 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 tests.security; |
| |
| import java.security.AlgorithmParameters; |
| import java.security.InvalidAlgorithmParameterException; |
| import java.security.InvalidKeyException; |
| import java.security.KeyPair; |
| import java.security.KeyPairGenerator; |
| import java.security.NoSuchAlgorithmException; |
| import java.util.Arrays; |
| import javax.crypto.BadPaddingException; |
| import javax.crypto.Cipher; |
| import javax.crypto.IllegalBlockSizeException; |
| import javax.crypto.NoSuchPaddingException; |
| import junit.framework.Assert; |
| |
| public class AlgorithmParameterAsymmetricHelper extends TestHelper<AlgorithmParameters> { |
| |
| private static final String plainData = "some data to encrypt and decrypt"; |
| private final String algorithmName; |
| |
| public AlgorithmParameterAsymmetricHelper(String algorithmName) { |
| this.algorithmName = algorithmName; |
| } |
| |
| @Override |
| public void test(AlgorithmParameters parameters) { |
| |
| KeyPairGenerator generator = null; |
| try { |
| generator = KeyPairGenerator.getInstance(algorithmName); |
| } catch (NoSuchAlgorithmException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| generator.initialize(1024); |
| |
| KeyPair keyPair = generator.generateKeyPair(); |
| |
| |
| Cipher cipher = null; |
| try { |
| cipher = Cipher.getInstance(algorithmName); |
| } catch (NoSuchAlgorithmException e) { |
| Assert.fail(e.getMessage()); |
| } catch (NoSuchPaddingException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| cipher.init(Cipher.ENCRYPT_MODE, keyPair.getPublic(), parameters); |
| } catch (InvalidKeyException e) { |
| Assert.fail(e.getMessage()); |
| } catch (InvalidAlgorithmParameterException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| byte[] bs = null; |
| try { |
| bs = cipher.doFinal(plainData.getBytes()); |
| } catch (IllegalBlockSizeException e) { |
| Assert.fail(e.getMessage()); |
| } catch (BadPaddingException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| cipher.init(Cipher.DECRYPT_MODE, keyPair.getPrivate(), parameters); |
| } catch (InvalidKeyException e) { |
| Assert.fail(e.getMessage()); |
| } catch (InvalidAlgorithmParameterException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| byte[] decrypted = null; |
| try { |
| decrypted = cipher.doFinal(bs); |
| } catch (IllegalBlockSizeException e) { |
| Assert.fail(e.getMessage()); |
| } catch (BadPaddingException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| Assert.assertTrue(Arrays.equals(plainData.getBytes(), decrypted)); |
| } |
| } |