| /* |
| * 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.InvalidKeyException; |
| import java.security.KeyPair; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| import java.security.Signature; |
| import java.security.SignatureException; |
| import junit.framework.Assert; |
| |
| public class SignatureHelper extends TestHelper<KeyPair> { |
| |
| private final String algorithmName; |
| private final String plainData = "some data do sign and verify"; |
| |
| public SignatureHelper(String algorithmName) { |
| this.algorithmName = algorithmName; |
| } |
| |
| @Override |
| public void test(KeyPair keyPair) { |
| test(keyPair.getPrivate(), keyPair.getPublic()); |
| } |
| |
| public void test(PrivateKey encryptKey, PublicKey decryptKey) { |
| |
| Signature signature = null; |
| try { |
| signature = Signature.getInstance(algorithmName); |
| } catch (NoSuchAlgorithmException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| signature.initSign(encryptKey); |
| } catch (InvalidKeyException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| signature.update(plainData.getBytes()); |
| } catch (SignatureException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| byte[] signed = null; |
| try { |
| signed = signature.sign(); |
| } catch (SignatureException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| signature.initVerify(decryptKey); |
| } catch (InvalidKeyException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| signature.update(plainData.getBytes()); |
| } catch (SignatureException e) { |
| Assert.fail(e.getMessage()); |
| } |
| |
| try { |
| Assert.assertTrue("signature could not be verified", signature |
| .verify(signed)); |
| } catch (SignatureException e) { |
| Assert.fail(e.getMessage()); |
| } |
| } |
| } |