1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package tests.security.interfaces; 17 18 import junit.framework.TestCase; 19 20 import java.security.KeyPair; 21 import java.security.KeyPairGenerator; 22 import java.security.SecureRandom; 23 import java.security.interfaces.DSAPrivateKey; 24 import java.security.interfaces.DSAPublicKey; 25 import java.security.spec.DSAParameterSpec; 26 27 public class DSAPublicKeyTest extends TestCase { 28 29 /** 30 * java.security.interfaces.DSAPublicKey 31 * #getY() 32 * test covers following use cases 33 * Case 1: check with predefined p, q, g, x 34 * Case 2: check with random p, q, g, x. It takes some time (up to 35 * minute) 36 */ test_getY()37 public void test_getY() throws Exception { 38 KeyPairGenerator keyGen = null; 39 KeyPair keys = null; 40 DSAPrivateKey priv = null; 41 DSAPublicKey publ = null; 42 43 // Case 1: check with predefined p, q, g, x 44 keyGen = KeyPairGenerator.getInstance("DSA"); 45 keyGen.initialize(new DSAParameterSpec(Util.P, Util.Q, Util.G), new SecureRandom()); 46 keys = keyGen.generateKeyPair(); 47 priv = (DSAPrivateKey) keys.getPrivate(); 48 publ = (DSAPublicKey) keys.getPublic(); 49 assertNotNull("Invalid Y value", publ.getY()); 50 51 // Case 2: check with random p, q, g, x. It takes some time (up to 52 // minute) 53 keyGen = KeyPairGenerator.getInstance("DSA"); 54 keys = keyGen.generateKeyPair(); 55 priv = (DSAPrivateKey) keys.getPrivate(); 56 publ = (DSAPublicKey) keys.getPublic(); 57 assertNotNull("Invalid Y value", publ.getY()); 58 } 59 } 60