1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 8072452 27 * @summary Support DHE sizes up to 8192-bits 28 */ 29 30 import java.math.BigInteger; 31 32 import java.security.*; 33 import javax.crypto.*; 34 import javax.crypto.interfaces.*; 35 import javax.crypto.spec.*; 36 37 public class UnsupportedDHKeys { 38 39 /* 40 * Sizes and values for various lengths. 41 */ 42 private enum UnsupportedKeySize { 43 // not multiple of 64 44 dhp513(513), dhp769(769), dhp895(895), 45 dhp1023(1023), dhp1535(1535), dhp2047(2047), 46 47 // unsupported 48 dhp2176(2176), dhp3008(3008), dhp4032(4032), 49 dhp5120(5120), dhp6400(6400), dhp7680(7680), 50 dhp8192(8191), dhp8128(8128), dhp8260(8260); 51 52 final int primeSize; 53 54 UnsupportedKeySize(int primeSize) { 55 this.primeSize = primeSize; 56 } 57 } 58 59 public static void main(String[] args) throws Exception { 60 for (UnsupportedKeySize keySize : UnsupportedKeySize.values()) { 61 try { 62 System.out.println("Checking " + keySize.primeSize + " ..."); 63 KeyPairGenerator kpg = 64 KeyPairGenerator.getInstance("DH", "SunJCE"); 65 kpg.initialize(keySize.primeSize); 66 KeyPair kp = kpg.generateKeyPair(); 67 68 throw new Exception("Should not support " + keySize.primeSize); 69 } catch (InvalidParameterException ipe) { 70 System.out.println("\tOk, unsupported"); 71 System.out.println(ipe); 72 // ipe.printStackTrace(System.out); 73 } 74 } 75 } 76 }