1 /* 2 * Copyright (c) 2003, 2018, 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 4856966 27 * @summary Test the Signature.update(ByteBuffer) method 28 * @author Andreas Sterbenz 29 * @library /test/lib .. 30 * @key randomness 31 * @modules jdk.crypto.cryptoki 32 * @run main/othervm ByteBuffers 33 * @run main/othervm ByteBuffers sm 34 */ 35 36 import java.nio.ByteBuffer; 37 import java.security.KeyPair; 38 import java.security.KeyPairGenerator; 39 import java.security.Provider; 40 import java.security.Signature; 41 import java.util.Random; 42 43 public class ByteBuffers extends PKCS11Test { 44 45 public static void main(String[] args) throws Exception { 46 main(new ByteBuffers(), args); 47 } 48 49 @Override 50 public void main(Provider p) throws Exception { 51 52 Random random = new Random(); 53 int n = 10 * 1024; 54 byte[] t = new byte[n]; 55 random.nextBytes(t); 56 57 KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p); 58 kpg.initialize(512); 59 KeyPair kp = kpg.generateKeyPair(); 60 61 Signature sig = Signature.getInstance("MD5withRSA", p); 62 sig.initSign(kp.getPrivate()); 63 sig.update(t); 64 byte[] signature = sig.sign(); 65 66 sig.initVerify(kp.getPublic()); 67 68 // test 1: ByteBuffer with an accessible backing array 69 ByteBuffer b1 = ByteBuffer.allocate(n + 256); 70 b1.position(random.nextInt(256)); 71 b1.limit(b1.position() + n); 72 ByteBuffer b2 = b1.slice(); 73 b2.put(t); 74 b2.clear(); 75 verify(sig, signature, b2, random); 76 77 // test 2: direct ByteBuffer 78 ByteBuffer b3 = ByteBuffer.allocateDirect(t.length); 79 b3.put(t); 80 b3.clear(); 81 verify(sig, signature, b3, random); 82 83 // test 3: ByteBuffer without an accessible backing array 84 b2.clear(); 85 ByteBuffer b4 = b2.asReadOnlyBuffer(); 86 verify(sig, signature, b4, random); 87 88 System.out.println("All tests passed"); 89 } 90 91 private static void verify(Signature sig, byte[] signature, ByteBuffer b, Random random) throws Exception { 92 int lim = b.limit(); 93 b.limit(random.nextInt(lim)); 94 sig.update(b); 95 if (b.hasRemaining()) { 96 throw new Exception("Buffer not consumed"); 97 } 98 b.limit(lim); 99 sig.update(b); 100 if (b.hasRemaining()) { 101 throw new Exception("Buffer not consumed"); 102 } 103 if (sig.verify(signature) == false) { 104 throw new Exception("Signature did not verify"); 105 } 106 } 107 }