| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8178374 |
| * @summary Test GCM decryption with various types of input/output |
| * ByteBuffer objects |
| * @key randomness |
| */ |
| |
| import java.nio.ByteBuffer; |
| import java.security.*; |
| import java.util.Random; |
| |
| import javax.crypto.Cipher; |
| import javax.crypto.SecretKey; |
| import javax.crypto.AEADBadTagException; |
| import javax.crypto.spec.*; |
| |
| public class TestGCMWithByteBuffer { |
| |
| private static Random random = new SecureRandom(); |
| private static int dataSize = 4096; // see javax.crypto.CipherSpi |
| private static int multiples = 3; |
| |
| public static void main(String args[]) throws Exception { |
| Provider[] provs = Security.getProviders(); |
| for (Provider p : provs) { |
| try { |
| Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding", p); |
| test(cipher); |
| } catch (NoSuchAlgorithmException nsae) { |
| // skip testing due to no support |
| continue; |
| } |
| } |
| } |
| |
| private static void test(Cipher cipher) throws Exception { |
| System.out.println("Testing " + cipher.getProvider()); |
| |
| boolean failedOnce = false; |
| Exception failedReason = null; |
| |
| int tagLen = 96; // in bits |
| byte[] keyBytes = new byte[16]; |
| random.nextBytes(keyBytes); |
| byte[] dataChunk = new byte[dataSize]; |
| random.nextBytes(dataChunk); |
| |
| SecretKey key = new SecretKeySpec(keyBytes, "AES"); |
| // re-use key bytes as IV as the real test is buffer calculation |
| GCMParameterSpec s = new GCMParameterSpec(tagLen, keyBytes); |
| |
| /* |
| * Iterate through various sizes to make sure that the code works with |
| * internal temp buffer size 4096. |
| */ |
| for (int t = 1; t <= multiples; t++) { |
| int size = t * dataSize; |
| |
| System.out.println("\nTesting data size: " + size); |
| |
| try { |
| decrypt(cipher, key, s, dataChunk, t, |
| ByteBuffer.allocate(dataSize), |
| ByteBuffer.allocate(size), |
| ByteBuffer.allocateDirect(dataSize), |
| ByteBuffer.allocateDirect(size)); |
| } catch (Exception e) { |
| System.out.println("\tFailed with data size " + size); |
| failedOnce = true; |
| failedReason = e; |
| } |
| } |
| if (failedOnce) { |
| throw failedReason; |
| } |
| System.out.println("\n=> Passed..."); |
| } |
| |
| private enum TestVariant { |
| HEAP_HEAP, HEAP_DIRECT, DIRECT_HEAP, DIRECT_DIRECT |
| }; |
| |
| private static void decrypt(Cipher cipher, SecretKey key, |
| GCMParameterSpec s, byte[] dataChunk, int multiples, |
| ByteBuffer heapIn, ByteBuffer heapOut, ByteBuffer directIn, |
| ByteBuffer directOut) throws Exception { |
| |
| ByteBuffer inBB = null; |
| ByteBuffer outBB = null; |
| |
| // try various combinations of input/output |
| for (TestVariant tv : TestVariant.values()) { |
| System.out.println(" " + tv); |
| |
| switch (tv) { |
| case HEAP_HEAP: |
| inBB = heapIn; |
| outBB = heapOut; |
| break; |
| case HEAP_DIRECT: |
| inBB = heapIn; |
| outBB = directOut; |
| break; |
| case DIRECT_HEAP: |
| inBB = directIn; |
| outBB = heapOut; |
| break; |
| case DIRECT_DIRECT: |
| inBB = directIn; |
| outBB = directOut; |
| break; |
| } |
| |
| // prepare input and output buffers |
| inBB.clear(); |
| inBB.put(dataChunk); |
| |
| outBB.clear(); |
| |
| try { |
| // Always re-init the Cipher object so cipher is in |
| // a good state for future testing |
| cipher.init(Cipher.DECRYPT_MODE, key, s); |
| |
| for (int i = 0; i < multiples; i++) { |
| inBB.flip(); |
| cipher.update(inBB, outBB); |
| if (inBB.hasRemaining()) { |
| throw new Exception("buffer not empty"); |
| } |
| } |
| // finish decryption and process all data buffered |
| cipher.doFinal(inBB, outBB); |
| throw new RuntimeException("Error: doFinal completed without exception"); |
| } catch (AEADBadTagException ex) { |
| System.out.println("Expected AEADBadTagException thrown"); |
| continue; |
| } |
| } |
| } |
| } |