| /* |
| * Copyright (c) 2013, 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 8026943 |
| * @summary Verify that same buffer can be used as input and output when |
| * using Cipher objects. |
| * @author Valerie Peng |
| */ |
| import java.security.*; |
| import java.security.spec.*; |
| |
| import java.util.Arrays; |
| |
| import javax.crypto.*; |
| import javax.crypto.spec.*; |
| |
| public class TestCopySafe { |
| |
| private static boolean DEBUG = false; |
| private static int INPUT_LENGTH = 160; // must be multiple of block size |
| private static byte[] PT = new byte[INPUT_LENGTH]; |
| private static SecretKey KEY = new SecretKeySpec(new byte[16], "AES"); |
| private static byte[] IV = new byte[16]; |
| |
| private static int[] OFFSETS = { 1, 8, 17 }; |
| |
| private static final String[] MODES = { |
| "ECB", "CBC", "PCBC", "CTR", "CTS", |
| "CFB", "CFB8", "CFB16", "CFB24", "CFB32", "CFB40", |
| "CFB48", "CFB56", "CFB64", |
| "OFB", "OFB8", "OFB16", "OFB24", "OFB32", "OFB40", |
| "OFB48", "OFB56", "OFB64", |
| "GCM" |
| }; |
| |
| public static void main(String[] argv) throws Exception { |
| |
| Provider p = Security.getProvider("SunJCE"); |
| |
| AlgorithmParameterSpec params = null; |
| boolean result = true; |
| for (String mode : MODES) { |
| String transformation = "AES/" + mode + "/NoPadding"; |
| boolean isGCM = (mode == "GCM"); |
| if (isGCM) { |
| params = new GCMParameterSpec(128, IV); |
| } else if (mode != "ECB") { |
| params = new IvParameterSpec(IV); |
| } |
| Cipher c = Cipher.getInstance(transformation, p); |
| System.out.println("Testing " + transformation + ":"); |
| for (int offset : OFFSETS) { |
| System.out.print("=> offset " + offset + ": "); |
| try { |
| test(c, params, offset, isGCM); |
| System.out.println("Passed"); |
| } catch(Exception ex) { |
| ex.printStackTrace(); |
| result = false; |
| continue; |
| } |
| } |
| } |
| if (!result) { |
| throw new Exception("One or more test failed"); |
| } |
| } |
| |
| private static void test(Cipher c, AlgorithmParameterSpec params, |
| int offset, boolean isGCM) throws Exception { |
| |
| // Test encryption first |
| if (isGCM) { |
| // re-init with only key value first to bypass the |
| // Key+IV-uniqueness check for GCM encryption |
| c.init(Cipher.ENCRYPT_MODE, KEY); |
| } |
| c.init(Cipher.ENCRYPT_MODE, KEY, params); |
| byte[] answer = c.doFinal(PT); |
| byte[] pt2 = Arrays.copyOf(PT, answer.length + offset); |
| |
| // #1: outOfs = inOfs = 0 |
| if (isGCM) { |
| c.init(Cipher.ENCRYPT_MODE, KEY); |
| c.init(Cipher.ENCRYPT_MODE, KEY, params); |
| } |
| c.doFinal(pt2, 0, PT.length, pt2, 0); |
| if (!isTwoArraysEqual(pt2, 0, answer, 0, answer.length)) { |
| throw new Exception("Enc#1 diff check failed!"); |
| } else if (DEBUG) { |
| System.out.println("Enc#1 diff check passed"); |
| } |
| |
| // #2: inOfs = 0, outOfs = offset |
| System.arraycopy(PT, 0, pt2, 0, PT.length); |
| if (isGCM) { |
| c.init(Cipher.ENCRYPT_MODE, KEY); |
| c.init(Cipher.ENCRYPT_MODE, KEY, params); |
| } |
| c.doFinal(pt2, 0, PT.length, pt2, offset); |
| if (!isTwoArraysEqual(pt2, offset, answer, 0, answer.length)) { |
| throw new Exception("Enc#2 diff check failed"); |
| } else if (DEBUG) { |
| System.out.println("Enc#2 diff check passed"); |
| } |
| |
| // #3: inOfs = offset, outOfs = 0 |
| System.arraycopy(PT, 0, pt2, offset, PT.length); |
| if (isGCM) { |
| c.init(Cipher.ENCRYPT_MODE, KEY); |
| c.init(Cipher.ENCRYPT_MODE, KEY, params); |
| } |
| c.doFinal(pt2, offset, PT.length, pt2, 0); |
| if (!isTwoArraysEqual(pt2, 0, answer, 0, answer.length)) { |
| throw new Exception("Enc#3 diff check failed"); |
| } else if (DEBUG) { |
| System.out.println("Enc#3 diff check passed"); |
| } |
| |
| // Test decryption now, we should get back PT as a result |
| c.init(Cipher.DECRYPT_MODE, KEY, params); |
| pt2 = Arrays.copyOf(answer, answer.length + offset); |
| |
| // #1: outOfs = inOfs = 0 |
| c.doFinal(pt2, 0, answer.length, pt2, 0); |
| if (!isTwoArraysEqual(pt2, 0, PT, 0, PT.length)) { |
| throw new Exception("Dec#1 diff check failed!"); |
| } else if (DEBUG) { |
| System.out.println("Dec#1 diff check passed"); |
| } |
| |
| // #2: inOfs = 0, outOfs = offset |
| System.arraycopy(answer, 0, pt2, 0, answer.length); |
| c.doFinal(pt2, 0, answer.length, pt2, offset); |
| if (!isTwoArraysEqual(pt2, offset, PT, 0, PT.length)) { |
| throw new Exception("Dec#2 diff check failed"); |
| } else if (DEBUG) { |
| System.out.println("Dec#2 diff check passed"); |
| } |
| |
| // #3: inOfs = offset, outOfs = 0 |
| System.arraycopy(answer, 0, pt2, offset, answer.length); |
| c.doFinal(pt2, offset, answer.length, pt2, 0); |
| if (!isTwoArraysEqual(pt2, 0, PT, 0, PT.length)) { |
| throw new Exception("Dec#3 diff check failed"); |
| } else if (DEBUG) { |
| System.out.println("Dec#3 diff check passed"); |
| } |
| } |
| |
| private static boolean isTwoArraysEqual(byte[] a, int aOff, byte[] b, int bOff, |
| int len) { |
| for (int i = 0; i < len; i++) { |
| if (a[aOff + i] != b[bOff + i]) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |
| |