| /* |
| * Copyright (c) 2005, 2007, 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 5083253 |
| * @run main CTSMode |
| * @summary Verify that CTR mode works as expected |
| * @author Valerie Peng |
| */ |
| |
| import java.util.*; |
| import java.security.AlgorithmParameters; |
| import javax.crypto.*; |
| import javax.crypto.spec.*; |
| |
| public class CTSMode { |
| |
| private final static byte[] toByteArray(String s) { |
| char[] c = s.toCharArray(); |
| byte[] t = new byte[c.length / 2]; |
| int n = 0; |
| int d1 = -1; |
| int d2 = -1; |
| for (int i = 0; i < c.length; i++) { |
| char ch = c[i]; |
| if (d1 == -1) { |
| d1 = Character.digit(ch, 16); |
| } else { |
| d2 = Character.digit(ch, 16); |
| if (d2 != -1) { |
| t[n++] = (byte)((d1 << 4) | d2); |
| d1 = -1; |
| d2 = -1; |
| } |
| } |
| } |
| if (d1 != -1) { |
| throw new RuntimeException(); |
| } |
| if (n == t.length) { |
| return t; |
| } |
| byte[] b = new byte[n]; |
| System.arraycopy(t, 0, b, 0, n); |
| return b; |
| } |
| |
| private final static SecretKey KEY1 = |
| new SecretKeySpec(toByteArray("636869636b656e207465726979616b69"), |
| "AES"); |
| |
| private final static IvParameterSpec IV1 = |
| new IvParameterSpec(new byte[16]); |
| |
| /* |
| * Use test vectors, i.e. PLAIN1 and CIPHER1, from the appendix B |
| * of RFC 3962 "Advanced Encryption Standard (AES) Encryption for |
| * Kerberos 5". |
| */ |
| private final static byte[][] PLAIN1 = { |
| toByteArray("4920776f756c64206c696b652074686520"), |
| toByteArray("4920776f756c64206c696b6520746865" + |
| "2047656e6572616c20476175277320"), |
| toByteArray("4920776f756c64206c696b6520746865" + |
| "2047656e6572616c2047617527732043"), |
| toByteArray("4920776f756c64206c696b6520746865" + |
| "2047656e6572616c2047617527732043" + |
| "6869636b656e2c20706c656173652c"), |
| toByteArray("4920776f756c64206c696b6520746865" + |
| "2047656e6572616c2047617527732043" + |
| "6869636b656e2c20706c656173652c20"), |
| toByteArray("4920776f756c64206c696b6520746865" + |
| "2047656e6572616c2047617527732043" + |
| "6869636b656e2c20706c656173652c20" + |
| "616e6420776f6e746f6e20736f75702e") |
| }; |
| private final static byte[][] CIPHER1 = { |
| toByteArray("c6353568f2bf8cb4d8a580362da7ff7f97"), |
| toByteArray("fc00783e0efdb2c1d445d4c8eff7ed22" + |
| "97687268d6ecccc0c07b25e25ecfe5"), |
| toByteArray("39312523a78662d5be7fcbcc98ebf5a8" + |
| "97687268d6ecccc0c07b25e25ecfe584"), |
| toByteArray("97687268d6ecccc0c07b25e25ecfe584" + |
| "b3fffd940c16a18c1b5549d2f838029e" + |
| "39312523a78662d5be7fcbcc98ebf5"), |
| toByteArray("97687268d6ecccc0c07b25e25ecfe584" + |
| "9dad8bbb96c4cdc03bc103e1a194bbd8" + |
| "39312523a78662d5be7fcbcc98ebf5a8"), |
| toByteArray("97687268d6ecccc0c07b25e25ecfe584" + |
| "39312523a78662d5be7fcbcc98ebf5a8" + |
| "4807efe836ee89a526730dbc2f7bc840" + |
| "9dad8bbb96c4cdc03bc103e1a194bbd8"), |
| }; |
| |
| private final static byte[] IV2_SRC = |
| toByteArray("11223344556677880011223344556677"); |
| |
| private final static String[] ALGORITHMS2 = { |
| "DES", "DESede", "Blowfish", "AES" |
| }; |
| private final static int[] KEYSIZES2 = { |
| 8, 24, 16, 16 |
| }; |
| |
| private static String toString(byte[] b) { |
| StringBuffer sb = new StringBuffer(b.length * 3); |
| for (int i = 0; i < b.length; i++) { |
| int k = b[i] & 0xff; |
| if (i != 0) { |
| sb.append(':'); |
| } |
| sb.append(Character.forDigit(k >> 4, 16)); |
| sb.append(Character.forDigit(k & 0xf, 16)); |
| } |
| return sb.toString(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| test1(); |
| test2(); |
| test3(); |
| } |
| |
| /** |
| * Test with the test vectors and see if results match. |
| */ |
| private static void test1() throws Exception { |
| for (int i = 0; i < PLAIN1.length; i++) { |
| String algo = KEY1.getAlgorithm(); |
| int MAX_KEYSIZE = Cipher.getMaxAllowedKeyLength(algo); |
| if (KEY1.getEncoded().length > MAX_KEYSIZE) { |
| // skip tests using keys whose length exceeds |
| // what's configured in jce jurisdiction policy files. |
| continue; |
| } |
| System.out.println("Running test1_" + i + " (" + algo + ")"); |
| Cipher cipher = Cipher.getInstance(algo+ "/CTS/NoPadding", |
| "SunJCE"); |
| byte[] plainText = PLAIN1[i]; |
| byte[] cipherText = CIPHER1[i]; |
| cipher.init(Cipher.ENCRYPT_MODE, KEY1, IV1); |
| byte[] enc = cipher.doFinal(plainText); |
| if (Arrays.equals(cipherText, enc) == false) { |
| System.out.println("plain: " + toString(plainText)); |
| System.out.println("cipher: " + toString(cipherText)); |
| System.out.println("actual: " + toString(enc)); |
| throw new RuntimeException("Encryption failure for test " + i); |
| } |
| cipher.init(Cipher.DECRYPT_MODE, KEY1, IV1); |
| byte[] dec = cipher.doFinal(cipherText); |
| if (Arrays.equals(plainText, dec) == false) { |
| System.out.println("cipher: " + toString(cipherText)); |
| System.out.println("plain: " + toString(plainText)); |
| System.out.println("actual: " + toString(enc)); |
| throw new RuntimeException("Decryption failure for test " + i); |
| } |
| } |
| } |
| |
| /** |
| * Test with a combination of update/doFinal calls and make |
| * sure that same data is recovered after decryption. |
| */ |
| private static void test2() throws Exception { |
| for (int i = 0; i < ALGORITHMS2.length; i++) { |
| String algo = ALGORITHMS2[i]; |
| System.out.println("Running test2_" + i + " (" + algo + ")"); |
| int keySize = KEYSIZES2[i]; |
| int MAX_KEYSIZE = Cipher.getMaxAllowedKeyLength(algo); |
| if (keySize > MAX_KEYSIZE) { |
| // skip tests using keys whose length exceeds |
| // what's configured in jce jurisdiction policy files. |
| continue; |
| } |
| Cipher cipher = |
| Cipher.getInstance(algo+"/CTS/NoPadding", "SunJCE"); |
| int blockSize = cipher.getBlockSize(); |
| SecretKeySpec key = new SecretKeySpec(new byte[keySize], algo); |
| // Make sure encryption works for inputs with valid length |
| byte[] plainText = PLAIN1[3]; |
| cipher.init(Cipher.ENCRYPT_MODE, key); |
| byte[] cipherText = new byte[plainText.length]; |
| int firstPartLen = blockSize + 1; |
| int processed1 = cipher.update(plainText, 0, firstPartLen, |
| cipherText, 0); |
| int processed2 = cipher.doFinal(plainText, firstPartLen, |
| plainText.length-firstPartLen, |
| cipherText, processed1); |
| AlgorithmParameters params = cipher.getParameters(); |
| if ((processed1 + processed2) != plainText.length) { |
| System.out.println("processed1 = " + processed1); |
| System.out.println("processed2 = " + processed2); |
| System.out.println("total length = " + plainText.length); |
| throw new RuntimeException("Encryption failure for test " + i); |
| } |
| // Make sure IllegalBlockSizeException is thrown for inputs |
| // with less-than-a-block length |
| try { |
| cipher.doFinal(new byte[blockSize-1]); |
| throw new RuntimeException("Expected IBSE is not thrown"); |
| } catch (IllegalBlockSizeException ibse) { |
| } |
| // Make sure data is encrypted as in CBC mode for inputs |
| // which is exactly one block long |
| IvParameterSpec iv2 = new IvParameterSpec(IV2_SRC, 0, blockSize); |
| cipher.init(Cipher.ENCRYPT_MODE, key, iv2); |
| Cipher cipher2 = |
| Cipher.getInstance(algo+"/CBC/NoPadding", "SunJCE"); |
| cipher2.init(Cipher.ENCRYPT_MODE, key, iv2); |
| |
| byte[] eout = cipher.doFinal(IV2_SRC, 0, blockSize); |
| byte[] eout2 = cipher2.doFinal(IV2_SRC, 0, blockSize); |
| if (!Arrays.equals(eout, eout2)) { |
| throw new RuntimeException("Different encryption output " + |
| "for CBC and CTS"); |
| } |
| // Make sure decryption works for inputs with valid length |
| cipher.init(Cipher.DECRYPT_MODE, key, params); |
| byte[] recoveredText = |
| new byte[cipher.getOutputSize(cipherText.length)]; |
| processed1 = cipher.update(cipherText, 0, firstPartLen, |
| recoveredText, 0); |
| processed2 = cipher.update(cipherText, firstPartLen, |
| cipherText.length-firstPartLen, |
| recoveredText, processed1); |
| int processed3 = |
| cipher.doFinal(recoveredText, processed1+processed2); |
| if ((processed1 + processed2 + processed3) != plainText.length) { |
| System.out.println("processed1 = " + processed1); |
| System.out.println("processed2 = " + processed2); |
| System.out.println("processed3 = " + processed3); |
| System.out.println("total length = " + plainText.length); |
| throw new RuntimeException("Decryption failure for test " + i); |
| } |
| if (Arrays.equals(plainText, recoveredText) == false) { |
| System.out.println("plain: " + toString(plainText)); |
| System.out.println("recovered: " + toString(recoveredText)); |
| throw new RuntimeException("Decryption failure for test " + i); |
| } |
| // Make sure IllegalBlockSizeException is thrown for inputs |
| // with less-than-a-block length |
| try { |
| cipher.doFinal(new byte[blockSize-1]); |
| throw new RuntimeException("Expected IBSE is not thrown"); |
| } catch (IllegalBlockSizeException ibse) { |
| } |
| // Make sure data is decrypted as in CBC mode for inputs |
| // which is exactly one block long |
| cipher.init(Cipher.DECRYPT_MODE, key, iv2); |
| cipher2.init(Cipher.DECRYPT_MODE, key, iv2); |
| byte[] dout = cipher.doFinal(eout); |
| byte[] dout2 = cipher2.doFinal(eout2); |
| if (!Arrays.equals(dout, dout2)) { |
| throw new RuntimeException("Different decryption output " + |
| "for CBC and CTS"); |
| } |
| } |
| } |
| |
| /** |
| * Test with a shortBuffer and see if encryption/decryption |
| * still works correctly afterwards. |
| */ |
| private static void test3() throws Exception { |
| // Skip PLAIN1[0, 1, 2] due to their lengths |
| for (int i = 3; i < PLAIN1.length; i++) { |
| String algo = KEY1.getAlgorithm(); |
| System.out.println("Running test3_" + i + " (" + algo + ")"); |
| int MAX_KEYSIZE = Cipher.getMaxAllowedKeyLength(algo); |
| if (KEY1.getEncoded().length > MAX_KEYSIZE) { |
| // skip tests using keys whose length exceeds |
| // what's configured in jce jurisdiction policy files. |
| continue; |
| } |
| Cipher cipher = |
| Cipher.getInstance(algo+ "/CTS/NoPadding", "SunJCE"); |
| byte[] plainText = PLAIN1[i]; |
| byte[] cipherText = CIPHER1[i]; |
| byte[] enc = new byte[plainText.length]; |
| cipher.init(Cipher.ENCRYPT_MODE, KEY1, IV1); |
| int halfInput = plainText.length/2; |
| int processed1 = cipher.update(plainText, 0, halfInput, |
| enc, 0); |
| try { |
| cipher.doFinal(plainText, halfInput, |
| plainText.length-halfInput, |
| new byte[1], 0); |
| throw new RuntimeException("Expected Exception is not thrown"); |
| } catch (ShortBufferException sbe) { |
| // expected exception thrown; retry |
| int processed2 = |
| cipher.doFinal(plainText, halfInput, |
| plainText.length-halfInput, |
| enc, processed1); |
| if ((processed1 + processed2) != enc.length) { |
| System.out.println("processed1 = " + processed1); |
| System.out.println("processed2 = " + processed2); |
| System.out.println("total length = " + enc.length); |
| throw new RuntimeException("Encryption length check " + |
| "failed"); |
| } |
| } |
| if (Arrays.equals(cipherText, enc) == false) { |
| System.out.println("plain: " + toString(plainText)); |
| System.out.println("cipher: " + toString(cipherText)); |
| System.out.println("actual: " + toString(enc)); |
| throw new RuntimeException("Encryption failure for test " + i); |
| } |
| cipher.init(Cipher.DECRYPT_MODE, KEY1, IV1); |
| byte[] dec = |
| new byte[cipher.getOutputSize(cipherText.length)]; |
| processed1 = cipher.update(cipherText, 0, halfInput, |
| dec, 0); |
| try { |
| cipher.update(cipherText, halfInput, |
| cipherText.length-halfInput, |
| new byte[1], 0); |
| throw new RuntimeException("Expected Exception is not thrown"); |
| } catch (ShortBufferException sbe) { |
| // expected exception thrown; retry |
| int processed2 = cipher.update(cipherText, halfInput, |
| cipherText.length-halfInput, |
| dec, processed1); |
| int processed3 = |
| cipher.doFinal(dec, processed1+processed2); |
| if ((processed1 + processed2 + processed3) != dec.length) { |
| System.out.println("processed1 = " + processed1); |
| System.out.println("processed2 = " + processed2); |
| System.out.println("processed3 = " + processed3); |
| System.out.println("total length = " + dec.length); |
| throw new RuntimeException("Decryption length check " + |
| "failed"); |
| } |
| } |
| if (Arrays.equals(plainText, dec) == false) { |
| System.out.println("cipher: " + toString(cipherText)); |
| System.out.println("plain: " + toString(plainText)); |
| System.out.println("actualD: " + toString(dec)); |
| throw new RuntimeException("Decryption failure for test " + i); |
| } |
| } |
| } |
| } |
