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/*
* Copyright (c) 2014, 2024, 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.
*/
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.spec.AlgorithmParameterSpec;
import java.util.Arrays;
import java.util.Random;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.ShortBufferException;
import javax.crypto.spec.IvParameterSpec;
/**
* @test
* @bug 8043836
* @summary Test AES ciphers with 4 different modes with NoPadding. Check if
* data before encryption and after decryption is the same.
* @key randomness
*/
public class CTR {
private static final String ALGORITHM = "AES";
private static final String PROVIDER =
System.getProperty("test.provider.name", "SunJCE");
private static final String[] MODES = {"CTR","CFB24","OFB32","GCM"};
private static final String PADDING = "NoPadding";
private static final int KEY_LENGTH = 128;
public static void main(String argv[]) throws Exception {
CTR test = new CTR();
for (String mode : MODES) {
test.runTest(ALGORITHM, mode, PADDING);
}
}
public void runTest(String algo, String mo, String pad) throws Exception {
Cipher ci = null;
byte[] iv = null;
AlgorithmParameterSpec aps = null;
SecretKey key = null;
try {
Random rdm = new Random();
byte[] plainText;
ci = Cipher.getInstance(algo + "/" + mo + "/" + pad, PROVIDER);
KeyGenerator kg = KeyGenerator.getInstance(algo, PROVIDER);
kg.init(KEY_LENGTH);
key = kg.generateKey();
for (int i = 0; i < 15; i++) {
plainText = new byte[1600 + i + 1];
rdm.nextBytes(plainText);
if (!mo.equalsIgnoreCase("GCM")) {
ci.init(Cipher.ENCRYPT_MODE, key, aps);
} else {
ci.init(Cipher.ENCRYPT_MODE, key);
}
byte[] cipherText = new byte[ci.getOutputSize(plainText.length)];
int offset = ci.update(plainText, 0, plainText.length,
cipherText, 0);
ci.doFinal(cipherText, offset);
if (!mo.equalsIgnoreCase("ECB")) {
iv = ci.getIV();
aps = new IvParameterSpec(iv);
} else {
aps = null;
}
if (!mo.equalsIgnoreCase("GCM")) {
ci.init(Cipher.DECRYPT_MODE, key, aps);
} else {
ci.init(Cipher.DECRYPT_MODE, key, ci.getParameters());
}
byte[] recoveredText = new byte[ci.getOutputSize(cipherText.length)];
int len = ci.doFinal(cipherText, 0, cipherText.length,
recoveredText);
byte[] tmp = new byte[len];
for (int j = 0; j < len; j++) {
tmp[j] = recoveredText[j];
}
Arrays.toString(plainText);
if (!java.util.Arrays.equals(plainText, tmp)) {
System.out.println("Original: ");
dumpBytes(plainText);
System.out.println("Recovered: ");
dumpBytes(tmp);
throw new RuntimeException("Original text is not equal with recovered text, with mode:" + mo);
}
}
} catch (NoSuchAlgorithmException | NoSuchProviderException | NoSuchPaddingException
| InvalidKeyException | InvalidAlgorithmParameterException
| ShortBufferException | IllegalBlockSizeException
| BadPaddingException e) {
System.out.println("Test failed!");
throw e;
}
}
private void dumpBytes(byte[] bytes){
for (byte b : bytes){
System.out.print(Integer.toHexString(b));
}
System.out.println();
}
}
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