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/*
* Copyright (c) 2014, 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.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.spec.InvalidParameterSpecException;
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.GCMParameterSpec;
/**
* @test
* @bug 8043836
* @summary Test AES encryption with no padding. Expect the original data length
* is the same as the encrypted data.
* @key randomness
*/
public class TestNonexpanding {
private static final String ALGORITHM = "AES";
private static final String PROVIDER = "SunJCE";
private static final String[] MODES = { "ECb", "CbC", "OFB", "OFB150",
"cFB", "CFB7", "cFB8", "cFB16", "cFB24", "cFB32", "Cfb40", "cfB48",
"cfB56", "cfB64", "cfB72", "cfB80", "cfB88", "cfB96", "cfb104",
"cfB112", "cfB120", "GCM" };
private static final String PADDING = "NoPadding";
private static final int KEY_LENGTH = 128;
public static void main(String argv[]) throws Exception {
TestNonexpanding test = new TestNonexpanding();
for (String mode : MODES) {
test.runTest(ALGORITHM, mode, PADDING);
}
}
public void runTest(String algo, String mo, String pad) throws Exception {
Cipher ci = null;
SecretKey key = null;
try {
// Initialization
Random rdm = new Random();
byte[] plainText = new byte[128];
rdm.nextBytes(plainText);
ci = Cipher.getInstance(algo + "/" + mo + "/" + pad, PROVIDER);
KeyGenerator kg = KeyGenerator.getInstance(algo, PROVIDER);
kg.init(KEY_LENGTH);
key = kg.generateKey();
// encrypt
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);
// Comparison
if (!(plainText.length == cipherText.length)) {
// The result of encryption in GCM is a combination of an
// authentication tag and cipher text.
if (mo.equalsIgnoreCase("GCM")) {
GCMParameterSpec spec = ci.getParameters().getParameterSpec(GCMParameterSpec.class);
int cipherTextLength = cipherText.length - spec.getTLen()
/ 8;
if (plainText.length == cipherTextLength) {
return;
}
}
System.out.println("Original length: " + plainText.length);
System.out.println("Cipher text length: " + cipherText.length);
throw new RuntimeException("Test failed!");
}
} catch (NoSuchAlgorithmException e) {
//CFB7 and OFB150 are for negative testing
if (!mo.equalsIgnoreCase("CFB7") && !mo.equalsIgnoreCase("OFB150")) {
System.out.println("Unexpected NoSuchAlgorithmException with mode: "
+ mo);
throw new RuntimeException("Test failed!");
}
} catch ( NoSuchProviderException | NoSuchPaddingException
| InvalidKeyException | InvalidParameterSpecException
| ShortBufferException | IllegalBlockSizeException
| BadPaddingException e) {
System.out.println("Test failed!");
throw e;
}
}
}
|
