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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.
*/
/*
* @test
* @bug 8014374
* @summary Ensure key wrap/unwrap works using AES/GCM/NoPadding
* @key randomness
*/
import java.io.*;
import java.security.*;
import java.security.spec.*;
import java.util.*;
import javax.crypto.*;
import javax.crypto.spec.*;
public class TestGCMKeyWrap extends UcryptoTest {
public static void main(String[] args) throws Exception {
main(new TestGCMKeyWrap(), null);
}
public void doTest(Provider p) throws Exception {
// check if GCM support exists
try {
Cipher.getInstance("AES/GCM/NoPadding", p);
} catch (NoSuchAlgorithmException nsae) {
System.out.println("Skipping Test due to no GCM support");
return;
}
Random rdm = new Random();
//init Secret Key
byte[] keyValue = new byte[16];
rdm.nextBytes(keyValue);
SecretKey key = new SecretKeySpec(keyValue, "AES");
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding", p);
cipher.init(Cipher.WRAP_MODE, key);
byte[] wrappedKey = cipher.wrap(key);
try { // make sure ISE is thrown if re-using the same key/IV
wrappedKey = cipher.wrap(key);
throw new Exception("FAIL: expected ISE not thrown");
} catch(IllegalStateException ise){
System.out.println("Expected ISE thrown for re-wrapping");
}
//unwrap the key
AlgorithmParameters params = cipher.getParameters();
cipher.init(Cipher.UNWRAP_MODE, key, params);
Key unwrappedKey = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
//check if we can unwrap second time
unwrappedKey = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
// Comparison
if (!Arrays.equals(key.getEncoded(), unwrappedKey.getEncoded())) {
throw new Exception("FAIL: keys are not equal");
} else {
System.out.println("Passed key equality check");
}
}
}
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