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* 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
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*
* 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 .
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*/
/**
* @ test
* @ bug 6946830
* @ summary Test the Cipher . doFinal ( ) with 0 - length buffer
* @ key randomness
*/
import java.util.*;
import java.nio.*;
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
public class EmptyFinalBuffer {
private static final String[] ALGOS = {
"AES/ECB/PKCS5Padding" , "AES/CBC/PKCS5Padding"
};
public static void main(String[] args) throws Exception {
Provider[] provs = Security.getProviders();
SecretKey key = new SecretKeySpec(new byte [16 ], "AES" );
boolean testFailed = false ;
for (Provider p : provs) {
System.out.println("Testing: " + p.getName());
for (String algo : ALGOS) {
System.out.print("Algo: " + algo);
Cipher c;
try {
c = Cipher.getInstance(algo, p);
} catch (NoSuchAlgorithmException nsae) {
// skip
System.out.println("=> No Support" );
continue ;
}
c.init(Cipher.ENCRYPT_MODE, key);
AlgorithmParameters params = c.getParameters();
c.init(Cipher.DECRYPT_MODE, key, params);
try {
byte [] out = c.doFinal(new byte [0 ]);
System.out.println("=> Accepted w/ " +
(out == null ? "null" : (out.length + "-byte" )) +
" output" );
} catch (Exception e) {
testFailed = true ;
System.out.println("=> Rejected w/ Exception" );
e.printStackTrace();
}
}
}
if (testFailed) {
throw new Exception("One or more tests failed" );
} else {
System.out.println("All tests passed" );
}
}
}
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