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* version 2 for more details ( a copy is included in the LICENSE file that
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* 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 8048603 8242332
* @ summary Check if doFinal and update operation result in same Mac
* @ author Yu - Ching Valerie Peng , Bill Situ , Alexander Fomin
* @ library / test / lib . .
* @ modules jdk . crypto . cryptoki
* @ run main / othervm MacSameTest
* @ run main / othervm - Djava . security . manager = allow MacSameTest sm
* @ key randomness
*/
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Provider;
import java.security.SecureRandom;
import java.util.List;
import javax.crypto.Mac;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class MacSameTest extends PKCS11Test {
private static final int MESSAGE_SIZE = 25 ;
private static final int OFFSET = 5 ;
private static final int KEY_SIZE = 128 ;
/**
* Initialize a message , instantiate a Mac object ,
* initialize the object with a SecretKey ,
* feed the message into the Mac object
* all at once and get the output MAC as result1 .
* Reset the Mac object , chop the message into three pieces ,
* feed into the Mac object sequentially , and get the output MAC as result2 .
* Finally , compare result1 and result2 and see if they are the same .
*
* @ param args the command line arguments
*/
public static void main(String[] args) throws Exception {
main(new MacSameTest(), args);
}
@Override
public void main(Provider p) {
List<String> algorithms = getSupportedAlgorithms("Mac" , "Hmac" , p);
boolean success = true ;
SecureRandom srdm = new SecureRandom();
for (String alg : algorithms) {
// first try w/ java secret key object
byte [] keyVal = new byte [KEY_SIZE];
srdm.nextBytes(keyVal);
SecretKey skey = new SecretKeySpec(keyVal, alg);
try {
doTest(alg, skey, p);
} catch (Exception e) {
System.out.println("Unexpected exception: " + e);
e.printStackTrace();
success = false ;
}
try {
KeyGenerator kg = KeyGenerator.getInstance(alg, p);
kg.init(KEY_SIZE);
skey = kg.generateKey();
doTest(alg, skey, p);
} catch (NoSuchAlgorithmException nsae) {
System.out.println("Skip test using native key for " + alg);
continue ;
} catch (Exception e) {
System.out.println("Unexpected exception: " + e);
e.printStackTrace();
success = false ;
}
}
if (!success) {
throw new RuntimeException("Test failed" );
}
}
private void doTest(String algo, SecretKey key, Provider provider)
throws NoSuchAlgorithmException, NoSuchProviderException,
InvalidKeyException {
System.out.println("Test " + algo);
Mac mac = Mac.getInstance(algo, provider);
byte [] plain = new byte [MESSAGE_SIZE];
for (int i = 0 ; i < MESSAGE_SIZE; i++) {
plain[i] = (byte ) (i % 256 );
}
byte [] tail = new byte [plain.length - OFFSET];
System.arraycopy(plain, OFFSET, tail, 0 , tail.length);
mac.init(key);
byte [] result1 = mac.doFinal(plain);
mac.reset();
mac.update(plain[0 ]);
mac.update(plain, 1 , OFFSET - 1 );
byte [] result2 = mac.doFinal(tail);
if (!java.util.Arrays.equals(result1, result2)) {
throw new RuntimeException("result1 and result2 are not the same" );
}
}
}
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