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* version 2 for more details ( a copy is included in the LICENSE file that
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/*
* @ test
* @ bug 4937853 8170876
* @ summary Make sure normal calls of NullCipher does not throw NPE .
* @ author Valerie Peng
* @ key randomness
* @ run main TestNPE
* @ run main / othervm - Djava . security . debug = provider TestNPE
*/
import java.util.Arrays;
import java.security.AlgorithmParameters;
import java.security.Key;
import java.security.SecureRandom;
import java.security.cert.Certificate;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.Cipher;
import javax.crypto.NullCipher;
import javax.crypto.spec.SecretKeySpec;
public class TestNPE {
private static byte [] BYTES = new byte [16 ];
static {
new SecureRandom().nextBytes(BYTES);
}
public static void main(String[] args) throws Exception {
NullCipher nc = new NullCipher();
// testing init(...)
nc.init(Cipher.ENCRYPT_MODE, (Certificate) null );
nc.init(Cipher.ENCRYPT_MODE, (Certificate) null , (SecureRandom) null );
nc.init(Cipher.ENCRYPT_MODE, (Key) null );
nc.init(Cipher.ENCRYPT_MODE, (Key) null , (AlgorithmParameters) null );
nc.init(Cipher.ENCRYPT_MODE, (Key) null , (AlgorithmParameterSpec) null );
nc.init(Cipher.ENCRYPT_MODE, (Key) null , (AlgorithmParameterSpec) null ,
(SecureRandom) null );
nc.init(Cipher.ENCRYPT_MODE, (Key) null , (AlgorithmParameters) null ,
(SecureRandom) null );
nc.init(Cipher.ENCRYPT_MODE, (Key) null , (SecureRandom) null );
// testing getBlockSize()
if (nc.getBlockSize() != 1 ) {
throw new Exception("Error with getBlockSize()" );
}
// testing update(...)
byte [] out = nc.update(BYTES);
if (!Arrays.equals(out, BYTES)) {
throw new Exception("Error with update(byte[])" );
}
out = nc.update(BYTES, 0 , BYTES.length);
if (!Arrays.equals(out, BYTES)) {
throw new Exception("Error with update(byte[], int, int)" );
}
if (nc.update(BYTES, 0 , BYTES.length, out) != BYTES.length) {
throw new Exception("Error with update(byte[], int, int, byte[])" );
}
if (nc.update(BYTES, 0 , BYTES.length, out, 0 ) != BYTES.length) {
throw new Exception(
"Error with update(byte[], int, int, byte[], int)" );
}
// testing doFinal(...)
if (nc.doFinal() != null ) {
throw new Exception("Error with doFinal()" );
}
if (nc.doFinal(out, 0 ) != 0 ) {
throw new Exception("Error with doFinal(byte[], 0)" );
}
out = nc.doFinal(BYTES);
if (!Arrays.equals(out, BYTES)) {
throw new Exception("Error with doFinal(byte[])" );
}
out = nc.doFinal(BYTES, 0 , BYTES.length);
if (!Arrays.equals(out, BYTES)) {
throw new Exception("Error with doFinal(byte[], int, int)" );
}
if (nc.doFinal(BYTES, 0 , BYTES.length, out) != BYTES.length) {
throw new Exception(
"Error with doFinal(byte[], int, int, byte[])" );
}
if (nc.doFinal(BYTES, 0 , BYTES.length, out, 0 ) != BYTES.length) {
throw new Exception(
"Error with doFinal(byte[], int, int, byte[], int)" );
}
// testing getExemptionMechanism()
if (nc.getExemptionMechanism() != null ) {
throw new Exception("Error with getExemptionMechanism()" );
}
// testing getOutputSize(int)
if (nc.getOutputSize(5 ) != 5 ) {
throw new Exception("Error with getOutputSize()" );
}
// testing getIV(), getParameters(), getAlgorithm(), etc.
if (nc.getIV() == null ) { // should've been null;
// left it as is for backward-compatibility
throw new Exception("Error with getIV()" );
}
if (nc.getParameters() != null ) {
throw new Exception("Error with getParameters()" );
}
if (nc.getAlgorithm() != null ) {
throw new Exception("Error with getAlgorithm()" );
}
if (nc.getProvider() != null ) { // not associated with any provider
throw new Exception("Error with getProvider()" );
}
System.out.println("Test Done" );
}
}
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