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/*
* Copyright (c) 2023, 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 8155191
* @summary check NPE is thrown for various methods of SecureRandom class,
* e.g. SecureRandom(byte[]), nextBytes(byte[]), and setSeed(byte[]).
* @run main NextBytesNull
*/
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.SecureRandom;
import java.security.SecureRandomSpi;
public class NextBytesNull {
public static void main(String[] args) throws Exception {
String test = "SecureRandom(null)";
try {
new SecureRandom(null);
throw new RuntimeException("Error: NPE not thrown for " + test);
} catch (NullPointerException e) {
System.out.println("OK, expected NPE thrown for " + test);
}
// verify with an Spi impl which does not throw NPE
SecureRandom sr = SecureRandom.getInstance("S1", new P());
try {
sr.nextBytes(null);
throw new RuntimeException("Error: NPE not thrown");
} catch (NullPointerException npe) {
System.out.println("OK, expected NPE thrown for " + test);
}
try {
sr.setSeed(null);
throw new RuntimeException("Error: NPE not thrown for " + test);
} catch (NullPointerException npe) {
System.out.println("OK, expected NPE thrown for " + test);
}
}
public static final class P extends Provider {
public P() {
super("P", 1.0d, "Test Provider without Null Check");
put("SecureRandom.S1", S.class.getName());
}
}
public static final class S extends SecureRandomSpi {
@Override
protected void engineSetSeed(byte[] seed) {
}
@Override
protected void engineNextBytes(byte[] bytes) {
}
@Override
protected byte[] engineGenerateSeed(int numBytes) {
return new byte[numBytes];
}
}
}
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