| /* |
| * Copyright (c) 2016, 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. |
| */ |
| |
| import java.security.Provider; |
| import java.security.SecureRandom; |
| import java.security.Security; |
| import java.util.Date; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| /* |
| * @test |
| * @bug 7004967 |
| * @run main/othervm NoSync |
| * @summary SecureRandom should be more explicit about threading |
| */ |
| public class NoSync { |
| public static void main(String[] args) throws Exception { |
| for (Provider p : Security.getProviders()) { |
| for (Provider.Service s : p.getServices()) { |
| if (s.getType().equals("SecureRandom") && |
| !s.getAlgorithm().contains("Block")) { |
| test(SecureRandom.getInstance(s.getAlgorithm(), p)); |
| } |
| } |
| } |
| Security.setProperty("securerandom.drbg.config", "HMAC_DRBG"); |
| test(SecureRandom.getInstance("DRBG")); |
| Security.setProperty("securerandom.drbg.config", "CTR_DRBG"); |
| test(SecureRandom.getInstance("DRBG")); |
| } |
| |
| static void test(SecureRandom sr) throws Exception { |
| test(sr, 20, 3000); |
| // All out-of-box impl should have the ThreadSafe attribute |
| String attr = sr.getProvider().getProperty("SecureRandom." |
| + sr.getAlgorithm() + " ThreadSafe"); |
| if (!"true".equals(attr)) { |
| throw new Exception("Not ThreadSafe: " + attr); |
| } |
| } |
| |
| public static void test(SecureRandom sr, int tnum, int rnum) |
| throws Exception { |
| |
| System.out.println(sr); |
| System.out.println(sr.getAlgorithm() + " " + sr.getProvider().getName()); |
| |
| System.out.println(new Date()); |
| boolean reseed = sr.getParameters() != null; |
| Thread[] threads = new Thread[tnum]; |
| AtomicBoolean failed = new AtomicBoolean(false); |
| Thread.UncaughtExceptionHandler h = (t, e) -> { |
| failed.set(true); |
| e.printStackTrace(); |
| }; |
| for (int i = 0; i < threads.length; i++) { |
| threads[i] = new Thread() { |
| @Override |
| public void run() { |
| for (int j = 0; j < rnum; j++) { |
| sr.nextBytes(new byte[j%100+100]); |
| sr.setSeed((long)j); |
| if (reseed) { |
| sr.reseed(); |
| } |
| } |
| } |
| }; |
| threads[i].setUncaughtExceptionHandler(h); |
| threads[i].start(); |
| } |
| for (int i = 0; i < threads.length; i++) { |
| threads[i].join(); |
| } |
| System.out.println(new Date()); |
| System.out.println(); |
| if (failed.get()) { |
| throw new RuntimeException("Failed"); |
| } |
| } |
| } |