| /* |
| * Copyright (c) 2006, 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 6449335 |
| * @summary MSCAPI's PRNG is too slow |
| */ |
| |
| import java.security.SecureRandom; |
| |
| public class PrngSlow { |
| |
| public static void main(String[] args) throws Exception { |
| double t = 0.0; |
| try { |
| SecureRandom sr = null; |
| sr = SecureRandom.getInstance("PRNG", "SunMSCAPI"); |
| long start = System.nanoTime(); |
| int x = 0; |
| for(int i = 0; i < 10000; i++) { |
| if (i % 100 == 0) System.err.print("."); |
| if (sr.nextBoolean()) x++; |
| }; |
| t = (System.nanoTime() - start) / 1000000000.0; |
| System.err.println("\nSpend " + t + " seconds"); |
| } catch (Exception e) { |
| // Not supported here, maybe not a Win32 |
| System.err.println("Cannot find PRNG for SunMSCAPI or other mysterious bugs"); |
| e.printStackTrace(); |
| return; |
| } |
| if (t > 5) |
| throw new RuntimeException("Still too slow"); |
| } |
| } |