0N/A/*
2362N/A * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
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0N/A */
0N/A
0N/A/**
0N/A * @test
0N/A * @bug 4168409
0N/A * @summary SecureRandom forces all instances to self-seed, even if a seed is
0N/A * provided
0N/A */
0N/A
0N/Aimport java.security.SecureRandom;
0N/A
0N/Apublic class SelfSeed {
0N/A
0N/A private static final int NUM_BYTES = 5;
0N/A private static byte seed[] = { (byte)0xaa, (byte)0x11, (byte)0xa1 };
0N/A
0N/A public static void main(String[] args) {
0N/A
0N/A try {
0N/A SecureRandom sr1 = SecureRandom.getInstance("SHA1PRNG");
0N/A sr1.setSeed(seed);
0N/A byte randomBytes[] = new byte[NUM_BYTES];
0N/A sr1.nextBytes(randomBytes);
0N/A
0N/A SecureRandom sr2 = new SecureRandom(seed);
0N/A if (sr2.getAlgorithm().equals("SHA1PRNG") == false) {
0N/A System.out.println("Default PRNG is not SHA1PRNG, skipping test");
0N/A return;
0N/A }
0N/A byte otherRandomBytes[] = new byte[NUM_BYTES];
0N/A sr2.nextBytes(otherRandomBytes);
0N/A
0N/A // make sure the random bytes generated are the same
0N/A for (int i = 0; i < NUM_BYTES; i++) {
0N/A if (randomBytes[i] != otherRandomBytes[i])
0N/A throw new SecurityException("FAILURE: " +
0N/A "Returned bytes not equal");
0N/A }
0N/A
0N/A // success
0N/A } catch (Exception e) {
0N/A throw new SecurityException("FAILURE: " + e.toString());
0N/A }
0N/A }
0N/A}