| /* |
| * Copyright (c) 2013, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 6425477 8141039 |
| * @summary Better support for generation of high entropy random numbers |
| * @run main StrongSecureRandom |
| */ |
| import java.security.*; |
| import java.util.*; |
| |
| /** |
| * This test assumes that the standard Sun providers are installed. |
| */ |
| public class StrongSecureRandom { |
| |
| private static final String os = System.getProperty("os.name", "unknown"); |
| |
| private static void testDefaultEgd() throws Exception { |
| // No SecurityManager installed. |
| String s = Security.getProperty("securerandom.source"); |
| |
| System.out.println("Testing: default EGD: " + s); |
| if (!s.equals("file:/dev/random")) { |
| throw new Exception("Default is not 'file:/dev/random'"); |
| } |
| } |
| |
| private static void testNativePRNGImpls() throws Exception { |
| SecureRandom sr; |
| byte[] ba; |
| |
| System.out.println("Testing new NativePRNGImpls"); |
| |
| if (os.startsWith("Windows")) { |
| System.out.println("Skip windows testing."); |
| return; |
| } |
| |
| System.out.println("Testing regular"); |
| sr = SecureRandom.getInstance("NativePRNG"); |
| if (!sr.getAlgorithm().equals("NativePRNG")) { |
| throw new Exception("sr.getAlgorithm(): " + sr.getAlgorithm()); |
| } |
| ba = sr.generateSeed(1); |
| sr.nextBytes(ba); |
| sr.setSeed(ba); |
| |
| System.out.println("Testing NonBlocking"); |
| sr = SecureRandom.getInstance("NativePRNGNonBlocking"); |
| if (!sr.getAlgorithm().equals("NativePRNGNonBlocking")) { |
| throw new Exception("sr.getAlgorithm(): " + sr.getAlgorithm()); |
| } |
| ba = sr.generateSeed(1); |
| sr.nextBytes(ba); |
| sr.setSeed(ba); |
| |
| if (os.equals("Linux")) { |
| System.out.println("Skip Linux blocking test."); |
| return; |
| } |
| |
| System.out.println("Testing Blocking"); |
| sr = SecureRandom.getInstance("NativePRNGBlocking"); |
| if (!sr.getAlgorithm().equals("NativePRNGBlocking")) { |
| throw new Exception("sr.getAlgorithm(): " + sr.getAlgorithm()); |
| } |
| ba = sr.generateSeed(1); |
| sr.nextBytes(ba); |
| sr.setSeed(ba); |
| } |
| |
| private static void testStrongInstance(boolean expected) throws Exception { |
| |
| boolean result; |
| |
| try { |
| SecureRandom.getInstanceStrong(); |
| result = true; |
| } catch (NoSuchAlgorithmException e) { |
| result = false; |
| } |
| |
| if (expected != result) { |
| throw new Exception("Received: " + result); |
| } |
| } |
| |
| /* |
| * This test assumes that the standard providers are installed. |
| */ |
| private static void testProperty(String property, boolean expected) |
| throws Exception { |
| |
| System.out.println("Testing: '" + property + "' " + expected); |
| final String origStrongAlgoProp |
| = Security.getProperty("securerandom.strongAlgorithms"); |
| try { |
| Security.setProperty("securerandom.strongAlgorithms", property); |
| testStrongInstance(expected); |
| } finally { |
| Security.setProperty( |
| "securerandom.strongAlgorithms", origStrongAlgoProp); |
| } |
| } |
| |
| private static void testProperties() throws Exception { |
| // Sets securerandom.strongAlgorithms, and then tests various combos. |
| testProperty("", false); |
| |
| testProperty("SHA1PRNG", true); |
| testProperty(" SHA1PRNG", true); |
| testProperty("SHA1PRNG ", true); |
| testProperty(" SHA1PRNG ", true); |
| |
| // Impls are case-insenstive, providers are sensitive. |
| testProperty("SHA1PRNG:SUN", true); |
| testProperty("Sha1PRNG:SUN", true); |
| testProperty("SHA1PRNG:Sun", false); |
| |
| testProperty(" SHA1PRNG:SUN", true); |
| testProperty("SHA1PRNG:SUN ", true); |
| testProperty(" SHA1PRNG:SUN ", true); |
| |
| testProperty(" SHA1PRNG:SUn", false); |
| testProperty("SHA1PRNG:SUn ", false); |
| testProperty(" SHA1PRNG:SUn ", false); |
| |
| testProperty(",,,SHA1PRNG", true); |
| testProperty(",,, SHA1PRNG", true); |
| testProperty(" , , ,SHA1PRNG ", true); |
| |
| testProperty(",,,, SHA1PRNG ,,,", true); |
| testProperty(",,,, SHA1PRNG:SUN ,,,", true); |
| testProperty(",,,, SHA1PRNG:SUn ,,,", false); |
| |
| testProperty(",,,SHA1PRNG:Sun,, SHA1PRNG:SUN", true); |
| testProperty(",,,Sha1PRNG:Sun, SHA1PRNG:SUN", true); |
| testProperty(" SHA1PRNG:Sun, Sha1PRNG:Sun,,,,Sha1PRNG:SUN", true); |
| |
| testProperty(",,,SHA1PRNG:Sun,, SHA1PRNG:SUn", false); |
| testProperty(",,,Sha1PRNG:Sun, SHA1PRNG:SUn", false); |
| testProperty(" SHA1PRNG:Sun, Sha1PRNG:Sun,,,,Sha1PRNG:SUn", false); |
| |
| testProperty( |
| " @#%,%$#:!%^, NativePRNG:Sun, Sha1PRNG:Sun,,Sha1PRNG:SUN", |
| true); |
| testProperty(" @#%,%$#!%^, NativePRNG:Sun, Sha1PRNG:Sun,,Sha1PRNG:SUn", |
| false); |
| } |
| |
| /* |
| * Linux tends to block, so ignore anything that reads /dev/random. |
| */ |
| private static void handleLinuxRead(SecureRandom sr) throws Exception { |
| if (os.equals("Linux")) { |
| if (!sr.getAlgorithm().equalsIgnoreCase("NativePRNGBlocking")) { |
| sr.nextBytes(new byte[34]); |
| } |
| } else { |
| sr.nextBytes(new byte[34]); |
| sr.generateSeed(34); |
| sr.setSeed(new byte[34]); |
| } |
| } |
| |
| /* |
| * This is duplicating stuff above, but just iterate over all impls |
| * just in case we missed something. |
| */ |
| private static void testAllImpls() throws Exception { |
| System.out.print("Testing: AllImpls: "); |
| |
| Iterator<String> i = Security.getAlgorithms("SecureRandom").iterator(); |
| |
| while (i.hasNext()) { |
| String s = i.next(); |
| System.out.print("/" + s); |
| SecureRandom sr = SecureRandom.getInstance(s); |
| |
| handleLinuxRead(sr); |
| handleLinuxRead(sr); |
| } |
| System.out.println("/"); |
| } |
| |
| public static void main(String args[]) throws Exception { |
| testDefaultEgd(); |
| |
| testNativePRNGImpls(); |
| testAllImpls(); |
| |
| // test default. |
| testStrongInstance(true); |
| testProperties(); |
| } |
| } |