| /* |
| * Copyright (c) 2003, 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 4915392 8141039 |
| * @summary test that the getAlgorithm() method works correctly |
| * @author Andreas Sterbenz |
| * @run main GetAlgorithm |
| */ |
| import java.io.*; |
| import java.security.*; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| public class GetAlgorithm { |
| |
| private static final String BASE = System.getProperty("test.src", "."); |
| private static final String DRBG_CONFIG = "securerandom.drbg.config"; |
| private static final String DRBG_CONFIG_VALUE |
| = Security.getProperty(DRBG_CONFIG); |
| |
| public static void main(String[] args) throws Exception { |
| SecureRandom sr = new SecureRandom(); |
| if (sr.getAlgorithm().equals("unknown")) { |
| throw new Exception("Unknown: " + sr.getAlgorithm()); |
| } |
| |
| for (String mech : new String[]{supportedNativeAlgo(), "SHA1PRNG", |
| "Hash_DRBG", "HMAC_DRBG", "CTR_DRBG"}) { |
| if (!mech.contains("_DRBG")) { |
| check(mech, SecureRandom.getInstance(mech)); |
| } else { |
| try { |
| Security.setProperty(DRBG_CONFIG, mech); |
| check("DRBG", SecureRandom.getInstance("DRBG")); |
| } finally { |
| Security.setProperty(DRBG_CONFIG, DRBG_CONFIG_VALUE); |
| } |
| } |
| } |
| check("unknown", new MySecureRandom()); |
| |
| InputStream in = new FileInputStream( |
| new File(BASE, "sha1prng-old.bin")); |
| ObjectInputStream oin = new ObjectInputStream(in); |
| sr = (SecureRandom) oin.readObject(); |
| oin.close(); |
| check("unknown", sr); |
| |
| in = new FileInputStream(new File(BASE, "sha1prng-new.bin")); |
| oin = new ObjectInputStream(in); |
| sr = (SecureRandom) oin.readObject(); |
| oin.close(); |
| check("SHA1PRNG", sr); |
| |
| System.out.println("All tests passed"); |
| } |
| |
| private static void check(String s1, SecureRandom sr) throws Exception { |
| String s2 = sr.getAlgorithm(); |
| if (s1.equals(s2) == false) { |
| throw new Exception("Expected " + s1 + ", got " + s2); |
| } |
| } |
| |
| private static class MySecureRandom extends SecureRandom { |
| |
| } |
| |
| /** |
| * Find the name of supported native mechanism name for current platform. |
| */ |
| private static String supportedNativeAlgo() { |
| String nativeSr = "Windows-PRNG"; |
| try { |
| SecureRandom.getInstance(nativeSr); |
| } catch (NoSuchAlgorithmException e) { |
| nativeSr = "NativePRNG"; |
| } |
| return nativeSr; |
| } |
| |
| } |