107 lines
3.6 KiB
Java
107 lines
3.6 KiB
Java
/*
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* Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4102896
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* @summary Make sure that a SecureRandom object can be serialized
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* @run main/othervm Serialize
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*/
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import java.security.*;
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import java.io.*;
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public class Serialize {
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public static void main(String args[]) throws Exception {
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System.setProperty("java.security.egd", "file:/dev/urandom");
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for (String alg: new String[]{
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"SHA1PRNG", "DRBG", "Hash_DRBG", "HMAC_DRBG", "CTR_DRBG",
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"Hash_DRBG,SHA-512,192,pr_and_reseed"}) {
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System.out.println("Testing " + alg);
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SecureRandom s1;
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// A SecureRandom can be s11ned and des11ned at any time.
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// Brand new.
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s1 = getInstance(alg);
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revive(s1).nextInt();
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if (alg.contains("DRBG")) {
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revive(s1).reseed();
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}
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// Used
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s1 = getInstance(alg);
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s1.nextInt(); // state set
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revive(s1).nextInt();
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if (alg.contains("DRBG")) {
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revive(s1).reseed();
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}
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// Automatically reseeded
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s1 = getInstance(alg);
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if (alg.contains("DRBG")) {
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s1.reseed();
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}
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revive(s1).nextInt();
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if (alg.contains("DRBG")) {
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revive(s1).reseed();
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}
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// Manually seeded
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s1 = getInstance(alg);
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s1.setSeed(1L);
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revive(s1).nextInt();
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if (alg.contains("DRBG")) {
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revive(s1).reseed();
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}
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}
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}
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private static SecureRandom getInstance(String alg) throws Exception {
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if (alg.equals("SHA1PRNG") || alg.equals("DRBG")) {
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return SecureRandom.getInstance(alg);
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} else {
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String old = Security.getProperty("securerandom.drbg.config");
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try {
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Security.setProperty("securerandom.drbg.config", alg);
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return SecureRandom.getInstance("DRBG");
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} finally {
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Security.setProperty("securerandom.drbg.config", old);
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}
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}
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}
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private static SecureRandom revive(SecureRandom oldOne) throws Exception {
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ByteArrayOutputStream bout = new ByteArrayOutputStream();
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new ObjectOutputStream(bout).writeObject(oldOne);
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SecureRandom newOne = (SecureRandom) new ObjectInputStream(
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new ByteArrayInputStream(bout.toByteArray())).readObject();
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if (!oldOne.toString().equals(newOne.toString())) {
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throw new Exception(newOne + " is not " + oldOne);
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}
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return newOne;
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}
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}
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