ReinitSignature.java example

Explorer
openjdk-master
/*
 * 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 4856966
 * @summary test that reinitializing Signatures works correctly
 * @author Andreas Sterbenz
 * @library ..
 * @key randomness
 * @modules jdk.crypto.pkcs11
 * @run main ReinitSignature
 * @run main ReinitSignature
 * @run main ReinitSignature
 * @run main ReinitSignature
 * @run main ReinitSignature
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 * @run main ReinitSignature
 * @run main ReinitSignature
 */

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.Provider;
import java.security.PublicKey;
import java.security.Signature;
import java.util.Random;

public class ReinitSignature extends PKCS11Test {

    public static void main(String[] args) throws Exception {
        main(new ReinitSignature());
    }

    public void main(Provider p) throws Exception {

        /*
         * Use Solaris SPARC 11.2 or later to avoid an intermittent failure
         * when running SunPKCS11-Solaris (8044554)
         */
        if (p.getName().equals("SunPKCS11-Solaris") &&
            System.getProperty("os.name").equals("SunOS") &&
            System.getProperty("os.arch").equals("sparcv9") &&
            System.getProperty("os.version").compareTo("5.11") <= 0 &&
            getDistro().compareTo("11.2") < 0) {

            System.out.println("SunPKCS11-Solaris provider requires " +
                "Solaris SPARC 11.2 or later, skipping");
            return;
        }

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p);
        kpg.initialize(512);
        KeyPair kp = kpg.generateKeyPair();
        PrivateKey privateKey = kp.getPrivate();
        PublicKey publicKey = kp.getPublic();
        Signature sig = Signature.getInstance("MD5withRSA", p);
        byte[] data = new byte[10 * 1024];
        new Random().nextBytes(data);
        sig.initSign(privateKey);
        sig.initSign(privateKey);
        sig.update(data);
        sig.initSign(privateKey);
        sig.update(data);
        byte[] signature = sig.sign();
        sig.update(data);
        sig.initSign(privateKey);
        sig.update(data);
        sig.sign();
        sig.sign();
        sig.initSign(privateKey);
        sig.sign();

        System.out.println("All tests passed");
    }

}