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products/Sources/formale Sprachen/Java/Openjdk/test/jdk/java/security/Signature/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 2 kB

Quelle NONEwithRSA.java Sprache: JAVA

/*
* Copyright (c) 2003, 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 4955844
* @summary ensure that the NONEwithRSA adapter works correctly
* @author Andreas Sterbenz
* @key randomness
*/

import java.util.*;

import java.security.*;

import javax.crypto.*;

public class NONEwithRSA {

    public static void main(String[] args) throws Exception {
//      showProvider(Security.getProvider("SUN"));
        Random random = new Random();
        byte[] b = new byte[16];
        random.nextBytes(b);

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        kpg.initialize(512);
        KeyPair kp = kpg.generateKeyPair();

        Signature sig = Signature.getInstance("NONEwithRSA");
        sig.initSign(kp.getPrivate());
        System.out.println("Provider: " + sig.getProvider());
        sig.update(b);
        byte[] sb = sig.sign();

        sig.initVerify(kp.getPublic());
        sig.update(b);
        if (sig.verify(sb) == false) {
            throw new Exception("verification failed");
        }

        Cipher c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        c.init(Cipher.DECRYPT_MODE, kp.getPublic());
        byte[] dec = c.doFinal(sb);
        if (Arrays.equals(dec, b) == false) {
            throw new Exception("decryption failed");
        }

        sig = Signature.getInstance("NONEwithRSA", "SunJCE");
        sig.initSign(kp.getPrivate());
        sig = Signature.getInstance("NONEwithRSA", Security.getProvider("SunJCE"));
        sig.initSign(kp.getPrivate());

        try {
            Signature.getInstance("NONEwithRSA", "SUN");
            throw new Exception("call succeeded");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }

        System.out.println("OK");
    }

    private static void showProvider(Provider p) {
        System.out.println(p);
        for (Iterator t = p.getServices().iterator(); t.hasNext(); ) {
            System.out.println(t.next());
        }
    }

}

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