Java example source code file (TestRSAKeyLength.java)

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Java - Java tags/keywords

error, exception, expected, ike, invalidkeyexception, privatekey, runtimeexception, security, sha1withrsa, sha384withrsa, sha512withrsa, signature, string, testrsakeylength, unexpected

The TestRSAKeyLength.java Java example source code

/*
 * Copyright (c) 2010, 2013, 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 %W% %E%
 * @bug 6695485
 * @summary Make sure initSign/initVerify() check RSA key lengths
 * @author Yu-Ching Valerie Peng
 * @library ..
 */

import java.security.*;

public class TestRSAKeyLength extends PKCS11Test {
    public static void main(String[] args) throws Exception {
        main(new TestRSAKeyLength());
    }
    public void main(Provider p) throws Exception {
        boolean isValidKeyLength[] = { true, true, true, false, false };
        String algos[] = { "SHA1withRSA", "SHA224withRSA", "SHA256withRSA",
                           "SHA384withRSA", "SHA512withRSA" };
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p);
        kpg.initialize(512);
        KeyPair kp = kpg.generateKeyPair();
        PrivateKey privKey = kp.getPrivate();
        PublicKey pubKey = kp.getPublic();

        if (algos.length != isValidKeyLength.length) {
            throw new Exception("Internal Error: number of test algos" +
                " and results length mismatch!");
        }
        for (int i = 0; i < algos.length; i++) {
            Signature sig = Signature.getInstance(algos[i], p);
            System.out.println("Testing RSA signature " + algos[i]);
            try {
                sig.initSign(privKey);
                if (!isValidKeyLength[i]) {
                    throw new Exception("initSign: Expected IKE not thrown!");
                }
            } catch (InvalidKeyException ike) {
                if (isValidKeyLength[i]) {
                    throw new Exception("initSign: Unexpected " + ike);
                }
            }
            try {
                sig.initVerify(pubKey);
                if (!isValidKeyLength[i]) {
                    throw new RuntimeException("initVerify: Expected IKE not thrown!");
                }
                new SignedObject("Test string for getSignature test.", privKey, sig);
            } catch (InvalidKeyException ike) {
                if (isValidKeyLength[i]) {
                    throw new Exception("initSign: Unexpected " + ike);
                }
            }
        }
    }
}