/*

 * 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.

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 */

/**

 * @test

 * @bug 4856966

 * @summary Test signing/verifying using all the signature algorithms

 * @author Andreas Sterbenz

 * @library ..

 */

import java.io.*;

import java.util.*;

import java.security.*;

import java.security.interfaces.*;

public class TestSignatures extends PKCS11Test {

    private final static String BASE = System.getProperty("test.src", ".");

    private static final char[] password = "test12".toCharArray();

    private static Provider provider;

    private static byte[] data;

    static KeyStore getKeyStore() throws Exception {

        InputStream in = new FileInputStream(new File(BASE, "rsakeys.ks"));

        KeyStore ks = KeyStore.getInstance("JKS");

        ks.load(in, password);

        in.close();

        return ks;

    }

    private static void testSignature(String algorithm, PrivateKey privateKey, PublicKey publicKey) throws Exception {

        System.out.println("Testing " + algorithm + "...");

        Signature s = Signature.getInstance(algorithm, provider);

        s.initSign(privateKey);

        s.update(data);

        byte[] sig = s.sign();

        s.initVerify(publicKey);

        s.update(data);

        boolean result;

        result = s.verify(sig);

        if (result == false) {

            throw new Exception("Verification 1 failed");

        }

        s.update(data);

        result = s.verify(sig);

        if (result == false) {

            throw new Exception("Verification 2 failed");

        }

        result = s.verify(sig);

        if (result == true) {

            throw new Exception("Verification 3 succeeded");

        }

    }

    private static void test(PrivateKey privateKey, PublicKey publicKey) throws Exception {

        testSignature("MD2withRSA", privateKey, publicKey);

        testSignature("MD5withRSA", privateKey, publicKey);

        testSignature("SHA1withRSA", privateKey, publicKey);

        testSignature("SHA256withRSA", privateKey, publicKey);

        RSAPublicKey rsaKey = (RSAPublicKey)publicKey;

        if (rsaKey.getModulus().bitLength() > 512) {

            // for SHA384 and SHA512 the data is too long for 512 bit keys

            testSignature("SHA384withRSA", privateKey, publicKey);

            testSignature("SHA512withRSA", privateKey, publicKey);

        }

    }

    public static void main(String[] args) throws Exception {

        main(new TestSignatures());

    }

    public void main(Provider p) throws Exception {

        long start = System.currentTimeMillis();

        provider = p;

        data = new byte[2048];

        new Random().nextBytes(data);

        KeyStore ks = getKeyStore();

        KeyFactory kf = KeyFactory.getInstance("RSA", provider);

        for (Enumeration e = ks.aliases(); e.hasMoreElements(); ) {

            String alias = (String)e.nextElement();

            if (ks.isKeyEntry(alias)) {

                System.out.println("* Key " + alias + "...");

                PrivateKey privateKey = (PrivateKey)ks.getKey(alias, password);

                PublicKey publicKey = ks.getCertificate(alias).getPublicKey();

                privateKey = (PrivateKey)kf.translateKey(privateKey);

                publicKey = (PublicKey)kf.translateKey(publicKey);

                test(privateKey, publicKey);

            }

        }

        long stop = System.currentTimeMillis();

        System.out.println("All tests passed (" + (stop - start) + " ms).");

    }

}