/*

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 * 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 4898468 6994008

 * @summary basic test for RSA cipher

 * @author Andreas Sterbenz

 * @library ..

 * @key randomness

 * @run main/othervm TestRSACipher

 * @run main/othervm TestRSACipher sm

 */

import java.security.GeneralSecurityException;

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.PrivateKey;

import java.security.Provider;

import java.security.PublicKey;

import java.util.Arrays;

import java.util.Random;

import javax.crypto.BadPaddingException;

import javax.crypto.Cipher;

import javax.crypto.IllegalBlockSizeException;

public class TestRSACipher extends PKCS11Test {

    private static final String[] RSA_ALGOS =

        { "RSA/ECB/PKCS1Padding", "RSA" };

    @Override

    public void main(Provider p) throws Exception {

        try {

            Cipher.getInstance(RSA_ALGOS[0], p);

        } catch (GeneralSecurityException e) {

            System.out.println("Not supported by provider, skipping");

            return;

        }

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p);

        kpg.initialize(1024);

        KeyPair kp = kpg.generateKeyPair();

        PublicKey publicKey = kp.getPublic();

        PrivateKey privateKey = kp.getPrivate();

        Random random = new Random();

        byte[] b, e, d;

        b = new byte[16];

        random.nextBytes(b);

        for (String rsaAlgo: RSA_ALGOS) {

            Cipher c1 = Cipher.getInstance(rsaAlgo, p);

            Cipher c2 = Cipher.getInstance(rsaAlgo, "SunJCE");

            c1.init(Cipher.ENCRYPT_MODE, publicKey);

            e = c1.doFinal(b);

            c1.init(Cipher.DECRYPT_MODE, privateKey);

            d = c1.doFinal(e);

            match(b, d);

            c2.init(Cipher.DECRYPT_MODE, privateKey);

            d = c2.doFinal(e);

            match(b, d);

            // invalid data

            c1.init(Cipher.DECRYPT_MODE, publicKey);

            try {

                d = c1.doFinal(e);

                throw new Exception("completed call");

            } catch (BadPaddingException ee) {

                ee.printStackTrace();

            }

            c1.init(Cipher.ENCRYPT_MODE, privateKey);

            e = c1.doFinal(b);

            c1.init(Cipher.DECRYPT_MODE, publicKey);

            d = c1.doFinal(e);

            match(b, d);

            c2.init(Cipher.DECRYPT_MODE, publicKey);

            d = c2.doFinal(e);

            match(b, d);

            // reinit tests

            c1.init(Cipher.ENCRYPT_MODE, privateKey);

            c1.init(Cipher.ENCRYPT_MODE, privateKey);

            e = c1.doFinal(b);

            e = c1.doFinal(b);

            c1.update(b);

            c1.update(b);

            c1.init(Cipher.ENCRYPT_MODE, privateKey);

            e = c1.doFinal();

            e = c1.doFinal();

            c1.update(b);

            e = c1.doFinal();

            c1.update(new byte[256]);

            try {

                e = c1.doFinal();

                throw new Exception("completed call");

            } catch (IllegalBlockSizeException ee) {

                System.out.println(ee);

            }

        }

    }

    private static void match(byte[] b1, byte[] b2) throws Exception {

        if (Arrays.equals(b1, b2) == false) {

            System.out.println(toString(b1));

            System.out.println(toString(b2));

            throw new Exception("mismatch");

        }

    }

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

        main(new TestRSACipher(), args);

    }

}