/*

 * Copyright (c) 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.

 *

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/**

 * @test

 * @bug 8151149

 * @modules java.base/com.sun.crypto.provider

 */

import java.lang.reflect.*;

import java.security.*;

import javax.crypto.*;

import javax.crypto.spec.*;

import com.sun.crypto.provider.*;

public class CheckPBEKeySize {

    private static final String ALGO = "PBEWithSHA1AndDESede";

    private static final int KEYSIZE = 112; // Triple DES effective key size

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

        // Generate a PBE key

        SecretKeyFactory skFac = SecretKeyFactory.getInstance("PBE");

        SecretKey skey =

            skFac.generateSecret(new PBEKeySpec("test123".toCharArray()));

        // Initialize the PBE cipher

        Cipher cipher = Cipher.getInstance(ALGO);

        cipher.init(Cipher.ENCRYPT_MODE, skey);

        // Permit access to the Cipher.spi field (a CipherSpi object)

        Field spi = Cipher.class.getDeclaredField("spi");

        spi.setAccessible(true);

        Object value = spi.get(cipher);

        // Permit access to the CipherSpi.engineGetKeySize method

        Method engineGetKeySize =

            PKCS12PBECipherCore$PBEWithSHA1AndDESede.class

                .getDeclaredMethod("engineGetKeySize", Key.class);

        engineGetKeySize.setAccessible(true);

        // Check the key size

        int keySize = (int) engineGetKeySize.invoke(value, skey);

        if (keySize == KEYSIZE) {

            System.out.println(ALGO + ".engineGetKeySize returns " + keySize +

                " bits, as expected");

            System.out.println("OK");

        } else {

            throw new Exception("ERROR: " + ALGO + " key size is incorrect");

        }

    }

}