/*

 * Copyright (c) 2001, 2015, 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 8048604

 * @summary This test checks boundary conditions for testing

 *          ShortBufferException.

 */

import static java.lang.System.out;

import java.security.AlgorithmParameters;

import java.security.Provider;

import java.security.Security;

import javax.crypto.BadPaddingException;

import javax.crypto.Cipher;

import javax.crypto.KeyGenerator;

import javax.crypto.SecretKey;

public class TextPKCS5PaddingTest {

    /**

     * Test plain text.

     */

    private static final byte[] PLAIN_TEXT = {

        0b10001, 0b10001, 0b10001, 0b10001,

        0b10001, 0b10001, 0b11,    0b11

    };

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

        Provider provider = Security.getProvider("SunJCE");

        if (provider == null) {

            throw new RuntimeException("SunJCE provider not exist");

        }

        // generate no-padding cipher with secret key

        Cipher c = Cipher.getInstance("DES/CBC/NoPadding", provider);

        KeyGenerator kgen = KeyGenerator.getInstance("DES", provider);

        SecretKey skey = kgen.generateKey();

        // this is the improperly padded plaintext

        c.init(Cipher.ENCRYPT_MODE, skey);

        // encrypt plaintext

        byte[] cipher = c.doFinal(PLAIN_TEXT);

        AlgorithmParameters params = c.getParameters();

        // generate cipher that enforces PKCS5 padding

        c = Cipher.getInstance("DES/CBC/PKCS5Padding", provider);

        c.init(Cipher.DECRYPT_MODE, skey, params);

        try {

            c.doFinal(cipher);

            throw new RuntimeException(

                    "ERROR: Expected BadPaddingException not thrown");

        } catch (BadPaddingException expected) {

            out.println("Expected BadPaddingException thrown");

        }

    }

}