/*

 * Copyright (c) 2011, 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 7031343

 * @summary Provide API changes to support GCM AEAD ciphers

 * @author Brad Wetmore

 */

import javax.crypto.*;

import javax.crypto.spec.*;

import java.nio.ByteBuffer;

/*

 * At this point in time, we can't really do any testing since only the API

 * is available, the underlying implementation doesn't exist yet.  Test

 * what we can...

 */

public class GCMAPI {

    // 16 elements

    private static byte[] bytes = new byte[] {

        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,

        0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };

    private static int failed = 0;

    private static Cipher c;

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

        c = Cipher.getInstance("AES");

        c.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(new byte[16], "AES"));

        updateAADFail((byte[]) null);

        updateAADPass(bytes);

        updateAADFail(null, 2, 4);

        updateAADFail(bytes, -2, 4);

        updateAADFail(bytes, 2, -4);

        updateAADFail(bytes, 2, 15);  // one too many

        updateAADPass(bytes, 2, 14);  // ok.

        updateAADPass(bytes, 4, 4);

        updateAADPass(bytes, 0, 0);

        ByteBuffer bb = ByteBuffer.wrap(bytes);

        updateAADFail((ByteBuffer) null);

        updateAADPass(bb);

        if (failed != 0) {

            throw new Exception("Test(s) failed");

        }

    }

    private static void updateAADPass(byte[] src) {

        try {

            c.updateAAD(src);

        } catch (UnsupportedOperationException e) {

            // swallow

        }catch (Exception e) {

            e.printStackTrace();

            failed++;

        }

    }

    private static void updateAADFail(byte[] src) {

        try {

            c.updateAAD(src);

            new Exception("Didn't Fail as Expected").printStackTrace();

            failed++;

        } catch (IllegalArgumentException e) {

            // swallow

        }

    }

    private static void updateAADPass(byte[] src, int offset, int len) {

        try {

            c.updateAAD(src, offset, len);

        } catch (UnsupportedOperationException e) {

            // swallow

        } catch (Exception e) {

            e.printStackTrace();

            failed++;

        }

    }

    private static void updateAADFail(byte[] src, int offset, int len) {

        try {

            c.updateAAD(src, offset, len);

            new Exception("Didn't Fail as Expected").printStackTrace();

            failed++;

        } catch (IllegalArgumentException e) {

            // swallow

        }

    }

    private static void updateAADPass(ByteBuffer src) {

        try {

            c.updateAAD(src);

        } catch (UnsupportedOperationException e) {

            // swallow

        }catch (Exception e) {

            e.printStackTrace();

            failed++;

        }

    }

    private static void updateAADFail(ByteBuffer src) {

        try {

            c.updateAAD(src);

            new Exception("Didn't Fail as Expected").printStackTrace();

            failed++;

        } catch (IllegalArgumentException e) {

            // swallow

        }

    }

}