//
// Cryptographer.java - An abstract class for cryptograpy algorithms.
//
// Copyright (C) 1996-97 by Connect Software, Inc. All rights reserved.
//
// Designed and written by Gionata Mettifogo.
//
// This class does not implement cryptography algorithms and is not subject to export restrictions.
//

package connect.cryptography;                               // belongs to the cryptography package

public class Cryptographer
{
    public Cryptographer()
    {

    }

    public int getBlockLength()
    {
        return -1;                                          // no fixed length for the block (this is true with all stream cyphers)
    }

    public void encrypt(byte [] data, int offset, int length)
    {
                                                            // no encryption in base class (will be overidden)
    }

    public void encrypt(byte [] data)
    {
        encrypt(data, 0, data.length);                      // ecnrypt entire array at once
    }

    public void decrypt(byte [] data, int offset, int length)
    {
        encrypt(data, offset, length);                      // this works if algorithm is symmetric
    }

    public void decrypt(byte [] data)
    {
        decrypt(data, 0, data.length);                      // decrypt entire array at once
    }
}