/**
 * This file is part of the dcrypt project.
 *
 * Copyright: Copyright (C) dcrypt contributors 2008. All rights reserved.
 * License:   MIT
 * Authors:   Thomas Dixon
 */

module dcrypt.crypto.SymmetricCipher;

import dcrypt.crypto.Cipher;
import dcrypt.crypto.params.CipherParameters;

/** Unified cipher class for high-level API. */
interface SymmetricCipher : Cipher {
    /** 
     * Pass bytes through the cipher object.
     * 
     * Params:
     *     input_  = Array containing input data.
     *     inOff   = Offset at where the data in input_ starts.
     *     len     = Length of input_ to process.
     *     output_ = Array which will hold the output data.
     *     outOff  = Offset at which to begin placing data in output_.
     *
     * Returns: The amount of bytes processed.
     */
    uint update(void[] input_, uint inOff, uint len, void[] output_, uint outOff);
    
    /** Finalize and output the rest of the buffer. */
    uint finish(void[] output_, uint outOff);
}