/**
 * 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.params.ParametersWithIV;

public import dcrypt.crypto.params.CipherParameters;

/** Wrap cipher parameters and IV. */
class ParametersWithIV : CipherParameters {
    private ubyte[] m_iv;
    private CipherParameters m_params;
    
    /**
     * Params:
     *     params = Parameters to wrap.
     *     iv     = IV to be held.
     */
    this (CipherParameters params=null, ubyte[] iv_=null) {
        if (params)
            m_params = params;
        ubyte[] iv = cast(ubyte[]) iv_;
        if (iv)
            m_iv = iv;
    }
    
    /** Returns: The IV. */
    ubyte[] iv() {
        return m_iv;
    }
    
    /**
     * Set the IV held by this object.
     *
     * Params:
     *     newIV = The new IV for this parameter object.
     * Returns: The new IV.
     */
    ubyte[] iv(void[] newIV_) {
        ubyte[] newIV = cast(ubyte[]) newIV_;
        return m_iv = newIV;
    }
    
    /** Returns: The parameters for this object. */
    CipherParameters parameters() {
        return m_params;
    }
    
    /**
     * Set the parameters held by this object.
     *
     * Params:
     *     newParams = The new parameters to be held.
     * Returns: The new parameters.
     */
    CipherParameters parameters(CipherParameters newParams) {
        return m_params = newParams;
    }
}