85 lines
3.7 KiB
C++
85 lines
3.7 KiB
C++
//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: /CounterStrike/BLWSTRAW.H 1 3/03/97 10:24a Joe_bostic $ */
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : BLWSTRAW.H *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : 07/02/96 *
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* *
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* Last Update : July 2, 1996 [JLB] *
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef BLWSTRAW_H
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#define BLWSTRAW_H
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#include "straw.h"
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#include "blowfish.h"
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/*
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** Performs Blowfish encryption/decryption to the data that is drawn through this straw. The
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** process is controlled by the key which must be submitted to the class before any data
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** manipulation will occur. The Blowfish algorithm is symmetric, thus the same key is used
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** for encryption as is for decryption.
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*/
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class BlowStraw : public Straw
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{
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public:
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typedef enum CryptControl {
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ENCRYPT,
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DECRYPT
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} CryptControl;
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BlowStraw(CryptControl control) : BF(NULL), Counter(0), Control(control) {}
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virtual ~BlowStraw(void) {delete BF;BF = NULL;}
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virtual int Get(void * source, int slen);
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// Submit key for blowfish engine.
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void Key(void const * key, int length);
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protected:
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/*
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** The Blowfish engine used for encryption/decryption. If this pointer is
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** NULL, then this indicates that the blowfish engine is not active and no
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** key has been submitted. All data would pass through this straw unchanged
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** in that case.
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*/
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BlowfishEngine * BF;
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private:
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char Buffer[8];
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int Counter;
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CryptControl Control;
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BlowStraw(BlowStraw & rvalue);
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BlowStraw & operator = (BlowStraw const & straw);
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};
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#endif
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