71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
/* -*- C++ -*- */
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/*
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* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __CRYPTOENGINE_H__
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#define __CRYPTOENGINE_H__
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#include "des.h"
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//#include "KClient.h"
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typedef unsigned char UChar, *pUChar;
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class CryptoEngine{
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public:
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long lastLength;
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pUChar lastIn;
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int mLastIVDecCount;
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des_cblock mLastDecInitVec;
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void UndoDecrypt(pUChar out, long length);
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CryptoEngine(des_cblock* key);
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~CryptoEngine();
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void Encrypt(pUChar in, pUChar out, long length);
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void Decrypt(pUChar in, pUChar out, long length);
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void RandData(pUChar buff, int length);
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private:
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void cryptation(pUChar in, pUChar out, long length, int encrypt);
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int mIVEncCount;
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int mIVDecCount;
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des_cblock mSessionKey;
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des_cblock mEncInitVec; // The send ivec
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des_cblock mDecInitVec; // The recieved ivec
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des_key_schedule mDesSchedule;
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friend class EncryptOption;
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};
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#endif /* __CRYPTOENGINE_H__ */
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