cCipherRotary.h

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//
//
 
#ifndef _INC_cCipherRotary_H
#define _INC_cCipherRotary_H
#ifndef NO_PRAGMA_ONCE
#pragma once
#endif
 
#include "cCipherBase.h"
#include "GrayCore/include/cTypes.h"
 
namespace GrayLib
{
        class GRAYLIB_LINK cCipherRotary : public cCipherBase
        {
        private:
                UINT32 m_dwVersion;             
                cUnion64 m_Master;              
                cUnion64 m_Current;             
 
        private:
                void Rotary1(BYTE* pOutput, const BYTE* pInput, size_t nLen);
                void Rotary2(BYTE* pOutput, const BYTE* pInput, size_t nLen);
                void Rotary3(BYTE* pOutput, const BYTE* pInput, size_t nLen);
 
        protected:
                bool isMasterKeySet() const
                {
                        return(m_Master.u_dw[0] && m_Master.u_dw[1]);
                }
 
                bool InitCryptMasterKey(UINT32 dwVersion, UINT32 dwKeyHi, UINT32 dwKeyLo);
                HRESULT put_CipherKey(UINT32 uSeed);
 
        public:
                cCipherRotary(bool bEncodeMode = true);
                virtual ~cCipherRotary();
 
                // cCipherBase
                virtual HRESULT SetCipherKey(const void* pKeyData = nullptr, size_t nKeySize = 0) override;
                virtual HRESULT Cipher(BYTE* pOutput, const BYTE* pInput, size_t nSizeBytes) override;
 
                UNITTEST_FRIEND(cCipherRotary);
        };
};
#endif // _INC_CCRYPTROTARY_H