checksum.hpp

#ifndef CHECKSUM_HEADER
   #define CHECKSUM_HEADER

   #include <windows.h> 
   #include <vector>    
   
   #include "crcmodel.h" 

   #ifndef CRCCHECKSUMWIDTH
      #define CRCCHECKSUMWIDTH 16
   #endif

   #ifndef POLY
      #define POLY 0x1021
   #endif

   #ifndef INITREGISTER
      #define INITREGISTER 0xffff
   #endif

   #ifndef BREFLECTINPUT
      #define BREFLECTINPUT false
   #endif

   #ifndef BREFLECTOUTPUT
      #define BREFLECTOUTPUT false
   #endif

   #ifndef BXOROUT
      #define BXOROUT 0
   #endif


   typedef WORD CHECKSUM_TYPE;      

   class CChecksum
   {
      public:
         // Default constructor         
         CChecksum()
         {
            m_sData.cm_width= CRCCHECKSUMWIDTH;
            m_sData.cm_poly=  POLY;
            m_sData.cm_init=  INITREGISTER;
            m_sData.cm_refin= BREFLECTINPUT;
            m_sData.cm_refot= BREFLECTOUTPUT;
            m_sData.cm_xorot= BXOROUT;
            m_sData.cm_reg=   INITREGISTER;
         }

         virtual ~CChecksum() {};

         // CalcCheckSum
         CHECKSUM_TYPE CalcCheckSum( const std::vector<unsigned char>& block );

      protected:
      private:
         cm_t m_sData;         
   };

#endif

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