crc32.h

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/*
* CRC32
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#ifndef BOTAN_CRC32_H__
#define BOTAN_CRC32_H__
 
#include <botan/hash.h>
 
namespace Botan {
 
/**
* 32-bit cyclic redundancy check
*/
class BOTAN_DLL CRC32 : public HashFunction
   {
   public:
      std::string name() const { return "CRC32"; }
      size_t output_length() const { return 4; }
      HashFunction* clone() const { return new CRC32; }
 
      void clear() { crc = 0xFFFFFFFF; }
 
      CRC32() { clear(); }
      ~CRC32() { clear(); }
   private:
      void add_data(const byte[], size_t);
      void final_result(byte[]);
      u32bit crc;
   };
 
}
 
#endif