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/*************************************************
* CMAC Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_CMAC_H__
#define BOTAN_CMAC_H__
#include <botan/base.h>
namespace Botan {
/*************************************************
* CMAC *
*************************************************/
class BOTAN_DLL CMAC : public MessageAuthenticationCode
{
public:
void clear() throw();
std::string name() const;
MessageAuthenticationCode* clone() const;
static SecureVector<byte> poly_double(const MemoryRegion<byte>& in,
byte polynomial);
CMAC(const std::string&);
~CMAC() { delete e; }
private:
void add_data(const byte[], u32bit);
void final_result(byte[]);
void key(const byte[], u32bit);
BlockCipher* e;
SecureVector<byte> buffer, state, B, P;
u32bit position;
byte polynomial;
};
}
#endif
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