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/*************************************************
* Modular Reducer Header File *
* (C) 1999-2007 The Botan Project *
*************************************************/
#ifndef BOTAN_MODARITH_H__
#define BOTAN_MODARITH_H__
#include <botan/bigint.h>
namespace Botan {
/*************************************************
* Modular Reducer *
*************************************************/
class Modular_Reducer
{
public:
BigInt multiply(const BigInt&, const BigInt&) const;
BigInt square(const BigInt&) const;
BigInt reduce(const BigInt&) const;
bool initialized() const { return (mod_words != 0); }
Modular_Reducer() { mod_words = 0; }
Modular_Reducer(const BigInt&);
private:
BigInt modulus, modulus_2, mu;
u32bit mod_words, mod2_words, mu_words;
};
}
#endif
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