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/*
* Blinding for public key operations
* (C) 1999-2010 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_BLINDER_H__
#define BOTAN_BLINDER_H__
#include <botan/bigint.h>
#include <botan/reducer.h>
#include <functional>
namespace Botan {
/**
* Blinding Function Object
*/
class BOTAN_DLL Blinder
{
public:
BigInt blind(const BigInt& x) const;
BigInt unblind(const BigInt& x) const;
bool initialized() const { return m_reducer.initialized(); }
Blinder() {}
Blinder(const BigInt& modulus,
std::function<BigInt (const BigInt&)> fwd_func,
std::function<BigInt (const BigInt&)> inv_func);
private:
Modular_Reducer m_reducer;
mutable BigInt m_e, m_d;
};
}
#endif
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