Botan::WindowedMulTable< C, W > Class Template Reference

#include <pcurves_impl.h>

Public Types
typedef C::AffinePoint	AffinePoint
using	BlindedScalar = BlindedScalarBits<C, WindowBits>
typedef C::ProjectivePoint	ProjectivePoint
typedef C::Scalar	Scalar

Public Member Functions
ProjectivePoint	mul (const Scalar &s, RandomNumberGenerator &rng) const
	WindowedMulTable (const AffinePoint &p)

Static Public Attributes
static constexpr size_t	TableSize = (1 << WindowBits) - 1
static constexpr size_t	WindowBits = W
static constexpr size_t	Windows = (BlindedScalar::Bits + WindowBits - 1) / WindowBits

Detailed Description

template<typename C, size_t W>
class Botan::WindowedMulTable< C, W >

Precomputed point multiplication table

This is a standard fixed window multiplication using W-bit wide window.

Definition at line 1418 of file pcurves_impl.h.

Member Typedef Documentation

AffinePoint

template<typename C, size_t W>

typedef C::AffinePoint Botan::WindowedMulTable< C, W >::AffinePoint

Definition at line 1421 of file pcurves_impl.h.

BlindedScalar

template<typename C, size_t W>

using Botan::WindowedMulTable< C, W >::BlindedScalar = BlindedScalarBits<C, WindowBits>

Definition at line 1427 of file pcurves_impl.h.

ProjectivePoint

template<typename C, size_t W>

typedef C::ProjectivePoint Botan::WindowedMulTable< C, W >::ProjectivePoint

Definition at line 1422 of file pcurves_impl.h.

Scalar

template<typename C, size_t W>

typedef C::Scalar Botan::WindowedMulTable< C, W >::Scalar

Definition at line 1420 of file pcurves_impl.h.

Constructor & Destructor Documentation

WindowedMulTable()

template<typename C, size_t W>

Botan::WindowedMulTable< C, W >::WindowedMulTable ( const AffinePoint & p )

inlineexplicit

Definition at line 1436 of file pcurves_impl.h.

: m_table(varpoint_setup<C, TableSize>(p)) {}

References TableSize, and Botan::varpoint_setup().

Member Function Documentation

mul()

template<typename C, size_t W>

ProjectivePoint Botan::WindowedMulTable< C, W >::mul ( const Scalar & s, RandomNumberGenerator & rng ) const

inline

Definition at line 1438 of file pcurves_impl.h.

                                                                             {
         const BlindedScalar bits(s, rng);
         return varpoint_exec<C, WindowBits>(m_table, bits, rng);
      }

References Botan::varpoint_exec().

Member Data Documentation

TableSize

template<typename C, size_t W>

size_t Botan::WindowedMulTable< C, W >::TableSize = (1 << WindowBits) - 1

staticconstexpr

Definition at line 1434 of file pcurves_impl.h.

Referenced by WindowedMulTable().

WindowBits

template<typename C, size_t W>

size_t Botan::WindowedMulTable< C, W >::WindowBits = W

staticconstexpr

Definition at line 1424 of file pcurves_impl.h.

Windows

template<typename C, size_t W>

size_t Botan::WindowedMulTable< C, W >::Windows = (BlindedScalar::Bits + WindowBits - 1) / WindowBits

staticconstexpr

Definition at line 1429 of file pcurves_impl.h.

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The documentation for this class was generated from the following file:

• src/lib/math/pcurves/pcurves_impl/pcurves_impl.h