#include <ec_inner_bn.h>

Inheritance diagram for Botan::EC_Mul2Table_Data_BN:

Public Member Functions
	EC_Mul2Table_Data_BN (const EC_AffinePoint_Data &g, const EC_AffinePoint_Data &h)

std::unique_ptr< EC_AffinePoint_Data >	mul2_vartime (const EC_Scalar_Data &x, const EC_Scalar_Data &y) const override

bool	mul2_vartime_x_mod_order_eq (const EC_Scalar_Data &v, const EC_Scalar_Data &x, const EC_Scalar_Data &y) const override

Detailed Description

Definition at line 91 of file ec_inner_bn.h.

Constructor & Destructor Documentation

◆ EC_Mul2Table_Data_BN()

Botan::EC_Mul2Table_Data_BN::EC_Mul2Table_Data_BN	(	const EC_AffinePoint_Data &	g,
		const EC_AffinePoint_Data &	h )

Definition at line 181 of file ec_inner_bn.cpp.

                                                                                                     :
      m_group(g.group()), m_tbl(g.to_legacy_point(), h.to_legacy_point()) {
   BOTAN_ARG_CHECK(h.group() == m_group, "Curve mismatch");
}

References BOTAN_ARG_CHECK, and Botan::EC_AffinePoint_Data::group().

Member Function Documentation

◆ mul2_vartime()

std::unique_ptr< EC_AffinePoint_Data > Botan::EC_Mul2Table_Data_BN::mul2_vartime	(	const EC_Scalar_Data &	x,
		const EC_Scalar_Data &	y ) const

overridevirtual

Implements Botan::EC_Mul2Table_Data.

Definition at line 186 of file ec_inner_bn.cpp.

                                                                                                       {
   BOTAN_ARG_CHECK(x.group() == m_group && y.group() == m_group, "Curve mismatch");
 
   const auto& bn_x = EC_Scalar_Data_BN::checked_ref(x);
   const auto& bn_y = EC_Scalar_Data_BN::checked_ref(y);
   auto pt = m_tbl.multi_exp(bn_x.value(), bn_y.value());
 
   if(pt.is_zero()) {
      return nullptr;
   }
   return std::make_unique<EC_AffinePoint_Data_BN>(m_group, std::move(pt));
}

References BOTAN_ARG_CHECK, Botan::EC_Scalar_Data_BN::checked_ref(), and Botan::EC_Scalar_Data::group().

◆ mul2_vartime_x_mod_order_eq()

bool Botan::EC_Mul2Table_Data_BN::mul2_vartime_x_mod_order_eq	(	const EC_Scalar_Data &	v,
		const EC_Scalar_Data &	x,
		const EC_Scalar_Data &	y ) const