LUC Precomputation. More...

#include <luc.h>

Inheritance diagram for DL_BasePrecomputation_LUC:

Public Member Functions
bool	IsInitialized () const
	Determines whether this object is initialized.

void	SetBase (const DL_GroupPrecomputation< Element > &group, const Integer &base)
	Set the base element.

const Integer &	GetBase (const DL_GroupPrecomputation< Element > &group) const
	Get the base element.

void	Precompute (const DL_GroupPrecomputation< Element > &group, unsigned int maxExpBits, unsigned int storage)
	Perform precomputation.

void	Load (const DL_GroupPrecomputation< Element > &group, BufferedTransformation &storedPrecomputation)
	Retrieve previously saved precomputation.

void	Save (const DL_GroupPrecomputation< Element > &group, BufferedTransformation &storedPrecomputation) const
	Save precomputation for later use.

Integer	Exponentiate (const DL_GroupPrecomputation< Element > &group, const Integer &exponent) const
	Exponentiates an element.

Integer	CascadeExponentiate (const DL_GroupPrecomputation< Element > &group, const Integer &exponent, const DL_FixedBasePrecomputation< Integer > &pc2, const Integer &exponent2) const
	Exponentiates an element.

Additional Inherited Members
Public Types inherited from DL_FixedBasePrecomputation< Integer >
typedef Integer	Element

Detailed Description

LUC Precomputation.

Since: Crypto++ 2.1

Definition at line 192 of file luc.h.

Constructor & Destructor Documentation

◆ ~DL_BasePrecomputation_LUC()

virtual DL_BasePrecomputation_LUC::~DL_BasePrecomputation_LUC ( )

inlinevirtual

Definition at line 195 of file luc.h.

Member Function Documentation

◆ IsInitialized()

bool DL_BasePrecomputation_LUC::IsInitialized ( ) const

inlinevirtual

Determines whether this object is initialized.

Returns: true if this object is initialized, false otherwise

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 198 of file luc.h.

◆ SetBase()

void DL_BasePrecomputation_LUC::SetBase	(	const DL_GroupPrecomputation< Element > &	group,
		const Integer &	base
	)

inlinevirtual

Set the base element.

Parameters

group	the group
base	element in the group

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 199 of file luc.h.

◆ GetBase()

const Integer & DL_BasePrecomputation_LUC::GetBase ( const DL_GroupPrecomputation< Element > & group ) const

inlinevirtual

Get the base element.

Parameters

group the group

Returns: base element in the group

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 201 of file luc.h.

◆ Precompute()

void DL_BasePrecomputation_LUC::Precompute	(	const DL_GroupPrecomputation< Element > &	group,
		unsigned int	maxExpBits,
		unsigned int	storage
	)

inlinevirtual

Perform precomputation.

Parameters

group	the group
maxExpBits	used to calculate the exponent base
storage	the suggested number of objects for the precompute table

The exact semantics of Precompute() varies, but it typically means calculate a table of n objects that can be used later to speed up computation.

If a derived class does not override Precompute(), then the base class throws NotImplemented.

See also: SupportsPrecomputation(), LoadPrecomputation(), SavePrecomputation()

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 203 of file luc.h.

◆ Load()

void DL_BasePrecomputation_LUC::Load	(	const DL_GroupPrecomputation< Element > &	group,
		BufferedTransformation &	storedPrecomputation
	)

inlinevirtual

Retrieve previously saved precomputation.

Parameters

group	the group
storedPrecomputation	BufferedTransformation with the saved precomputation

Exceptions

NotImplemented

See also: SupportsPrecomputation(), Precompute()

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 205 of file luc.h.

◆ Save()

void DL_BasePrecomputation_LUC::Save	(	const DL_GroupPrecomputation< Element > &	group,
		BufferedTransformation &	storedPrecomputation
	)		const

inlinevirtual

Save precomputation for later use.

Parameters

group	the group
storedPrecomputation	BufferedTransformation to write the precomputation

Exceptions

NotImplemented

See also: SupportsPrecomputation(), Precompute()

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 207 of file luc.h.

◆ Exponentiate()

Integer DL_BasePrecomputation_LUC::Exponentiate	(	const DL_GroupPrecomputation< Element > &	group,
		const Integer &	exponent
	)		const

virtual

Exponentiates an element.

Parameters

group	the group
exponent	the exponent

Returns: the result of the exponentiation

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 40 of file luc.cpp.

◆ CascadeExponentiate()

Integer DL_BasePrecomputation_LUC::CascadeExponentiate	(	const DL_GroupPrecomputation< Element > &	pc1,
		const Integer &	exponent1,
		const DL_FixedBasePrecomputation< Integer > &	pc2,
		const Integer &	exponent2
	)		const

inlinevirtual

Exponentiates an element.

Parameters

pc1	the first the group precomputation
exponent1	the first exponent
pc2	the second the group precomputation
exponent2	the first exponent2

Returns: the public element raised to the exponent

CascadeExponentiateBaseAndPublicElement raises the public element to the base element and precomputation.

Implements DL_FixedBasePrecomputation< Integer >.

Definition at line 210 of file luc.h.

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~DL_BasePrecomputation_LUC()

Member Function Documentation

◆ IsInitialized()

◆ SetBase()

◆ GetBase()

◆ Precompute()

◆ Load()

◆ Save()

◆ Exponentiate()

◆ CascadeExponentiate()