DL_FixedBasePrecomputationImpl< T > Class Template Reference

DL_FixedBasePrecomputation adapter class. More...

#include <eprecomp.h>

Inheritance diagram for DL_FixedBasePrecomputationImpl< T >:

Public Types
typedef T	Element
Public Types inherited from DL_FixedBasePrecomputation< T >
typedef T	Element

Public Member Functions
bool	IsInitialized () const
	Determines whether this object is initialized.
void	SetBase (const DL_GroupPrecomputation< Element > &group, const Element &base)
	Set the base element.
const Element &	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.
Element	Exponentiate (const DL_GroupPrecomputation< Element > &group, const Integer &exponent) const
	Exponentiates an element.
Element	CascadeExponentiate (const DL_GroupPrecomputation< Element > &pc1, const Integer &exponent1, const DL_FixedBasePrecomputation< Element > &pc2, const Integer &exponent2) const
	Exponentiates an element.

Detailed Description

template<class T>
class DL_FixedBasePrecomputationImpl< T >

DL_FixedBasePrecomputation adapter class.

Template Parameters

T	Field element

Definition at line 126 of file eprecomp.h.

Member Typedef Documentation

Element

template<class T >

typedef T DL_FixedBasePrecomputationImpl< T >::Element

Definition at line 129 of file eprecomp.h.

Constructor & Destructor Documentation

~DL_FixedBasePrecomputationImpl()

template<class T >

virtual DL_FixedBasePrecomputationImpl< T >::~DL_FixedBasePrecomputationImpl ( )

inlinevirtual

Definition at line 131 of file eprecomp.h.

DL_FixedBasePrecomputationImpl()

template<class T >

DL_FixedBasePrecomputationImpl< T >::DL_FixedBasePrecomputationImpl ( )

inline

Definition at line 133 of file eprecomp.h.

Member Function Documentation

IsInitialized()

template<class T >

bool DL_FixedBasePrecomputationImpl< T >::IsInitialized ( ) const

inlinevirtual

Determines whether this object is initialized.

Returns

true if this object is initialized, false otherwise

Implements DL_FixedBasePrecomputation< T >.

Definition at line 136 of file eprecomp.h.

SetBase()

template<class T >

void DL_FixedBasePrecomputationImpl< T >::SetBase ( const DL_GroupPrecomputation< Element > &  group, const Element &  base  )

virtual

Set the base element.

Parameters

group	the group
base	element in the group

Implements DL_FixedBasePrecomputation< T >.

GetBase()

template<class T >

const Element & DL_FixedBasePrecomputationImpl< T >::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< T >.

Definition at line 139 of file eprecomp.h.

Precompute()

template<class T >

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

virtual

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< T >.

Load()

template<class T >

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

virtual

Retrieve previously saved precomputation.

Parameters

group	the group
storedPrecomputation	BufferedTransformation with the saved precomputation

Exceptions

NotImplemented

See also

SupportsPrecomputation(), Precompute()

Implements DL_FixedBasePrecomputation< T >.

Save()

template<class T >

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

virtual

Save precomputation for later use.

Parameters

group	the group
storedPrecomputation	BufferedTransformation to write the precomputation

Exceptions

NotImplemented

See also

SupportsPrecomputation(), Precompute()

Implements DL_FixedBasePrecomputation< T >.

Exponentiate()

template<class T >

Element DL_FixedBasePrecomputationImpl< T >::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< T >.

CascadeExponentiate()

template<class T >

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

virtual

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< T >.

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

• eprecomp.h