LUC GroupParameters specialization. More...

#include <luc.h>

Inheritance diagram for DL_GroupParameters_LUC:

Collaboration diagram for DL_GroupParameters_LUC:

Public Member Functions
virtual	~DL_GroupParameters_LUC ()

bool	IsIdentity (const Integer &element) const
	Determines if an element is an identity. More...

void	SimultaneousExponentiate (Element results, const Element &base, const Integer exponents, unsigned int exponentsCount) const
	Exponentiates a base to multiple exponents. More...

Element	MultiplyElements (const Element &a, const Element &b) const

Element	CascadeExponentiate (const Element &element1, const Integer &exponent1, const Element &element2, const Integer &exponent2) const

bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const
	Get a named value. More...

Public Member Functions inherited from DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC >
virtual	~DL_GroupParameters_IntegerBasedImpl ()

bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const
	Get a named value. More...

void	AssignFrom (const NameValuePairs &source)
	Assign values to this object. More...

const DL_FixedBasePrecomputation< Element > &	GetBasePrecomputation () const
	Retrieves the group precomputation. More...

DL_FixedBasePrecomputation< Element > &	AccessBasePrecomputation ()
	Retrieves the group precomputation. More...

const Integer &	GetModulus () const

const Integer &	GetGenerator () const

void	SetModulusAndSubgroupGenerator (const Integer &p, const Integer &g)

bool	operator== (const DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC > &rhs) const

bool	operator!= (const DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC > &rhs) const

Public Member Functions inherited from DL_GroupParametersImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC, DL_GroupParameters_IntegerBased >
virtual	~DL_GroupParametersImpl ()

const DL_GroupPrecomputation< Element > &	GetGroupPrecomputation () const
	Retrieves the group precomputation. More...

const DL_FixedBasePrecomputation< Element > &	GetBasePrecomputation () const
	Retrieves the group precomputation. More...

DL_FixedBasePrecomputation< Element > &	AccessBasePrecomputation ()
	Retrieves the group precomputation. More...

Public Member Functions inherited from DL_GroupParameters_IntegerBased
virtual	~DL_GroupParameters_IntegerBased ()

void	Initialize (const DL_GroupParameters_IntegerBased &params)
	Initialize a group parameters over integers. More...

void	Initialize (RandomNumberGenerator &rng, unsigned int pbits)
	Create a group parameters over integers. More...

void	Initialize (const Integer &p, const Integer &g)
	Initialize a group parameters over integers. More...

void	Initialize (const Integer &p, const Integer &q, const Integer &g)
	Initialize a group parameters over integers. More...

void	BERDecode (BufferedTransformation &bt)
	Decode this object from a BufferedTransformation. More...

void	DEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation. More...

void	GenerateRandom (RandomNumberGenerator &rng, const NameValuePairs &alg)

const Integer &	GetSubgroupOrder () const
	Retrieves the subgroup order. More...

Integer	GetGroupOrder () const
	Retrieves the order of the group. More...

bool	ValidateGroup (RandomNumberGenerator &rng, unsigned int level) const
	Check the group for errors. More...

bool	ValidateElement (unsigned int level, const Integer &element, const DL_FixedBasePrecomputation< Integer > *precomp) const
	Check the element for errors. More...

bool	FastSubgroupCheckAvailable () const

void	EncodeElement (bool reversible, const Element &element, byte *encoded) const
	Encodes the element. More...

unsigned int	GetEncodedElementSize (bool reversible) const
	Retrieves the encoded element's size. More...

Integer	DecodeElement (const byte *encoded, bool checkForGroupMembership) const
	Decodes the element. More...

Integer	ConvertElementToInteger (const Element &element) const
	Converts an element to an Integer. More...

Integer	GetMaxExponent () const
	Retrieves the maximum exponent for the group. More...

OID	GetAlgorithmID () const

void	SetSubgroupOrder (const Integer &q)

Public Member Functions inherited from ASN1CryptoMaterial< DL_GroupParameters< Integer > >
void	Save (BufferedTransformation &bt) const
	DER encode ASN.1 object. More...

void	Load (BufferedTransformation &bt)
	BER decode ASN.1 object. More...

Public Member Functions inherited from ASN1Object
virtual	~ASN1Object ()

virtual void	BEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation. More...

Public Member Functions inherited from DL_GroupParameters< Integer >
virtual	~DL_GroupParameters ()

	DL_GroupParameters ()

bool	Validate (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors. More...

bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const
	Get a named value. More...

bool	SupportsPrecomputation () const
	Determines whether the object supports precomputation. More...

void	Precompute (unsigned int precomputationStorage=16)
	Perform precomputation. More...

void	LoadPrecomputation (BufferedTransformation &storedPrecomputation)
	Retrieve previously saved precomputation. More...

void	SavePrecomputation (BufferedTransformation &storedPrecomputation) const
	Save precomputation for later use. More...

virtual const Element &	GetSubgroupGenerator () const
	Retrieves the subgroup generator. More...

virtual void	SetSubgroupGenerator (const Element &base)
	Set the subgroup generator. More...

virtual Element	ExponentiateBase (const Integer &exponent) const
	Retrieves the subgroup generator. More...

virtual Element	ExponentiateElement (const Element &base, const Integer &exponent) const
	Exponentiates an element. More...

virtual Integer	GetCofactor () const
	Retrieves the cofactor. More...

Public Member Functions inherited from GeneratableCryptoMaterial
virtual	~GeneratableCryptoMaterial ()

void	GenerateRandomWithKeySize (RandomNumberGenerator &rng, unsigned int keySize)
	Generate a random key or crypto parameters. More...

Public Member Functions inherited from CryptoMaterial
virtual	~CryptoMaterial ()

virtual void	ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors. More...

void	DoQuickSanityCheck () const
	Perform a quick sanity check. More...

Public Member Functions inherited from NameValuePairs
virtual	~NameValuePairs ()

template<class T >
bool	GetThisObject (T &object) const
	Get a copy of this object or subobject. More...

template<class T >
bool	GetThisPointer (T *&ptr) const
	Get a pointer to this object. More...

template<class T >
bool	GetValue (const char *name, T &value) const
	Get a named value. More...

template<class T >
T	GetValueWithDefault (const char *name, T defaultValue) const
	Get a named value. More...

CRYPTOPP_DLL std::string	GetValueNames () const
	Get a list of value names that can be retrieved. More...

CRYPTOPP_DLL bool	GetIntValue (const char *name, int &value) const
	Get a named value with type int. More...

CRYPTOPP_DLL int	GetIntValueWithDefault (const char *name, int defaultValue) const
	Get a named value with type int, with default. More...

template<class T >
void	GetRequiredParameter (const char className, const char name, T &value) const
	Retrieves a required name/value pair. More...

CRYPTOPP_DLL void	GetRequiredIntParameter (const char className, const char name, int &value) const
	Retrieves a required name/value pair. More...

Private Member Functions
int	GetFieldType () const

Additional Inherited Members
Public Types inherited from DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC >
typedef DL_GroupPrecomputation_LUC::Element	Element

Public Types inherited from DL_GroupParametersImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC, DL_GroupParameters_IntegerBased >
typedef DL_GroupPrecomputation_LUC	GroupPrecomputation

typedef DL_GroupPrecomputation_LUC::Element	Element

typedef DL_BasePrecomputation_LUC	BasePrecomputation

Public Types inherited from DL_GroupParameters< Integer >
typedef Integer	Element

Static Public Member Functions inherited from DL_GroupParameters_IntegerBased
static std::string CRYPTOPP_API	StaticAlgorithmNamePrefix ()

Static Public Member Functions inherited from NameValuePairs
static CRYPTOPP_DLL void CRYPTOPP_API	ThrowIfTypeMismatch (const char *name, const std::type_info &stored, const std::type_info &retrieving)
	Ensures an expected name and type is present. More...

Protected Member Functions inherited from DL_GroupParameters_IntegerBased
Integer	ComputeGroupOrder (const Integer &modulus) const

virtual unsigned int	GetDefaultSubgroupOrderSize (unsigned int modulusSize) const

Protected Member Functions inherited from DL_GroupParameters< Integer >
void	ParametersChanged ()

Protected Attributes inherited from DL_GroupParametersImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC, DL_GroupParameters_IntegerBased >
DL_GroupPrecomputation_LUC	m_groupPrecomputation

DL_BasePrecomputation_LUC	m_gpc

Detailed Description

LUC GroupParameters specialization.

Definition at line 213 of file luc.h.

Constructor & Destructor Documentation

virtual DL_GroupParameters_LUC::~DL_GroupParameters_LUC ( )

inlinevirtual

Definition at line 216 of file luc.h.

Member Function Documentation

Element DL_GroupParameters_LUC::CascadeExponentiate	(	const Element &	element1,
		const Integer &	exponent1,
		const Element &	element2,
		const Integer &	exponent2
	)		const

inline

Definition at line 226 of file luc.h.

int DL_GroupParameters_LUC::GetFieldType ( ) const

inlineprivatevirtual

Implements DL_GroupParameters_IntegerBased.

Definition at line 239 of file luc.h.

bool DL_GroupParameters_LUC::GetVoidValue	(	const char *	name,
		const std::type_info &	valueType,
		void *	pValue
	)		const

inlinevirtual

Get a named value.

Parameters

name	the name of the object or value to retrieve
valueType	reference to a variable that receives the value
pValue	void pointer to a variable that receives the value

Returns: true if the value was retrieved, false otherwise

GetVoidValue() retrieves the value of name if it exists.

Note: GetVoidValue() is an internal function and should be implemented by derived classes. Users should use one of the other functions instead.

See also: GetValue(), GetValueWithDefault(), GetIntValue(), GetIntValueWithDefault(), GetRequiredParameter() and GetRequiredIntParameter()

Reimplemented from DL_GroupParameters_IntegerBased.

Definition at line 233 of file luc.h.

bool DL_GroupParameters_LUC::IsIdentity ( const Integer & element ) const

inlinevirtual

Determines if an element is an identity.

Parameters

element element to check

Returns: true if the element is an identity, false otherwise

The identity element or or neutral element is a special element in a group that leaves other elements unchanged when combined with it.

IsIdentity() must be implemented in a derived class.

Implements DL_GroupParameters< Integer >.

Definition at line 219 of file luc.h.

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Element DL_GroupParameters_LUC::MultiplyElements	(	const Element &	a,
		const Element &	b
	)		const

inline

Definition at line 221 of file luc.h.

void DL_GroupParameters_LUC::SimultaneousExponentiate	(	Element *	results,
		const Element &	base,
		const Integer *	exponents,
		unsigned int	exponentsCount
	)		const

virtual

Exponentiates a base to multiple exponents.

Parameters

results	an array of Elements
base	the base to raise to the exponents
exponents	an array of exponents
exponentsCount	the number of exponents in the array

SimultaneousExponentiate() raises the base to each exponent in the exponents array and stores the result at the respective position in the results array.

SimultaneousExponentiate() must be implemented in a derived class.

Precondition: COUNTOF(results) == exponentsCount; COUNTOF(exponents) == exponentsCount

Implements DL_GroupParameters< Integer >.

Definition at line 44 of file luc.cpp.

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

src/cryptopp/luc.h
src/cryptopp/luc.cpp

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation