Base implementation of Discrete Log (DL) group parameters. More...

#include <pubkey.h>

Inheritance diagram for DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >:

Public Types
typedef GROUP_PRECOMP	GroupPrecomputation

typedef GROUP_PRECOMP::Element	Element

typedef BASE_PRECOMP	BasePrecomputation

Public Types inherited from DL_GroupParameters< T >
typedef T	Element

Public Member Functions
const DL_GroupPrecomputation< Element > &	GetGroupPrecomputation () const
	Retrieves the group precomputation.

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

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

Public Member Functions inherited from DL_GroupParameters< T >
bool	Validate (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors.

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

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

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

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

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

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

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

virtual Element	ExponentiateBase (const Integer &exponent) const
	Exponentiates the base.

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

virtual const Integer &	GetSubgroupOrder () const =0
	Retrieves the subgroup order.

virtual Integer	GetMaxExponent () const =0
	Retrieves the maximum exponent for the group.

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

virtual Integer	GetCofactor () const
	Retrieves the cofactor.

virtual unsigned int	GetEncodedElementSize (bool reversible) const =0
	Retrieves the encoded element's size.

virtual void	EncodeElement (bool reversible, const Element &element, byte *encoded) const =0
	Encodes the element.

virtual Element	DecodeElement (const byte *encoded, bool checkForGroupMembership) const =0
	Decodes the element.

virtual Integer	ConvertElementToInteger (const Element &element) const =0
	Converts an element to an Integer.

virtual bool	ValidateGroup (RandomNumberGenerator &rng, unsigned int level) const =0
	Check the group for errors.

virtual bool	ValidateElement (unsigned int level, const Element &element, const DL_FixedBasePrecomputation< Element > *precomp) const =0
	Check the element for errors.

virtual bool	FastSubgroupCheckAvailable () const =0

virtual bool	IsIdentity (const Element &element) const =0
	Determines if an element is an identity.

virtual void	SimultaneousExponentiate (Element results, const Element &base, const Integer exponents, unsigned int exponentsCount) const =0
	Exponentiates a base to multiple exponents.

Public Member Functions inherited from GeneratableCryptoMaterial
virtual void	GenerateRandom (RandomNumberGenerator &rng, const NameValuePairs &params=g_nullNameValuePairs)
	Generate a random key or crypto parameters.

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

Public Member Functions inherited from CryptoMaterial
virtual void	AssignFrom (const NameValuePairs &source)=0
	Assign values to this object.

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

virtual void	Save (BufferedTransformation &bt) const
	Saves a key to a BufferedTransformation.

virtual void	Load (BufferedTransformation &bt)
	Loads a key from a BufferedTransformation.

void	DoQuickSanityCheck () const
	Perform a quick sanity check.

Public Member Functions inherited from NameValuePairs
template<class T >
bool	GetThisObject (T &object) const
	Get a copy of this object or subobject.

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

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

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

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

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

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

CRYPTOPP_DLL bool	GetWord64Value (const char *name, word64 &value) const
	Get a named value with type word64.

CRYPTOPP_DLL word64	GetWord64ValueWithDefault (const char *name, word64 defaultValue) const
	Get a named value with type word64, with default.

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

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

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

Detailed Description

template<class GROUP_PRECOMP, class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>
class DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >

Base implementation of Discrete Log (DL) group parameters.

Template Parameters

GROUP_PRECOMP	group precomputation class
BASE_PRECOMP	fixed base precomputation class
BASE	class or type of an element

Definition at line 1013 of file pubkey.h.

Member Typedef Documentation

◆ GroupPrecomputation

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

typedef GROUP_PRECOMP DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::GroupPrecomputation

Definition at line 1016 of file pubkey.h.

◆ Element

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

typedef GROUP_PRECOMP::Element DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::Element

Definition at line 1017 of file pubkey.h.

◆ BasePrecomputation

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

typedef BASE_PRECOMP DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::BasePrecomputation

Definition at line 1018 of file pubkey.h.

Constructor & Destructor Documentation

◆ ~DL_GroupParametersImpl()

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

virtual DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::~DL_GroupParametersImpl ( )

inlinevirtual

Definition at line 1020 of file pubkey.h.

Member Function Documentation

◆ GetGroupPrecomputation()

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

const DL_GroupPrecomputation< Element > & DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::GetGroupPrecomputation ( ) const

inlinevirtual

Retrieves the group precomputation.

Returns: a const reference to the group precomputation

Implements DL_GroupParameters< T >.

Definition at line 1024 of file pubkey.h.

◆ GetBasePrecomputation()

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

const DL_FixedBasePrecomputation< Element > & DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::GetBasePrecomputation ( ) const

inlinevirtual

Retrieves the group precomputation.

Returns: a const reference to the group precomputation using a fixed base

Implements DL_GroupParameters< T >.

Definition at line 1028 of file pubkey.h.

◆ AccessBasePrecomputation()

template<class GROUP_PRECOMP , class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<typename GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<typename GROUP_PRECOMP::Element>>

DL_FixedBasePrecomputation< Element > & DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >::AccessBasePrecomputation ( )

inlinevirtual

Retrieves the group precomputation.

Returns: a non-const reference to the group precomputation using a fixed base

Implements DL_GroupParameters< T >.

Definition at line 1032 of file pubkey.h.

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

pubkey.h

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ GroupPrecomputation

◆ Element

◆ BasePrecomputation

Constructor & Destructor Documentation

◆ ~DL_GroupParametersImpl()

Member Function Documentation

◆ GetGroupPrecomputation()

◆ GetBasePrecomputation()

◆ AccessBasePrecomputation()