Crypto++  8.2
Free C++ class library of cryptographic schemes
Public Types | Public Member Functions | List of all members
DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE > Class Template Reference

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

+ 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< typename GROUP_PRECOMP::Element >
typedef typename GROUP_PRECOMP::Element Element
 

Public Member Functions

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< typename GROUP_PRECOMP::Element >
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)
 Sets the subgroup generator. More...
 
virtual Element ExponentiateBase (const Integer &exponent) const
 Exponentiates the base. More...
 
virtual Element ExponentiateElement (const Element &base, const Integer &exponent) const
 Exponentiates an element. More...
 
virtual const DL_GroupPrecomputation< Element > & GetGroupPrecomputation () const=0
 Retrieves the group precomputation. More...
 
virtual const DL_FixedBasePrecomputation< Element > & GetBasePrecomputation () const=0
 Retrieves the group precomputation. More...
 
virtual const IntegerGetSubgroupOrder () const=0
 Retrieves the subgroup order. More...
 
virtual Integer GetMaxExponent () const=0
 Retrieves the maximum exponent for the group. More...
 
virtual Integer GetGroupOrder () const
 Retrieves the order of the group. More...
 
virtual Integer GetCofactor () const
 Retrieves the cofactor. More...
 
virtual unsigned int GetEncodedElementSize (bool reversible) const=0
 Retrieves the encoded element's size. More...
 
virtual void EncodeElement (bool reversible, const Element &element, byte *encoded) const=0
 Encodes the element. More...
 
virtual Element DecodeElement (const byte *encoded, bool checkForGroupMembership) const=0
 Decodes the element. More...
 
virtual Integer ConvertElementToInteger (const Element &element) const=0
 Converts an element to an Integer. More...
 
virtual bool ValidateGroup (RandomNumberGenerator &rng, unsigned int level) const=0
 Check the group for errors. More...
 
virtual bool ValidateElement (unsigned int level, const Element &element, const DL_FixedBasePrecomputation< Element > *precomp) const=0
 Check the element for errors. More...
 
virtual bool FastSubgroupCheckAvailable () const=0
 
virtual bool IsIdentity (const Element &element) const=0
 Determines if an element is an identity. More...
 
virtual void SimultaneousExponentiate (Element *results, const Element &base, const Integer *exponents, unsigned int exponentsCount) const=0
 Exponentiates a base to multiple exponents. More...
 
- Public Member Functions inherited from GeneratableCryptoMaterial
virtual void GenerateRandom (RandomNumberGenerator &rng, const NameValuePairs &params=g_nullNameValuePairs)
 Generate a random key or crypto parameters. More...
 
void GenerateRandomWithKeySize (RandomNumberGenerator &rng, unsigned int keySize)
 Generate a random key or crypto parameters. More...
 
- Public Member Functions inherited from CryptoMaterial
virtual void AssignFrom (const NameValuePairs &source)=0
 Assign values to this object. More...
 
virtual void ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
 Check this object for errors. More...
 
virtual void Save (BufferedTransformation &bt) const
 Saves a key to a BufferedTransformation. More...
 
virtual void Load (BufferedTransformation &bt)
 Loads a key from a BufferedTransformation. More...
 
virtual bool SupportsPrecomputation () const
 Determines whether the object supports precomputation. More...
 
void DoQuickSanityCheck () const
 Perform a quick sanity check. More...
 
- Public Member Functions inherited from 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 >
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...
 
CRYPTOPP_DLL bool GetWord64Value (const char *name, word64 &value) const
 Get a named value with type word64. More...
 
CRYPTOPP_DLL word64 GetWord64ValueWithDefault (const char *name, word64 defaultValue) const
 Get a named value with type word64, 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...
 

Additional Inherited Members

- 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...
 

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_PRECOMPgroup precomputation class
BASE_PRECOMPfixed base precomputation class
BASEclass or type of an element

Definition at line 1013 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
inline

Retrieves the group precomputation.

Returns
a const reference to the group precomputation

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
inline

Retrieves the group precomputation.

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

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< typename GROUP_PRECOMP::Element >.

Definition at line 1032 of file pubkey.h.


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