Crypto++ 8.9 Free C++ class library of cryptographic schemes

Public Member Functions | List of all members
DL_GroupParameters_LUC Class Reference

LUC GroupParameters specialization. More...

Inheritance diagram for DL_GroupParameters_LUC:

## Public Member Functions
bool | IsIdentity (const Integer &element) const
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 >
bool | GetVoidValue (const char *name, const std::type_info &valueType, void *pValue) const
| Get a named value. More...
void | AssignFrom (const NameValuePairs &source)
| Initialize or reinitialize this key. 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
| Retrieve the modulus for the group. More...
const Integer & | GetGenerator () const
| Retrieves a reference to the group generator. More...
void | SetModulusAndSubgroupGenerator (const Integer &p, const Integer &g)
| Set group parameters. More...
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< GROUP_PRECOMP, BASE_PRECOMP, BASE >
const DL_GroupPrecomputation< Element > & | GetGroupPrecomputation () const
| 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 Integer & | GetSubgroupOrder () 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...
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 | 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...
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 >
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
Public Types inherited from DL_GroupParameters_IntegerBasedImpl< DL_GroupPrecomputation_LUC, DL_BasePrecomputation_LUC >
typedef GROUP_PRECOMP::Element | Element
Public Types inherited from DL_GroupParametersImpl< GROUP_PRECOMP, BASE_PRECOMP, BASE >
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
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. More...

## Detailed Description

LUC GroupParameters specialization.

Since
  Crypto++ 2.1

Definition at line 223 of file luc.h.

## Member Function Documentation

## ◆ SimultaneousExponentiate()

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< typename GROUP_PRECOMP::Element >.

Definition at line 45 of file luc.cpp.

## ◆ GetVoidValue()

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

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()

Implements NameValuePairs.

Definition at line 243 of file luc.h.

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

- luc.h
- luc.cpp