ElGamal encryption for safe interop. More...
#include <gfpcrypt.h>
Inheritance diagram for DL_GroupParameters_ElGamal:
Public Types | |
| typedef NoCofactorMultiplication | DefaultCofactorOption |
| Public Types inherited from DL_GroupParameters_GFP_DefaultSafePrime | |
| typedef NoCofactorMultiplication | DefaultCofactorOption |
| Public Types inherited from DL_GroupParameters_IntegerBasedImpl< ModExpPrecomputation > | |
| typedef GROUP_PRECOMP::Element | Element |
| Public Types inherited from DL_GroupParametersImpl< ModExpPrecomputation, DL_FixedBasePrecomputationImpl< typename GROUP_PRECOMP::Element >, DL_GroupParameters_IntegerBased > | |
| typedef ModExpPrecomputation | GroupPrecomputation |
| typedef GROUP_PRECOMP::Element | Element |
| typedef DL_FixedBasePrecomputationImpl< typename GROUP_PRECOMP::Element > | BasePrecomputation |
| Public Types inherited from DL_GroupParameters< Integer > | |
| typedef Integer | Element |
Public Member Functions | |
| Integer | GetMaxExponent () const |
| Retrieve the maximum exponent for the group. More... | |
| Public Member Functions inherited from DL_GroupParameters_GFP | |
| 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... | |
| bool | GetVoidValue (const char *name, const std::type_info &valueType, void *pValue) const |
| Get a named value. 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 |
| Public Member Functions inherited from DL_GroupParameters_IntegerBasedImpl< ModExpPrecomputation > | |
| 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< ModExpPrecomputation, DL_FixedBasePrecomputationImpl< typename GROUP_PRECOMP::Element > > &rhs) const |
| bool | operator!= (const DL_GroupParameters_IntegerBasedImpl< ModExpPrecomputation, DL_FixedBasePrecomputationImpl< typename GROUP_PRECOMP::Element > > &rhs) const |
| Public Member Functions inherited from DL_GroupParametersImpl< ModExpPrecomputation, DL_FixedBasePrecomputationImpl< typename GROUP_PRECOMP::Element >, DL_GroupParameters_IntegerBased > | |
| 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 | |
| void | Initialize (const DL_GroupParameters_IntegerBased ¶ms) |
| 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) |
| Generate a random key. More... | |
| 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 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 |
| Determine if subgroup membership check is fast. More... | |
| void | EncodeElement (bool reversible, const Element &element, byte *encoded) const |
| Encodes the element. More... | |
| unsigned int | GetEncodedElementSize (bool reversible) const |
| Retrieve 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 |
| Retrieve the maximum exponent for the group. More... | |
| OID | GetAlgorithmID () const |
| Retrieve the OID of the algorithm. More... | |
| virtual const Integer & | GetModulus () const =0 |
| Retrieve the modulus for the group. More... | |
| virtual void | SetModulusAndSubgroupGenerator (const Integer &p, const Integer &g)=0 |
| Set group parameters. More... | |
| void | SetSubgroupOrder (const Integer &q) |
| Set subgroup order. More... | |
| 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 void | BERDecode (BufferedTransformation &bt)=0 |
| Decode this object from a BufferedTransformation. More... | |
| virtual void | DEREncode (BufferedTransformation &bt) const =0 |
| Encode this object into a BufferedTransformation. More... | |
| virtual void | BEREncode (BufferedTransformation &bt) const |
| Encode this object into a BufferedTransformation. More... | |
| Public Member Functions inherited from DL_GroupParameters< Integer > | |
| 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 DL_FixedBasePrecomputation< Element > & | AccessBasePrecomputation ()=0 |
| Retrieves the group precomputation. 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... | |
| 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 ¶ms=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 bool | Validate (RandomNumberGenerator &rng, unsigned int level) const =0 |
| Check this object for errors. 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... | |
| virtual void | Precompute (unsigned int precomputationStorage) |
| Perform precomputation. More... | |
| virtual void | LoadPrecomputation (BufferedTransformation &storedPrecomputation) |
| Retrieve previously saved precomputation. More... | |
| virtual void | SavePrecomputation (BufferedTransformation &storedPrecomputation) const |
| Save precomputation for later use. 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... | |
| virtual CRYPTOPP_DLL bool | GetVoidValue (const char *name, const std::type_info &valueType, void *pValue) const =0 |
| Get a named value. More... | |
Additional Inherited Members | |
| Static Public Member Functions inherited from DL_GroupParameters_IntegerBased | |
| static std::string | StaticAlgorithmNamePrefix () |
| 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
Member Typedef Documentation
◆ DefaultCofactorOption
Definition at line 294 of file gfpcrypt.h.
Constructor & Destructor Documentation
◆ ~DL_GroupParameters_ElGamal()
|
inlinevirtual |
Definition at line 296 of file gfpcrypt.h.
Member Function Documentation
◆ GetMaxExponent()
|
inlinevirtual |
Retrieve the maximum exponent for the group.
- Returns
- the maximum exponent for the group
Reimplemented from DL_GroupParameters_IntegerBased.
Definition at line 298 of file gfpcrypt.h.
The documentation for this class was generated from the following file:
