ElGamal key agreement and encryption schemes default implementation. More...

#include <elgamal.h>

Inheritance diagram for ElGamalObjectImpl< BASE, SCHEME_OPTIONS, KEY >:

Public Member Functions
size_t	FixedMaxPlaintextLength () const

size_t	FixedCiphertextLength () const

const DL_GroupParameters_GFP &	GetGroupParameters () const

DecodingResult	FixedLengthDecrypt (RandomNumberGenerator &rng, const byte cipherText, byte plainText) const

Public Member Functions inherited from DL_ObjectImplBase< BASE, SCHEME_OPTIONS, KEY >
PrivateKey &	AccessPrivateKey ()

PublicKey &	AccessPublicKey ()

const KEY &	GetKey () const

KEY &	AccessKey ()

Public Member Functions inherited from AlgorithmImpl< BASE, SCHEME_OPTIONS::AlgorithmInfo >
std::string	AlgorithmName () const
	The algorithm name. More...

Public Member Functions inherited from ElGamalBase
void	Derive (const DL_GroupParameters< Integer > &groupParams, byte *derivedKey, size_t derivedLength, const Integer &agreedElement, const Integer &ephemeralPublicKey, const NameValuePairs &derivationParams) const

size_t	GetSymmetricKeyLength (size_t plainTextLength) const

size_t	GetSymmetricCiphertextLength (size_t plainTextLength) const

size_t	GetMaxSymmetricPlaintextLength (size_t cipherTextLength) const

void	SymmetricEncrypt (RandomNumberGenerator &rng, const byte key, const byte plainText, size_t plainTextLength, byte *cipherText, const NameValuePairs &parameters) const

DecodingResult	SymmetricDecrypt (const byte key, const byte cipherText, size_t cipherTextLength, byte *plainText, const NameValuePairs &parameters) const

virtual const DL_GroupParameters_GFP &	GetGroupParameters () const =0

Public Member Functions inherited from DL_KeyAgreementAlgorithm_DH< Integer, NoCofactorMultiplication >
Element	AgreeWithEphemeralPrivateKey (const DL_GroupParameters< Element > &params, const DL_FixedBasePrecomputation< Element > &publicPrecomputation, const Integer &privateExponent) const

Element	AgreeWithStaticPrivateKey (const DL_GroupParameters< Element > &params, const Element &publicElement, bool validateOtherPublicKey, const Integer &privateExponent) const

virtual Element	AgreeWithEphemeralPrivateKey (const DL_GroupParameters< Element > &params, const DL_FixedBasePrecomputation< Element > &publicPrecomputation, const Integer &privateExponent) const=0

virtual Element	AgreeWithStaticPrivateKey (const DL_GroupParameters< Element > &params, const Element &publicElement, bool validateOtherPublicKey, const Integer &privateExponent) const=0

Public Member Functions inherited from DL_KeyDerivationAlgorithm< Integer >
virtual bool	ParameterSupported (const char *name) const

virtual void	Derive (const DL_GroupParameters< Integer > &groupParams, byte *derivedKey, size_t derivedLength, const Integer &agreedElement, const Integer &ephemeralPublicKey, const NameValuePairs &derivationParams) const=0

Public Member Functions inherited from DL_SymmetricEncryptionAlgorithm
virtual bool	ParameterSupported (const char *name) const

virtual size_t	GetSymmetricKeyLength (size_t plaintextLength) const =0

virtual size_t	GetSymmetricCiphertextLength (size_t plaintextLength) const =0

virtual size_t	GetMaxSymmetricPlaintextLength (size_t ciphertextLength) const =0

virtual void	SymmetricEncrypt (RandomNumberGenerator &rng, const byte key, const byte plaintext, size_t plaintextLength, byte *ciphertext, const NameValuePairs &parameters) const =0

virtual DecodingResult	SymmetricDecrypt (const byte key, const byte ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters) const =0

Additional Inherited Members
Public Types inherited from DL_ObjectImplBase< BASE, SCHEME_OPTIONS, KEY >
typedef SCHEME_OPTIONS	SchemeOptions

typedef KEY::Element	Element

Public Types inherited from DL_KeyAgreementAlgorithm_DH< Integer, NoCofactorMultiplication >
typedef Integer	Element

Public Types inherited from DL_KeyAgreementAlgorithm< Integer >
typedef Integer	Element

Static Public Member Functions inherited from AlgorithmImpl< BASE, SCHEME_OPTIONS::AlgorithmInfo >
static std::string	StaticAlgorithmName ()
	The algorithm name. More...

Static Public Member Functions inherited from DL_KeyAgreementAlgorithm_DH< Integer, NoCofactorMultiplication >
static const char *	StaticAlgorithmName ()

Detailed Description

template<class BASE, class SCHEME_OPTIONS, class KEY>
class ElGamalObjectImpl< BASE, SCHEME_OPTIONS, KEY >

ElGamal key agreement and encryption schemes default implementation.

Template Parameters

BASE	Base class implementation
SCHEME_OPTIONS	Scheme options
KEY	ElGamal key classes

Since: Crypto++ 1.0

Definition at line 107 of file elgamal.h.