Interface for Elgamal-like signature algorithms. More...

#include <pubkey.h>

Inheritance diagram for DL_ElgamalLikeSignatureAlgorithm< T >:

Public Member Functions
virtual void	Sign (const DL_GroupParameters< T > &params, const Integer &privateKey, const Integer &k, const Integer &e, Integer &r, Integer &s) const =0
	Sign a message using a private key.

virtual bool	Verify (const DL_GroupParameters< T > &params, const DL_PublicKey< T > &publicKey, const Integer &e, const Integer &r, const Integer &s) const =0
	Verify a message using a public key.

virtual Integer	RecoverPresignature (const DL_GroupParameters< T > &params, const DL_PublicKey< T > &publicKey, const Integer &r, const Integer &s) const
	Recover a Presignature.

virtual size_t	RLen (const DL_GroupParameters< T > &params) const
	Retrieve R length.

virtual size_t	SLen (const DL_GroupParameters< T > &params) const
	Retrieve S length.

virtual bool	IsDeterministic () const
	Signature scheme flag.

Detailed Description

template<class T>
class DL_ElgamalLikeSignatureAlgorithm< T >

Interface for Elgamal-like signature algorithms.

Template Parameters

T	Field element type or class

Field element T can be Integer, ECP or EC2N.

Definition at line 1406 of file pubkey.h.

Constructor & Destructor Documentation

◆ ~DL_ElgamalLikeSignatureAlgorithm()

template<class T >

virtual DL_ElgamalLikeSignatureAlgorithm< T >::~DL_ElgamalLikeSignatureAlgorithm ( )

inlinevirtual

Definition at line 1409 of file pubkey.h.

Member Function Documentation

◆ IsDeterministic()

template<class T >

virtual bool DL_ElgamalLikeSignatureAlgorithm< T >::IsDeterministic ( ) const

inlinevirtual

Signature scheme flag.

Returns: true if the signature scheme is deterministic, false otherwise

IsDeterministic() is provided for DL signers. It is used by RFC 6979 signature schemes.

Reimplemented in DL_Algorithm_DSA_RFC6979< T, H >, and DL_Algorithm_DSA_RFC6979< EC::Point, H >.

Definition at line 1453 of file pubkey.h.

◆ RecoverPresignature()

template<class T >

virtual Integer DL_ElgamalLikeSignatureAlgorithm< T >::RecoverPresignature	(	const DL_GroupParameters< T > &	params,
		const DL_PublicKey< T > &	publicKey,
		const Integer &	r,
		const Integer &	s
	)		const

inlinevirtual

Recover a Presignature.

Parameters

params	GroupParameters
publicKey	public key
r	r part of signature
s	s part of signature

Definition at line 1433 of file pubkey.h.

◆ RLen()

template<class T >

virtual size_t DL_ElgamalLikeSignatureAlgorithm< T >::RLen ( const DL_GroupParameters< T > & params ) const

inlinevirtual

Retrieve R length.

Parameters

params GroupParameters

Reimplemented in DL_Algorithm_LUC_HMP.

Definition at line 1442 of file pubkey.h.

◆ Sign()

template<class T >

virtual void DL_ElgamalLikeSignatureAlgorithm< T >::Sign	(	const DL_GroupParameters< T > &	params,
		const Integer &	privateKey,
		const Integer &	k,
		const Integer &	e,
		Integer &	r,
		Integer &	s
	)		const

pure virtual

Sign a message using a private key.

Parameters

params	GroupParameters
privateKey	private key
k	signing exponent
e	encoded message
r	r part of signature
s	s part of signature

Implemented in DL_Algorithm_LUC_HMP, DL_Algorithm_GDSA< T >, DL_Algorithm_GDSA_ISO15946< T >, and DL_Algorithm_NR< T >.

◆ SLen()

template<class T >

virtual size_t DL_ElgamalLikeSignatureAlgorithm< T >::SLen ( const DL_GroupParameters< T > & params ) const

inlinevirtual

Retrieve S length.

Parameters

params GroupParameters

Definition at line 1447 of file pubkey.h.

◆ Verify()

template<class T >

virtual bool DL_ElgamalLikeSignatureAlgorithm< T >::Verify	(	const DL_GroupParameters< T > &	params,
		const DL_PublicKey< T > &	publicKey,
		const Integer &	e,
		const Integer &	r,
		const Integer &	s
	)		const

pure virtual

Verify a message using a public key.

Parameters

params	GroupParameters
publicKey	public key
e	encoded message
r	r part of signature
s	s part of signature

Implemented in DL_Algorithm_LUC_HMP, DL_Algorithm_GDSA< T >, DL_Algorithm_GDSA_ISO15946< T >, and DL_Algorithm_NR< T >.

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

G:/work/subversion/scol-technologies/trunk/scol/plugins/security/cryptopp/pubkey.h

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ~DL_ElgamalLikeSignatureAlgorithm()

Member Function Documentation

◆ IsDeterministic()

◆ RecoverPresignature()

◆ RLen()

◆ Sign()

◆ SLen()

◆ Verify()