DL_Algorithm_GDSA_ISO15946< T > Class Template Reference

German Digital Signature Algorithm. More...

Inheritance diagram for DL_Algorithm_GDSA_ISO15946< T >:

Public Member Functions
void	Sign (const DL_GroupParameters< T > &params, const Integer &x, const Integer &k, const Integer &e, Integer &r, Integer &s) const
	Sign a message using a private key. More...
bool	Verify (const DL_GroupParameters< T > &params, const DL_PublicKey< T > &publicKey, const Integer &e, const Integer &r, const Integer &s) const
	Verify a message using a public key. More...
Public Member Functions inherited from DL_ElgamalLikeSignatureAlgorithm< T >
virtual Integer	RecoverPresignature (const DL_GroupParameters< T > &params, const DL_PublicKey< T > &publicKey, const Integer &r, const Integer &s) const
	Recover a Presignature. More...
virtual size_t	RLen (const DL_GroupParameters< T > &params) const
	Retrieve R length. More...
virtual size_t	SLen (const DL_GroupParameters< T > &params) const
	Retrieve S length. More...
virtual bool	IsDeterministic () const
	Signature scheme flag. More...

Static Public Member Functions
static const char *	StaticAlgorithmName ()

Detailed Description

template<class T>
class DL_Algorithm_GDSA_ISO15946< T >

German Digital Signature Algorithm.

Template Parameters

T	FieldElement type or class

FieldElement T can be Integer, ECP or EC2N.

The Digital Signature Scheme ECGDSA does not define the algorithm over integers. Rather, the signature algorithm is only defined over elliptic curves. However, the library design is such that the generic algorithm reside in gfpcrypt.h.

See also

Erwin Hess, Marcus Schafheutle, and Pascale Serf The Digital Signature Scheme ECGDSA (October 24, 2006)

Definition at line 505 of file gfpcrypt.h.

Member Function Documentation

Sign()

template<class T >

void DL_Algorithm_GDSA_ISO15946< T >::Sign ( const DL_GroupParameters< T > &  params, const Integer &  privateKey, const Integer &  k, const Integer &  e, Integer &  r, Integer &  s  ) const

inlinevirtual

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

Implements DL_ElgamalLikeSignatureAlgorithm< T >.

Definition at line 512 of file gfpcrypt.h.

Verify()

template<class T >

bool DL_Algorithm_GDSA_ISO15946< T >::Verify ( const DL_GroupParameters< T > &  params, const DL_PublicKey< T > &  publicKey, const Integer &  e, const Integer &  r, const Integer &  s  ) const

inlinevirtual

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

Implements DL_ElgamalLikeSignatureAlgorithm< T >.

Definition at line 522 of file gfpcrypt.h.

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

• gfpcrypt.h