PK_SignatureScheme Class Reference

#include <cryptlib.h>

Inheritance diagram for PK_SignatureScheme:

List of all members.

---

Detailed Description

interface for public-key signers and verifiers

This class provides an interface common to signers and verifiers for querying scheme properties.

Definition at line 1202 of file cryptlib.h.

Public Member Functions
virtual unsigned int	SignatureLength () const =0
	signature length if it only depends on the key, otherwise 0
virtual unsigned int	MaxSignatureLength (unsigned int recoverablePartLength=0) const
	maximum signature length produced for a given length of recoverable message part
virtual unsigned int	MaxRecoverableLength () const =0
	length of longest message that can be recovered, or 0 if this signature scheme does not support message recovery
virtual unsigned int	MaxRecoverableLengthFromSignatureLength (unsigned int signatureLength) const =0
	length of longest message that can be recovered from a signature of given length, or 0 if this signature scheme does not support message recovery
virtual bool	IsProbabilistic () const =0
	requires a random number generator to sign
virtual bool	AllowNonrecoverablePart () const =0
	whether or not a non-recoverable message part can be signed
virtual bool	SignatureUpfront () const
	if this function returns true, during verification you must input the signature before the message, otherwise you can input it at anytime */
virtual bool	RecoverablePartFirst () const =0
	whether you must input the recoverable part before the non-recoverable part during signing

---

Member Function Documentation

virtual bool PK_SignatureScheme::IsProbabilistic (   )  const [pure virtual]

requires a random number generator to sign if this returns false, NullRNG() can be passed to functions that take RandomNumberGenerator &

---

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

• cryptlib.h

---