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PK_VerifierWithRecovery Class Reference

abstract base class for public-key verifiers with recovery. More...

#include <cryptlib.h>

Inheritance diagram for PK_VerifierWithRecovery:

List of all members.

Public Methods
virtual HashModule*	NewLeftoverMessageAccumulator (const byte *signature)const=0
	create a new HashModule to accumulate leftover message.
virtual unsigned int	PartialRecover (HashModule *leftoverMessageAccumulator,byte *recoveredMessage)const=0
	partially recover a message from its signature, return length of recoverd message, or 0 if signature is invalid. More...
virtual unsigned int	Recover (const byte *signature,byte *recoveredMessage)const=0
	recover a message from its signature, return length of message, or 0 if signature is invalid. More...

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Detailed Description

abstract base class for public-key verifiers with recovery.

A PK_VerifierWithRecovery can also be used the same way as a PK_Verifier, where the signature and the entire message is given to Verify() or VerifyMessage() as input.

Definition at line 660 of file cryptlib.h.

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Member Function Documentation

unsigned int PK_VerifierWithRecovery::PartialRecover ( HashModule * messageAccumulator, byte * recoveredMessage ) const [pure virtual]

partially recover a message from its signature, return length of recoverd message, or 0 if signature is invalid. Preconditions: \begin{itemize} \item leftoverMessageAccumulator was obtained by calling NewLeftoverMessageAccumulator(signature) \item HashModule::Final() has not been called on leftoverMessageAccumulator \item length of signature == SignatureLength() \item size of recoveredMessage == MaximumRecoverableLength() \end{itemize} Reimplemented in VerifierWithRecoveryTemplate. Referenced by VerifierWithRecoveryTemplate::Recover().

unsigned int PK_VerifierWithRecovery::Recover ( const byte * signature, byte * recoveredMessage ) const [pure virtual]

recover a message from its signature, return length of message, or 0 if signature is invalid. This function should be equivalent to PartialRecover(NewLeftoverMessageAccumulator(signature), recoveredMessage). Preconditions: \begin{itemize} \item length of signature == SignatureLength() \item size of recoveredMessage == MaximumRecoverableLength() \end{itemize} Reimplemented in VerifierWithRecoveryTemplate.

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

• cryptlib.h

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