PK_SignatureMessageEncodingMethod Class Reference

Interface for message encoding method for public key signature schemes. More...

#include <pubkey.h>

Inheritance diagram for PK_SignatureMessageEncodingMethod:

Classes
struct	HashIdentifierLookup

Public Member Functions
virtual size_t	MinRepresentativeBitLength (size_t hashIdentifierLength, size_t digestLength) const
virtual size_t	MaxRecoverableLength (size_t representativeBitLength, size_t hashIdentifierLength, size_t digestLength) const
bool	IsProbabilistic () const
	Determines whether an encoding method requires a random number generator. More...
bool	AllowNonrecoverablePart () const
virtual bool	RecoverablePartFirst () const
virtual void	ProcessSemisignature (HashTransformation &hash, const byte *semisignature, size_t semisignatureLength) const
virtual void	ProcessRecoverableMessage (HashTransformation &hash, const byte *recoverableMessage, size_t recoverableMessageLength, const byte *presignature, size_t presignatureLength, SecByteBlock &semisignature) const
virtual void	ComputeMessageRepresentative (RandomNumberGenerator &rng, const byte *recoverableMessage, size_t recoverableMessageLength, HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty, byte *representative, size_t representativeBitLength) const =0
virtual bool	VerifyMessageRepresentative (HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty, byte *representative, size_t representativeBitLength) const =0
virtual DecodingResult	RecoverMessageFromRepresentative (HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty, byte *representative, size_t representativeBitLength, byte *recoveredMessage) const
virtual DecodingResult	RecoverMessageFromSemisignature (HashTransformation &hash, HashIdentifier hashIdentifier, const byte *presignature, size_t presignatureLength, const byte *semisignature, size_t semisignatureLength, byte *recoveredMessage) const

Detailed Description

Interface for message encoding method for public key signature schemes.

PK_SignatureMessageEncodingMethod provides interfaces for message encoding method for public key signature schemes. The methods support both trapdoor functions (TF_*) and discrete logarithm (DL_*) based schemes.

Definition at line 310 of file pubkey.h.

Constructor & Destructor Documentation

~PK_SignatureMessageEncodingMethod()

virtual PK_SignatureMessageEncodingMethod::~PK_SignatureMessageEncodingMethod ( )

inlinevirtual

Definition at line 313 of file pubkey.h.

Member Function Documentation

MinRepresentativeBitLength()

virtual size_t PK_SignatureMessageEncodingMethod::MinRepresentativeBitLength ( size_t  hashIdentifierLength, size_t  digestLength  ) const

inlinevirtual

Definition at line 315 of file pubkey.h.

MaxRecoverableLength()

virtual size_t PK_SignatureMessageEncodingMethod::MaxRecoverableLength ( size_t  representativeBitLength, size_t  hashIdentifierLength, size_t  digestLength  ) const

inlinevirtual

Definition at line 317 of file pubkey.h.

IsProbabilistic()

bool PK_SignatureMessageEncodingMethod::IsProbabilistic ( ) const

inline

Determines whether an encoding method requires a random number generator.

Returns

true if the encoding method requires a RandomNumberGenerator()

if IsProbabilistic() returns false, then NullRNG() can be passed to functions that take RandomNumberGenerator().

See also

Bellare and RogawayPSS: Provably Secure Encoding Method for Digital Signatures

Definition at line 326 of file pubkey.h.

AllowNonrecoverablePart()

bool PK_SignatureMessageEncodingMethod::AllowNonrecoverablePart ( ) const

inline

Definition at line 328 of file pubkey.h.

RecoverablePartFirst()

virtual bool PK_SignatureMessageEncodingMethod::RecoverablePartFirst ( ) const

inlinevirtual

Definition at line 330 of file pubkey.h.

ProcessSemisignature()

virtual void PK_SignatureMessageEncodingMethod::ProcessSemisignature ( HashTransformation &  hash, const byte *  semisignature, size_t  semisignatureLength  ) const

inlinevirtual

Definition at line 334 of file pubkey.h.

ProcessRecoverableMessage()

virtual void PK_SignatureMessageEncodingMethod::ProcessRecoverableMessage ( HashTransformation &  hash, const byte *  recoverableMessage, size_t  recoverableMessageLength, const byte *  presignature, size_t  presignatureLength, SecByteBlock &  semisignature  ) const

inlinevirtual

Definition at line 338 of file pubkey.h.

RecoverMessageFromRepresentative()

virtual DecodingResult PK_SignatureMessageEncodingMethod::RecoverMessageFromRepresentative ( HashTransformation &  hash, HashIdentifier  hashIdentifier, bool  messageEmpty, byte *  representative, size_t  representativeBitLength, byte *  recoveredMessage  ) const

inlinevirtual

Definition at line 358 of file pubkey.h.

RecoverMessageFromSemisignature()

virtual DecodingResult PK_SignatureMessageEncodingMethod::RecoverMessageFromSemisignature ( HashTransformation &  hash, HashIdentifier  hashIdentifier, const byte *  presignature, size_t  presignatureLength, const byte *  semisignature, size_t  semisignatureLength, byte *  recoveredMessage  ) const

inlinevirtual

Definition at line 366 of file pubkey.h.

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

• pubkey.h