TF_SignerImpl< SCHEME_OPTIONS > Class Template Reference

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#include <pubkey.h>

Inheritance diagram for TF_SignerImpl< SCHEME_OPTIONS >:

Public Types
typedef SCHEME_OPTIONS::PrivateKey	KeyClass
typedef SCHEME_OPTIONS	SchemeOptions

Public Member Functions
const KeyClass &	GetKey () const
KeyClass &	AccessKey ()
PublicKey &	AccessPublicKey ()
const PublicKey &	GetPublicKey () const
PrivateKey &	AccessPrivateKey ()
const PrivateKey &	GetPrivateKey () const
const KeyClass &	GetTrapdoorFunction () const
PK_MessageAccumulator *	NewSignatureAccumulator (RandomNumberGenerator &rng) const
	create a new HashTransformation to accumulate the message to be signed
PK_MessageAccumulator *	NewVerificationAccumulator () const
std::string	AlgorithmName () const
	returns name of this algorithm, not universally implemented yet
void	InputRecoverableMessage (PK_MessageAccumulator &messageAccumulator, const byte *recoverableMessage, size_t recoverableMessageLength) const
size_t	SignAndRestart (RandomNumberGenerator &rng, PK_MessageAccumulator &messageAccumulator, byte *signature, bool restart=true) const
	sign and restart messageAccumulator
size_t	SignatureLength () const
	signature length if it only depends on the key, otherwise 0
size_t	MaxRecoverableLength () const
	length of longest message that can be recovered, or 0 if this signature scheme does not support message recovery
size_t	MaxRecoverableLengthFromSignatureLength (size_t signatureLength) const
	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
bool	IsProbabilistic () const
	requires a random number generator to sign
bool	AllowNonrecoverablePart () const
	whether or not a non-recoverable message part can be signed
bool	RecoverablePartFirst () const
	whether you must input the recoverable part before the non-recoverable part during signing
virtual size_t	Sign (RandomNumberGenerator &rng, PK_MessageAccumulator *messageAccumulator, byte *signature) const
	sign and delete messageAccumulator (even in case of exception thrown)
virtual size_t	SignMessage (RandomNumberGenerator &rng, const byte *message, size_t messageLen, byte *signature) const
	sign a message
virtual size_t	SignMessageWithRecovery (RandomNumberGenerator &rng, const byte *recoverableMessage, size_t recoverableMessageLength, const byte *nonrecoverableMessage, size_t nonrecoverableMessageLength, byte *signature) const
	sign a recoverable message
virtual size_t	MaxSignatureLength (size_t recoverablePartLength=0) const
	maximum signature length produced for a given length of recoverable message part
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 */
CryptoMaterial &	AccessMaterial ()
	returns a reference to the crypto material used by this object
const CryptoMaterial &	GetMaterial () const
	returns a const reference to the crypto material used by this object
void	BERDecode (BufferedTransformation &bt)
	for backwards compatibility, calls AccessMaterial().Load(bt)
void	DEREncode (BufferedTransformation &bt) const
	for backwards compatibility, calls GetMaterial().Save(bt)
virtual Clonable *	Clone () const
	this is not implemented by most classes yet

Static Public Member Functions
static std::string	StaticAlgorithmName ()

Protected Types
typedef RandomizedTrapdoorFunctionInverse	TrapdoorFunctionInterface
typedef PK_SignatureMessageEncodingMethod	MessageEncodingInterface

Protected Member Functions
const TF_SignerBase::MessageEncodingInterface &	GetMessageEncodingInterface () const
const TrapdoorFunctionBounds &	GetTrapdoorFunctionBounds () const
const TF_SignerBase::TrapdoorFunctionInterface &	GetTrapdoorFunctionInterface () const
HashIdentifier	GetHashIdentifier () const
size_t	GetDigestSize () const
size_t	MessageRepresentativeLength () const
size_t	MessageRepresentativeBitLength () const

Detailed Description

template<class SCHEME_OPTIONS>
class TF_SignerImpl< SCHEME_OPTIONS >

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Definition at line 463 of file pubkey.h.

Member Function Documentation

size_t TF_SignerBase::SignAndRestart ( RandomNumberGenerator &  rng, PK_MessageAccumulator &  messageAccumulator, byte *  signature, bool  restart = true  ) const

virtualinherited

sign and restart messageAccumulator

Precondition

size of signature == MaxSignatureLength()

Returns

actual signature length

Implements PK_Signer.

bool TF_SignatureSchemeBase< PK_Signer , TF_Base< RandomizedTrapdoorFunctionInverse, PK_SignatureMessageEncodingMethod > >::IsProbabilistic ( ) const

inlinevirtualinherited

Implements PK_SignatureScheme.

Definition at line 320 of file pubkey.h.

virtual size_t PK_Signer::Sign ( RandomNumberGenerator &  rng, PK_MessageAccumulator *  messageAccumulator, byte *  signature  ) const

virtualinherited

sign and delete messageAccumulator (even in case of exception thrown)

Precondition

size of signature == MaxSignatureLength()

Returns

actual signature length

virtual size_t PK_Signer::SignMessage ( RandomNumberGenerator &  rng, const byte *  message, size_t  messageLen, byte *  signature  ) const

virtualinherited

sign a message

Precondition

size of signature == MaxSignatureLength()

Returns

actual signature length

virtual size_t PK_Signer::SignMessageWithRecovery ( RandomNumberGenerator &  rng, const byte *  recoverableMessage, size_t  recoverableMessageLength, const byte *  nonrecoverableMessage, size_t  nonrecoverableMessageLength, byte *  signature  ) const

virtualinherited

sign a recoverable message

Precondition

size of signature == MaxSignatureLength(recoverableMessageLength)

Returns

actual signature length

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

• pubkey.h