Crypto++
Public Member Functions | Protected Types | Protected Member Functions | List of all members
TF_SignerBase Class Referenceabstract

_ More...

#include <pubkey.h>

Inheritance diagram for TF_SignerBase:
TF_SignatureSchemeBase< PK_Signer, TF_Base< RandomizedTrapdoorFunctionInverse, PK_SignatureMessageEncodingMethod > > PK_Signer TF_Base< RandomizedTrapdoorFunctionInverse, PK_SignatureMessageEncodingMethod > PK_SignatureScheme PrivateKeyAlgorithm AsymmetricAlgorithm Algorithm Clonable AlgorithmImpl< TF_SignerBase, SCHEME_OPTIONS::AlgorithmInfo > TF_ObjectImplBase< TF_SignerBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > TF_ObjectImpl< TF_SignerBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > TF_SignerImpl< SCHEME_OPTIONS >

Public Member Functions

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 More...
 
size_t SignatureLength () const
 
size_t MaxRecoverableLength () const
 
size_t MaxRecoverableLengthFromSignatureLength (size_t signatureLength) const
 
bool IsProbabilistic () const
 
bool AllowNonrecoverablePart () const
 
bool RecoverablePartFirst () const
 
virtual PK_MessageAccumulatorNewSignatureAccumulator (RandomNumberGenerator &rng) const =0
 create a new HashTransformation to accumulate the message to be signed
 
virtual size_t Sign (RandomNumberGenerator &rng, PK_MessageAccumulator *messageAccumulator, byte *signature) const
 sign and delete messageAccumulator (even in case of exception thrown) More...
 
virtual size_t SignMessage (RandomNumberGenerator &rng, const byte *message, size_t messageLen, byte *signature) const
 sign a message More...
 
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 More...
 
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 */
 
CryptoMaterialAccessMaterial ()
 returns a reference to the crypto material used by this object
 
const CryptoMaterialGetMaterial () const
 returns a const reference to the crypto material used by this object
 
virtual PrivateKeyAccessPrivateKey ()=0
 
virtual const PrivateKeyGetPrivateKey () const
 
void BERDecode (BufferedTransformation &bt)
 for backwards compatibility, calls AccessMaterial().Load(bt)
 
void DEREncode (BufferedTransformation &bt) const
 for backwards compatibility, calls GetMaterial().Save(bt)
 
virtual std::string AlgorithmName () const
 returns name of this algorithm, not universally implemented yet
 
virtual ClonableClone () const
 this is not implemented by most classes yet
 

Protected Types

typedef
RandomizedTrapdoorFunctionInverse 
TrapdoorFunctionInterface
 
typedef
PK_SignatureMessageEncodingMethod 
MessageEncodingInterface
 

Protected Member Functions

size_t MessageRepresentativeLength () const
 
size_t MessageRepresentativeBitLength () const
 
virtual HashIdentifier GetHashIdentifier () const =0
 
virtual size_t GetDigestSize () const =0
 
virtual const
TrapdoorFunctionBounds
GetTrapdoorFunctionBounds () const =0
 
virtual const
TrapdoorFunctionInterface
GetTrapdoorFunctionInterface () const =0
 
virtual const
MessageEncodingInterface
GetMessageEncodingInterface () const =0
 

Detailed Description

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Definition at line 335 of file pubkey.h.

Member Function Documentation

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

sign and restart messageAccumulator

Precondition
size of signature == MaxSignatureLength()
Returns
actual signature length

Implements PK_Signer.

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

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