DL_SignerImpl< SCHEME_OPTIONS > Class Template Reference

#include <pubkey.h>

Inheritance diagram for DL_SignerImpl< SCHEME_OPTIONS >:

DL_ObjectImpl< DL_SignerBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > DL_ObjectImplBase< DL_SignerBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > AlgorithmImpl< DL_SignerBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS::AlgorithmInfo > DL_SignerBase< SCHEME_OPTIONS::Element > DL_SignatureSchemeBase< PK_Signer, DL_PrivateKey< SCHEME_OPTIONS::Element > > PK_Signer DL_Base< DL_PrivateKey< SCHEME_OPTIONS::Element > > PK_SignatureScheme PrivateKeyAlgorithm AsymmetricAlgorithm Algorithm Clonable List of all members.

Detailed Description

template<class SCHEME_OPTIONS>
class DL_SignerImpl< SCHEME_OPTIONS >

_

Definition at line 1322 of file pubkey.h.

Public Types

typedef SCHEME_OPTIONS::PrivateKey::Element Element
typedef SCHEME_OPTIONS SchemeOptions

Public Member Functions

PK_MessageAccumulatorNewSignatureAccumulator (RandomNumberGenerator &rng) const
 create a new HashTransformation to accumulate the message to be signed
PrivateKeyAccessPrivateKey ()
PublicKeyAccessPublicKey ()
const SCHEME_OPTIONS::PrivateKey & GetKey () const
SCHEME_OPTIONS::PrivateKey & AccessKey ()
std::string AlgorithmName () const
 returns name of this algorithm, not universally implemented yet
void RawSign (const Integer &k, const Integer &e, Integer &r, Integer &s) const
void InputRecoverableMessage (PK_MessageAccumulator &messageAccumulator, const byte *recoverableMessage, size_t recoverableMessageLength) const
size_t SignAndRestart (RandomNumberGenerator &rng, PK_MessageAccumulator &messageAccumulator, byte *signature, bool restart) 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 */
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 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 ClonableClone () const
 this is not implemented by most classes yet

Static Public Member Functions

static std::string __cdecl StaticAlgorithmName ()

Protected Types

typedef DL_PrivateKey< SCHEME_OPTIONS::Element > KeyInterface

Protected Member Functions

const DL_ElgamalLikeSignatureAlgorithm<
Element > & 
GetSignatureAlgorithm () const
const DL_KeyAgreementAlgorithm<
Element > & 
GetKeyAgreementAlgorithm () const
const DL_KeyDerivationAlgorithm<
Element > & 
GetKeyDerivationAlgorithm () const
const DL_SymmetricEncryptionAlgorithmGetSymmetricEncryptionAlgorithm () const
HashIdentifier GetHashIdentifier () const
const PK_SignatureMessageEncodingMethodGetMessageEncodingInterface () const
DL_SignerBase< SCHEME_OPTIONS::Element
>::KeyInterface
AccessKeyInterface ()
const DL_SignerBase< SCHEME_OPTIONS::Element
>::KeyInterface
GetKeyInterface () const
size_t GetDigestSize () const
void RestartMessageAccumulator (RandomNumberGenerator &rng, PK_MessageAccumulatorBase &ma) const
size_t MessageRepresentativeLength () const
size_t MessageRepresentativeBitLength () const
const DL_GroupParameters<
Element > & 
GetAbstractGroupParameters () const
DL_GroupParameters< Element > & AccessAbstractGroupParameters ()


Member Function Documentation

size_t DL_SignerBase< SCHEME_OPTIONS::Element >::SignAndRestart ( RandomNumberGenerator rng,
PK_MessageAccumulator messageAccumulator,
byte *  signature,
bool  restart 
) const [inline, virtual, inherited]

sign and restart messageAccumulator

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

Implements PK_Signer.

Definition at line 1018 of file pubkey.h.

References PK_MessageAccumulatorBase::AccessHash(), Integer::Encode(), DL_Base< KEY_INTERFACE >::GetAbstractGroupParameters(), DL_PrivateKey< T >::GetPrivateExponent(), PK_MessageAccumulatorBase::m_empty, PK_MessageAccumulatorBase::m_k, PK_MessageAccumulatorBase::m_presignature, PK_MessageAccumulatorBase::m_recoverableMessage, PK_MessageAccumulatorBase::m_semisignature, DL_SignatureSchemeBase< INTERFACE, KEY_INTERFACE >::MessageRepresentativeBitLength(), DL_SignatureSchemeBase< INTERFACE, KEY_INTERFACE >::SignatureLength(), and SecBlock< T, A >::size().

bool DL_SignatureSchemeBase< PK_Signer , DL_PrivateKey< SCHEME_OPTIONS::Element > >::IsProbabilistic (  )  const [inline, virtual, inherited]

Implements PK_SignatureScheme.

Definition at line 975 of file pubkey.h.

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

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

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

Definition at line 623 of file cryptlib.cpp.

References PK_Signer::SignAndRestart().

Referenced by SignerFilter::Put2().

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

sign a message

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

Definition at line 629 of file cryptlib.cpp.

References PK_Signer::NewSignatureAccumulator(), and PK_Signer::SignAndRestart().

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

sign a recoverable message

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

Definition at line 636 of file cryptlib.cpp.

References PK_Signer::NewSignatureAccumulator(), and PK_Signer::SignAndRestart().


The documentation for this class was generated from the following file:
Generated on Sat Dec 23 02:07:21 2006 for Crypto++ by  doxygen 1.5.1-p1