Crypto++  5.6.3
Free C++ class library of cryptographic schemes
Public Types | Public Member Functions | Static Public Member Functions | List of all members
DL_VerifierImpl< SCHEME_OPTIONS > Class Template Reference

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+ Inheritance diagram for DL_VerifierImpl< SCHEME_OPTIONS >:

Public Types

typedef SCHEME_OPTIONS::PublicKey::Element Element
 
typedef SCHEME_OPTIONS SchemeOptions
 

Public Member Functions

PK_MessageAccumulatorNewVerificationAccumulator () const
 create a new HashTransformation to accumulate the message to be verified
 
PrivateKeyAccessPrivateKey ()
 
PublicKeyAccessPublicKey ()
 
const SCHEME_OPTIONS::PublicKey & GetKey () const
 
SCHEME_OPTIONS::PublicKey & AccessKey ()
 
std::string AlgorithmName () const
 
void InputSignature (PK_MessageAccumulator &messageAccumulator, const byte *signature, size_t signatureLength) const
 input signature into a message accumulator
 
bool VerifyAndRestart (PK_MessageAccumulator &messageAccumulator) const
 check whether messageAccumulator contains a valid signature and message, and restart messageAccumulator
 
DecodingResult RecoverAndRestart (byte *recoveredMessage, PK_MessageAccumulator &messageAccumulator) const
 recover a message from its signature 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 bool Verify (PK_MessageAccumulator *messageAccumulator) const
 check whether messageAccumulator contains a valid signature and message, and delete messageAccumulator (even in case of exception thrown)
 
virtual bool VerifyMessage (const byte *message, size_t messageLen, const byte *signature, size_t signatureLength) const
 check whether input signature is a valid signature for input message
 
virtual DecodingResult Recover (byte *recoveredMessage, PK_MessageAccumulator *messageAccumulator) const
 recover a message from its signature More...
 
virtual DecodingResult RecoverMessage (byte *recoveredMessage, const byte *nonrecoverableMessage, size_t nonrecoverableMessageLength, const byte *signature, size_t signatureLength) const
 recover a message from its signature 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 const PublicKeyGetPublicKey () 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
 Copies this object. More...
 

Static Public Member Functions

static std::string StaticAlgorithmName ()
 

Detailed Description

template<class SCHEME_OPTIONS>
class DL_VerifierImpl< SCHEME_OPTIONS >

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Definition at line 1624 of file pubkey.h.

Member Function Documentation

DecodingResult DL_VerifierBase< SCHEME_OPTIONS::Element >::RecoverAndRestart ( byte *  recoveredMessage,
PK_MessageAccumulator messageAccumulator 
) const
inlinevirtualinherited

recover a message from its signature

Precondition
size of recoveredMessage == MaxRecoverableLengthFromSignatureLength(signatureLength)

Implements PK_Verifier.

Definition at line 1367 of file pubkey.h.

References Integer::Encode(), SecBlock< T, A >::New(), NullRNG(), and SecBlock< T, A >::size().

DecodingResult PK_Verifier::Recover ( byte *  recoveredMessage,
PK_MessageAccumulator messageAccumulator 
) const
virtualinherited

recover a message from its signature

Precondition
size of recoveredMessage == MaxRecoverableLengthFromSignatureLength(signatureLength)

Definition at line 905 of file cryptlib.cpp.

DecodingResult PK_Verifier::RecoverMessage ( byte *  recoveredMessage,
const byte *  nonrecoverableMessage,
size_t  nonrecoverableMessageLength,
const byte *  signature,
size_t  signatureLength 
) const
virtualinherited

recover a message from its signature

Precondition
size of recoveredMessage == MaxRecoverableLengthFromSignatureLength(signatureLength)

Definition at line 911 of file cryptlib.cpp.

References HashTransformation::Update().

Referenced by FixedRNG::GenerateBlock().

virtual Clonable* Clonable::Clone ( ) const
inlinevirtualinherited

Copies this object.

Returns
a copy of this object
Exceptions
NotImplemented
Note
this is not implemented by most classes
See also
NotCopyable

Definition at line 464 of file cryptlib.h.


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