Crypto++  5.6.3
Free C++ class library of cryptographic schemes
Public Member Functions | List of all members
DL_VerifierBase< T > Class Template Referenceabstract

_ More...

+ Inheritance diagram for DL_VerifierBase< T >:

Public Member Functions

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 PK_MessageAccumulatorNewVerificationAccumulator () const =0
 create a new HashTransformation to accumulate the message to be verified
 
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 PublicKeyAccessPublicKey ()=0
 
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 std::string AlgorithmName () const
 Provides the name of this algorithm. More...
 
virtual ClonableClone () const
 Copies this object. More...
 

Detailed Description

template<class T>
class DL_VerifierBase< T >

_

Definition at line 1330 of file pubkey.h.

Member Function Documentation

template<class T>
DecodingResult DL_VerifierBase< T >::RecoverAndRestart ( byte *  recoveredMessage,
PK_MessageAccumulator messageAccumulator 
) const
inlinevirtual

recover a message from its signature

Precondition
size of recoveredMessage == MaxRecoverableLengthFromSignatureLength(signatureLength)

Implements PK_Verifier.

Definition at line 1367 of file pubkey.h.

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 std::string Algorithm::AlgorithmName ( ) const
inlinevirtualinherited

Provides the name of this algorithm.

Returns
the standard algorithm name

The standard algorithm name can be a name like AES or AES/GCM. Some algorithms do not have standard names yet. For example, there is no standard algorithm name for Shoup's ECIES.

Note
AlgorithmName is not universally implemented yet

Reimplemented in AuthenticatedSymmetricCipher, SignatureVerificationFilter, SignerFilter, AuthenticatedDecryptionFilter, HashVerificationFilter, HashFilter, StreamTransformationFilter, ClassNullRNG, BitBucket, RDSEED, DH_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, HMAC< T >, RDRAND, CRC32, GCM_Base, Adler32, EAX_Base, CCM_Base, SHA3, and VMAC_Base.

Definition at line 488 of file cryptlib.h.

Referenced by VariableRounds< 6, 2 >::StaticGetDefaultRounds().

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: