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#include <pubkey.h>
Public Member Functions | |
void | InputSignature (PK_MessageAccumulator &messageAccumulator, const byte *signature, size_t signatureLength) const |
bool | VerifyAndRestart (PK_MessageAccumulator &messageAccumulator) const |
DecodingResult | RecoverAndRestart (byte *recoveredMessage, PK_MessageAccumulator &messageAccumulator) const |
size_t | SignatureLength () const |
virtual size_t | SignatureLength () const =0 |
signature length if it only depends on the key, otherwise 0 | |
size_t | MaxRecoverableLength () const |
virtual size_t | MaxRecoverableLength () const =0 |
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 |
virtual size_t | MaxRecoverableLengthFromSignatureLength (size_t signatureLength) const =0 |
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 |
virtual bool | IsProbabilistic () const =0 |
requires a random number generator to sign | |
bool | AllowNonrecoverablePart () const |
virtual bool | AllowNonrecoverablePart () const =0 |
whether or not a non-recoverable message part can be signed | |
bool | RecoverablePartFirst () const |
virtual bool | RecoverablePartFirst () const =0 |
whether you must input the recoverable part before the non-recoverable part during signing | |
virtual PK_MessageAccumulator * | NewVerificationAccumulator () const =0 |
create a new HashTransformation to accumulate the message to be verified | |
virtual void | InputSignature (PK_MessageAccumulator &messageAccumulator, const byte *signature, size_t signatureLength) const =0 |
input signature into a message accumulator | |
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 | VerifyAndRestart (PK_MessageAccumulator &messageAccumulator) const =0 |
check whether messageAccumulator contains a valid signature and message, and restart messageAccumulator | |
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 | |
virtual DecodingResult | RecoverAndRestart (byte *recoveredMessage, PK_MessageAccumulator &messageAccumulator) const =0 |
recover a message from its signature | |
virtual DecodingResult | RecoverMessage (byte *recoveredMessage, const byte *nonrecoverableMessage, size_t nonrecoverableMessageLength, const byte *signature, size_t signatureLength) const |
recover a message from its signature | |
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 | |
virtual PublicKey & | AccessPublicKey ()=0 |
virtual const PublicKey & | GetPublicKey () 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 Clonable * | Clone () const |
this is not implemented by most classes yet | |
Protected Types | |
typedef DL_PublicKey< T > | KeyInterface |
typedef DL_PublicKey< T >::Element | Element |
Protected Member Functions | |
size_t | MessageRepresentativeLength () const |
size_t | MessageRepresentativeBitLength () const |
virtual const DL_ElgamalLikeSignatureAlgorithm < typename DL_PublicKey< T > ::Element > & | GetSignatureAlgorithm () const =0 |
virtual const PK_SignatureMessageEncodingMethod & | GetMessageEncodingInterface () const =0 |
virtual HashIdentifier | GetHashIdentifier () const =0 |
virtual size_t | GetDigestSize () const =0 |
const DL_GroupParameters < Element > & | GetAbstractGroupParameters () const |
DL_GroupParameters< Element > & | AccessAbstractGroupParameters () |
virtual KeyInterface & | AccessKeyInterface ()=0 |
virtual const KeyInterface & | GetKeyInterface () const =0 |
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Definition at line 1083 of file pubkey.h.
virtual bool PK_SignatureScheme::IsProbabilistic | ( | ) | const [pure virtual, inherited] |
requires a random number generator to sign
if this returns false, NullRNG() can be passed to functions that take RandomNumberGenerator &
DecodingResult PK_Verifier::Recover | ( | byte * | recoveredMessage, | |
PK_MessageAccumulator * | messageAccumulator | |||
) | const [virtual, inherited] |
recover a message from its signature
Definition at line 792 of file cryptlib.cpp.
References PK_Verifier::RecoverAndRestart().
virtual DecodingResult PK_Verifier::RecoverAndRestart | ( | byte * | recoveredMessage, | |
PK_MessageAccumulator & | messageAccumulator | |||
) | const [pure virtual, inherited] |
recover a message from its signature
Referenced by PK_Verifier::Recover(), and PK_Verifier::RecoverMessage().
DecodingResult PK_Verifier::RecoverMessage | ( | byte * | recoveredMessage, | |
const byte * | nonrecoverableMessage, | |||
size_t | nonrecoverableMessageLength, | |||
const byte * | signature, | |||
size_t | signatureLength | |||
) | const [virtual, inherited] |
recover a message from its signature
Definition at line 798 of file cryptlib.cpp.
References PK_Verifier::InputSignature(), PK_Verifier::NewVerificationAccumulator(), and PK_Verifier::RecoverAndRestart().