PK_SignatureScheme Class Reference
#include <cryptlib.h>
Inheritance diagram for PK_SignatureScheme:
Detailed Description
interface for public-key signers and verifiersThis class provides an interface common to signers and verifiers for querying scheme properties.
Definition at line 1298 of file cryptlib.h.
Public Member Functions | |
| virtual size_t | SignatureLength () const =0 |
| signature length if it only depends on the key, otherwise 0 | |
| virtual size_t | MaxSignatureLength (size_t recoverablePartLength=0) const |
| maximum signature length produced for a given length of recoverable message part | |
| 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 | |
| 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 | |
| virtual bool | IsProbabilistic () const =0 |
| requires a random number generator to sign | |
| virtual bool | AllowNonrecoverablePart () const =0 |
| whether or not a non-recoverable message part can be signed | |
| 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 */ | |
| virtual bool | RecoverablePartFirst () const =0 |
| whether you must input the recoverable part before the non-recoverable part during signing | |
Classes | |
| class | InvalidKeyLength |
| invalid key exception, may be thrown by any function in this class if the private or public key has a length that can't be used More... | |
| class | KeyTooShort |
| key too short exception, may be thrown by any function in this class if the private or public key is too short to sign or verify anything More... | |
Member Function Documentation
| virtual bool PK_SignatureScheme::IsProbabilistic | ( | ) | const [pure virtual] |
requires a random number generator to sign
if this returns false, NullRNG() can be passed to functions that take RandomNumberGenerator &
The documentation for this class was generated from the following file:
