interface for public-key encryptors and decryptors More...
#include <cryptlib.h>
Public Member Functions | |
virtual size_t | MaxPlaintextLength (size_t ciphertextLength) const =0 |
maximum length of plaintext for a given ciphertext length | |
virtual size_t | CiphertextLength (size_t plaintextLength) const =0 |
calculate length of ciphertext given length of plaintext | |
virtual bool | ParameterSupported (const char *name) const =0 |
this object supports the use of the parameter with the given name | |
virtual size_t | FixedCiphertextLength () const |
return fixed ciphertext length, if one exists, otherwise return 0 | |
virtual size_t | FixedMaxPlaintextLength () const |
return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0 |
interface for public-key encryptors and decryptors
This class provides an interface common to encryptors and decryptors for querying their plaintext and ciphertext lengths.
Definition at line 1192 of file cryptlib.h.
virtual size_t PK_CryptoSystem::MaxPlaintextLength | ( | size_t | ciphertextLength | ) | const [pure virtual] |
maximum length of plaintext for a given ciphertext length
virtual size_t PK_CryptoSystem::CiphertextLength | ( | size_t | plaintextLength | ) | const [pure virtual] |
calculate length of ciphertext given length of plaintext
virtual bool PK_CryptoSystem::ParameterSupported | ( | const char * | name | ) | const [pure virtual] |
this object supports the use of the parameter with the given name
some possible parameter names: EncodingParameters, KeyDerivationParameters
virtual size_t PK_CryptoSystem::FixedCiphertextLength | ( | ) | const [inline, virtual] |
return fixed ciphertext length, if one exists, otherwise return 0
Definition at line 1212 of file cryptlib.h.
Referenced by PK_Decryptor::FixedLengthDecrypt().