#include <pubkey.h>

Inheritance diagram for TF_DecryptorBase:

Public Member Functions
DecodingResult	Decrypt (RandomNumberGenerator &rng, const byte ciphertext, size_t ciphertextLength, byte plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const
bool	ParameterSupported (const char *name) const
virtual bool	ParameterSupported (const char *name) const =0
	this object supports the use of the parameter with the given name
size_t	FixedMaxPlaintextLength () const
virtual size_t	FixedMaxPlaintextLength () const =0
virtual size_t	FixedMaxPlaintextLength () const
	return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0
size_t	FixedCiphertextLength () const
virtual size_t	FixedCiphertextLength () const =0
virtual size_t	FixedCiphertextLength () const
	return fixed ciphertext length, if one exists, otherwise return 0
size_t	MaxPlaintextLength (size_t ciphertextLength) const
virtual size_t	MaxPlaintextLength (size_t ciphertextLength) const =0
	maximum length of plaintext for a given ciphertext length
size_t	CiphertextLength (size_t plaintextLength) const
virtual size_t	CiphertextLength (size_t plaintextLength) const =0
	calculate length of ciphertext given length of plaintext
virtual DecodingResult	Decrypt (RandomNumberGenerator &rng, const byte ciphertext, size_t ciphertextLength, byte plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const =0
	decrypt a byte string, and return the length of plaintext
virtual BufferedTransformation *	CreateDecryptionFilter (RandomNumberGenerator &rng, BufferedTransformation *attachment=NULL, const NameValuePairs &parameters=g_nullNameValuePairs) const
	create a new decryption filter
DecodingResult	FixedLengthDecrypt (RandomNumberGenerator &rng, const byte ciphertext, byte plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const
	decrypt a fixed size ciphertext
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 PrivateKey &	AccessPrivateKey ()=0
virtual const PrivateKey &	GetPrivateKey () 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 TrapdoorFunctionInverse	TrapdoorFunctionInterface
typedef PK_EncryptionMessageEncodingMethod	MessageEncodingInterface
Protected Member Functions
size_t	PaddedBlockByteLength () const
size_t	PaddedBlockBitLength () const
virtual const TrapdoorFunctionBounds &	GetTrapdoorFunctionBounds () const =0
virtual const TrapdoorFunctionInterface &	GetTrapdoorFunctionInterface () const =0
virtual const MessageEncodingInterface &	GetMessageEncodingInterface () const =0

Detailed Description

_

Definition at line 166 of file pubkey.h.

Member Function Documentation

virtual bool PK_CryptoSystem::ParameterSupported ( const char * name ) const [pure virtual, inherited]

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, inherited]

return fixed ciphertext length, if one exists, otherwise return 0

Note:: "Fixed" here means length of ciphertext does not depend on length of plaintext. It usually does depend on the key length.

Definition at line 1212 of file cryptlib.h.

Referenced by PK_Decryptor::FixedLengthDecrypt().

virtual size_t PK_CryptoSystem::MaxPlaintextLength ( size_t ciphertextLength ) const [pure virtual, inherited]

maximum length of plaintext for a given ciphertext length

Note:: This function returns 0 if ciphertextLength is not valid (too long or too short).

virtual size_t PK_CryptoSystem::CiphertextLength ( size_t plaintextLength ) const [pure virtual, inherited]

calculate length of ciphertext given length of plaintext

Note:: This function returns 0 if plaintextLength is not valid (too long).

virtual DecodingResult PK_Decryptor::Decrypt	(	RandomNumberGenerator &	rng,
		const byte *	ciphertext,
		size_t	ciphertextLength,
		byte *	plaintext,
		const NameValuePairs &	parameters = `g_nullNameValuePairs`
	)			const `[pure virtual, inherited]`

decrypt a byte string, and return the length of plaintext

Precondition:: size of plaintext == MaxPlaintextLength(ciphertextLength) bytes.

Returns:: the actual length of the plaintext, indication that decryption failed.

BufferedTransformation * PK_Decryptor::CreateDecryptionFilter	(	RandomNumberGenerator &	rng,
		BufferedTransformation *	attachment = `NULL`,
		const NameValuePairs &	parameters = `g_nullNameValuePairs`
	)			const `[virtual, inherited]`

create a new decryption filter

Note:: caller is responsible for deleting the returned pointer

Definition at line 751 of file cryptlib.cpp.

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

TF_DecryptorBase Class Reference

Public Member Functions

Protected Types

Protected Member Functions

Detailed Description

Member Function Documentation