DL_DecryptorBase< T > Class Template Reference

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#include <pubkey.h>

Inheritance diagram for DL_DecryptorBase< T >:

Public Types
typedef T	Element

Public Member Functions
DecodingResult	Decrypt (RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const
	decrypt a byte string, and return the length of plaintext More...
size_t	MaxPlaintextLength (size_t ciphertextLength) const
size_t	CiphertextLength (size_t plaintextLength) const
bool	ParameterSupported (const char *name) const
virtual BufferedTransformation *	CreateDecryptionFilter (RandomNumberGenerator &rng, BufferedTransformation *attachment=NULL, const NameValuePairs &parameters=g_nullNameValuePairs) const
	create a new decryption filter More...
DecodingResult	FixedLengthDecrypt (RandomNumberGenerator &rng, const byte *ciphertext, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const
	decrypt a fixed size ciphertext
virtual size_t	FixedCiphertextLength () const
	return fixed ciphertext length, if one exists, otherwise return 0 More...
virtual size_t	FixedMaxPlaintextLength () const
	return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0
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 DL_PrivateKey< T >	KeyInterface

Protected Member Functions
virtual const DL_KeyAgreementAlgorithm< Element > &	GetKeyAgreementAlgorithm () const =0
virtual const DL_KeyDerivationAlgorithm< Element > &	GetKeyDerivationAlgorithm () const =0
virtual const DL_SymmetricEncryptionAlgorithm &	GetSymmetricEncryptionAlgorithm () const =0
const DL_GroupParameters< Element > &	GetAbstractGroupParameters () const
DL_GroupParameters< Element > &	AccessAbstractGroupParameters ()
virtual KeyInterface &	AccessKeyInterface ()=0
virtual const KeyInterface &	GetKeyInterface () const =0

Detailed Description

template<class T>
class DL_DecryptorBase< T >

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Definition at line 1179 of file pubkey.h.

Member Function Documentation

template<class T>

DecodingResult DL_DecryptorBase< T >::Decrypt ( RandomNumberGenerator &  rng, const byte *  ciphertext, size_t  ciphertextLength, byte *  plaintext, const NameValuePairs &  parameters = g_nullNameValuePairs  ) const

inlinevirtual

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.

Implements PK_Decryptor.

Definition at line 1184 of file pubkey.h.

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

virtualinherited

create a new decryption filter

Note

caller is responsible for deleting the returned pointer

virtual size_t PK_CryptoSystem::FixedCiphertextLength ( ) const

inlinevirtualinherited

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 1211 of file cryptlib.h.

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

• pubkey.h