TF_EncryptorBase Class Reference

#include <pubkey.h>

Inheritance diagram for TF_EncryptorBase:

TF_CryptoSystemBase< PK_Encryptor, TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > > PK_FixedLengthCryptoSystemImpl< PK_Encryptor > TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > PK_Encryptor PK_CryptoSystem PublicKeyAlgorithm AsymmetricAlgorithm Algorithm Clonable AlgorithmImpl< TF_EncryptorBase, SCHEME_OPTIONS::AlgorithmInfo > TF_ObjectImplBase< TF_EncryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey > TF_ObjectImpl< TF_EncryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey > TF_EncryptorImpl< SCHEME_OPTIONS > List of all members.

Detailed Description

_

Definition at line 173 of file pubkey.h.

Public Member Functions

void Encrypt (RandomNumberGenerator &rng, const byte *plaintext, size_t plaintextLength, byte *ciphertext, const NameValuePairs &parameters=g_nullNameValuePairs) const
 encrypt a byte string
bool ParameterSupported (const char *name) const
 this object supports the use of the parameter with the given name
size_t FixedMaxPlaintextLength () const
 return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0
size_t FixedCiphertextLength () const
 return fixed ciphertext length, if one exists, otherwise return 0
size_t MaxPlaintextLength (size_t ciphertextLength) const
 maximum length of plaintext for a given ciphertext length
size_t CiphertextLength (size_t plaintextLength) const
 calculate length of ciphertext given length of plaintext
virtual BufferedTransformationCreateEncryptionFilter (RandomNumberGenerator &rng, BufferedTransformation *attachment=NULL, const NameValuePairs &parameters=g_nullNameValuePairs) const
 create a new encryption filter
CryptoMaterialAccessMaterial ()
 returns a reference to the crypto material used by this object
const CryptoMaterialGetMaterial () const
 returns a const reference to the crypto material used by this object
virtual PublicKeyAccessPublicKey ()=0
virtual const PublicKeyGetPublicKey () 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 ClonableClone () const
 this is not implemented by most classes yet

Protected Types

typedef RandomizedTrapdoorFunction TrapdoorFunctionInterface
typedef PK_EncryptionMessageEncodingMethod MessageEncodingInterface

Protected Member Functions

size_t PaddedBlockByteLength () const
size_t PaddedBlockBitLength () const
virtual const TrapdoorFunctionBoundsGetTrapdoorFunctionBounds () const=0
virtual const TrapdoorFunctionInterfaceGetTrapdoorFunctionInterface () const=0
virtual const MessageEncodingInterfaceGetMessageEncodingInterface () const=0


Member Function Documentation

void TF_EncryptorBase::Encrypt ( RandomNumberGenerator rng,
const byte *  plaintext,
size_t  plaintextLength,
byte *  ciphertext,
const NameValuePairs parameters = g_nullNameValuePairs 
) const [virtual]

encrypt a byte string

Precondition:
CiphertextLength(plaintextLength) != 0 (i.e., plaintext isn't too long)

size of ciphertext == CiphertextLength(plaintextLength)

Implements PK_Encryptor.

Definition at line 145 of file pubkey.cpp.

References Algorithm::AlgorithmName(), RandomizedTrapdoorFunction::ApplyRandomizedFunction(), Integer::Encode(), TF_CryptoSystemBase< PK_Encryptor, TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >::FixedCiphertextLength(), TF_CryptoSystemBase< PK_Encryptor, TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >::FixedMaxPlaintextLength(), PK_EncryptionMessageEncodingMethod::Pad(), TF_CryptoSystemBase< PK_Encryptor, TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >::PaddedBlockBitLength(), TF_CryptoSystemBase< PK_Encryptor, TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >::PaddedBlockByteLength(), and SecBlock< T, A >::size().

bool TF_CryptoSystemBase< PK_Encryptor , TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >::ParameterSupported ( const char *  name  )  const [inline, virtual, inherited]

Implements PK_CryptoSystem.

Definition at line 156 of file pubkey.h.

size_t TF_CryptoSystemBase< PK_Encryptor , TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >::FixedCiphertextLength (  )  const [inline, virtual, inherited]

Implements PK_FixedLengthCryptoSystemImpl< PK_Encryptor >.

Definition at line 158 of file pubkey.h.

Referenced by Encrypt().

size_t PK_FixedLengthCryptoSystemImpl< PK_Encryptor >::MaxPlaintextLength ( size_t  ciphertextLength  )  const [inline, virtual, inherited]

Implements PK_CryptoSystem.

Definition at line 142 of file pubkey.h.

size_t PK_FixedLengthCryptoSystemImpl< PK_Encryptor >::CiphertextLength ( size_t  plaintextLength  )  const [inline, virtual, inherited]

Implements PK_CryptoSystem.

Definition at line 144 of file pubkey.h.

BufferedTransformation * PK_Encryptor::CreateEncryptionFilter ( RandomNumberGenerator rng,
BufferedTransformation attachment = NULL,
const NameValuePairs parameters = g_nullNameValuePairs 
) const [virtual, inherited]

create a new encryption filter

Note:
The caller is responsible for deleting the returned pointer.

Encoding parameters should be passed in the "EP" channel.

Definition at line 570 of file cryptlib.cpp.


The documentation for this class was generated from the following files:
Generated on Sat Dec 23 02:07:36 2006 for Crypto++ by  doxygen 1.5.1-p1