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DL_EncryptorImpl< SCHEME_OPTIONS > Class Template Reference

#include <pubkey.h>

Inheritance diagram for DL_EncryptorImpl< SCHEME_OPTIONS >:

DL_PublicObjectImpl< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS > DL_ObjectImpl< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey > PublicKeyCopier< SCHEME_OPTIONS > DL_ObjectImplBase< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey > AlgorithmImpl< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS::AlgorithmInfo > DL_EncryptorBase< SCHEME_OPTIONS::Element > DL_CryptoSystemBase< PK_Encryptor, DL_PublicKey< SCHEME_OPTIONS::Element > > PK_Encryptor DL_Base< DL_PublicKey< SCHEME_OPTIONS::Element > > PK_CryptoSystem PublicKeyAlgorithm AsymmetricAlgorithm Algorithm Clonable List of all members.

Detailed Description

template<class SCHEME_OPTIONS>
class DL_EncryptorImpl< SCHEME_OPTIONS >

_

Definition at line 1386 of file pubkey.h.

Public Types

typedef SCHEME_OPTIONS::PublicKey::Element Element
typedef SCHEME_OPTIONS SchemeOptions
typedef SCHEME_OPTIONS::PublicKey KeyClass

Public Member Functions

void CopyKeyInto (typename SCHEME_OPTIONS::PublicKey &key) const
PrivateKeyAccessPrivateKey ()
PublicKeyAccessPublicKey ()
const SCHEME_OPTIONS::PublicKey & GetKey () const
SCHEME_OPTIONS::PublicKey & AccessKey ()
std::string AlgorithmName () const
 returns name of this algorithm, not universally implemented yet
void Encrypt (RandomNumberGenerator &rng, const byte *plaintext, unsigned int plaintextLength, byte *ciphertext, const NameValuePairs &parameters=g_nullNameValuePairs) const
 encrypt a byte string
unsigned int MaxPlaintextLength (unsigned int ciphertextLength) const
 maximum length of plaintext for a given ciphertext length
unsigned int CiphertextLength (unsigned int plaintextLength) const
 calculate length of ciphertext given length of plaintext
bool ParameterSupported (const char *name) const
 this object supports the use of the parameter with the given name
virtual BufferedTransformationCreateEncryptionFilter (RandomNumberGenerator &rng, BufferedTransformation *attachment=NULL, const NameValuePairs &parameters=g_nullNameValuePairs) const
 create a new encryption filter
virtual unsigned int FixedCiphertextLength () const
 return fixed ciphertext length, if one exists, otherwise return 0
virtual unsigned int FixedMaxPlaintextLength () const
 return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0
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 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 ClonableClone () const
 this is not implemented by most classes yet

Static Public Member Functions

std::string StaticAlgorithmName ()

Protected Types

typedef DL_PublicKey< SCHEME_OPTIONS::Element > KeyInterface

Protected Member Functions

const DL_ElgamalLikeSignatureAlgorithm<
Element > & 
GetSignatureAlgorithm () const
const DL_KeyAgreementAlgorithm<
Element > & 
GetKeyAgreementAlgorithm () const
const DL_KeyDerivationAlgorithm<
Element > & 
GetKeyDerivationAlgorithm () const
const DL_SymmetricEncryptionAlgorithmGetSymmetricEncryptionAlgorithm () const
HashIdentifier GetHashIdentifier () const
const PK_SignatureMessageEncodingMethodGetMessageEncodingInterface () const
DL_EncryptorBase< SCHEME_OPTIONS::Element
>::KeyInterface & 
AccessKeyInterface ()
const DL_EncryptorBase< SCHEME_OPTIONS::Element
>::KeyInterface & 
GetKeyInterface () const
unsigned int GetDigestSize () const
const DL_GroupParameters<
Element > & 
GetAbstractGroupParameters () const
DL_GroupParameters< Element > & AccessAbstractGroupParameters ()


Member Function Documentation

void DL_EncryptorBase< SCHEME_OPTIONS::Element >::Encrypt RandomNumberGenerator rng,
const byte *  plaintext,
unsigned int  plaintextLength,
byte *  ciphertext,
const NameValuePairs parameters = g_nullNameValuePairs
const [inline, virtual, inherited]
 

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 1224 of file pubkey.h.

References DL_KeyAgreementAlgorithm< T >::AgreeWithEphemeralPrivateKey(), DL_KeyDerivationAlgorithm< T >::Derive(), DL_GroupParameters< T >::EncodeElement(), DL_GroupParameters< T >::ExponentiateBase(), DL_GroupParameters< T >::GetEncodedElementSize(), DL_GroupParameters< T >::GetMaxExponent(), DL_PublicKey< T >::GetPublicPrecomputation(), DL_SymmetricEncryptionAlgorithm::GetSymmetricKeyLength(), and DL_SymmetricEncryptionAlgorithm::SymmetricEncrypt().

unsigned int DL_CryptoSystemBase< PK_Encryptor , DL_PublicKey< SCHEME_OPTIONS::Element > >::MaxPlaintextLength unsigned int  ciphertextLength  )  const [inline, virtual, inherited]
 

Implements PK_CryptoSystem.

Definition at line 1160 of file pubkey.h.

unsigned int DL_CryptoSystemBase< PK_Encryptor , DL_PublicKey< SCHEME_OPTIONS::Element > >::CiphertextLength unsigned int  plaintextLength  )  const [inline, virtual, inherited]
 

Implements PK_CryptoSystem.

Definition at line 1166 of file pubkey.h.

bool DL_CryptoSystemBase< PK_Encryptor , DL_PublicKey< SCHEME_OPTIONS::Element > >::ParameterSupported const char *  name  )  const [inline, virtual, inherited]
 

Implements PK_CryptoSystem.

Definition at line 1172 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 564 of file cryptlib.cpp.

virtual unsigned int 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 1129 of file cryptlib.h.

Referenced by TF_DecryptorBase::Decrypt(), and TF_EncryptorBase::Encrypt().


The documentation for this class was generated from the following file:
Generated on Wed Jul 21 19:15:46 2004 for Crypto++ by doxygen 1.3.7-20040704