Crypto++
Public Member Functions | Protected Types | Protected Member Functions | List of all members
TF_DecryptorBase Class Referenceabstract

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#include <pubkey.h>

Inheritance diagram for TF_DecryptorBase:
TF_CryptoSystemBase< PK_Decryptor, TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > > PK_FixedLengthCryptoSystemImpl< PK_Decryptor > TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > PK_Decryptor PK_CryptoSystem PrivateKeyAlgorithm AsymmetricAlgorithm Algorithm Clonable AlgorithmImpl< TF_DecryptorBase, SCHEME_OPTIONS::AlgorithmInfo > TF_ObjectImplBase< TF_DecryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > TF_ObjectImpl< TF_DecryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > TF_DecryptorImpl< SCHEME_OPTIONS >

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...
 
bool ParameterSupported (const char *name) const
 
size_t FixedMaxPlaintextLength () const
 
size_t FixedCiphertextLength () const
 
size_t MaxPlaintextLength (size_t ciphertextLength) const
 
size_t CiphertextLength (size_t plaintextLength) 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
 
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

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Definition at line 166 of file pubkey.h.

Member Function Documentation

DecodingResult TF_DecryptorBase::Decrypt ( RandomNumberGenerator &  rng,
const byte *  ciphertext,
size_t  ciphertextLength,
byte *  plaintext,
const NameValuePairs &  parameters = g_nullNameValuePairs 
) const
virtual

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.

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

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