TF_DecryptorImpl< SCHEME_OPTIONS > Class Template Reference

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Inheritance diagram for TF_DecryptorImpl< SCHEME_OPTIONS >:
TF_ObjectImpl< TF_DecryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > TF_ObjectImplBase< TF_DecryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey > AlgorithmImpl< TF_DecryptorBase, SCHEME_OPTIONS::AlgorithmInfo > 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

List of all members.

Public Types

typedef SCHEME_OPTIONS::PrivateKey KeyClass
typedef SCHEME_OPTIONS SchemeOptions

Public Member Functions

const KeyClass & GetKey () const
KeyClass & AccessKey ()
PublicKeyAccessPublicKey ()
const PublicKeyGetPublicKey () const
PrivateKeyAccessPrivateKey ()
const PrivateKeyGetPrivateKey () const
const KeyClass & GetTrapdoorFunction () const
PK_MessageAccumulatorNewSignatureAccumulator (RandomNumberGenerator &rng) const
PK_MessageAccumulatorNewVerificationAccumulator () const
std::string AlgorithmName () const
 Provides the name of this algorithm.
DecodingResult Decrypt (RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const
 Decrypt 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 BufferedTransformationCreateDecryptionFilter (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
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
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
 Copies this object.

Static Public Member Functions

static std::string StaticAlgorithmName ()

Detailed Description

template<class SCHEME_OPTIONS>
class TF_DecryptorImpl< SCHEME_OPTIONS >

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Definition at line 652 of file pubkey.h.


Member Function Documentation

std::string AlgorithmImpl< TF_DecryptorBase , SCHEME_OPTIONS::AlgorithmInfo >::AlgorithmName (  )  const [inline, virtual, inherited]

Reimplemented from Algorithm.

Definition at line 42 of file simple.h.

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

Decrypt a byte string.

Parameters:
rng a RandomNumberGenerator derived class
ciphertext the encrypted byte buffer
ciphertextLength the size of the encrypted byte buffer
plaintext a byte buffer to hold the decrypted string
parameters additional configuration options
Returns:
the result of the decryption operation
Precondition:
COUNTOF(plaintext) == MaxPlaintextLength(ciphertextLength) ensures the output byte buffer is large enough

If DecodingResult::isValidCoding is true, then DecodingResult::messageLength is valid and holds the the actual length of the plaintext recovered. on success. The result is undefined if decryption failed. If DecodingResult::isValidCoding is false, then DecodingResult::messageLength is undefined.

See also:
PK_Encryptor

Implements PK_Decryptor.

Definition at line 140 of file pubkey.cpp.

References Algorithm::AlgorithmName(), Integer::ByteCount(), Integer::Encode(), IntToString(), SecBlock< T, A >::size(), and Integer::Zero().

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

Implements PK_CryptoSystem.

Definition at line 280 of file pubkey.h.

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

Implements PK_FixedLengthCryptoSystemImpl< PK_Decryptor >.

Definition at line 282 of file pubkey.h.

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

Implements PK_CryptoSystem.

Definition at line 259 of file pubkey.h.

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

Implements PK_CryptoSystem.

Definition at line 261 of file pubkey.h.

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 864 of file cryptlib.cpp.

virtual Clonable* Clonable::Clone (  )  const [inline, virtual, inherited]

Copies this object.

Returns:
a copy of this object
Exceptions:
NotImplemented 
Note:
this is not implemented by most classes
See also:
NotCopyable

Definition at line 464 of file cryptlib.h.


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

Generated on 24 Mar 2016 for Crypto++ by  doxygen 1.6.1