TF_DecryptorImpl< SCHEME_OPTIONS > Class Template Reference

#include <pubkey.h>

Inheritance diagram for TF_DecryptorImpl< SCHEME_OPTIONS >:

List of all members.

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Detailed Description

template<class SCHEME_OPTIONS>
class TF_DecryptorImpl< SCHEME_OPTIONS >

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Definition at line 471 of file pubkey.h.

Public Types
typedef PrivateKeyCopier< SCHEME_OPTIONS::Keys >::KeyClass	KeyClass
typedef SCHEME_OPTIONS	SchemeOptions
Public Member Functions
const KeyClass &	GetKey () const
KeyClass &	AccessKey ()
void	CopyKeyInto (typename SCHEME_OPTIONS::PrivateKey &key) const
void	CopyKeyInto (typename SCHEME_OPTIONS::PublicKey &key) const
virtual void	CopyKeyInto (typename SCHEME_OPTIONS::Keys::PublicKey &key) const =0
virtual void	CopyKeyInto (typename SCHEME_OPTIONS::Keys::PrivateKey &key) const =0
PublicKey &	AccessPublicKey ()
const PublicKey &	GetPublicKey () const
PrivateKey &	AccessPrivateKey ()
const PrivateKey &	GetPrivateKey () const
const KeyClass &	GetTrapdoorFunction () const
PK_MessageAccumulator *	NewSignatureAccumulator (RandomNumberGenerator &rng) const
PK_MessageAccumulator *	NewVerificationAccumulator () const
std::string	AlgorithmName () const
	returns name of this algorithm, not universally implemented yet
DecodingResult	Decrypt (RandomNumberGenerator &rng, const byte *ciphertext, unsigned int ciphertextLength, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const
	decrypt a byte string, and return the length of plaintext
bool	ParameterSupported (const char *name) const
	this object supports the use of the parameter with the given name
unsigned int	FixedMaxPlaintextLength () const
	return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0
unsigned int	FixedCiphertextLength () const
	return fixed ciphertext length, if one exists, otherwise return 0
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
virtual BufferedTransformation *	CreateDecryptionFilter (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
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
void	BERDecode (BufferedTransformation &bt)
	for backwards compatibility, calls AccessMaterial().Load(bt)
void	DEREncode (BufferedTransformation &bt) const
	for backwards compatibility, calls GetMaterial().Save(bt)
virtual Clonable *	Clone () const
	this is not implemented by most classes yet
Static Public Member Functions
static std::string	StaticAlgorithmName ()
Protected Types
typedef TrapdoorFunctionInverse	TrapdoorFunctionInterface
typedef PK_EncryptionMessageEncodingMethod	MessageEncodingInterface
Protected Member Functions
const TwoBases< TF_DecryptorBase, PrivateKeyCopier< SCHEME_OPTIONS::Keys > >::MessageEncodingInterface &	GetMessageEncodingInterface () const
const TrapdoorFunctionBounds &	GetTrapdoorFunctionBounds () const
const TwoBases< TF_DecryptorBase, PrivateKeyCopier< SCHEME_OPTIONS::Keys > >::TrapdoorFunctionInterface &	GetTrapdoorFunctionInterface () const
HashIdentifier	GetHashIdentifier () const
unsigned int	GetDigestSize () const
unsigned int	PaddedBlockByteLength () const
unsigned int	PaddedBlockBitLength () const

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Member Function Documentation

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

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 106 of file pubkey.cpp. References Integer::ByteCount(), Integer::Encode(), TF_CryptoSystemBase< PK_Decryptor, TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > >::FixedCiphertextLength(), TF_CryptoSystemBase< PK_Decryptor, TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > >::PaddedBlockBitLength(), TF_CryptoSystemBase< PK_Decryptor, TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > >::PaddedBlockByteLength(), 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 156 of file pubkey.h.

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

Implements PK_FixedLengthCryptoSystemImpl< PK_Decryptor >. Definition at line 158 of file pubkey.h. Referenced by TF_DecryptorBase::Decrypt().

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

Implements PK_CryptoSystem. Definition at line 142 of file pubkey.h.

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

Implements PK_CryptoSystem. Definition at line 144 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 610 of file cryptlib.cpp.

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

• pubkey.h

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