Inheritance diagram for Twofish::Base:

Collaboration diagram for Twofish::Base:

Public Member Functions
void	UncheckedSetKey (const byte *userKey, unsigned int length, const NameValuePairs &params)
	Sets the key for this object without performing parameter validation. More...

Public Member Functions inherited from BlockCipherImpl< Twofish_Info >
unsigned int	BlockSize () const
	Provides the block size of the algorithm. More...

Public Member Functions inherited from AlgorithmImpl< SimpleKeyingInterfaceImpl< TwoBases< BlockCipher, Twofish_Info > > >
std::string	AlgorithmName () const

Public Member Functions inherited from SimpleKeyingInterfaceImpl< TwoBases< BlockCipher, Twofish_Info > >
size_t	MinKeyLength () const
	The minimum key length used by the algorithm. More...

size_t	MaxKeyLength () const
	The maximum key length used by the algorithm. More...

size_t	DefaultKeyLength () const
	The default key length used by the algorithm. More...

size_t	GetValidKeyLength (size_t keylength) const
	Provides a valid key length for the algorithm. More...

SimpleKeyingInterface::IV_Requirement	IVRequirement () const
	The default IV requirements for the algorithm. More...

unsigned int	IVSize () const
	The default initialization vector length for the algorithm. More...

Public Member Functions inherited from SimpleKeyingInterface
virtual	~SimpleKeyingInterface ()

virtual bool	IsValidKeyLength (size_t keylength) const
	Returns whether keylength is a valid key length. More...

virtual void	SetKey (const byte *key, size_t length, const NameValuePairs &params=g_nullNameValuePairs)
	Sets or reset the key of this object. More...

void	SetKeyWithRounds (const byte *key, size_t length, int rounds)
	Sets or reset the key of this object. More...

void	SetKeyWithIV (const byte key, size_t length, const byte iv, size_t ivLength)
	Sets or reset the key of this object. More...

void	SetKeyWithIV (const byte key, size_t length, const byte iv)
	Sets or reset the key of this object. More...

bool	IsResynchronizable () const
	Determines if the object can be resynchronized. More...

bool	CanUseRandomIVs () const
	Determines if the object can use random IVs. More...

bool	CanUsePredictableIVs () const
	Determines if the object can use random but possibly predictable IVs. More...

bool	CanUseStructuredIVs () const
	Determines if the object can use structured IVs. More...

unsigned int	DefaultIVLength () const
	Provides the default size of an IV. More...

virtual unsigned int	MinIVLength () const
	Provides the minimum size of an IV. More...

virtual unsigned int	MaxIVLength () const
	Provides the maximum size of an IV. More...

virtual void	Resynchronize (const byte *iv, int ivLength=-1)
	Resynchronize with an IV. More...

virtual void	GetNextIV (RandomNumberGenerator &rng, byte *iv)
	Retrieves a secure IV for the next message. More...

Public Member Functions inherited from BlockTransformation
virtual	~BlockTransformation ()

virtual void	ProcessAndXorBlock (const byte inBlock, const byte xorBlock, byte *outBlock) const =0
	Encrypt or decrypt a block. More...

void	ProcessBlock (const byte inBlock, byte outBlock) const
	Encrypt or decrypt a block. More...

void	ProcessBlock (byte *inoutBlock) const
	Encrypt or decrypt a block in place. More...

virtual unsigned int	OptimalDataAlignment () const
	Provides input and output data alignment for optimal performance. More...

virtual bool	IsPermutation () const
	returns true if this is a permutation (i.e. there is an inverse transformation) More...

virtual bool	IsForwardTransformation () const =0
	Determines if the cipher is being operated in its forward direction. More...

virtual unsigned int	OptimalNumberOfParallelBlocks () const
	Determines the number of blocks that can be processed in parallel. More...

virtual size_t	AdvancedProcessBlocks (const byte inBlocks, const byte xorBlocks, byte *outBlocks, size_t length, word32 flags) const
	Encrypt and xor multiple blocks using additional flags. More...

CipherDir	GetCipherDirection () const
	Provides the direction of the cipher. More...

Public Member Functions inherited from Algorithm
virtual	~Algorithm ()

	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms. More...

Public Member Functions inherited from Clonable
virtual	~Clonable ()

virtual Clonable *	Clone () const
	Copies this object. More...

Public Member Functions inherited from Twofish_Info
CRYPTOPP_STATIC_CONSTEXPR const char *	StaticAlgorithmName ()

Public Member Functions inherited from VariableKeyLength< 16, 16, 32, 8 >
CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API	StaticGetValidKeyLength (size_t keylength)
	The minimum key length used by the algorithm provided as a constant. More...

Static Protected Member Functions
static word32	h0 (word32 x, const word32 *key, unsigned int kLen)

static word32	h (word32 x, const word32 *key, unsigned int kLen)

Protected Attributes
FixedSizeSecBlock< word32, 40 >	m_k

FixedSizeSecBlock< word32, 4 *256 >	m_s

Static Protected Attributes
static const byte	q [2][256]

static const word32	mds [4][256]

Additional Inherited Members
Public Types inherited from SimpleKeyingInterface
enum	IV_Requirement { UNIQUE_IV = 0, RANDOM_IV, UNPREDICTABLE_RANDOM_IV, INTERNALLY_GENERATED_IV, NOT_RESYNCHRONIZABLE }
	Secure IVs requirements as enumerated values. More...

Public Types inherited from BlockTransformation
enum	FlagsForAdvancedProcessBlocks { BT_InBlockIsCounter =1, BT_DontIncrementInOutPointers =2, BT_XorInput =4, BT_ReverseDirection =8, BT_AllowParallel =16 }
	Bit flags that control AdvancedProcessBlocks() behavior. More...

Static Public Member Functions inherited from AlgorithmImpl< SimpleKeyingInterfaceImpl< TwoBases< BlockCipher, Twofish_Info > > >
static std::string CRYPTOPP_API	StaticAlgorithmName ()

Protected Member Functions inherited from BlockCipher
const Algorithm &	GetAlgorithm () const
	Returns the base class Algorithm. More...

Protected Member Functions inherited from SimpleKeyingInterface
void	ThrowIfInvalidKeyLength (size_t length)
	Validates the key length. More...

void	ThrowIfResynchronizable ()
	Validates the object. More...

void	ThrowIfInvalidIV (const byte *iv)
	Validates the IV. More...

size_t	ThrowIfInvalidIVLength (int length)
	Validates the IV length. More...

const byte *	GetIVAndThrowIfInvalid (const NameValuePairs &params, size_t &size)
	Retrieves and validates the IV. More...

void	AssertValidKeyLength (size_t length) const
	Validates the key length. More...

Detailed Description

Definition at line 26 of file twofish.h.

Member Function Documentation

word32 Twofish::Base::h	(	word32	x,
		const word32 *	key,
		unsigned int	kLen
	)

inlinestaticprotected

Definition at line 47 of file twofish.cpp.

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word32 Twofish::Base::h0	(	word32	x,
		const word32 *	key,
		unsigned int	kLen
	)

inlinestaticprotected

Definition at line 33 of file twofish.cpp.

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void Twofish::Base::UncheckedSetKey	(	const byte *	key,
		unsigned int	length,
		const NameValuePairs &	params
	)

virtual

Sets the key for this object without performing parameter validation.

Parameters

key	a byte buffer used to key the cipher
length	the length of the byte buffer
params	additional parameters passed as NameValuePairs

key must be at least DEFAULT_KEYLENGTH in length.

Implements SimpleKeyingInterface.

Definition at line 53 of file twofish.cpp.

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Member Data Documentation

FixedSizeSecBlock<word32, 40> Twofish::Base::m_k

protected

Definition at line 38 of file twofish.h.

FixedSizeSecBlock<word32, 4*256> Twofish::Base::m_s

protected

Definition at line 39 of file twofish.h.

const word32 Twofish::Base::mds

staticprotected

Definition at line 36 of file twofish.h.

const byte Twofish::Base::q

staticprotected

Definition at line 35 of file twofish.h.

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

src/cryptopp/twofish.h
src/cryptopp/tftables.cpp
src/cryptopp/twofish.cpp

Public Member Functions

Static Protected Member Functions

Protected Attributes

Static Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

Member Data Documentation