CFB_CipherConcretePolicy< WT, W, BASE > Struct Template Reference

Base class for feedback based stream ciphers. More...

#include <strciphr.h>

Inheritance diagram for CFB_CipherConcretePolicy< WT, W, BASE >:

Classes
struct	RegisterOutput
	Provides alternate access to a feedback register. More...

Public Types
typedef WT	WordType

Public Member Functions
unsigned int	GetAlignment () const
	Provides data alignment requirements.
unsigned int	GetBytesPerIteration () const
	Provides number of bytes operated upon during an iteration.
bool	CanIterate () const
	Flag indicating iteration support.
void	TransformRegister ()
	Perform one iteration in the forward direction.
Public Member Functions inherited from CFB_CipherAbstractPolicy
virtual byte *	GetRegisterBegin ()=0
	Access the feedback register.
virtual void	Iterate (byte *output, const byte *input, CipherDir dir, size_t iterationCount)
	Iterate the cipher.
virtual void	CipherSetKey (const NameValuePairs &params, const byte *key, size_t length)=0
	Key the cipher.
virtual void	CipherResynchronize (const byte *iv, size_t length)
	Resynchronize the cipher.
virtual std::string	AlgorithmProvider () const
	Retrieve the provider of this algorithm.

Detailed Description

template<typename WT, unsigned int W, class BASE = CFB_CipherAbstractPolicy>
struct CFB_CipherConcretePolicy< WT, W, BASE >

Base class for feedback based stream ciphers.

Template Parameters

WT	word type
W	count of words
BASE	CFB_CipherAbstractPolicy derived base class

Definition at line 475 of file strciphr.h.

Member Typedef Documentation

WordType

template<typename WT , unsigned int W, class BASE = CFB_CipherAbstractPolicy>

typedef WT CFB_CipherConcretePolicy< WT, W, BASE >::WordType

Definition at line 477 of file strciphr.h.

Constructor & Destructor Documentation

~CFB_CipherConcretePolicy()

template<typename WT , unsigned int W, class BASE = CFB_CipherAbstractPolicy>

virtual CFB_CipherConcretePolicy< WT, W, BASE >::~CFB_CipherConcretePolicy ( )

inlinevirtual

Definition at line 479 of file strciphr.h.

Member Function Documentation

GetAlignment()

template<typename WT , unsigned int W, class BASE = CFB_CipherAbstractPolicy>

unsigned int CFB_CipherConcretePolicy< WT, W, BASE >::GetAlignment ( ) const

inlinevirtual

Provides data alignment requirements.

Returns

data alignment requirements, in bytes

Internally, the default implementation returns 1. If the stream cipher is implemented using an SSE2 ASM or intrinsics, then the value returned is usually 16.

Implements CFB_CipherAbstractPolicy.

Definition at line 485 of file strciphr.h.

GetBytesPerIteration()

template<typename WT , unsigned int W, class BASE = CFB_CipherAbstractPolicy>

unsigned int CFB_CipherConcretePolicy< WT, W, BASE >::GetBytesPerIteration ( ) const

inlinevirtual

Provides number of bytes operated upon during an iteration.

Returns

bytes operated upon during an iteration, in bytes

See also

GetOptimalBlockSize()

Implements CFB_CipherAbstractPolicy.

Definition at line 490 of file strciphr.h.

CanIterate()

template<typename WT , unsigned int W, class BASE = CFB_CipherAbstractPolicy>

bool CFB_CipherConcretePolicy< WT, W, BASE >::CanIterate ( ) const

inlinevirtual

Flag indicating iteration support.

Returns

true if the cipher supports iteration, false otherwise

Reimplemented from CFB_CipherAbstractPolicy.

Definition at line 494 of file strciphr.h.

TransformRegister()

template<typename WT , unsigned int W, class BASE = CFB_CipherAbstractPolicy>

void CFB_CipherConcretePolicy< WT, W, BASE >::TransformRegister ( )

inlinevirtual

Perform one iteration in the forward direction.

Implements CFB_CipherAbstractPolicy.

Definition at line 497 of file strciphr.h.

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

• strciphr.h