ECB_OneWay Class Reference

ECB block cipher mode of operation default implementation. More...

#include <modes.h>

Inheritance diagram for ECB_OneWay:

Public Member Functions
void	SetKey (const byte *key, size_t length, const NameValuePairs &params=g_nullNameValuePairs)
	Sets or reset the key of this object.
IV_Requirement	IVRequirement () const
	Minimal requirement for secure IVs.
unsigned int	OptimalBlockSize () const
	Provides the input block size most efficient for this cipher.
void	ProcessData (byte *outString, const byte *inString, size_t length)
	Encrypt or decrypt an array of bytes.
Public Member Functions inherited from BlockOrientedCipherModeBase
void	UncheckedSetKey (const byte *key, unsigned int length, const NameValuePairs &params)
	Sets the key for this object without performing parameter validation.
unsigned int	MandatoryBlockSize () const
	Provides the mandatory block size of the cipher.
bool	IsRandomAccess () const
	Determines whether the cipher supports random access.
bool	IsSelfInverting () const
	Determines whether the cipher is self-inverting.
bool	IsForwardTransformation () const
	Determines if the cipher is being operated in its forward direction.
void	Resynchronize (const byte *iv, int length=-1)
	Resynchronize with an IV.
Public Member Functions inherited from CipherModeBase
std::string	AlgorithmProvider () const
	Retrieve the provider of this algorithm.
size_t	MinKeyLength () const
	Returns smallest valid key length.
size_t	MaxKeyLength () const
	Returns largest valid key length.
size_t	DefaultKeyLength () const
	Returns default key length.
size_t	GetValidKeyLength (size_t keylength) const
	Returns a valid key length for the algorithm.
bool	IsValidKeyLength (size_t keylength) const
	Returns whether keylength is a valid key length.
unsigned int	OptimalDataAlignment () const
	Provides input and output data alignment for optimal performance.
unsigned int	IVSize () const
	Returns length of the IV accepted by this object.
void	SetCipher (BlockCipher &cipher)
	Set external block cipher.
void	SetCipherWithIV (BlockCipher &cipher, const byte *iv, int feedbackSize=0)
	Set external block cipher and IV.
Public Member Functions inherited from SimpleKeyingInterface
void	SetKeyWithRounds (const byte *key, size_t length, int rounds)
	Sets or reset the key of this object.
void	SetKeyWithIV (const byte *key, size_t length, const byte *iv, size_t ivLength)
	Sets or reset the key of this object.
void	SetKeyWithIV (const byte *key, size_t length, const byte *iv)
	Sets or reset the key of this object.
bool	IsResynchronizable () const
	Determines if the object can be resynchronized.
bool	CanUseRandomIVs () const
	Determines if the object can use random IVs.
bool	CanUsePredictableIVs () const
	Determines if the object can use random but possibly predictable IVs.
bool	CanUseStructuredIVs () const
	Determines if the object can use structured IVs.
unsigned int	DefaultIVLength () const
	Provides the default size of an IV.
virtual unsigned int	MinIVLength () const
	Provides the minimum size of an IV.
virtual unsigned int	MaxIVLength () const
	Provides the maximum size of an IV.
virtual void	GetNextIV (RandomNumberGenerator &rng, byte *iv)
	Retrieves a secure IV for the next message.
Public Member Functions inherited from StreamTransformation
StreamTransformation &	Ref ()
	Provides a reference to this object.
virtual unsigned int	GetOptimalBlockSizeUsed () const
	Provides the number of bytes used in the current block when processing at optimal block size.
virtual size_t	ProcessLastBlock (byte *outString, size_t outLength, const byte *inString, size_t inLength)
	Encrypt or decrypt the last block of data.
virtual unsigned int	MinLastBlockSize () const
	Provides the size of the last block.
virtual bool	IsLastBlockSpecial () const
	Determines if the last block receives special processing.
void	ProcessString (byte *inoutString, size_t length)
	Encrypt or decrypt a string of bytes.
void	ProcessString (byte *outString, const byte *inString, size_t length)
	Encrypt or decrypt a string of bytes.
byte	ProcessByte (byte input)
	Encrypt or decrypt a byte.
virtual void	Seek (lword pos)
	Seek to an absolute position.
Public Member Functions inherited from Algorithm
	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms.
virtual std::string	AlgorithmName () const
	Provides the name of this algorithm.
Public Member Functions inherited from Clonable
virtual Clonable *	Clone () const
	Copies this object.

Static Public Member Functions
static const char *	StaticAlgorithmName ()

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...

Detailed Description

ECB block cipher mode of operation default implementation.

Definition at line 271 of file modes.h.

Member Function Documentation

StaticAlgorithmName()

static const char * ECB_OneWay::StaticAlgorithmName ( )

inlinestatic

Definition at line 274 of file modes.h.

SetKey()

void ECB_OneWay::SetKey ( const byte *  key, size_t  length, const NameValuePairs &  params = g_nullNameValuePairs  )

inlinevirtual

Sets or reset the key of this object.

Parameters

key	the key to use when keying the object
length	the size of the key, in bytes
params	additional initialization parameters to configure this object

Reimplemented from SimpleKeyingInterface.

Definition at line 276 of file modes.h.

IVRequirement()

IV_Requirement ECB_OneWay::IVRequirement ( ) const

inlinevirtual

Minimal requirement for secure IVs.

Returns

the secure IV requirement of the algorithm

Implements CipherModeBase.

Definition at line 278 of file modes.h.

OptimalBlockSize()

unsigned int ECB_OneWay::OptimalBlockSize ( ) const

inlinevirtual

Provides the input block size most efficient for this cipher.

Returns

The input block size that is most efficient for the cipher

The base class implementation returns MandatoryBlockSize().

Note

Optimal input length is n * OptimalBlockSize() - GetOptimalBlockSizeUsed() for any n > 0.

Reimplemented from StreamTransformation.

Definition at line 279 of file modes.h.

ProcessData()

void ECB_OneWay::ProcessData ( byte *  outString, const byte *  inString, size_t  length  )

virtual

Encrypt or decrypt an array of bytes.

Parameters

outString	the output byte buffer
inString	the input byte buffer
length	the size of the input and output byte buffers, in bytes

ProcessData is called with a string of bytes whose size depends on MandatoryBlockSize. Either inString == outString, or they must not overlap.

See also

ProcessData, ProcessLastBlock, MandatoryBlockSize, MinLastBlockSize, BlockPaddingSchemeDef, IsLastBlockSpecial

Implements StreamTransformation.

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

• modes.h