MDC cipher encryption operation. More...

Inheritance diagram for MDC< T >::Enc:

Collaboration diagram for MDC< T >::Enc:

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...

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

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

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

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

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

Public Member Functions inherited from SimpleKeyingInterfaceImpl< TwoBases< BlockCipher, MDC_Info< T > > >
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 ()

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 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 FixedKeyLength< T::BLOCKSIZE >
CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API	StaticGetValidKeyLength (size_t keylength)
	The default key length used by the algorithm provided as a constant. More...

Private Types
typedef T::HashWordType	HashWordType

Private Member Functions
HashWordType *	Key ()

const HashWordType *	Key () const

HashWordType *	Buffer () const

Private Attributes
FixedSizeSecBlock< byte, MDC_Info< T >::KEYLENGTH, AllocatorWithCleanup< byte > >	m_key

FixedSizeSecBlock< byte, MDC_Info< T >::BLOCKSIZE, AllocatorWithCleanup< byte > >	m_buffer

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, MDC_Info< T > > > >
static std::string CRYPTOPP_API	StaticAlgorithmName ()

Static Public Member Functions inherited from MDC_Info< T >
static std::string	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

template<class T>
class MDC< T >::Enc

MDC cipher encryption operation.

Definition at line 33 of file mdc.h.

Member Typedef Documentation

template<class T >

typedef T::HashWordType MDC< T >::Enc::HashWordType

private

Definition at line 35 of file mdc.h.

Member Function Documentation

template<class T >

HashWordType* MDC< T >::Enc::Buffer ( ) const

inlineprivate

Definition at line 65 of file mdc.h.

template<class T >

bool MDC< T >::Enc::IsPermutation ( ) const

inlinevirtual

returns true if this is a permutation (i.e. there is an inverse transformation)

Reimplemented from BlockTransformation.

Definition at line 58 of file mdc.h.

template<class T >

HashWordType* MDC< T >::Enc::Key ( )

inlineprivate

Definition at line 63 of file mdc.h.

template<class T >

const HashWordType* MDC< T >::Enc::Key ( ) const

inlineprivate

Definition at line 64 of file mdc.h.

template<class T >

unsigned int MDC< T >::Enc::OptimalDataAlignment ( ) const

inlinevirtual

Provides input and output data alignment for optimal performance.

Returns: the input data alignment that provides optimal performance

Reimplemented from BlockTransformation.

Definition at line 60 of file mdc.h.

template<class T >

void MDC< T >::Enc::ProcessAndXorBlock	(	const byte *	inBlock,
		const byte *	xorBlock,
		byte *	outBlock
	)		const

inlinevirtual

Encrypt or decrypt a block.

Parameters

inBlock	the input message before processing
outBlock	the output message after processing
xorBlock	an optional XOR mask

ProcessAndXorBlock encrypts or decrypts inBlock, xor with xorBlock, and write to outBlock.

The size of the block is determined by the block cipher and its documentation. Use BLOCKSIZE at compile time, or BlockSize() at runtime.

Note: The message can be transformed in-place, or the buffers must not overlap

See also: FixedBlockSize, BlockCipherFinal from seckey.h and BlockSize()

Implements BlockTransformation.

Definition at line 45 of file mdc.h.

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template<class T >

void MDC< T >::Enc::UncheckedSetKey	(	const byte *	key,
		unsigned int	length,
		const NameValuePairs &	params
	)

inlinevirtual

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 38 of file mdc.h.

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Member Data Documentation

template<class T >

FixedSizeSecBlock<byte, MDC_Info<T>::BLOCKSIZE, AllocatorWithCleanup<byte> > MDC< T >::Enc::m_buffer

mutableprivate

Definition at line 69 of file mdc.h.

template<class T >

FixedSizeSecBlock<byte, MDC_Info<T>::KEYLENGTH, AllocatorWithCleanup<byte> > MDC< T >::Enc::m_key

private

Definition at line 68 of file mdc.h.

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

src/cryptopp/mdc.h

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

template<class T> class MDC< T >::Enc

Member Typedef Documentation

Member Function Documentation

Member Data Documentation

template<class T>
class MDC< T >::Enc