DMAC< T > Class Template Reference

DMAC message authentication code. More...

#include <dmac.h>

Inheritance diagram for DMAC< T >:

Public Member Functions
	DMAC ()
	Construct a DMAC.
	DMAC (const byte *key, size_t length=DMAC_Base< T >::DEFAULT_KEYLENGTH)
	Construct a DMAC.
Public Member Functions inherited from MessageAuthenticationCodeFinal< DMAC_Base< T > >
	MessageAuthenticationCodeFinal ()
	Construct a default MessageAuthenticationCodeFinal.
Public Member Functions inherited from ClonableImpl< MessageAuthenticationCodeFinal< DMAC_Base< T > >, MessageAuthenticationCodeImpl< DMAC_Base< T > > >
Clonable *	Clone () const
	Create a copy of this object.
Public Member Functions inherited from AlgorithmImpl< SimpleKeyingInterfaceImpl< DMAC_Base< T >, DMAC_Base< T > >, DMAC_Base< T > >
std::string	AlgorithmName () const
	The algorithm name.
Public Member Functions inherited from SimpleKeyingInterfaceImpl< DMAC_Base< T >, DMAC_Base< T > >
size_t	MinKeyLength () const
	The minimum key length used by the algorithm.
size_t	MaxKeyLength () const
	The maximum key length used by the algorithm.
size_t	DefaultKeyLength () const
	The default key length used by the algorithm.
size_t	GetValidKeyLength (size_t keylength) const
	Provides a valid key length for the algorithm.
SimpleKeyingInterface::IV_Requirement	IVRequirement () const
	The default IV requirements for the algorithm.
unsigned int	IVSize () const
	The initialization vector length for the algorithm.
Public Member Functions inherited from DMAC_Base< T >
void	UncheckedSetKey (const byte *key, unsigned int length, const NameValuePairs &params)
	Sets the key for this object without performing parameter validation.
void	Update (const byte *input, size_t length)
	Updates a hash with additional input.
void	TruncatedFinal (byte *mac, size_t size)
	Computes the hash of the current message.
unsigned int	DigestSize () const
	Provides the digest size of the hash.
std::string	AlgorithmProvider () const
	Retrieve the provider of this algorithm.
Public Member Functions inherited from SimpleKeyingInterface
virtual bool	IsValidKeyLength (size_t keylength) const
	Returns whether keylength is a valid key length.
virtual void	SetKey (const byte *key, size_t length, const NameValuePairs &params=g_nullNameValuePairs)
	Sets or reset the key of this object.
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	Resynchronize (const byte *iv, int ivLength=-1)
	Resynchronize with an IV.
virtual void	GetNextIV (RandomNumberGenerator &rng, byte *iv)
	Retrieves a secure IV for the next message.
Public Member Functions inherited from HashTransformation
HashTransformation &	Ref ()
	Provides a reference to this object.
virtual byte *	CreateUpdateSpace (size_t &size)
	Request space which can be written into by the caller.
virtual void	Final (byte *digest)
	Computes the hash of the current message.
virtual void	Restart ()
	Restart the hash.
unsigned int	TagSize () const
	Provides the tag size of the hash.
virtual unsigned int	BlockSize () const
	Provides the block size of the compression function.
virtual unsigned int	OptimalBlockSize () const
	Provides the input block size most efficient for this hash.
virtual unsigned int	OptimalDataAlignment () const
	Provides input and output data alignment for optimal performance.
virtual void	CalculateDigest (byte *digest, const byte *input, size_t length)
	Updates the hash with additional input and computes the hash of the current message.
virtual bool	Verify (const byte *digest)
	Verifies the hash of the current message.
virtual bool	VerifyDigest (const byte *digest, const byte *input, size_t length)
	Updates the hash with additional input and verifies the hash of the current message.
virtual void	CalculateTruncatedDigest (byte *digest, size_t digestSize, const byte *input, size_t length)
	Updates the hash with additional input and computes the hash of the current message.
virtual bool	TruncatedVerify (const byte *digest, size_t digestLength)
	Verifies the hash of the current message.
virtual bool	VerifyTruncatedDigest (const byte *digest, size_t digestLength, const byte *input, size_t length)
	Updates the hash with additional input and verifies the hash of the current message.
Public Member Functions inherited from Algorithm
	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms.

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...
Static Public Member Functions inherited from AlgorithmImpl< SimpleKeyingInterfaceImpl< DMAC_Base< T >, DMAC_Base< T > >, DMAC_Base< T > >
static std::string	StaticAlgorithmName ()
	The algorithm name.
Static Public Member Functions inherited from DMAC_Base< T >
static std::string	StaticAlgorithmName ()
Static Public Member Functions inherited from SameKeyLengthAs< T, IV_REQ, IV_L >
static size_t	StaticGetValidKeyLength (size_t keylength)
	Provides a valid key length for the algorithm provided by a static function.
Static Public Attributes inherited from DMAC_Base< T >
static const int	DIGESTSIZE =T::BLOCKSIZE
Static Public Attributes inherited from SameKeyLengthAs< T, IV_REQ, IV_L >
static const int	MIN_KEYLENGTH =T::MIN_KEYLENGTH
	The minimum key length used by the algorithm provided as a constant.
static const int	MAX_KEYLENGTH =T::MAX_KEYLENGTH
	The maximum key length used by the algorithm provided as a constant.
static const int	DEFAULT_KEYLENGTH =T::DEFAULT_KEYLENGTH
	The default key length used by the algorithm provided as a constant.
static const int	IV_REQUIREMENT =IV_REQ
	The default IV requirements for the algorithm provided as a constant.
static const int	IV_LENGTH =IV_L
	The default initialization vector length for the algorithm provided as a constant.

Detailed Description

template<class T>
class DMAC< T >

DMAC message authentication code.

Template Parameters

T	class derived from BlockCipherDocumentation

See also

CBC MAC for Real-Time Data Sources (08.15.1997) by Erez Petrank and Charles Rackoff

Since

Crypto++ 3.1

Definition at line 55 of file dmac.h.

Constructor & Destructor Documentation

DMAC() [1/2]

template<class T>

DMAC< T >::DMAC ( )

inline

Construct a DMAC.

Definition at line 59 of file dmac.h.

DMAC() [2/2]

template<class T>

DMAC< T >::DMAC ( const byte * key, size_t length = DMAC_Base<T>::DEFAULT_KEYLENGTH )

inline

Construct a DMAC.

Parameters

key	a byte array used to key the cipher
length	the size of the byte array, in bytes

Definition at line 64 of file dmac.h.

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

• dmac.h