VMAC message authentication code. More...

#include <vmac.h>

Inheritance diagram for VMAC< T_BlockCipher, T_DigestBitSize >:

Collaboration diagram for VMAC< T_BlockCipher, T_DigestBitSize >:

Static Public Member Functions
static std::string	StaticAlgorithmName ()

Private Member Functions
BlockCipher &	AccessCipher ()

int	DefaultDigestSize () const

Private Attributes
T_BlockCipher::Encryption	m_cipher

Additional Inherited Members
Public Types inherited from IteratedHashBase< word64, MessageAuthenticationCode >
typedef word64	HashWordType

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 Member Functions inherited from SimpleKeyingInterfaceImpl< VMAC_Base, SameKeyLengthAs< T_BlockCipher, SimpleKeyingInterface::UNIQUE_IV, T_BlockCipher::BLOCKSIZE > >
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 VMAC_Base
std::string	AlgorithmName () const
	Provides the name of this algorithm. More...

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

void	Resynchronize (const byte *nonce, int length=-1)
	Resynchronize with an IV. More...

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

unsigned int	DigestSize () const
	Provides the digest size of the hash. More...

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

void	TruncatedFinal (byte *mac, size_t size)
	Computes the hash of the current message. More...

unsigned int	BlockSize () const
	Provides the block size of the compression function. More...

ByteOrder	GetByteOrder () const

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

Public Member Functions inherited from IteratedHashBase< word64, MessageAuthenticationCode >
	IteratedHashBase ()
	Construct an IteratedHashBase. More...

unsigned int	OptimalBlockSize () const
	Provides the input block size most efficient for this cipher. More...

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

void	Update (const byte *input, size_t length)
	Updates a hash with additional input. More...

byte *	CreateUpdateSpace (size_t &size)
	Requests space which can be written into by the caller. More...

void	Restart ()
	Restart the hash. More...

void	TruncatedFinal (byte *digest, size_t digestSize)
	Computes the hash of the current message. 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	MaxIVLength () const
	Provides the maximum size of an IV. More...

Public Member Functions inherited from HashTransformation
virtual	~HashTransformation ()

HashTransformation &	Ref ()
	Provides a reference to this object. More...

virtual void	Final (byte *digest)
	Computes the hash of the current message. More...

unsigned int	TagSize () const
	Provides the tag size of the hash. More...

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. More...

virtual bool	Verify (const byte *digest)
	Verifies the hash of the current message. More...

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. More...

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. More...

virtual bool	TruncatedVerify (const byte *digest, size_t digestLength)
	Verifies the hash of the current message. More...

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. 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...

Protected Member Functions inherited from VMAC_Base
const BlockCipher &	GetCipher () const

void	HashEndianCorrectedBlock (const word64 *data)

size_t	HashMultipleBlocks (const word64 *input, size_t length)

void	Init ()

word64 *	StateBuf ()

word64 *	DataBuf ()

void	VHASH_Update_SSE2 (const word64 *data, size_t blocksRemainingInWord64, int tagPart)

template<bool T_128BitTag>
void	VHASH_Update_Template (const word64 *data, size_t blockRemainingInWord128)

void	VHASH_Update (const word64 *data, size_t blocksRemainingInWord128)

Protected Member Functions inherited from IteratedHashBase< word64, MessageAuthenticationCode >
word64	GetBitCountHi () const

word64	GetBitCountLo () const

void	PadLastBlock (unsigned int lastBlockSize, byte padFirst=0x80)

void	HashBlock (const HashWordType *input)

Protected Member Functions inherited from MessageAuthenticationCode
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...

Protected Member Functions inherited from HashTransformation
void	ThrowIfInvalidTruncatedSize (size_t size) const
	Validates a truncated digest size. More...

Protected Attributes inherited from VMAC_Base
bool	m_is128

bool	m_padCached

bool	m_isFirstBlock

unsigned int	m_L1KeyLength

Detailed Description

template<class T_BlockCipher, int T_DigestBitSize = 128>
class VMAC< T_BlockCipher, T_DigestBitSize >

VMAC message authentication code.

Template Parameters

T_BlockCipher	block cipher
T_DigestBitSize	digest size, in bits

VMAC is a block cipher-based message authentication code algorithm using a universal hash proposed by Ted Krovetz and Wei Dai in April 2007. The algorithm was designed for high performance backed by a formal analysis.

The implementation is based on Ted Krovetz's public domain vmac.c and draft-krovetz-vmac-01.txt.

See also: VMAC.

Since: Crypto++ 5.5

Definition at line 79 of file vmac.h.

Member Function Documentation

template<class T_BlockCipher , int T_DigestBitSize = 128>

BlockCipher& VMAC< T_BlockCipher, T_DigestBitSize >::AccessCipher ( )

inlineprivatevirtual

Implements VMAC_Base.

Definition at line 85 of file vmac.h.

template<class T_BlockCipher , int T_DigestBitSize = 128>

int VMAC< T_BlockCipher, T_DigestBitSize >::DefaultDigestSize ( ) const

inlineprivatevirtual

Implements VMAC_Base.

Definition at line 86 of file vmac.h.

template<class T_BlockCipher , int T_DigestBitSize = 128>

static std::string VMAC< T_BlockCipher, T_DigestBitSize >::StaticAlgorithmName ( )

inlinestatic

Definition at line 82 of file vmac.h.

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Member Data Documentation

template<class T_BlockCipher , int T_DigestBitSize = 128>

T_BlockCipher::Encryption VMAC< T_BlockCipher, T_DigestBitSize >::m_cipher

private

Definition at line 87 of file vmac.h.

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

src/cryptopp/vmac.h

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

template<class T_BlockCipher, int T_DigestBitSize = 128> class VMAC< T_BlockCipher, T_DigestBitSize >

Member Function Documentation

Member Data Documentation

template<class T_BlockCipher, int T_DigestBitSize = 128>
class VMAC< T_BlockCipher, T_DigestBitSize >