TTMAC message authentication code information. More...

#include <ttmac.h>

Inheritance diagram for TTMAC_Base:

Collaboration diagram for TTMAC_Base:

Public Member Functions
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...

Public Member Functions inherited from FixedKeyLength< 20 >
CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API	StaticGetValidKeyLength (size_t keylength)
	The default key length used by the algorithm provided as a constant. More...

Public Member Functions inherited from IteratedHash< word32, LittleEndian, 64, MessageAuthenticationCode >
	CRYPTOPP_COMPILE_ASSERT ((T_BlockSize &(T_BlockSize-1))==0)

virtual	~IteratedHash ()

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

ByteOrder	GetByteOrder () const
	Provides the byte order of the hash. More...

void	CorrectEndianess (HashWordType out, const HashWordType in, size_t byteCount)
	Adjusts the byte ordering of the hash. More...

Public Member Functions inherited from IteratedHashBase< word32, 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 size_t	MinKeyLength () const =0
	Returns smallest valid key length. More...

virtual size_t	MaxKeyLength () const =0
	Returns largest valid key length. More...

virtual size_t	DefaultKeyLength () const =0
	Returns default key length. More...

virtual size_t	GetValidKeyLength (size_t keylength) const =0
	Returns a valid key length for the algorithm. More...

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...

virtual IV_Requirement	IVRequirement () const =0
	Minimal requirement for secure IVs. 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...

virtual unsigned int	IVSize () const
	Returns length of the IV accepted by this object. 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 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...

virtual std::string	AlgorithmName () const
	Provides the name of this algorithm. More...

Public Member Functions inherited from Clonable
virtual	~Clonable ()

virtual Clonable *	Clone () const
	Copies this object. More...

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

Protected Member Functions
void	HashEndianCorrectedBlock (const word32 *data)

void	Init ()

word32 *	StateBuf ()

Protected Member Functions inherited from IteratedHash< word32, LittleEndian, 64, MessageAuthenticationCode >
word32 *	DataBuf ()

Protected Member Functions inherited from IteratedHashBase< word32, MessageAuthenticationCode >
word32	GetBitCountHi () const

word32	GetBitCountLo () const

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

virtual size_t	HashMultipleBlocks (const word32 *input, size_t length)

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...

Static Protected Member Functions
static void	Transform (word32 digest, const word32 X, bool last)

Protected Attributes
FixedSizeSecBlock< word32, 10 >	m_digest

FixedSizeSecBlock< word32, 5 >	m_key

Protected Attributes inherited from IteratedHash< word32, LittleEndian, 64, MessageAuthenticationCode >
FixedSizeSecBlock< word32, T_BlockSize/sizeof(word32)>	m_data

Additional Inherited Members
Public Types inherited from IteratedHash< word32, LittleEndian, 64, MessageAuthenticationCode >
typedef LittleEndian	ByteOrderClass

typedef word32	HashWordType

Public Types inherited from IteratedHashBase< word32, MessageAuthenticationCode >
typedef word32	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...

Detailed Description

TTMAC message authentication code information.

Definition at line 17 of file ttmac.h.

Member Function Documentation

unsigned int TTMAC_Base::DigestSize ( ) const

inlinevirtual

Provides the digest size of the hash.

Returns: the digest size of the hash.

Implements HashTransformation.

Definition at line 23 of file ttmac.h.

void TTMAC_Base::HashEndianCorrectedBlock ( const word32 * data )

inlineprotectedvirtual

Implements IteratedHashBase< word32, MessageAuthenticationCode >.

Definition at line 29 of file ttmac.h.

void TTMAC_Base::Init ( )

protectedvirtual

Implements IteratedHashBase< word32, MessageAuthenticationCode >.

Definition at line 19 of file ttmac.cpp.

word32* TTMAC_Base::StateBuf ( )

inlineprotectedvirtual

Implements IteratedHashBase< word32, MessageAuthenticationCode >.

Definition at line 31 of file ttmac.h.

static std::string TTMAC_Base::StaticAlgorithmName ( )

inlinestatic

Definition at line 20 of file ttmac.h.

void TTMAC_Base::Transform	(	word32 *	digest,
		const word32 *	X,
		bool	last
	)

staticprotected

Definition at line 98 of file ttmac.cpp.

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void TTMAC_Base::TruncatedFinal	(	byte *	digest,
		size_t	digestSize
	)

virtual

Computes the hash of the current message.

Parameters

digest	a pointer to the buffer to receive the hash
digestSize	the size of the truncated digest, in bytes

TruncatedFinal() call Final() and then copies digestSize bytes to digest. The hash is restarted the hash for the next message.

Implements HashTransformation.

Definition at line 28 of file ttmac.cpp.

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void TTMAC_Base::UncheckedSetKey	(	const byte *	key,
		unsigned int	length,
		const NameValuePairs &	params
	)

virtual

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 9 of file ttmac.cpp.

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Member Data Documentation

FixedSizeSecBlock<word32, 10> TTMAC_Base::m_digest

protected

Definition at line 33 of file ttmac.h.

FixedSizeSecBlock<word32, 5> TTMAC_Base::m_key

protected

Definition at line 34 of file ttmac.h.

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

src/cryptopp/ttmac.h
src/cryptopp/ttmac.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

Member Data Documentation