Crypto++ 8.1 Free C++ class library of cryptographic schemes

Public Member Functions | Static Public Member Functions | Static Public Attributes | List of all members
TTMAC_Base Class Reference

TTMAC message authentication code information. More...

Inheritance 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 IteratedHash< word32, LittleEndian, 64, MessageAuthenticationCode >
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.
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...
virtual std::string | AlgorithmProvider () const
| Retrieve the provider of this algorithm. More...
Public Member Functions inherited from 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
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
| 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 * | Clone () const
| Copies this object. More...

## Static Public Member Functions
static std::string | StaticAlgorithmName ()
Static Public Member Functions inherited from FixedKeyLength< 20 >
static size_t | StaticGetValidKeyLength (size_t keylength)
| The default key length for the algorithm provided by a static function. More...

## Static Public Attributes
static const int | DIGESTSIZE =20
Static Public Attributes inherited from FixedKeyLength< 20 >
static const int | KEYLENGTH
| The default key length used by the algorithm provided as a constant. More...
static const int | MIN_KEYLENGTH
| The minimum key length used by the algorithm provided as a constant. More...
static const int | MAX_KEYLENGTH
| The maximum key length used by the algorithm provided as a constant. More...
static const int | DEFAULT_KEYLENGTH
| The default key length used by the algorithm provided as a constant. More...
static const int | IV_REQUIREMENT
| The default IV requirements for the algorithm provided as a constant. More...
static const int | IV_LENGTH
| The default IV length used by the algorithm provided as a constant. More...
Static Public Attributes inherited from IteratedHash< word32, LittleEndian, 64, MessageAuthenticationCode >
static const int | BLOCKSIZE

## 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 16 of file ttmac.h.

## Member Function Documentation

## ◆ DigestSize()

unsigned int TTMAC_Base::DigestSize | ( |  | ) | const
| inline virtual

Provides the digest size of the hash.

Returns
  the digest size of the hash.

Implements HashTransformation.

Definition at line 22 of file ttmac.h.

## ◆ UncheckedSetKey()

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 43 of file ttmac.cpp.

## ◆ TruncatedFinal()

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 62 of file ttmac.cpp.

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

- ttmac.h
- ttmac.cpp