Crypto++ 8.9 Free C++ class library of cryptographic schemes

Public Member Functions | Static Public Member Functions | Static Public Attributes | List of all members
Keccak_Final< T_DigestSize > Class Template Reference

Keccak message digest template. More...

Inheritance diagram for Keccak_Final< T_DigestSize >:

## Public Member Functions
| Keccak_Final ()
| Construct a Keccak-X message digest.
unsigned int | BlockSize () const
| Provides the block size of the compression function. More...
std::string | AlgorithmName () const
| Provides the name of this algorithm. More...
Public Member Functions inherited from Keccak
unsigned int | DigestSize () const
| Provides the digest size of the hash. 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...
void | Restart ()
| Restart the hash. More...
void | TruncatedFinal (byte *hash, size_t size)
| Computes the hash of the current message. More...
Public Member Functions inherited from HashTransformation
HashTransformation & | Ref ()
| Provides a reference to this object. More...
virtual byte * | CreateUpdateSpace (size_t &size)
| Request space which can be written into by the caller. 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 unsigned int | OptimalBlockSize () const
| Provides the input block size most efficient for this 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 | AlgorithmProvider () const
| Retrieve the provider 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 Attributes
static const int | DIGESTSIZE = T_DigestSize
static const int | BLOCKSIZE = 200 - 2 * DIGESTSIZE

## Detailed Description

### template<unsigned int T_DigestSize>
class Keccak_Final< T_DigestSize >

Keccak message digest template.

Template Parameters

  T_DigestSize | the size of the digest, in bytes

Since
  Crypto++ 6.0

Definition at line 72 of file keccak.h.

## Member Function Documentation

## ◆ BlockSize()

template<unsigned int T_DigestSize>

unsigned int Keccak_Final< T_DigestSize >::BlockSize | ( |  | ) | const
| inline virtual

Provides the block size of the compression function.

Returns
  block size of the compression function, in bytes

BlockSize() will return 0 if the hash is not block based or does not have an equivalent block size. For example, Keccak and SHA-3 do not have a block size, but they do have an equivalent block size called rate expressed as `r`.

Reimplemented from HashTransformation.

Definition at line 89 of file keccak.h.

## ◆ AlgorithmName()

template<unsigned int T_DigestSize>

std::string Keccak_Final< T_DigestSize >::AlgorithmName | ( |  | ) | const
| inline virtual

Provides the name of this algorithm.

Returns
  the standard algorithm name

The standard algorithm name can be a name like `AES` or `AES/GCM`. Some algorithms do not have standard names yet. For example, there is no standard algorithm name for Shoup's ECIES.

Note
  AlgorithmName is not universally implemented yet.

Reimplemented from Algorithm.

Definition at line 91 of file keccak.h.

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

- keccak.h