Weak::MD2 Class Reference

MD2 message digest. More...

Inheritance diagram for Weak::MD2:

## Public Member Functions

void | Update (const byte *input, size_t length)
| Updates a hash with additional input. More...
void | TruncatedFinal (byte *hash, size_t size)
| Computes the hash of the current message. More...
unsigned int | DigestSize () const
| Provides the digest size of the hash. More...
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 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...
virtual void | Restart ()
| Restart the hash. 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 unsigned int | OptimalDataAlignment () const
| Provides input and output data alignment for optimal performance. 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 const char * | StaticAlgorithmName ()

## Static Public Attributes

static const int | DIGESTSIZE = 16
static const int | BLOCKSIZE = 16

## Detailed Description

MD2 message digest.

See also
  MD2

Since
  Crypto++ 3.0

Definition at line 20 of file md2.h.

## Member Function Documentation

## Update()

void Weak::MD2::Update | ( | const byte * | input,
|  | size_t | length
| ) |  |

virtual

Updates a hash with additional input.

Parameters

  input | the additional input as a buffer
  length | the size of the buffer, in bytes

Implements HashTransformation.

Definition at line 38 of file md2.cpp.

## TruncatedFinal()

void Weak::MD2::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() calls Final() and then copies digestSize bytes to digest. The hash is restarted the hash for the next message.

Precondition
  `COUNTOF(digest) <= DigestSize()` or `COUNTOF(digest) <= HASH::DIGESTSIZE` ensures the output byte buffer is a valid size.

Implements HashTransformation.

Definition at line 102 of file md2.cpp.

## DigestSize()

unsigned int Weak::MD2::DigestSize | ( |  | ) | const

inline virtual

Provides the digest size of the hash.

Returns
  the digest size of the hash.

Implements HashTransformation.

Definition at line 28 of file md2.h.

## BlockSize()

unsigned int Weak::MD2::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 29 of file md2.h.

## AlgorithmName()

std::string Weak::MD2::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 30 of file md2.h.

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

- md2.h
- md2.cpp