Weak::MD2 Class Reference

MD2 message digest. More...

#include <md2.h>

Inheritance diagram for Weak::MD2:

Public Member Functions
void	Update (const byte *input, size_t length)
	Updates a hash with additional input.
void	TruncatedFinal (byte *hash, size_t size)
	Computes the hash of the current message.
unsigned int	DigestSize () const
	Provides the digest size of the hash.
unsigned int	BlockSize () const
	Provides the block size of the compression function.
std::string	AlgorithmName () const
	Provides the name of this algorithm.
Public Member Functions inherited from HashTransformation
HashTransformation &	Ref ()
	Provides a reference to this object.
virtual byte *	CreateUpdateSpace (size_t &size)
	Request space which can be written into by the caller.
virtual void	Final (byte *digest)
	Computes the hash of the current message.
virtual void	Restart ()
	Restart the hash.
unsigned int	TagSize () const
	Provides the tag size of the hash.
virtual unsigned int	OptimalBlockSize () const
	Provides the input block size most efficient for this hash.
virtual unsigned int	OptimalDataAlignment () const
	Provides input and output data alignment for optimal performance.
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.
virtual bool	Verify (const byte *digest)
	Verifies the hash of the current message.
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.
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.
virtual bool	TruncatedVerify (const byte *digest, size_t digestLength)
	Verifies the hash of the current message.
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.
Public Member Functions inherited from Algorithm
	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms.
virtual std::string	AlgorithmProvider () const
	Retrieve the provider of this algorithm.
Public Member Functions inherited from Clonable
virtual Clonable *	Clone () const
	Copies this object.

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.

Constructor & Destructor Documentation

MD2()

Weak::MD2::MD2

(

)

Definition at line 24 of file md2.cpp.

Member Function Documentation

StaticAlgorithmName()

static const char * Weak::MD2::StaticAlgorithmName ( )

inlinestatic

Definition at line 23 of file md2.h.

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

inlinevirtual

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

inlinevirtual

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

inlinevirtual

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.

Member Data Documentation

DIGESTSIZE

const int Weak::MD2::DIGESTSIZE = 16

static

Definition at line 32 of file md2.h.

BLOCKSIZE

const int Weak::MD2::BLOCKSIZE = 16

static

Definition at line 33 of file md2.h.

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

• md2.h
• md2.cpp