MD5 Class Reference

This class represents the implementation of the md5 message digest algorithm. More...

#include <hl_md5.h>

List of all members.

Public Member Functions
void	MD5Init (HL_MD5_CTX *context)
	Initialization begins an operation, writing a new context.
void	MD5Update (HL_MD5_CTX *context, unsigned char *input, unsigned int inputLen)
	Block update operation. Continues an md5 message-digest operation, processing another message block, and updating the context.
void	MD5Final (unsigned char digest[16], HL_MD5_CTX *context)
	Finalization ends the md5 message-digest operation, writing the the message digest and zeroizing the context.
	MD5 ()
	default constructor
Private Member Functions
void	MD5Transform (unsigned long int state[4], unsigned char block[64])
	Basic transformation. Transforms state based on block.
void	Encode (unsigned char *output, unsigned long int *input, unsigned int len)
	Encodes input data.
void	Decode (unsigned long int *output, unsigned char *input, unsigned int len)
	Decodes input data into output.
void	MD5_memcpy (POINTER output, POINTER input, unsigned int len)
	internal memory management
void	MD5_memset (POINTER output, int value, unsigned int len)
	internal memory management

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Detailed Description

This class represents the implementation of the md5 message digest algorithm.

Basically the class provides three public member-functions to create a hash: MD5Init(), MD5Update() and MD5Final(). If you want to create a hash based on a string or file quickly you should use the md5wrapper class instead of MD5.

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Member Function Documentation

void MD5::Decode	(	unsigned long int *	output,
		unsigned char *	input,
		unsigned int	len
	)			[private]

Decodes input data into output.

Parameters:

	output	Decoded data as OUT parameter
	input	Input data
	len	The length of the input assuming it is a multiple of 4

void MD5::Encode	(	unsigned char *	output,
		unsigned long int *	input,
		unsigned int	len
	)			[private]

Encodes input data.

Parameters:

	output	Encoded data as OUT parameter
	input	Input data
	len	The length of the input assuming it is a multiple of 4

void MD5::MD5_memcpy	(	POINTER	output,
		POINTER	input,
		unsigned int	len
	)			[private]

internal memory management

Parameters:

	output	OUT parameter where POINTER is an unsigned char*
	input	Data to copy where POINTER is a unsigned char*
	len	The length of the data
	output	OUT parameter where POINTER is a unsigned char*
	input	Data to copy where POINTER is a unsigned char*
	len	The length of the data

void MD5::MD5_memset	(	POINTER	output,
		int	value,
		unsigned int	len
	)			[private]

internal memory management

Parameters:

	output	OUT parameter where POINTER is an unsigned char*
	value	Value to fill the memory with
	len	The length of the data

void MD5::MD5Final	(	unsigned char	digest[16],
		HL_MD5_CTX *	context
	)

Finalization ends the md5 message-digest operation, writing the the message digest and zeroizing the context.

Parameters:

	digest	This is an OUT parameter which contains the created hash after the method returns
	context	The context to finalize

void MD5::MD5Init

(

HL_MD5_CTX *

context

)

Initialization begins an operation, writing a new context.

Parameters:

context

The HL_MD5_CTX context to initialize

void MD5::MD5Transform	(	unsigned long int	state[4],
		unsigned char	block[64]
	)			[private]

Basic transformation. Transforms state based on block.

Parameters:

	state	state to transform
	block	block to transform

void MD5::MD5Update	(	HL_MD5_CTX *	context,
		unsigned char *	input,
		unsigned int	inputLen
	)

Block update operation. Continues an md5 message-digest operation, processing another message block, and updating the context.

Parameters:

	context	The HL_MD5_CTX context to update
	input	The data to write into the context
	inputLen	The length of the input data

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

• /home/bgr/Workspace/hashlib2plus/trunk/src/hl_md5.h
• /home/bgr/Workspace/hashlib2plus/trunk/src/hl_md5.cpp