elm::checksum::MD5 Class Reference

#include <elm/checksum/MD5.h>

Inheritance diagram for elm::checksum::MD5:

Public Types
typedef unsigned char	digest_t [16]

Public Member Functions
	MD5 (void)
virtual	~MD5 (void)
void	digest (digest_t tab)
void	print (io::Output &out)
void	put (const void *buffer, t::uint32 length)
void	put (const cstring &str)
void	put (const string &str)
void	put (io::InStream &in)
void	put (io::InStream &in, int length)
MD5 &	operator<< (const char *str)
MD5 &	operator<< (const CString &str)
MD5 &	operator<< (const String &str)
template<class T >
MD5 &	operator<< (const T &value)
virtual int	write (const char *buffer, int size)
virtual int	flush (void)
virtual cstring	lastErrorMessage (void)
Public Member Functions inherited from elm::io::OutStream
virtual	~OutStream (void)
virtual int	write (char byte)

Additional Inherited Members
Static Public Attributes inherited from elm::io::OutStream
static OutStream &	null = _null

Detailed Description

Apply the MD5 algorithm (http://fr.wikipedia.org/wiki/MD5) to compute a checksum.

Data are checksummed calling any one of the put() methods (or using the overloaded operator <<). When all data has been checksummed, the checksum value is returned by digest().

Member Typedef Documentation

typedef unsigned char elm::checksum::MD5::digest_t[16]

Constructor & Destructor Documentation

elm::checksum::MD5::MD5

(

void

)

Build a new MD5 checksum builder.

elm::checksum::MD5::~MD5 ( void  )

virtual

Member Function Documentation

void elm::checksum::MD5::digest

(

digest_t

tab

)

Get the check as 512 bits byte array.

Parameters

tab	Digest result.

int elm::checksum::MD5::flush ( void  )

virtual

Cause the current stream to dump its buffer to the medium.

Returns

0 for success, less than 0 for error.

Implements elm::io::OutStream.

cstring elm::checksum::MD5::lastErrorMessage ( void  )

virtual

Return a message for the last error.

Returns

Message of the last error.

Reimplemented from elm::io::OutStream.

MD5& elm::checksum::MD5::operator<<

(

const char *

str

)

References put().

MD5& elm::checksum::MD5::operator<<

(

const CString &

str

)

References put().

MD5& elm::checksum::MD5::operator<<

(

const String &

str

)

References put().

template<class T >

MD5& elm::checksum::MD5::operator<<

(

const T &

value

)

References put().

void elm::checksum::MD5::print

(

io::Output &

out

)

Print the MD5 digest as an hexadecimal value.

References elm::io::hex(), elm::io::pad(), elm::io::right(), and elm::io::width().

Referenced by elm::checksum::operator<<().

void elm::checksum::MD5::put	(	const void *	block,
		t::uint32	length
	)

Put a data block in the checksum.

Parameters

block	Block address.
length	Block length.

References elm::min().

Referenced by operator<<(), put(), and write().

void elm::checksum::MD5::put

(

const cstring &

str

)

Put a C string in the checksum.

Parameters

str	C string to put in.

References elm::CString::chars(), elm::CString::length(), and put().

void elm::checksum::MD5::put

(

const string &

str

)

Put a string in the checksum.

Parameters

str	String to put in.

References elm::String::length(), and put().

void elm::checksum::MD5::put

(

io::InStream &

in

)

Put an input stream in the buffer. Read to the end of the stream.

Parameters

in	Input stream to read.

Exceptions

io::IOException

If there is an error during stream read.

References elm::io::InStream::read().

void elm::checksum::MD5::put	(	io::InStream &	in,
		int	length
	)

Put at most length bytes from the given stream to compute the MD5 checksum.

Parameters

in	Input stream to read.
length	Maximum number of bytes to read.

Exceptions

io::IOException

If there is an error during stream read.

References elm::min(), and elm::io::InStream::read().

int elm::checksum::MD5::write ( const char *  buffer, int  size  )

virtual

This is the main method of an output stream: the given buffer is put on the stream.

Parameters

buffer	Byte buffer to write.
size	Size of the byte buffer.

Returns

Number of transferred bytes or less than 0 for an error.

Implements elm::io::OutStream.

References put().

Member Data Documentation

t::uint32 elm::checksum::MD5::A

t::uint32 elm::checksum::MD5::B

t::uint32 elm::checksum::MD5::C

t::uint32 elm::checksum::MD5::D

---

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

• include/elm/checksum/MD5.h
• src/checksum_MD5.cpp