MD5 sum computation algorithm. More...

#include <MD5Sum.h>

Public Types
typedef boost::array< uint32_t, 4 >	Digest
	Definition of the MD5 sum digest type.
Public Member Functions
void	clear ()
	Clear the MD5 sum.
Digest	getDigest () const
	Retrieve the MD5 sum's digest.
size_t	getNumDigestedBits () const
	Retrieve the MD5 sum's number of digested bits.
	MD5Sum (const std::string &text=std::string())
	Default constructor.
	MD5Sum (const MD5Sum &src)
	Copy constructor.
MD5Sum &	operator<< (const std::string &text)
	Stream operator for updating the MD5 sum.
std::string	toString () const
	Convert the MD5 sum to a hexadecimal format string.
void	update (const std::string &text)
	Update the MD5 sum using the given string.
void	write (std::ostream &stream) const
	Write the MD5 sum to a stream.
	~MD5Sum ()
	Destructor.
Protected Types
typedef boost::array< uint32_t, 16 >	Block
	Definition of the MD5 sum block type.
typedef boost::array< uint32_t, 2 >	Size
	Definition of the MD5 sum size type.
Protected Member Functions
void	update (const uint8_t *bytes, size_t numBytes)
	Update the MD5 sum using the given array of bytes.
Static Protected Member Functions
static void	finalize (Digest &digest, Size &numDigestedBits, Block &buffer)
	Compute the finalized digest.
static uint32_t	rotateLeft (uint32_t value, size_t numBits)
	Perform bit rotation on a digest element.
static void	transform (const Block &block, Digest &digest)
	Transform a block.
static void	update (Digest &digest, Size &numDigestedBits, Block &buffer, const uint8_t *bytes, size_t numBytes)
	Update a digest and its context.
Protected Attributes
Block	buffer
	The buffered bytes which did not fit into the last block.
Digest	digest
	The current digest.
Size	numDigestedBits
	The number of digested bits.
Static Protected Attributes
static const boost::array < uint32_t, 64 >	constants
	Constants according to the MD5 algorithm.
static const Digest	initialDigest
	Initial digest.
static const boost::array < uint32_t, 64 >	numBitRotations
	Number of bit rotations per round according to the MD5 algorithm.
static const Block	padding
	Padding required to fill the last MD5 block for finalization.

Detailed Description

MD5 sum computation algorithm.

This class implements the Message-Digest Algorithm 5 for computing the MD5 sum of a string.

Definition at line 36 of file MD5Sum.h.

Member Typedef Documentation

typedef boost::array<uint32_t, 16> variant_topic_tools::MD5Sum::Block [protected]

Definition of the MD5 sum block type.

Definition at line 89 of file MD5Sum.h.

typedef boost::array<uint32_t, 4> variant_topic_tools::MD5Sum::Digest

Definition of the MD5 sum digest type.

Definition at line 40 of file MD5Sum.h.

typedef boost::array<uint32_t, 2> variant_topic_tools::MD5Sum::Size [protected]

Definition of the MD5 sum size type.

Definition at line 85 of file MD5Sum.h.

Constructor & Destructor Documentation

variant_topic_tools::MD5Sum::MD5Sum ( const std::string & text = std::string() )

Default constructor.

Definition at line 68 of file MD5Sum.cpp.

variant_topic_tools::MD5Sum::MD5Sum ( const MD5Sum & src )

Copy constructor.

Definition at line 73 of file MD5Sum.cpp.

variant_topic_tools::MD5Sum::~MD5Sum ( )

Destructor.

Definition at line 79 of file MD5Sum.cpp.

Member Function Documentation

void variant_topic_tools::MD5Sum::clear ( )

Clear the MD5 sum.

Definition at line 117 of file MD5Sum.cpp.

void variant_topic_tools::MD5Sum::finalize	(	Digest &	digest,
		Size &	numDigestedBits,
		Block &	buffer
	)		`[static, protected]`

Compute the finalized digest.

Definition at line 217 of file MD5Sum.cpp.

MD5Sum::Digest variant_topic_tools::MD5Sum::getDigest ( ) const

Retrieve the MD5 sum's digest.

Definition at line 94 of file MD5Sum.cpp.

size_t variant_topic_tools::MD5Sum::getNumDigestedBits ( ) const

Retrieve the MD5 sum's number of digested bits.

Definition at line 86 of file MD5Sum.cpp.

MD5Sum & variant_topic_tools::MD5Sum::operator<< ( const std::string & text )

Stream operator for updating the MD5 sum.

Definition at line 232 of file MD5Sum.cpp.

uint32_t variant_topic_tools::MD5Sum::rotateLeft	(	uint32_t	value,
		size_t	numBits
	)		`[static, protected]`

Perform bit rotation on a digest element.

Definition at line 181 of file MD5Sum.cpp.

std::string variant_topic_tools::MD5Sum::toString ( ) const

Convert the MD5 sum to a hexadecimal format string.

Definition at line 128 of file MD5Sum.cpp.

void variant_topic_tools::MD5Sum::transform	(	const Block &	block,
		Digest &	digest
	)		`[static, protected]`

Transform a block.

Definition at line 142 of file MD5Sum.cpp.

void variant_topic_tools::MD5Sum::update ( const std::string & text )

Update the MD5 sum using the given string.

Definition at line 108 of file MD5Sum.cpp.

void variant_topic_tools::MD5Sum::update	(	const uint8_t *	bytes,
		size_t	numBytes
	)		`[protected]`

Update the MD5 sum using the given array of bytes.

Definition at line 113 of file MD5Sum.cpp.

void variant_topic_tools::MD5Sum::update	(	Digest &	digest,
		Size &	numDigestedBits,
		Block &	buffer,
		const uint8_t *	bytes,
		size_t	numBytes
	)		`[static, protected]`

Update a digest and its context.

Definition at line 185 of file MD5Sum.cpp.

void variant_topic_tools::MD5Sum::write ( std::ostream & stream ) const

Write the MD5 sum to a stream.

Definition at line 124 of file MD5Sum.cpp.

Member Data Documentation

Block variant_topic_tools::MD5Sum::buffer [protected]

The buffered bytes which did not fit into the last block.

Definition at line 118 of file MD5Sum.h.

const boost::array< uint32_t, 64 > variant_topic_tools::MD5Sum::constants [static, protected]

Initial value:

 {
  0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
  0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
  0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
  0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
  0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
  0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
  0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
  0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
  0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
  0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
  0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
  0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
  0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
  0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
  0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
  0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
}

Constants according to the MD5 algorithm.

Definition at line 102 of file MD5Sum.h.

Digest variant_topic_tools::MD5Sum::digest [protected]

The current digest.

Definition at line 110 of file MD5Sum.h.

const MD5Sum::Digest variant_topic_tools::MD5Sum::initialDigest [static, protected]

Initial value:

 {
  0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476
}

Initial digest.

Definition at line 93 of file MD5Sum.h.

const boost::array< uint32_t, 64 > variant_topic_tools::MD5Sum::numBitRotations [static, protected]

Initial value:

 {
  7, 12, 17, 22,  7, 12, 17, 22,  7, 12, 17, 22,  7, 12, 17, 22,
  5,  9, 14, 20,  5,  9, 14, 20,  5,  9, 14, 20,  5,  9, 14, 20,
  4, 11, 16, 23,  4, 11, 16, 23,  4, 11, 16, 23,  4, 11, 16, 23,
  6, 10, 15, 21,  6, 10, 15, 21,  6, 10, 15, 21,  6, 10, 15, 21
}

Number of bit rotations per round according to the MD5 algorithm.

Definition at line 98 of file MD5Sum.h.

Size variant_topic_tools::MD5Sum::numDigestedBits [protected]

The number of digested bits.

Definition at line 114 of file MD5Sum.h.

const MD5Sum::Block variant_topic_tools::MD5Sum::padding [static, protected]

Initial value:

 {
  0x00000080, 0x00000000, 0x00000000, 0x00000000,
  0x00000000, 0x00000000, 0x00000000, 0x00000000,
  0x00000000, 0x00000000, 0x00000000, 0x00000000,
  0x00000000, 0x00000000, 0x00000000, 0x00000000
}

Padding required to fill the last MD5 block for finalization.

Definition at line 106 of file MD5Sum.h.

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

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation