sha1MessageDigest Class Reference

#include <sha1MessageDigest.hpp>

Inheritance diagram for sha1MessageDigest:

Collaboration diagram for sha1MessageDigest:

Public Member Functions
	sha1MessageDigest ()
void	update (const byte_t b)
void	update (const string &s)
void	update (const byte_t *buffer, const size_t len)
void	update (const byte_t *buffer, const size_t offset, const size_t len)
void	finalize ()
void	finalize (const string &s)
void	finalize (const byte_t *buffer, const size_t len)
void	finalize (const byte_t *buffer, const size_t offset, const size_t len)
size_t	getDigestLength () const
const byte_t *	getDigest () const
void	reset ()
Public Member Functions inherited from messageDigest
virtual const string	getHexDigest () const

Protected Member Functions
void	init ()
Protected Member Functions inherited from object
	object ()
	object (const object &)
object &	operator= (const object &)
virtual	~object ()

Static Protected Member Functions
static void	transform (unsigned int state[5], const byte_t buffer[64])

Protected Attributes
unsigned int	m_state [5]
unsigned int	m_count [2]
byte_t	m_buffer [64]
byte_t	m_digest [20]

Constructor & Destructor Documentation

sha1MessageDigest()

sha1MessageDigest

(

)

References init().

Member Function Documentation

finalize() [1/4]

void finalize ( )

virtual

Completes the hash computation by performing final operations such as padding.

Implements messageDigest.

References m_buffer, m_count, m_digest, m_state, and update().

Referenced by finalize(), finalize(), and finalize().

finalize() [2/4]

void finalize ( const byte_t * buffer, const size_t len )

virtual

Completes the hash computation by performing final operations such as padding.

This is equivalent to calling update() and then finalize().

Implements messageDigest.

References finalize(), and update().

finalize() [3/4]

void finalize ( const byte_t * buffer, const size_t offset, const size_t len )

virtual

Completes the hash computation by performing final operations such as padding.

This is equivalent to calling update() and then finalize().

Implements messageDigest.

References finalize().

finalize() [4/4]

void finalize ( const string & s )

virtual

Completes the hash computation by performing final operations such as padding.

This is equivalent to calling update() and then finalize().

Implements messageDigest.

References finalize().

getDigest()

const byte_t * getDigest ( ) const

virtual

Returns the hash, as computed by the algorithm.

You must call finalize() before using this function, or the hash will not be correct. To get the size of the returned array, call getDigestLength().

Returns

computed hash

Implements messageDigest.

References m_digest.

getDigestLength()

size_t getDigestLength ( ) const

virtual

Returns the length of the hash.

This is the length of the array returned by getDigest().

Returns

length of computed hash

Implements messageDigest.

init()

void init ( )

protected

References m_count, and m_state.

Referenced by reset(), and sha1MessageDigest().

reset()

void reset ( )

virtual

Resets the algorithm to its initial state, so that you can compute a new hash using the same object.

Implements messageDigest.

References init().

transform()

void transform ( unsigned int state[5], const byte_t buffer[64] )

staticprotected

Hash a single 512-bit block.

This is the core of the algorithm.

References R0, R1, R2, R3, and R4.

Referenced by update().

update() [1/4]

void update ( const byte_t * buffer, const size_t len )

virtual

Updates the digest using the specified array of bytes.

Parameters

buffer	array of bytes
len	number of bytes to use in the buffer

Implements messageDigest.

References m_buffer, m_count, m_state, and transform().

update() [2/4]

void update ( const byte_t * buffer, const size_t offset, const size_t len )

virtual

Updates the digest using the specified array of bytes, starting at the specified offset.

Parameters

buffer	array of bytes
offset	offset to start from in the array of bytes
len	number of bytes to use, starting at offset

Implements messageDigest.

References update().

update() [3/4]

void update ( const byte_t b )

virtual

Updates the digest using the specified byte.

Parameters

b	the byte with which to update the digest.

Implements messageDigest.

References update().

Referenced by finalize(), finalize(), update(), update(), and update().

update() [4/4]

void update ( const string & s )

virtual

Updates the digest using the specified string.

Parameters

s	the string with which to update the digest.

Implements messageDigest.

References update().

Member Data Documentation

m_buffer

byte_t m_buffer[64]

protected

Referenced by finalize(), and update().

m_count

unsigned int m_count[2]

protected

Referenced by finalize(), init(), and update().

m_digest

byte_t m_digest[20]

protected

Referenced by finalize(), and getDigest().

m_state

unsigned int m_state[5]

protected

Referenced by finalize(), init(), and update().

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

• sha1MessageDigest.hpp
• sha1MessageDigest.cpp