CRC32Digest Class Reference

A crc32 collection/computation hash accumulator class. More...

#include <digest.h>

Inheritance diagram for CRC32Digest:

Collaboration diagram for CRC32Digest:

Public Member Functions
	CRC32Digest ()
	CRC32Digest (const CRC32Digest &crc)
void	initDigest (void)
	Reset the digest table to an initial default value. More...
unsigned	getSize (void)
	Get the size of a digest in octets. More...
	operator const uint32 () const
uint32	getDigest (void)
unsigned	getDigest (unsigned char *buffer)
	Copy the binary digest buffer to user memory. More...
void	putDigest (const unsigned char *buffer, unsigned length)
	Put data into the digest bypassing the stream subsystem. More...
CRC32Digest &	operator= (const CRC32Digest &right)

Protected Member Functions
unsigned char	overflow (unsigned char octet)
std::ostream &	strDigest (std::ostream &os)
	print a digest string for export. More...

Private Attributes
uint32	crc_table [256]
uint32	crc_reg
uint32	crc32

Detailed Description

A crc32 collection/computation hash accumulator class.

Author

Kevin Kraatz kraat.nosp@m.z@ar.nosp@m.lut.u.nosp@m.texa.nosp@m.s.edu crc32 computation hash.

Definition at line 197 of file digest.h.

Constructor & Destructor Documentation

CRC32Digest::CRC32Digest

(

)

CRC32Digest::CRC32Digest

(

const CRC32Digest &

crc

)

Member Function Documentation

uint32 CRC32Digest::getDigest ( void  )

inline

Definition at line 220 of file digest.h.

unsigned CRC32Digest::getDigest ( unsigned char *  buffer )

virtual

Copy the binary digest buffer to user memory.

Returns

number of bytes in digest.

Parameters

buffer

to write into.

Implements Digest.

unsigned CRC32Digest::getSize ( void  )

inlinevirtual

Get the size of a digest in octets.

Returns

number of bytes in digest.

Implements Digest.

Definition at line 215 of file digest.h.

void CRC32Digest::initDigest ( void  )

virtual

Reset the digest table to an initial default value.

Implements Digest.

CRC32Digest::operator const uint32 ( ) const

inline

Definition at line 217 of file digest.h.

CRC32Digest& CRC32Digest::operator=

(

const CRC32Digest &

right

)

unsigned char CRC32Digest::overflow ( unsigned char  octet )

protected

void CRC32Digest::putDigest ( const unsigned char *  buffer, unsigned  length  )

virtual

Put data into the digest bypassing the stream subsystem.

Parameters

buffer	to read from.
length	of data.

Implements Digest.

std::ostream& CRC32Digest::strDigest ( std::ostream &  os )

protectedvirtual

print a digest string for export.

Returns

string representation of digest.

Implements Digest.

Field Documentation

uint32 CRC32Digest::crc32

private

Definition at line 202 of file digest.h.

uint32 CRC32Digest::crc_reg

private

Definition at line 201 of file digest.h.

uint32 CRC32Digest::crc_table[256]

private

Definition at line 200 of file digest.h.

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

• digest.h