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ost::Digest Class Reference

The digest base class is used for implementing and deriving one way hashing functions. base class for hashing services. More...

#include <digest.h>

Inheritance diagram for ost::Digest::

std::streambuf std::ostream ost::ChecksumDigest ost::CRC16Digest ost::CRC32Digest ost::MD5Digest List of all members.

Public Methods

virtual void initDigest (void)=0
 Reset the digest table to an initial default value. More...

virtual ~Digest ()

Protected Methods

 Digest ()
virtual unsigned getSize (void)=0
 Get the size of a digest in octets. More...

virtual unsigned getDigest (unsigned char *buffer)=0
 Copy the binary digest buffer to user memory. More...

virtual void putDigest (const unsigned char *buffer, unsigned length)=0
 Put data into the digest bypassing the stream subsystem. More...

virtual std::ostreamstrDigest (std::ostream &os)=0
 print a digest string for export. More...


Friends

std::ostreamoperator<< (std::ostream &os, Digest &ia)

Detailed Description

The digest base class is used for implementing and deriving one way hashing functions. base class for hashing services.

Author:
David Sugar <dyfet@ostel.com>


Constructor & Destructor Documentation

ost::Digest::Digest ( ) [protected]
 

ost::Digest::~Digest ( ) [virtual]
 


Member Function Documentation

unsigned ost::Digest::getDigest ( unsigned char * buffer ) [protected, pure virtual]
 

Copy the binary digest buffer to user memory.

Returns:
number of bytes in digest.
Parameters:
buffer   to write into.

Reimplemented in ost::ChecksumDigest, ost::CRC16Digest, ost::CRC32Digest, and ost::MD5Digest.

unsigned ost::Digest::getSize ( void ) [protected, pure virtual]
 

Get the size of a digest in octets.

Returns:
number of bytes in digest.

Reimplemented in ost::ChecksumDigest, ost::CRC16Digest, ost::CRC32Digest, and ost::MD5Digest.

void ost::Digest::initDigest ( void ) [pure virtual]
 

Reset the digest table to an initial default value.

Reimplemented in ost::ChecksumDigest, ost::CRC16Digest, ost::CRC32Digest, and ost::MD5Digest.

void ost::Digest::putDigest ( const unsigned char * buffer,
unsigned len ) [protected, pure virtual]
 

Put data into the digest bypassing the stream subsystem.

Parameters:
buffer   to read from.
length   of data.

Reimplemented in ost::ChecksumDigest, ost::CRC16Digest, ost::CRC32Digest, and ost::MD5Digest.

std::ostream & ost::Digest::strDigest ( std::ostream & os ) [protected, pure virtual]
 

print a digest string for export.

Returns:
string representation of digest.

Reimplemented in ost::ChecksumDigest, ost::CRC16Digest, ost::CRC32Digest, and ost::MD5Digest.


Friends And Related Function Documentation

std::ostream & operator<< ( std::ostream & os,
Digest & ia ) [friend]
 


The documentation for this class was generated from the following file:
Generated at Fri May 30 14:51:02 2008 for GNU CommonC++ by doxygen1.2.8.1 written by Dimitri van Heesch, © 1997-2001