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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:

ost::ChecksumDigest ost::CRC16Digest ost::CRC32Digest ost::MD5Digest List of all members.

Public Member Functions

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

Protected Member Functions

 Digest ()
virtual unsigned getSize (void)=0
 Get the size of a digest in octets.
virtual unsigned getDigest (unsigned char *buffer)=0
 Copy the binary digest buffer to user memory.
virtual void putDigest (const unsigned char *buffer, unsigned length)=0
 Put data into the digest bypassing the stream subsystem.
virtual std::ostream & strDigest (std::ostream &os)=0
 print a digest string for export.

Friends

std::ostream & operator<< (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]
 

virtual ost::Digest::~Digest  )  [virtual]
 


Member Function Documentation

virtual 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.

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

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

Get the size of a digest in octets.

Returns:
number of bytes in digest.

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

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

Reset the digest table to an initial default value.

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

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

Put data into the digest bypassing the stream subsystem.

Parameters:
buffer to read from.
length of data.

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

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

print a digest string for export.

Returns:
string representation of digest.

Implemented 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 on Fri May 30 14:40:07 2008 for GNU CommonC++ by  doxygen 1.3.9.1