ost::Digest Class Reference

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

Author:
David Sugar <dyfet@ostel.com> base class for hashing services.

Constructor & Destructor Documentation

ost::Digest::Digest (  )  [protected]

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


Member Function Documentation

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 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 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.

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.


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 Jan 8 01:25:57 2016 for GNU CommonC++ by  doxygen 1.5.6