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:

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)

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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.

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Constructor & Destructor Documentation

ost::Digest::Digest

(

)

[protected]

virtual ost::Digest::~Digest

(

)

[virtual]

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

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

virtual void ost::Digest::initDigest

(

void

)

[pure virtual]

Reset the digest table to an initial default value.

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

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

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

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Friends And Related Function Documentation

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

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

• digest.h