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:

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. base class for hashing services.

Author:

David Sugar <dyfet@ostel.com>

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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::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.

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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

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