SYNOPSIS

#include <digest.h>

Inherits streambuf, and ostream.

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

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 [email protected] base class for hashing services.

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::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.

Friends And Related Function Documentation

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

Author

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