Browse Prior Art Database

Compression/Encryption Fidelity Attribute

IP.com Disclosure Number: IPCOM000122196D
Original Publication Date: 1991-Nov-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 1 page(s) / 37K

Publishing Venue

IBM

Related People

Johnson, WJ: AUTHOR [+3]

Abstract

A mechanism is described which allows determining orders of encryption and compression so that appropriate orders for de-encryption and decompression can take place.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 90% of the total text.

Compression/Encryption Fidelity Attribute

      A mechanism is described which allows determining orders
of encryption and compression so that appropriate orders for
de-encryption and decompression can take place.

      An attribute can be associated with a distribution.  It
contains a time order representation of the encryption and
compression algorithms which have occurred on a distribution.  It is
difficult to impossible to know which occurred first on a
distribution, encryption or compression. A distribution cannot be
returned to the proper integrity unless information on encryption and
compression order is maintained.  Furthermore, automated services in
a LAN environment may cause more than one instance of a compression
or encryption.

      The method consists of an attribute which is updated by
encryption and compression processes by placing an
encryption/compression identifier in a last-in, first-out (LIFO)
manner into the attribute and by removing the identifier in LIFO
manner when de-encrypting or de-compressing.  The attribute ensures
correct order when managing the distribution.

      The present implementation maintains distribution fidelity in a
secure and storage space-sensitive LAN environment.  A Document
Interchange Architecture (DIA) example implementation would be a new
Interchange Document Profile (IDP) attribute in the base profile.
Length/ Type Values (LTs) would be added in a LIFO manner to ensure
document fidelity as it travel...