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Expired Canadian patentCanada

Confusion data generator

CA 2243093 C · Owner: Barbir, Abdulkader Omar · Inventors: Barbir, Abdulkader Omar

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A confusion data generator for the generation of non-linear confusion data utilizes a plurality of arrays acting as non-linear state machines to generate a stream of confusion data of a certain width. Each non-linear state machine contributes equally to the overall width of the confusion data. The output bit stream from the confusion data generator is then used with a combiner such as an XOR combiner to generate secure text from plaintext. The confusion data generator can be used to securely store data on a storage medium or transmit data over a communication medium. The confusion data generator is computationally inexpensive scalable and provides good security when used with a combiner …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed July 10, 1998 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 10, 1998
GrantedMay 1, 2001
Term endedJuly 10, 2018
Patent numberCA 2243093 C
Classification (IPC)H04L9/28 +1 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJuly 10, 1998Patent grantedMay 1, 2001Term endedJuly 10, 2018

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.