Apparatus and method for secure commmunication based on channel characteristics
CA 2257645 A1 · Owner: Hassan, Amer A. · Inventors: Hershey, John E.; Chennakeshu, Sandeep; Hassan, Amer A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Characteristics of a communication channel are used to establish key sequences for use in encrypting communicated information. In one embodiment these , characteristics are the impedances of the channel viewed from one transceiver to the other and vice versa. The keys can be established with computations equivalent to a bounded distance decoding procedure and the decoder used to , establish a key may be used for processing the subsequent data transmission. Compared to classical and public-key cryptographic systems an alternative , mechanism for establishing and sharing key sequences that depends on a physical process is provided in which each party need not generate a pseudorandom …
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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 June 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2019.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.