Method and apparatus for performing validation of elliptic curve public keys
CA 2439736 C · Owner: Yamada, Atsushi · Inventors: Yamada, Atsushi; Brown, Daniel R.L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of validating a public key comprising the steps of receiving a public key computing a function of the public key the function having a predefined value for all points of a given order and comparing the result of the function to predetermined information to indicate the validity of the public key.
Read the whole patent
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 September 3, 2003 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.