Method for making secure execution of a computer programme, in particular in a smart card
CA 2531789 C · Owner: Thiebeauld De La Crouee, Hugues · Inventors: Thiebeauld De La Crouee, Hugues; Fischer, Jean-Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for making secure execution of a computer programme comprising the following steps: stacking a predetermined value in a pile of instructions of the programme; and stack popping the pile said stack popping step being adapted, as the case may be to enable detection of an anomalous execution.
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 July 6, 2004 and granted April 1, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2026.
- 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.