Method for generating pseudorandom numbers and a method for electronic sigenature
CA 2381937 A1 · Owner: Siemens Aktiengesellschaft · Inventors: Hess, Erwin; Serf, Pascale
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for generating pseudo random numbers and a method for electronic signatures. According to the inventive method for generating pseudo random numbers, points are determined on at least two different elliptical curves. A pseudo random number is produced respectively by linking the points. The linking of points of different elliptical curves to generate a pseudo random number makes it impossible to deduce the individual elliptical curves on the basis of the pseudo random numbers. The cryptographic security of the inventive method is thus tremendously increased because the computation of discrete logarithms is made impossible.
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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 August 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2022.
- 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.