Set of particular keys for proving authenticity of an entity or the integrity of a message
CA 2388084 A1 · Owner: France Telecom · Inventors: Quisquater, Jean-Jacques; Guillou, Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a set of particular keys designed to prove the authenticity of an entity or the integrity of a message. The proof is established by a set of keys comprising: m (>=1) pairs of private Qi and public Gi = gi2 values; a public module n consisting of the product of f(>=2) prime factors; an exponent v=2k (k > 1) linked by relationships of the type: , Gi .Qiv .ident. 1. mod n or Gi .ident. QIv mod n . The set of keys is produced such that: among the m numbers obtained by increasing Qi or its inverse modulo n to modulo n square, k-1 times rank, at least one of them is different from ~ gi; among the 2m equations: x2 .ident. gi mod n x2 .ident. -gi mod n at least , one …
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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 September 29, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2022.
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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.