Method and apparatus for generating an encryption key
CA 2439969 A1 · Owner: Stein, Howard · Inventors: Stein, Howard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An encryption key is formed by a method and apparatus that read a sequence of bytes from a memory (510). The sequence of bytes which is larger than the , number of bytes in the encryption key is randomly ordered due to the source of the sequence. Each byte in the sequence is assigned to one of a number of groups where the number of groups is defined by the number of bytes in the encryption key (512). Each group is then reduced to a single byte (514) to form one of the bytes of the encryption key (516).
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 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2024.
- 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.