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Expired Canadian patentCanada

Method and apparatus for verifiable generation of public keys

CA 2543796 C · Owner: Certicom Corp. · Inventors: Brown, Daniel R.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention provides a method of verifiable generation of public keys. According to the method, a self-signed signature is first generated and then used as input to the generation of a pair of private and public keys. Verification of the signature proves that the keys are generated from a key generation process utilizing the signature. A certification authority can validate and verify a public key generated from a verifiable key generation process.

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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 October 28, 2004 and granted December 8, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 28, 2004
GrantedDecember 8, 2015
Term endedOctober 28, 2024
Patent numberCA 2543796 C
Classification (IPC)H04L9/30 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedOct 28, 2004Patent grantedDec 8, 2015Term endedOct 28, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.