Method and system for secure distribution of cryptographic keys on multicast networks
CA 2241701 A1 · Owner: Sun Microsystems, Inc. · Inventors: Aziz, Ashar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
multicast, A method and apparatus for secure and scalable key management in a multicast network environment is provided. In a first portion one or more seed nodes on the network receive a multicast transmission request for a cryptographic key from a requesting node. The seed node compares the identity of the requesting node with an authenticated predetermined list of nodes having permission to receive the cryptographic key. If the comparison indicates the requesting node is not a member of the authenticated predetermined list the seed node denies the multicast request. However if the, comparison indicates that the requesting node is a member of the predetermined list of nodes the, …
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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 June 22, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2020.
- 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.