Microsoft Technology Licensing, LLC

Jane R Liles

Claus T Giloi

A method and system for controlling admission of new nodes to a secured conference combines transport layer security mechanism and application layer certificate exchange. A new node that is not directly connected to the top provider of the conference sends a request to join the conference and a certification identifying itself to a first conference node connected to the top provider. The first node performs transport level authentication of the new node, and then forwards the request and certificate of the new node on an application level to the top provider. The top provider verifies the identity of the new node based on the certificate. If the new node is allowed to join the conference, the top provider updates a list of conference participants and makes the certificate of the new node available to other conference nodes so that they can also verify the identity of the new node.

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Jane R Liles