Unauthorized participant detection in multiparty conferencing by comparing a reference hash value received from a key management server with a generated roster hash value

  • US 10,404,481 B2
  • Filed: 06/06/2017
  • Issued: 09/03/2019
  • Est. Priority Date: 06/06/2017
  • Status: Active Grant
First Claim
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1. A computer-implemented method comprising:

  • joining a conferencing session;

    obtaining a roster for the conferencing session via a Session Initiation Protocol (SIP) channel;

    receiving a reference hash value from a key management server, wherein the reference hash value is based on a participant list generated by the key management server;

    generating a roster hash value based on the roster;

    comparing the reference hash value with the roster hash value; and

    determining that the roster is invalid when the reference hash value does not match the roster hash value.

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