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System and method of creating and sending broadcast and multicast data

  • US 9,008,312 B2
  • Filed: 12/17/2012
  • Issued: 04/14/2015
  • Est. Priority Date: 06/15/2007
  • Status: Active Grant
First Claim
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1. A device comprising:

  • at least one memory configured to store instructions and data; and

    at least one processor configured to access the at least one memory and execute the instructions, causing the at least one processor to;

    generate an Internet Group Management Protocol (IGMP) query;

    encrypt the IGMP query to create a first cyphertext;

    transmit, to a lock device having access to a shared base session key, the first cyphertext, wherein the lock device is configured to decrypt the first ciphertext to yield the IGMP query and generate a multicast offset value;

    receive, from the lock device, encrypted data including the multicast offset value; and

    ;

    calculate a multicast base session key as a function of the shared base session key and the multicast offset value.

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