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Method and system for secure packet communication

  • US 20070116285A1
  • Filed: 11/16/2006
  • Published: 05/24/2007
  • Est. Priority Date: 11/21/2005
  • Status: Active Grant
First Claim
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1. A method for processing a communication data item, said method comprising the steps of:

  • dividing the communication data item into a plurality of unencrypted packets, each of said unencrypted packets having a packet header and plaintext data, the packet header of each of said unencrypted packets comprising an identifier field that includes a packet identifier, the packet identifier being identical for all of said unencrypted packets; and

    generating an encrypted packet from each of said unencrypted packets by;

    determining a vector identifier from the identical packet identifier, said vector identifier having an association with the identical packet identifier;

    ascertaining an initial vector from the vector identifier; and

    forming an encrypted packet header, said forming the encrypted packet header comprising inserting the vector identifier into a first portion of the packet header and encrypting a second portion of the packet header through use of an encryption key, said first and second portions of the packet header being different portions of the packet header, said encrypting the second portion of the packet header being implemented through use of the initial vector.

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