Patent Number: 7,822,073

Title: Packet flow side channel

Abstract: A packet flow side channel encoder and decoder embeds and extracts a side channel communication in an overt communication data stream transmitted over a network. The encoder selects more than one group of related packets being transmitted on the network, relates a packet of one group to a packet of another group to form a pair of packets; and delays the timing of at least one packet from each pair of packets The decoder determines inter-packet delays that are the difference in timing between two packets in a pair of packets; determines at least one inter-packet delay difference between two or more determined inter-packet delays; and extracts a bit using the at least one interpacket delay difference.

Inventors: Wang; Xinyuan (Clifton, VA), Chen; Shiping (Dublin, CA), Jajodia; Sushil (Oakton, VA)

Assignee: George Mason Intellectual Properties, Inc.

International Classification: H04J 3/06 (20060101); H04J 3/16 (20060101); H04J 3/00 (20060101)

Expiration Date: 2018-10-26 0:00:00