Demonstrating practical provably secure multi-node communication.

We demonstrate a practical and provably-secure multi-node communication scheme in the presence of a passive eavesdropper. The scheme is based on a random scheduling approach that hides the identity of the transmitter from the eavesdropper. This random scheduling leads to ambiguity at the eavesdropper with regard to the origin of the transmitted frame. We demonstrate the internal details of the technique and quantify the secrecy-overhead tradeoff. Our implementation is based on Crossbow Telosb motes, equipped with CC2420 radio chips. The demo will allow the attendees to see the scheme in action and how the scheme can achieve significant secrecy gains with vanishing outage probability. The demo also compared the proposed scheme to other direct extensions the two node case.