Differential Secret Sharing in Wireless Networks

This letter utilizes the principle of reciprocity in electromagnetic wave propagation as well as the variations of the wireless channel state to share secrets in wireless networks. In particular, a novel secret sharing mechanism is proposed to share secret bits between two wireless users. Using the Central Limit Theorem, we show that the proposed approach can provide performance guarantee when only limited stochastic information is available. A few properties of the proposed approach are identified to optimize the secret sharing process. Simulation results indicate that compared with the work done by Mathur et al., the proposed mechanism can share secret bits 3-4 times faster with higher probability of success.