Secret Key Generation in the Two-Way Relay Channel With Active Attackers

摘要: Most of the existing work on key generation from wireless fading channels requires a direct link between legitimate users so that they can obtain correlated observations common link. This paper studies problem in two-way relay channel, which there is no channel generating terminals. We propose an effective scheme achieves substantially larger rate than mimic approach. Unlike schemes, need for terminals to our scheme. also investigate effects active attacker proposed protocol. characterize optimal attacker's strategy minimizes Furthermore, we establish maximal power under still achieve nonzero rate.