论文标题
两个合法用户与窃听者之间的无线秘密共享游戏
Wireless Secret Sharing Game between Two Legitimate Users and an Eavesdropper
论文作者
论文摘要
无线秘密共享对于物联网时代的信息安全至关重要。一种方法是利用数据链路层中无线通道随机性的效果来生成两个合法的用户爱丽丝和鲍勃之间的共同秘密。本文从游戏理论的角度研究了这种秘密共享机制。特别是，我们在合法用户和窃听前夕之间制定了一个非合作的零和游戏。在对称的游戏中，夏娃的概率与在传输距离相同时成功接收来自爱丽丝和鲍勃的数据包的可能性相同，我们表明存在纯和混合策略nash equilibria。在一个不对称的游戏中，夏娃有不同概率成功地接收爱丽丝和鲍勃的数据包，可能不存在纯粹的策略。在这种情况下，我们展示了如何找到混合策略NASH平衡。
Wireless secret sharing is crucial to information security in the era of Internet of Things. One method is to utilize the effect of the randomness of the wireless channel in the data link layer to generate the common secret between two legitimate users Alice and Bob. This paper studies this secret sharing mechanism from the perspective of game theory. In particular, we formulate a non-cooperative zero-sum game between the legitimate users and an eavesdropper Eve. In a symmetrical game where Eve has the same probability of successfully receiving a packet from Alice and Bob when the transmission distance is the same, we show that both pure and mixed strategy Nash equilibria exist. In an asymmetric game where Eve has different probabilities of successfully receiving a packet from Alice and Bob, a pure strategy may not exist; in this case, we show how a mixed strategy Nash equilibrium can be found.
