Cooperative Transmission Against Impersonation Attack Using Inter-Session Interference in Two-Hop Wireless Networks

The authentication error in Two-Hop wireless networks is considered without knowledge of eavesdropper channels and location. This paper presents an eavesdropper model with authentication error and two eavesdropping ways. In the model, the authentication error is expressed a pair(p_1, p_2). Based on the authentication error, a cooperative transmission protocol against impersonation attack is presented. Then, the number of eavesdroppers can be tolerated is analyzed while the desired secrecy is achieved with high probability in the limit of a large number of relay nodes. Final, we draw two conclusions for authentication error: 1) the impersonate nodes are chosen as relay is the dominant factor of the transmitted message leakage, and the impersonation attack does seriously decrease the number of eavesdroppers can be tolerated. 2) The Error authentication to legitimate nodes is almost no effect on the number of eavesdroppers can be tolerated.