Dynamic Authentication-Key Re-assignment for Reliable Report Delivery

Sensor networks deployed in hostile environments are subject to various types of attacks. While multipath routing and en-route authentication schemes have been proposed to defend packet dropping and injection attacks respectively, it is challenging to defend both at the same time. The paper addresses this problem through an annulus based authentication-key reassignment scheme in multipath routing with en-route authentication. Our experimental results show that the proposed scheme achieves better trade-offs in true report delivery, false report filtering and energy consumption