Wireless sensor networks are vulnerable to various interference security threats generally referred to as congestion or jamming attacks. The intentional interference with wireless transmissions will be used for the generation of Denial-of-Service attacks on wireless networks. Adversaries with internal knowledge of protocol specification and network secrets can launch low-effort jamming attacks that are difficult to detect and counter. This work addresses the jamming attacks under an internal threat model, where the adversary is active for a short period of time and selectively targeting the messages of high importance. Discriminating jamming attacks can be launched by performing real-time packet classification at the physical layer. To mitigate these attacks, this work proposes four efficient packet-hiding schemes that prevent real time packet classification by combining cryptographic primitives with physical-layer attributes. Random key distribution method used to generate hash bytes provides a more secured packet transmission approach in wireless networks.

Full text: IJEIR_960_Final.pdf