Detection and location of malicious nodes based on source coding and multi-path transmission in WSN

There are many security threats in WSN, such as malicious nodes on the transmission paths dropping, fabricating or tampering the forwarded messages. Most of the existing security methods relied on special hardware facilities, mechanism of node monitoring, encryption and authentication technology, which greatly increase the sensorpsilas price or computing and communicating cost in WSN. In this paper, we propose a new method, named as DESCM, which is based on source coding and multi-path transmission. Theoretical analysis shows that DESCM can detect and locate malicious nodes with high probability. Comparing with other methods, DESCM does not need special hardware, encryption or authentication technology, which can detect the malicious nodes with lower cost.