Security Classification-Based Encryption and Detection in Mobile Ad Hoc Networks

Owing to characteristics of open medium, dynamic topology and lack of centralized monitoring, the security of Mobile Ad Hoc Network is more rigorous than that of traditional network. Ad Hoc on Demand Distance Vector Routing (AODV) is an important on-demand routing protocol for Ad Hoc Network, it has no security mechanisms which put the whole network in danger of malicious node attack. To address the security issue, we establish a Trust classification (TC) trust model which can effectively evaluate the trust value of each node, then we introduce an efficient RSA public key encryption scheme based on security level; on the basis of these two works, a new protocol named Trust classification Encryption-AODV (TCE-AODV) is developed. The simulation results show that TCE-AODV is better than AODV in average end-to-end delay and outperforms in identification of malicious nodes.