机会网络中基于身份门限签名的可信路由

Trusted Routing Based on Identity-Based Threshold Signature for Opportunistic Networks

In opportunistic Networks, compromised nodes can attack social context based routing protocols by publishing false social attributes information. To solve this problem, we propose a security scheme based on the identity based threshold signature which allows mobile nodes to jointly generate and distribute the secrets for social attributes in a totally self organized way without the need of any centralized authority. New joining nodes can reconstruct their own social attribute signatures by getting enough partial signature services from encounter opportunities with the initial nodes. Mobile nodes need to testify whether the neighbors can provide valid attribute signatures for their routing advertisements in order to resist potential routing attacks. Simulation results show that: by implementing our security scheme, the network delivery probability of the social context based routing protocol can be effectively improved when there are large numbers of compromised nodes in opportunistic networks.