Access Control Scheme Based on Fuzzy Identity in Opportunistic Network

Abstract

The environment of opportunistic network is complex and the malicious nodes in the network pose a great threat to the network performance. Since the security of opportunistic network is so important for data storage and forwarding, it is necessary to guarantee the security of network data transmission with the identity authentication of the node. This paper has proposed an access control scheme based on fuzzy identity encryption(FIBE) which improves the security of the system by the uniqueness of biological features. Besides, this scheme directly specifies the access right with attribute and allows users to prohibit malicious nodes from accessing the network. The simulation result shows that if there is malicious node in the network, the message delivery ratio of this scheme will be higher than other algorithms and it will not cause any obvious average delay of the message.