A secure communication method between mobile nodes in mobile self-organized network

Abstract

This invention disclose a secret communication method among mobile nexuses in a mobile self-organized network characterizing in applying Diffie-Hellman protocol and a public cryptographic key digital signature to realize double-way discrimination when setting up Ad Hoc mobile self-organized network link and deriving cryptographic key for the cipher of data link layer data frame and data completion, which realizes safety of segment by segment of the link, ensures that different links apply different working cryptographic keys in a mobile Ad Hoc network, solves the problem of counterfeit communication nexus and tap network and simplifies the management to said network link layer.

Description

technical field [0001] The invention relates to a method for ensuring safe communication between mobile nodes when a link is established in a mobile ad hoc network (Ad Hoc network for short). Background technique [0002] Ad Hoc network is a temporary autonomous wireless system composed of mobile nodes. As a wireless mobile network, it has many differences from traditional mobile networks. The main difference is that it does not rely on any fixed network facilities. The network interconnection between nodes is completed through the mutual cooperation between mobile nodes. Ad Hoc networks, in addition to being mainly used in the military, security-sensitive environments, and some situations that require emergency networking, are gradually developing into commercial environments, such as sensor networks, virtual classrooms, and home networks. [0003] The characteristics of the Ad Hoc network are: ① There is no base station or mobile switching center in the network; if two mo...

AI Technical Summary

Problems solved by technology

③ There may be threats to information integrity; when the network is attacked, due to the weakening of wireless signals during propagation, and human interference, information will be destroyed or interrupted during transmission

④ Facing the threat of counterfeit mobile nodes in the network; usually the communication of mobile nodes in the Ad Hoc network is not authenticated, because without identity authentication, any mobile communication node cannot ensure the opposite end of communication with it, that is The real communication peer; therefore, an attacker can impersonate a node in the network to communicate with other nodes, obtain unauthorized resources and sensitive information, and thus threaten the security of the entire network

⑤ Security threats of routing protocols; Ad Hoc network routing protocols may be an important target of network attacks, because existing Ad Hoc network routing protocols, including TORA, AODV, DSR, OLSR and ZRP, rarely consider their security issues , the attacker can obtain the routing data by eavesdropping without interfering with the normal routing protocol; or take the initiative to attack and continuously send data packets to the network to achieve the purpose of the attack; in summary, the main problem faced by the Ad Hoc network is that it is easy to subject to various security attacks

Only according to a certain actual environment and for a certain security weakness, a corresponding security solution can be proposed

Images