Wireless mesh network link layer ciphering method based on modularized routing

Abstract

The invention discloses an encryption method for a link layer of a wireless mesh network, which is based on modularized routing and belongs to the field of wireless network technologies. An element which comprises a pre-shared key and adopts the function for encrypting the link layer of a DES cryptographic algorithm on the basis of CLICK modularization routing software is configured on each node; the element is added to the process of a CLICK execution script code, and correct parameters are set; and when the whole mesh network is started, by using the encryption method, communication among nodes of the mesh network is provided with a reliable and secure encryption guarantee, and the problem of encrypting the link layers between the nodes of the mesh network is solved.

Description

technical field [0001] The invention relates to an encryption method in the technical field of wireless networks, in particular to a modular route-based encryption method for a link layer of a wireless mesh network. Background technique [0002] Wireless mesh network is a technology widely used in wireless access, municipal management, disaster relief, security monitoring, industrial management, logistics collaboration and other fields. The design of its encryption method directly affects the reliability and reliability of wireless mesh network work. confidentiality. Because the wireless mesh network is different from the ordinary wireless network, it has the performance requirements of self-organization, self-healing, and self-adaptation, and the background characteristics of multi-hop, mobility, and changing environment, so the encryption method of the wireless mesh network must be Taking care of the stability of the network to ensure the smooth and efficient data communi...

AI Technical Summary

Problems solved by technology

First of all, from a security point of view, the invention only uses the interaction of random numbers to complete the authentication, which is easy to be replayed in the wireless network by stealing data packets to deceive the server into trusting the illegally obtained key to join the network. Secondly, from the requirements of the device From the point of view, this invention requires a dedicated server for verification, which is not suitable in a wireless mesh network, because a wireless mesh network is a multi-hop network, if each AP has to interact with the server to join the network , the first authentication process between APs in the interaction process cannot be guaranteed, and if the new AP is far away from the server, the communication will become very difficult, thus greatly reducing the availability of the network, the only way is to increase the server This will greatly increase the cost and difficulty of network deployment, which are not in line with the adaptive and flexible characteristics of wireless mesh networks

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