WMN anonymous communication method based on network coding

Abstract

The invention provides a WMN anonymous communication method based on network coding. The method comprises the following steps: initializing a system; establishing an initial route; determining, by a node i in a network, whether the node i in the network itself is a forwarding node, a sink node or a non-forwarding node; if the node i in the network is a forwarding node, storing a session flow identifier to a storage list and forwarding an initial route establishing packet; if the node i in the network is a sink node, storing the session flow identifier and a shared key used for replacement and decryption between a source node and the sink node, and forwarding the initial route establishing packet; if the node i in the network is a non-forwarding node, directly forwarding the initial route establishing packet; performing source coding; attaching the session flow identifier to the head of a coding packet by the source node at, encrypting the session flow identifier by use of its own broadcast key, and continuously broadcasting the coding packet until a message confirmation packet is received; forwarding the forwarding node; decoding the sink node; and confirming an anonymous message. According to the invention, an opportunistic routing protocol and network coding are organically combined, such that the network throughput is improved while the anonymity of both communication parties is effectively ensured.

Description

technical field [0001] The invention belongs to the technical field of network security, in particular to a WMN anonymous communication method based on network coding. Background technique [0002] With the rapid development of wireless communication technology and the rapid popularization of wireless network equipment, people's demand for wireless network is becoming more and more urgent. As an ideal technology to solve the "last mile" access problem, Wireless Mesh Network (WMN) has the advantages of self-organization, simple configuration, strong scalability, strong robustness, and low deployment cost. The mainstream technology choice for broadband access to the backbone network. As a wireless multi-hop network, WMN provides convenience for attacks due to the openness of its transmission medium, and security has become a bottleneck restricting the rapid popularization of WMN. In addition, as people pay more and more attention to personal privacy protection, anonymous com...

AI Technical Summary

Problems solved by technology

However, the operation process based on homomorphic encryption is more complicated, and the calculation overhead is relatively large.

[0004] It can be seen that although these solutions can solve the problem of anonymous communication in wireless networks, they have the characteristics of high computational overhead and low network throughput in the actual application process, which is not conducive to large-scale promotion in real environments.

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