Safety authentication method and system for wireless network

Abstract

The invention discloses a safety authentication method and a safety authentication system for a wireless network. The system comprises a signal fingerprint monitoring and processing module and a wireless network access authentication module at an access point. The method comprises the following steps that: at a network access point, the signal fingerprint monitoring and processing module performsdown-conversion and digitized sampling on a detected steady-state communication signal and extracts the conventional signal characteristic and the spurious signal characteristic of the steady-state signal by a communication signal processing method; after a higher-dimension spurious signal characteristic is reduced and optimized, the conventional signal characteristic and the spurious characteristic are fused into a steady-state signal fingerprint; and a signal fingerprint matching and safety authentication module matches the monitored steady-state fingerprint of unknown communication equipment and provides a corresponding safety strategy service according to a recognition result by a network authentication protocol. The method and the system are used for performing safety authentication on wireless communication equipment and enhancing the safety of a wireless communication network in combination with a software authentication system and have the characteristics of high concealment, high stability and safe management.

Description

technical field [0001] The invention belongs to the technical field of communication signal processing and wireless network security, in particular to the technical field of wireless network security authentication based on steady-state signal fingerprints. Background technique [0002] In recent years, all kinds of wireless communication networks represented by WLAN are developing rapidly beyond imagination because of their advantages of high efficiency, fast and flexible networking. With the rapid popularization, the corresponding wireless network security issues are increasingly prominent. Open channels and some forms of ad hoc networking have led to various security threats, and wireless network equipment cannot provide better security protection due to software system and hardware limitations, especially in some high-risk and sensitive industries (such as military, financial, medical and In industrial control, etc.), wireless networks are facing serious security threa...

AI Technical Summary

Problems solved by technology

However, when direct digital frequency synthesizers (DDS) are widely used in the manufacture of communication equipment, the carrier frequency stability of the same type of wireless equipment is getting higher and higher, the above characteristics are difficult to identify multiple communication equipment of the same type. safety certificate

[0005] Therefore, it is not applicable to use the existing transient signal characteristics or spectrum characteristics to establish a network security certification system at the hardware level. It is necessary to use the steady-state communication signals transmitted by communication equipment during normal operation, and use modern communication signal characteristic analysis methods to establish A set of steady-state signal fingerprint extraction methods that can reflect the hardware attributes of communication transmitters and have wider practical value, and establish a wireless network security certification system based on steady-state signal fingerprint keys

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