Design And Implementation Of Secure Wireless Local Area Network Based On EUHT And WAPI

With the rapid development of wireless local area network(WLAN)technology,its reliability,standardization,low cost and flexible feature are favored.WLAN has become a new development direction of wireless communicated with Internet.But due to the openness of wireless channel,the wireless LAN is more susceptible to a variety of active attack and passive attack threat.In the tines of increasingly serious network security threats,how to solve the problem of system security already become the primary problem of WLAN application.The international standards,IEEE802.11 i WLAN link layer security mechanism has confirmed the existence of some security risks through in-depth research.These risks may cause the failure of the security mechanism and the failure of protecting the security information of WLAN.Besides,the mainstream WLAN products on the market currently are using foreign standards(IEEE802.11),foreign chip(Intel,Broadcom,Qualcomm)and foreign encryption algorithm(AES)to design.Those products have the low autonomy and controllability,significant security risks,which is not suitable for some high safety demand scenarios such as government departments,banks and financial sector.Therefore,this paper reviews the domestic and international mainstream WLAN standard and the security mechanism,studies the certificate authentication,key management,data encryption and other processes,researches on the WLAN security.On this basis,by the principle of "self controlled,safe,stable and reliable,excellent performance",by using domestic EUHT communication standard,domestic communication chip WAPI,domestic security mechanism of domestic encryption algorithm,designs and realizes STA and AP,constructs the high security wireless local area network,and tests the function of the whole system,solves the security problems of WLAN from the system level fully.The main work includes the following parts:1? Classify the basic principle,communication standard and research status at home and abroad on the WLAN classification,comparison and analysis the 802.11 ac and EUHT,complete selecting the WLAN communication standard.2? Comparison and analysis the domestic and foreign research status of WLAN security classification,analyze and compare the major safety standard 802.11 i and WAPI authentication technology,transmission protection and key management technology,and complete selecting the WLAN security standard.3? Based on the domestic security mechanism WAPI and the communication standard EUHT,by selecting of domestic communication chip and domestic encryption algorithm,complete the design of STA and AP,including general plan design,hardware design,principle diagram design,PCB design and software design,and the later debugging.And draw conclusions as well as the next work plan based on the test results.