Research Of Data Encryption Algorithm Based On WLAN

WLAN,an extension of the traditional wire network,with the advantages of portability,convenient to use,economic,easy to extend,can provide high speed wireless access,is widely used in various fields.With the occurrence of wireless network solving schemes,the target of surfing the internet anytime at any place has been easily reached.WLAN adopts public electromagnetic wave as its carrier so that anybody is able to eavesdrop or interfere the information.Therefore,the security of the WLAN is the most important matter.Researches into the data security techniques are all important.The process of WLAN data transmission can be divided into several modules,such as identity authentication,key agreement,data encryption,and data transmission.Each data transmission module has security problems such as user ID legitimacy,key management,data confidentiality,and data integrity, which are always interdependent.This paper firstly introduces the security techniques of WLAN and the cryptography knowledge which will be applied,then the author analyzes encryption algorithm mechanisms and encryption,decryption principles. Meanwhile,the author also improves the security defects,analyzes and simulates the improvement,on the basis of formalization analysis methods.Through the simulation analysis of BAN logic module,the methods of this paper prove appropriate to solve the data security problems of WLAN.