Method for implementing secret communication of wireless local area network

Abstract

The invention relates to a method for implementing encrypted communication for wireless LAN comprising (1) presetting identification information in encryption device, storing identification information in authentication device, establishing information table of corresponding relation of identification information and characteristic information in authentication device, connecting the access point and authentication device; (2) installing and operating dedicated drive program; (3) encryption device sending authentication request to authentication device; (4) the authentication device authenticating according to identification information, if the authentication being successful, then fetching corresponding characteristic information, transmitting the first key created from the characteristic information by the authentication device according to the algorithm to wireless access point, and transmitting to encryption device; (5) the encryption device acquiring characteristic information via wireless access point, and creating a key from the characteristic information according to same key creation algorithm; (6) wireless access point and encryption device encrypting and deciphering the transmitted data via the first key in wireless channel.

Description

【Technical field】 [0001] The invention relates to a secure communication method between a communication terminal and a wireless access point in a wireless local area network, in particular to a method for realizing wireless access and communication security of a communication terminal in a wireless local area network by using an encryption device. 【Background technique】 [0002] At present, a wireless access system of a WLAN (Wireless Local Area Network, wireless local area network) is usually composed of a wireless network card, a wireless access point (AP, Access Point), a wireless access gateway (AG, Access Server) and a wireless access server ( AS, Access Server) and other parts. The more common networking method is to connect terminal devices such as computers and PDAs through wireless network cards, replacing the original wired network cards in the above devices, so as to realize wireless connections between terminal devices, terminal devices and wireless access points...

AI Technical Summary

Problems solved by technology

First of all, in this key management mode, in order to support user roaming, each wireless access point (AP) should store all user keys, and every time a user's key is added or modified, the network manager must It is necessary to add or modify the user's key on all wireless access points (AP), which makes the key management task quite heavy, and the storage capacity of the wireless access point (AP) may not meet the requirements

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