Method for implementing secret communication between communication terminal and wireless access point

Abstract

The invention relates to a method for secret communication between communication terminal and wireless access point comprising following steps: (1) presetting unique identification information and communication key in encryption device, storing authenticated identification information and key of encryption device at wireless access point; (2)connecting encryption device and communication terminal via communication interface and acquiring power supply, installing and operating dedicated drive program on communication terminal; (3) the encryption device sending authentication request including identification information to wireless access point; (4) wireless access point authenticating the encryption device according to identification information included in authentication request, if authentication being successful, then fetching corresponding key and sending notice of permission for access; (5) the encryption device notifying communication terminal of the established connection with wireless access point after receiving permission for access, encrypting, deciphering the transmitted data by communication key; wireless access point encrypting and deciphering the transmitted data via key.

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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