Method for distributing enciphered key in wireless local area network

A wireless local area network and encryption key technology, which is applied in the field of encryption key distribution, can solve problems such as inappropriateness, and achieve the effects of easy implementation, improved security, and reduced costs

Inactive Publication Date: 2005-11-02
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this pre-shared key management method is not suitable for large wireless local area networks

Method used

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  • Method for distributing enciphered key in wireless local area network
  • Method for distributing enciphered key in wireless local area network
  • Method for distributing enciphered key in wireless local area network

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The present invention requires the cooperation of the authentication server, the wireless gateway and the mobile terminal to complete the dynamic distribution of the key. The mobile terminal stores the user name and key, or provides an interface for the user to input the user name and password. The authentication server supports the challenge handshake authentication protocol (CHAP authentication protocol), and stores the user name and password at the same time.

[0023] During the key distribution process, there may be various communication protocols between the mobile terminal and the wireless gateway, such as PPPoE, PPP or 802.1x. A communication protocol is simply a way of carrying information. Similarly, there may be multiple communication protocols between the wireless gateway and the authentication server, and generally the Rad...

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Abstract

This invention discloses a method for distributing enciphered cryptographic keys in radio LAN which combines distribution of cryptographic keys and CHAP certification and utilizes the certification server user name and cipher management function to manage distribution of cryptographic keys. Users can pan in large sphere not influencing dynamic distribution of cryptographic keys, at the same time a same user uses different cryptographic keys for different sessions to increase safety.

Description

technical field [0001] The invention relates to the communication between an access station (AP) and a mobile terminal in a wireless local area network, in particular to a method for distributing an encryption key. Background technique [0002] Wireless LANs transmit data, voice and video signals over wireless channels. Compared with the traditional wiring network, wireless local area network has the advantages of convenient installation, flexible use, economical saving and easy expansion, so it has been paid more and more attention. [0003] The coverage area of ​​WLAN is called service set, which is generally divided into Basic Service Set (BSS) 12 and Extended Service Set (ESS) 11, wherein Basic Service Set (BSS) 12 refers to wireless transceivers and The communication coverage area determined by the geographical environment is often called a cell, and the range is generally small. In order to expand the coverage area of ​​the wireless LAN, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L9/28H04L12/28
Inventor 李永茂朱静宁吴更石
Owner BEIJING HUAWEI DIGITAL TECH
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