IP address allocation method and system for wireless network

Abstract

The invention provides an IP address allocation method and system for a wireless network. The IP address allocation method comprises the steps of generating an authenticator random number and sending the authenticator random number to a client; receiving a client random number of the client, an MIC (Message Integrity Code) and a DHCP (Dynamic Host Configuration Protocol) request message; carrying out verification on the MIC, determining a response message of the DHCP request message, and sending whether to install an encryption / integration key or not and the response message to the client; and receiving a determination message sent by the client so as to complete sharing key authentication with the client, and conducting communication with the client according to the IP address. By means of the IP address allocation method for the wireless network in the embodiment of the invention, the time required by the client to access to or switch a wireless network is reduced. Furthermore, the time for affecting an application layer when the client accesses to or switches the wireless network is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a wireless network IP address allocation method, system, authentication end and client end. Background technique [0002] In wireless networks such as Wi-Fi (Wireless-Fidelity), for the sake of security and convenience, WPA (Wi-Fi Protected Access) based on PSK (Pre-shared key, pre-shared key) is usually used to protect the wireless network security system). [0003] However, when accessing such a wireless network, the authenticator, such as the wireless access point AP (Wireless AccessPoint) and the client, such as the station, pass the EAPOL-key (EAP (Extensible Authentication Protocol, Extensible Authentication Protocol) over LAN (Local Area Network, LAN) key) package four-way handshake for authentication and key negotiation, and, after the key negotiation is completed, if the client is set to obtain a dynamic IP, it needs to pass the DHCP (Dynamic Host...

AI Technical Summary

Problems solved by technology

The problem existing in the related technology is that when the client accesses the wireless network or switches the wireless network, the IP address acquisition or contract renewal starts only after the connection of the wireless link layer, and it takes a long time to establish an effective network.

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