Wireless protection accessing device based on embedded system

Abstract

The device includes three modules: platform module of minimum embedded system, I / O expandable communication module and software system module. In realization of hardware, the invention puts forward new method for designing structure and realization. Features of the invention are: realizing WEP, TKIP, AES, dynamic updating cryptographic key, WPA standard, and first time in domestic for supporting WPA2 / IEEE802.11i standard; supporting 802.1x standard based each EAP safety authentication mode; realizing access control for MAC address from users, isolation in two layers for users, possessing functions for managing network addresses including DHCP, NAT; supporting local network management and remote security network management functions.

Description

technical field [0001] The invention relates to a wireless protection access device in the field of wireless network communication, which adopts an embedded processor MPC852 as a basic platform, and is a wireless protection access device based on an embedded system. Background technique [0002] Wireless local area network (Wireless Local Area Network, WLAN) is the application of modern wireless communication technology in the computer network with rapid development. And multimedia applications provide the means of realization. With the development of personal data communication, powerful portable data terminals and multimedia terminals have been widely used. In order to realize the goal that anyone can perform data communication at any time and any place, the traditional computer network is required to develop from wired to wireless, from fixed to mobile, and from single service to multimedia service. The wireless local area network technology that meets this demand is the...

AI Technical Summary

Problems solved by technology

Thereby, on the implementation mode of above known wireless protection access, some following shortcomings have been reflected: 1, lack of expansibility, because the relevant standard of wireless local area network is in the middle of constant revision, the security of known wireless local area network now The characteristics of performance and multimedia support need to be improved. The off-the-shelf set of chips cannot complete the wireless protection access function, and the existing hardware must be updated.

2. Lack of flexibility. Since the encryption algorithm is solidified in the chip, it is obviously difficult to implement the implementation method of the chip when implementing its own security algorithm on the wireless protection access device.

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