Safety access method of wireless metropolitan area network

A wireless metropolitan area network and secure access technology, applied in key distribution, can solve the problems of paralysis of the wireless metropolitan area network, low load capacity of base station BS, and increased computing burden of base station BS, so as to avoid resources, improve load capacity, avoid denial of service) attack
CN101272301AInactive Publication Date: 2008-09-24GCI SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GCI SCI & TECH
Publication Date
2008-09-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a secure access method for the wireless metropolitan area network which comprises an identification-authentication step and a session-key consultation step. The identification-authentication step comprises: a base station (BS) sends an activating message for access identification to a subscriber station (SS); the SS sends a request message for access identification to the BS; if the SS which sends the request message for access identification has been sent with the activating message for access identification, the BS sends a request message for certificate identification to an authentication server (AS) and then the AS sends a response message for certificate authentication to the BS which then verifies the legitimacy of the SS according to the response message for certificate authentication; if the SS is legal, an access identification response message is sent to the SS which then verifies the legitimacy of the BS according to the access identification response message; if the BS is legal, following steps are continued. The BS of the proposal of the invention only handles the request message for access identification of the SS to which an 'activating message for access identification' has been sent, thus effectively avoiding DOS attacks or DDOS attacks, realizing the identification and authentication of the SS and the BS and increasing the security.
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Description

technical field

[0001] The present invention relates to wireless network and information security, more specifically, to a secure access method of wireless metropolitan area network. Background technique

[0002] In the field of wireless metropolitan area network, the current mainstream technologies and standards are mainly IEEE802.16 series standards organized by IEEE. In the existing wireless metropolitan area network, when a subscriber station (Subscriber Station, SS for short) accesses a base station (Base Station, BS for short), steps such as authentication and key negotiation need to be performed. In the authentication process, the base station BS authenticates the subscriber station SS by authenticating the digital certificate of the subscriber station SS, so as to prevent the illegal subscriber station SS from accessing the wireless metropolitan area network. The specific authentication process includes:

[0003] 1) The subscriber station SS sends an access authent...

Claims

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