The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2012
Filed:
Jan. 09, 2009
Yi-hsiung Huang, Tainan, TW;
Lun-chia Kuo, Taichung, TW;
Wen-guey Tzeng, Hsinchu, TW;
Huan-chung Lin, Taichung, TW;
Chya-hung Tsai, Taipei, TW;
Yi-Hsiung Huang, Tainan, TW;
Lun-Chia Kuo, Taichung, TW;
Wen-Guey Tzeng, Hsinchu, TW;
Huan-Chung Lin, Taichung, TW;
Chya-Hung Tsai, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
Disclosed relates to an access control system and method based on hierarchical keys. The system comprises an access control server (ACS), a home gateway, and a plurality of sensor devices disposed on a home network. The ACS sets up user's access limits of authority and authorization verifier, and saves the related data of user's password and the user's access limits of authority. The gateway records the authority limits' level and the authority limits' key which are constructed based on a hierarchical key structure. When a user logs in the ACS to request access, an one-time communication key between the user and the home gateway is established by exchanging the ticket and the token that are issued by the ACS. This allows the user to access the information of the sensor devices.