发明申请
US20090316909A1 UTILIZATION APPARATUS, SERVICER APPARATUS, SERVICE UTILIZATION SYSTEM, SERVICE UTILIZATION METHOD, SERVICE UTILIZATION PROGRAM, AND INTEGRATED CIRCUIT
审中-公开
使用设备，服务器设备，服务使用系统，服务使用方法，服务使用程序和集成电路
- 专利标题： UTILIZATION APPARATUS, SERVICER APPARATUS, SERVICE UTILIZATION SYSTEM, SERVICE UTILIZATION METHOD, SERVICE UTILIZATION PROGRAM, AND INTEGRATED CIRCUIT
- 专利标题（中）： 使用设备，服务器设备，服务使用系统，服务使用方法，服务使用程序和集成电路
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申请号： US12132084申请日： 2008-06-03
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公开(公告)号： US20090316909A1公开(公告)日： 2009-12-24
- 发明人: Yuichi Futa , Masao Nonaka , Taichi Sato , Kaoru Yokota , Tetsuya Inoue , Natsume Matsuzaki
- 申请人： Yuichi Futa , Masao Nonaka , Taichi Sato , Kaoru Yokota , Tetsuya Inoue , Natsume Matsuzaki
- 优先权： JP2007-147655 20070604
- 主分类号： H04L9/08
- IPC分类号： H04L9/08 ; H04L9/30
摘要：
Provided are a utilization apparatus, a server apparatus, and a key utilization system which enable the utilization apparatus to control deletion of the old key without using a secure clock and allow encrypted communications irrespective of whether the accessed server has updated its key or not. In key utilization system 1, one or more server apparatuses 5-1 to 5-n each provide service to an apparatus having an apparatus key corresponding with a server key. Update apparatus 2 distributes an update server key to each server apparatus and a new apparatus key to key utilization apparatus 3. CRL distribution apparatus 4 distributes to key utilization apparatus 3 a CRL indicating one or more server apparatuses which have completed key-updating. Key utilization apparatus 3 holds both the old and new apparatus key, judges whether the server apparatuses monitored using the CRL have completed key-updating, and if affirmative, deletes the old apparatus key.
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