发明申请
- 专利标题： Key distribution system
- 专利标题（中）： 关键配电系统
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申请号： US10569961申请日： 2005-01-31
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公开(公告)号： US20090238368A1公开(公告)日： 2009-09-24
- 发明人: Masao Nonaka , Yuichi Futa , Motoji Ohmori , Shigeru Yamada , Tetsuya Inoue , Yoji Kumazaki , Wataru Kuroiwa , Shinichi Oi , Osamu Yoshida
- 申请人： Masao Nonaka , Yuichi Futa , Motoji Ohmori , Shigeru Yamada , Tetsuya Inoue , Yoji Kumazaki , Wataru Kuroiwa , Shinichi Oi , Osamu Yoshida
- 申请人地址： JP OSAKA
- 专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人地址： JP OSAKA
- 优先权： JP2004-025386 20040202
- 国际申请： PCT/JP05/01359 WO 20050131
- 主分类号： H04L9/08
- IPC分类号： H04L9/08 ; H04L9/06
摘要：
The cloning source of an authorized receiving device cannot be identified. A key distribution system 1 concerning the present invention includes: a communication channel 10; a key distribution center 11; a server 12; and receiving devices 13a to 13n. The key distribution center 11 distributes, to the server 12, the information necessary for distributing shared keys SK to the receiving devices 13a to 13n, and distributes the individual information group EMMG necessary for receiving the shared keys SK from the server 12. The server 12 generates the shared keys SK, generates the common information ECM based on the shared keys SK and the system secret variable group set SPGS, and distributes the common information ECM to the receiving devices 13a to 13n. The receiving devices 13a to 13n obtain the shared keys SK based on the individual information group EMMG and the common information ECM and outputs them to outside.