发明申请
US20110099362A1 INFORMATION PROCESSING DEVICE, ENCRYPTION KEY MANAGEMENT METHOD, COMPUTER PROGRAM AND INTEGRATED CIRCUIT
审中-公开
信息处理设备，加密密钥管理方法，计算机程序和集成电路
- 专利标题： INFORMATION PROCESSING DEVICE, ENCRYPTION KEY MANAGEMENT METHOD, COMPUTER PROGRAM AND INTEGRATED CIRCUIT
- 专利标题（中）： 信息处理设备，加密密钥管理方法，计算机程序和集成电路
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申请号： US12995008申请日： 2009-06-04
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公开(公告)号： US20110099362A1公开(公告)日： 2011-04-28
- 发明人: Tomoyuki Haga , Kenneth Alexander Nicolson , Hideki Matsushima , Takayuki Ito , Hisashi Takayama , Manabu Maeda
- 申请人： Tomoyuki Haga , Kenneth Alexander Nicolson , Hideki Matsushima , Takayuki Ito , Hisashi Takayama , Manabu Maeda
- 优先权： JP2008-163071 20080623
- 国际申请： PCT/JP2009/002531 WO 20090604
- 主分类号： H04L9/08
- IPC分类号： H04L9/08 ; G06F15/177
摘要：
For the keys in a key tree group composed of root keys for each of multiple stakeholders, a shared key is generated between the multiple stakeholders, and access restrictions with respect to the generated shared key are flexibly set. A shared key control unit and a tamper-resistant module are provided for each of the multiple stakeholders. The shared key is set based on stakeholder dependency relationships. After the shared key is set, access to the shared key is controlled so that access is not possible by malicious stakeholders, so as to maintain the security level.
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