发明名称 |
Group subordinate terminal, group managing terminal, server, key updating system, and key updating method therefor |
摘要 |
Provided is a group subordinate terminal in a key updating system that includes a server and a group of terminals including: a group managing terminal; and group subordinate terminals including the group subordinate terminal, the group subordinate terminal comprising: a group withdrawal request processing unit which transmits a group withdrawal request to the group managing terminal in response to an instruction to update its apparatus-unique key, the group withdrawal request requesting for withdrawal of the group subordinate terminal from the group; an update apparatus-unique key requesting unit which requests for another apparatus-unique key by transmitting to the server a group withdrawal certificate indicating that the withdrawal of the group subordinate terminal from the group of terminals is completed through invalidation of its group key; and an update processing unit which updates the apparatus-unique key held in an apparatus-unique key holding unit to the another apparatus-unique key obtained from the server.
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申请公布号 |
US7995766(B2) |
申请公布日期 |
2011.08.09 |
申请号 |
US20080147126 |
申请日期 |
2008.06.26 |
申请人 |
PANASONIC CORPORATION |
发明人 |
SATO TAICHI;YOKOTA KAORU;MATSUZAKI NATSUME;FUTA YUICHI;INOUE TETSUYA;NONAKA MASAO |
分类号 |
H04L9/08 |
主分类号 |
H04L9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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