发明名称 |
MANAGING DEVICE KEYS IN CRYPTOGRAPHIC COMMUNICATION |
摘要 |
To delegate authority for cryptographic communication without increasing the risk of leaking a device key. A system and method including a first communication apparatus and a managing apparatus allowing the first communication apparatus to perform cryptographic communication with an external at least one second communication apparatus. The managing apparatus includes: storing a first device key shared with the second communication apparatus; generating a computation by passing the first device key read from the stored keys to a keyed one-way function, to generate a computed result as a second device key; and outputting the second device key and a key of the one-way function to the first communication apparatus. The first communication apparatus transmits a key of a one-way function to the second communication apparatus causing the second communication apparatus to perform a computation which generates a second device key, and which performs a cryptographic communication with a second communication apparatus.
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申请公布号 |
US2008075291(A1) |
申请公布日期 |
2008.03.27 |
申请号 |
US20070853932 |
申请日期 |
2007.09.12 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
KAMIJOH KOHICHI;SAKAMOTO MASAHARU |
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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