发明名称 |
Encrypted communication system, communication status management server, encrypted communication method, and communication status management method |
摘要 |
An encrypted communication system is provided, in which an encryption key for use in encrypted communication and settings information for the encrypted communication are distributed to each of a plurality of communication devices performing encrypted communication within a group, and in which traffic generated by distributing the encryption key and the like can be reduced. In the encrypted communication system according to the present invention, information including a key for use in the intra-group encrypted communication or a seed which generates the key is distributed to the communication devices belonging to the group that are participating (e.g., logged in) in the intra-group encrypted communication. |
申请公布号 |
US8218769(B2) |
申请公布日期 |
2012.07.10 |
申请号 |
US20070711892 |
申请日期 |
2007.02.28 |
申请人 |
TAKATA OSAMU;KAJI TADASHI;FUJISHIRO TAKAHIRO;HOSHINO KAZUYOSHI;TAKEUCHI KEISUKE;HITACHI, LTD. |
发明人 |
TAKATA OSAMU;KAJI TADASHI;FUJISHIRO TAKAHIRO;HOSHINO KAZUYOSHI;TAKEUCHI KEISUKE |
分类号 |
H04K1/00 |
主分类号 |
H04K1/00 |
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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