发明授权
- 专利标题: Communication system and device
- 专利标题(中): 通信系统和设备
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申请号: US12926451申请日: 2010-11-18
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公开(公告)号: US08503677B2公开(公告)日: 2013-08-06
- 发明人: Taketsugu Yao , Kiyoshi Fukui , Jun Nakashima
- 申请人: Taketsugu Yao , Kiyoshi Fukui , Jun Nakashima
- 申请人地址: JP Tokyo
- 专利权人: Oki Electric Industry Co., Ltd.
- 当前专利权人: Oki Electric Industry Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Rabin & Berdo, P.C.
- 优先权: JP2010-018791 20100129
- 主分类号: H04L29/06
- IPC分类号: H04L29/06
摘要:
A communication device receives secure communication frames on which a security transform has been performed to permit authentication. The communication device maintains an authentication history and a local time varying parameter. In multi-hop communication, the communication device provisionally verifies the freshness of a received secure communication frame by verifying that identifying information extracted from the frame is not already present in the authentication history and that a received time varying parameter extracted from the frame is not older than the local time varying parameter by more than a certain margin. If these freshness tests both pass, the frame is authenticated. If authentication succeeds, the frame is transmitted on the next hop without performance of a new security transform.
公开/授权文献
- US20110188653A1 Communication system and device 公开/授权日:2011-08-04
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