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首页> 外文会议>2015 IEEE Conference on Communications and Network Security >PHYVOS: Physical layer voting for secure and fast cooperation
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PHYVOS: Physical layer voting for secure and fast cooperation

机译：PHYVOS：物理层投票确保安全，快速的合作

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摘要

Distributed wireless networks often employ voting to perform critical network functions such as fault-tolerant data fusion, cooperative sensing, and reaching consensus. Voting is implemented by exchanging messages with a fusion center or just between the participants. However, the communication and delay overheads of message-based voting can be prohibitive when voting is frequent. Additional overheads are incurred if voter authentication and vote integrity verification are required. In this paper, we propose a fast PHY-layer voting scheme called PHYVOS, which significantly reduces the voting overhead. In PHYVOS, wireless devices transmit their votes to a fusion center simultaneously, by exploiting the subcarrier orthogonality in OFDM and without explicit messaging. We show that PHYVOS is secure against attackers that attempt to manipulate the voting outcome. Security is achieved without employing cryptography-based authentication and message integrity schemes. We analytically evaluate the voting robustness as a function of PHY-layer parameters. We further discuss practical implementation challenges of PHYVOS related to multi-device frequency and time synchronization. Finally, we present a prototype implementation of PHYVOS on the USRP platform.
机译：分布式无线网络通常使用表决来执行关键的网络功能，例如，容错数据融合，协作感测和达成共识。通过与融合中心或参与者之间交换消息来实现投票。但是，频繁投票时，基于消息的投票的通信和延迟开销可能会令人望而却步。如果需要投票者身份验证和投票完整性验证，则会产生额外的开销。在本文中，我们提出了一种称为PHYVOS的快速PHY层投票方案，该方案可显着减少投票开销。在PHYVOS中，无线设备通过利用OFDM中的子载波正交性而无需显式消息传递，同时将其选票发送到融合中心。我们证明，PHYVOS对于试图操纵投票结果的攻击者是安全的。无需采用基于密码的身份验证和消息完整性方案即可实现安全性。我们通过分析评估投票稳健性与PHY层参数的关系。我们进一步讨论了与多设备频率和时间同步有关的PHYVOS的实际实施挑战。最后，我们介绍了USRP平台上PHYVOS的原型实现。

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