arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.11778cs.CRcs.ITcs.NImath.IT
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从无线通信角度重新思考物联网时代的区块链

Rethinking Blockchains in the Internet of Things Era from a Wireless Communication Perspective

Hongxin Wei, Wei Feng, Yunfei Chen, Cheng-Xiang Wang, Ning Ge

摘要:

由于物联网(IoT)的快速发展,大量设备连接到互联网。对于物联网网络中的这些分布式设备,如何确保其安全性和隐私性成为一个重大挑战。区块链技术为保护物联网网络的数据完整性、来源、隐私和一致性提供了一个有前途的解决方案。在区块链中,沟通是分布在系统中的参与者达成共识的先决条件。然而,在物联网网络中,大多数设备通过无线链路进行通信,而无线链路并不总是可靠的。因此,物联网设备的通信可靠性影响系统安全性。在本文中,我们通过考虑通信可靠性来重新思考区块链中通信和计算的角色。我们分析了区块链安全中通信可靠性和计算能力之间的权衡,并给出了在给定通信可靠性的情况下进行攻击所需的计算能力的下限。仿真结果表明,对抗节点可以通过阻止来自其他节点的块的传播,成功地篡改一个块与较少的计算能力。

英文摘要:

Due to the rapid development of Internet of Things (IoT), a massive number of devices are connected to the Internet. For these distributed devices in IoT networks, how to ensure their security and privacy becomes a significant challenge. The blockchain technology provides a promising solution to protect the data integrity, provenance, privacy, and consistency for IoT networks. In blockchains, communication is a prerequisite for participants, which are distributed in the system, to reach consensus. However, in IoT networks, most of the devices communicate through wireless links, which are not always reliable. Hence, the communication reliability of IoT devices influences the system security. In this article, we rethink the roles of communication and computing in blockchains by accounting for communication reliability. We analyze the tradeoff between communication reliability and computing power in blockchain security, and present a lower bound to the computing power that is needed to conduct an attack with a given communication reliability. Simulation results show that adversarial nodes can succeed in tampering a block with less computing power by hindering the propagation of blocks from other nodes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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