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Toward Authenticating the Master in the Modbus Protocol

机译:试图通过Modbus协议验证主站

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摘要

The power systems relying on the Modbus protocol for distributed control render their facilities vulnerable since there is no security consideration in the protocol. An intruder, without being authenticated, may harm the system by issuing malicious commands. This letter presents a cryptographic scheme that aims to enhance the Modbus protocol with authenticity, in which it is in- feasible for an attacker to maliciously forge as the master. Applying the concept of hash chains, the proposed design bases its security on the one-way property of cryptographic hash functions. Also, one compression function is devised to reduce the storage overhead to O(l) in terms of slave storage. Therefore, authenticity is achieved at low storage cost in the proposed scheme.
机译:依靠Modbus协议进行分布式控制的电力系统使其设施易受攻击,因为该协议中没有安全性考虑。未经身份验证的入侵者可能会通过发出恶意命令来损害系统。这封信提出了一种加密方案,旨在通过真实性增强Modbus协议,在这种方案中,攻击者恶意伪造主密钥是不可行的。应用散列链的概念,提出的设计将其安全性建立在密码散列函数的单向属性上。而且,设计了一种压缩功能以就从属存储而言将存储开销减少至O(1)。因此,在所提出的方案中以低存储成本实现了真实性。

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