The existing cryptosystem based approaches for privacy-preserving consensus of networked systems are usually limited to those with undirected topologies. This paper proposes a new privacy-preserving algorithm for networked systems with directed topologies to reach confidential consensus. As a prerequisite for applying the algorithm, a structural consensus problem is formulated and the solvability conditions are discussed for an explicitly constructed controller. The controller is then implemented with encryption to achieve consensus while avoiding individual's information leakage to external eavesdroppers and/or malicious internal neighbors.

翻译：现有的基于加密系统的网络系统保密共识方法通常仅限于那些具有非定向地名录的系统。本文件提议为具有定向地名录的网络系统提供一种新的隐私保护算法,以便达成保密的共识。作为应用算法的先决条件,将形成一个结构性的共识问题,并讨论一个明确构建的控制器的可溶性条件。然后用加密执行控制器,以达成共识,同时避免个人信息渗漏到外部窃听器和(或)恶意内部邻居。