| Police Engineering Construction Management is a comprehensive strong correlation wide systems engineering, and the military’s development is closely related to military needs with the military is closely related to the amount of information are particularly large. The construction industry is rapidly changing scientific and technological development of various systems become more perfect and the construction order.The Byzantine fault model is a general fault model, which can effectively describe the faulty scenarios. Firstly, existing Byzantine fault tolerance technologies focus on the protocol designs which mask the Byzantine faults. Secondly, the nodes with Byzantine faults can cheat non-faulty nodes by equivocation which makes upper layer applications or administrators unable to detect the presence of the Byzantine faults easily. Thirdly, the Byzantine faults can propagate across different modules, which make fault analysis and fault characterization a difficult job. Fourthly, most of the current fault tolerance protocols have the compatibility shortcomings in performance issue, complexity etc., which makes them unable to fulfill the runtime requirement of the benign fault tolerance. Fifth, most of the current Byzantine fault-tolerance technologies are academic-oriented and not easy to use in practice.Log-Keeper supports append-only log semantic, distributes verification objects with a reliable transport medium, and fulfill a tamper-evidence, self-certify, non-repudiation log. A tree-based approach IndexTree is designed to fulfill frequent integrity verification, which reduces the proof size by involving intermediate tree nodes in the integrity proof.We propose a quorum-based fault detection method named B-Detector which targets at the difficulties in the Byzantine fault detection. We adopt B-Detector into a distributed optimization system for aircraft design named AGrid and prove the effectiveness of B-Detector in the real application system. |
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