Abstract
The accelerated digitalisation of society along with technological evolution have extended the geographical span of cyber-physical systems. Two main threats have made the reliable and real-time control of these systems challenging: (i) uncertainty in the communication infrastructure induced by scale, and heterogeneity of the environment and devices; and (ii) targeted attacks maliciously worsening the impact of the above-mentioned communication uncertainties, disrupting the correctness of real-time applications. This paper addresses those challenges by showing how to build distributed protocols that provide both real-time with practical performance, and scalability in the presence of network faults and attacks, in probabilistic synchronous environments. We provide a suite of real-time Byzantine protocols, which we prove correct, starting from a reliable broadcast protocol, called PISTIS, up to atomic broadcast and consensus. This suite simplifies the construction of powerful distributed and decentralized monitoring and control applications, including state-machine replication. Extensive empirical simulations showcase PISTIS's robustness, latency, and scalability. For example, PISTIS can withstand message loss (and delay) rates up to 50% in systems with 49 nodes and provides bounded delivery latencies in the order of a few milliseconds.
Original language | English |
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Article number | 9347806 |
Pages (from-to) | 2277-2290 |
Journal | IEEE Transactions on Parallel and Distributed Systems |
Volume | 32 |
Issue number | 9 |
Early online date | 4 Feb 2021 |
DOIs | |
Publication status | E-pub ahead of print - 4 Feb 2021 |
Keywords
- Byzantine resilience
- Real-time distributed systems
- atomic broadcast
- consensus
- intrusion tolerance
- probabilistic losses
ASJC Scopus subject areas
- Signal Processing
- Hardware and Architecture
- Computational Theory and Mathematics