Self-stabilizing Byzantine Multivalued Consensus: (extended abstract)
Paper i proceeding, 2024

Consensus, abstracting a myriad of problems in which processes have to agree on a single value, is one of the most celebrated problems of fault-tolerant distributed computing. Consensus applications include fundamental services for the environments of the Cloud and Blockchain, and in such challenging environments, malicious behaviors are often modeled as adversarial Byzantine faults. At OPODIS 2010, Mostéfaoui and Raynal (in short MR) presented a Byzantine-tolerant solution to consensus in which the decided value cannot be a value proposed only by Byzantine processes. MR has optimal resilience coping with up to t < n/3 Byzantine nodes over n processes. MR provides this multivalued consensus object (which accepts proposals taken from a finite set of values) assuming the availability of a single Binary consensus object (which accepts proposals taken from the set {0, 1}). This work, which focuses on multivalued consensus, aims at the design of an even more robust solution than MR. Our proposal expands MR's fault-model with self-stabilization, a vigorous notion of fault-tolerance. In addition to tolerating Byzantine, self-stabilizing systems can automatically recover after the occurrence of arbitrary transient-faults. These faults represent any violation of the assumptions according to which the system was designed to operate (provided that the algorithm code remains intact). To the best of our knowledge, we propose the first self-stabilizing solution for intrusion-tolerant multivalued consensus for asynchronous message-passing systems prone to Byzantine failures. Our solution has a Math 1 stabilization time from arbitrary transient faults.

Författare

Romaric Duvignau

Nätverk och System

Michel Raynal

Institut de Recherche en Informatique et Systemes Aleatoires

Elad Schiller

Nätverk och System

ACM International Conference Proceeding Series

12-21
9798400716737 (ISBN)

25th International Conference on Distributed Computing and Networking, ICDCN 2024
Chennai, India,

Ämneskategorier

Datorteknik

Inbäddad systemteknik

Datavetenskap (datalogi)

Datorsystem

DOI

10.1145/3631461.3631540

ISBN

9798400716737

Mer information

Senast uppdaterat

2024-02-19