A Byzantine Fault Tolerant Distributed Commit Protocol

Details A Byzantine Fault Tolerant Distributed Commit Protocol A Byzantine Fault Tolerant Distributed Commit Protocol

2006-12-18

arxiv.org/abs/cs/0612083v3

Computer Science

Distributed, Parallel, and Cluster Computing

To appear in the proceedings of the 3rd IEEE International Symposium on Dependable, Autonomic and Secure Computing, 2007

Scientific paper

In this paper, we present a Byzantine fault tolerant distributed commit protocol for transactions running over untrusted networks. The traditional two-phase commit protocol is enhanced by replicating the coordinator and by running a Byzantine agreement algorithm among the coordinator replicas. Our protocol can tolerate Byzantine faults at the coordinator replicas and a subset of malicious faults at the participants. A decision certificate, which includes a set of registration records and a set of votes from participants, is used to facilitate the coordinator replicas to reach a Byzantine agreement on the outcome of each transaction. The certificate also limits the ways a faulty replica can use towards non-atomic termination of transactions, or semantically incorrect transaction outcomes.

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