Definition ∞ Set Byzantine Consensus refers to a class of distributed consensus algorithms designed to reach agreement among network participants even when a predetermined number of them are faulty or malicious. These protocols operate on the principle that honest nodes can agree on a common state despite the presence of Byzantine faults, which include arbitrary and malicious behavior. Unlike general Byzantine fault tolerance, “Set Byzantine” implies a specific, often smaller, known set of participants. The algorithms ensure data integrity and system liveness under these adverse conditions. This approach is critical for distributed system reliability.
Context ∞ Set Byzantine Consensus algorithms are frequently employed in permissioned blockchain networks or specific components of larger decentralized systems where the set of validators is known and controlled. While offering high transaction throughput and fast finality, they often involve a trade-off with the open participation and censorship resistance found in permissionless networks. The security of such systems depends on the assumption that the majority of the specified participants remain honest. This method is suitable for enterprise blockchain applications requiring high performance.
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