Research: Communication Lower Bounds for Multivalued Consensus
chaumian · x · 2026-08-19
The paper 'Multivalued Consensus: General Adversaries Require More Communication' studies fault-tolerant consensus against general adversaries. Using structures based on finite projective geometry, the authors prove lower bounds on communication complexity for interactive consistency, byzantine agreement, and broadcast. The work highlights that specific adversary structures significantly increase expected communication costs, even with cryptography.
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