Randomized protocols incorporate elements of chance or unpredictability into their operational logic to achieve specific system properties. These protocols often use random selection for roles like block proposers or validators, which helps to improve fairness, prevent collusion, and enhance security against malicious actors. By introducing randomness, they make it harder for adversaries to predict future network states or target specific participants. This approach contributes to the robustness and decentralization of distributed systems.
Context
Randomized protocols are a key design component in many next-generation blockchain consensus mechanisms, particularly those aiming for greater decentralization and security. Discussions often center on the quality and verifiability of the randomness sources used, as biases can undermine the protocol’s integrity. Continued advancements seek to develop more secure and efficient random beacon implementations to fortify the fairness and resistance to attack in decentralized networks.
This research establishes fundamental communication lower bounds for randomized Byzantine broadcast in dishonest-majority networks, framing the ultimate scalability limits.
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