Strong Byzantine Agreement refers to a consensus state in a distributed system where all honest participants not only agree on the same value or sequence of transactions but also know that all other honest participants have agreed. This robust form of agreement ensures high confidence in the finality and integrity of data, even when a portion of the network acts maliciously. It is a more stringent condition than simple Byzantine agreement, offering enhanced guarantees against divergent states.
Context
Strong Byzantine Agreement is a key concept in the theoretical foundations and practical implementations of highly secure and fault-tolerant distributed ledgers, often appearing in academic research and advanced protocol discussions. News reports might reference it when evaluating the security properties of new consensus algorithms designed for critical applications. Achieving this level of agreement is vital for systems requiring absolute data consistency and resistance to manipulation.
The STRONG protocol resolves the quadratic communication cost of Byzantine Agreement by achieving adaptive word complexity, making consensus practically viable for large-scale distributed systems.
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