A threshold signature is a cryptographic scheme that requires a minimum number of authorized participants, or a “threshold,” to collectively sign a transaction or message. No single participant can generate the signature alone. This distributed control mechanism enhances security by eliminating single points of failure and reducing the risk of private key compromise. It functions by distributing parts of a secret key among multiple parties.
Context
Threshold signatures are frequently discussed in crypto news regarding enhanced security solutions for digital asset custody, multi-signature wallets, and decentralized governance. They offer a robust alternative to traditional multi-sig approaches by producing a single, compact signature on-chain. The relevance to digital assets includes improving the security of large institutional holdings and enabling more secure cross-chain operations.
A new leaderless BFT protocol achieves optimal n ≥ 3t+1 resilience and two-round finality by concurrently processing transactions with a novel threshold signature scheme.
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