关键词: 区块链, 预言机, Schnorr门限签名, 线性秘密共享, 聚合签名

Abstract: A blockchain oracle scheme base on Schnorr threshold signatures is proposed to address the inefficiency of blockchain interactions with offchain data when using oracles as intermediaries. The scheme aggregates multiple signatures based on the Schnorr threshold signature combined with the linear secret sharing algorithm. Additionally, it employs multiple oracles to obtain data information in the physical world, and achieves efficient and highly reliable data transmission from the oracle to the blockchain. The analyses and experiments demonstrate that the scheme offers good security and performance.

Key words: blockchain, oracle, Schnorr threshold signature, linear secret sharing scheme, aggregated signature