面向电力调度指令的区块链隐私可追踪存证方案OA北大核心CSTPCD

Solving the challenge of accountability for objection scheduling is an effective method to realize the reliable storage of power-dispatch instructions on blockchain.Power dispatching involves highly sensitive content such as command initiators,receivers,and dispatching commands.The dispatching-command storage must verify the compliance of the recipients and dispatch commands while ensuring the privacy of sensitive content,as well as track the initiator when an objection to dispatch occurs.Most existing blockchain storage and certificate schemes adopt a centralized management method,which is contrary to the blockchain-distributed setting.Based on the specific requirements of power-dispatching storage,a blockchain certificate-storage scheme is designed to support the privacy and traceability of the dispatcher's identity,the privacy and compliance of the receiver's identity,and the dispatching instructions.The recipient identity and scheduling instruction are encoded and stored on the blockchain after being encrypted by the commitment and providing the corresponding zero-knowledge proof to ensure compliance with the commitment ciphertext.The classical group-signature algorithm is improved using a secret-sharing scheme,and the number of group administrators is expanded from one party to multiple parties without affecting the efficiency of the signature and verification.When objection scheduling occurs,multiple group administrators jointly track the identity of the objection-scheduling initiator as well as reveal the receiver identity and scheduling-instruction information.Theoretical analysis and experimental results show that the scheme demonstrates high safety and execution efficiency,thus satisfying the implementation requirements.