Delegated Proof of Secret Sharing: A Privacy-Preserving Consensus Protocol Based on Secure Multiparty Computation for IoT Environment

With the rapid advancement and wide application of blockchain technology, consensus protocols, which are core part systems, along with privacy issues, have drawn much attention from researchers. A key aspect in is sensitive content transactions permissionless blockchain. Meanwhile, some applications, such as cryptocurrencies, based on low-efficiency high-cost may not be practical feasible for other applications. In this paper, we propose an efficient privacy-preserving protocol, called Delegated Proof Secret Sharing (DPoSS), inspired by secure multiparty computation. Specifically, DPoSS first uses polynomial interpolation to select a dealer group many nodes maintain system, dealers take turns pack new block. addition, since sensitive, our proposed design utilizes verifiable secret sharing protect transmission defend against malicious attacks. Extensive experiments show that protocol achieves fairness during process reaching consensus.