Trusted-Committee-Based Secure and Scalable BFT Consensus for Consortium Blockchain

【Author】 Feng, Liaoliao; Ding, Yan; Tan, Yusong; Fu, Xiang; Wang, Keming; Chang, Junsheng

【Source】2022 18TH INTERNATIONAL CONFERENCE ON MOBILITY, SENSING AND NETWORKING, MSN

【影响因子】

【Abstract】Compared with public blockchain, consortium blockchain is more secure and controllable deployed in an enterprise scenario. Byzantine fault tolerance (BFT) consensus is widely applied in consortium blockchain. Although PBFT is the most classic practical BFT consensus with message complexity O(n(2)), it still faces some security threats and has low consensus efficiency. To address these issues, we propose a secure and trusted BFT ((SBFT)-B-2) consensus based on trusted committees. (SBFT)-B-2 generates a trusted anonymous number using trust execution environment (TEE) for each server node and selects committees by pseudo-random algorithm. (SBFT)-B-2 can efficiently reach consensus by the committees with an O(m*n) message complexity. In addition, correctness analysis proves that (SBFT)-B-2 can resist more attacks than traditional BFT consensus and tolerate 1/2 byzantine server nodes. Results further demonstrate the efficiency of the simulated (SBFT)-B-2 implementation.

【Keywords】byzantine fault tolerance; anonymity; committee; trust execution environment; consortium blockchain

【发表时间】2022

【收录时间】2023-06-12

【文献类型】实验仿真

【主题类别】

区块链技术-核心技术-共识机制