摘要
针对目前区块链系统跨链互操作难问题而导致的“信息与价值孤岛”现象,提出一种基于联盟自治的区块链跨链机制。该机制的核心思想是以链治链,通过构建一条由多方共治的中继联盟链来管理跨链网络,用于解决不同区块链系统之间的数据共享、价值流通与业务协同问题。首先,提出了一个基于中继模式的跨链系统为同异构区块链系统提供交互服务;其次,详细设计了中继联盟链,设定了应用链及其用户参与跨链系统的规则;然后,总结了跨链交互的基本类型并制定了基于智能合约的跨链交互实现流程;最后,通过多组实验验证了跨链方案的可行性,评估了跨链系统的性能指标,并且分析了整个跨链网络的安全性。仿真结果与安全性分析证明,所提机制中的通道分配策略与出块权分配方案具有实际可行性,当涉及资产交易时,该机制的吞吐量最高可达到758 TPS,而不涉及资产交易时的吞吐量最高可达到960 TPS,且拥有高级别的安全性与粗细粒度兼具的隐私保护机制。基于联盟自治的区块链跨链机制可提供安全高效的跨链服务,适用于目前大多数跨链场景。
To deal with the phenomenon of"information and value islands"caused by the lack of interoperation among the increasingly emerging blockchain systems,a federated⁃autonomy⁃based cross⁃chain scheme was proposed.The elemental idea of this scheme is to form a relay alliance chain maintained by participated blockchain systems using blockchain philosophy,which is supposed to solve the data sharing,value circulation and business collaboration problems among different blockchain systems.Firstly,a relay mode based cross⁃chain structure was proposed to provide interoperation services for heterogeneous blockchain systems.Secondly,the detailed design of the relay alliance chain was presented as well as the rules for the participated blockchain systems and their users.Then,the basic types of cross⁃chain interactions were summarized,and a process for implementing cross⁃chain interoperability based on smart contracts were designed.Finally,through multiple experiments,the feasibility of the cross⁃chain scheme was validated,the performance of the cross⁃chain system was evaluated,and the security of the whole cross⁃chain network was analyzed.Simulation results and security analysis prove that the proposed channel allocation strategy and block⁃out right allocation scheme of the proposed scheme are practically feasible,the throughput of the proposed shceme can reach up to 758 TPS(Transactions Per Second)when asset transactions are involved,and up to 960 TPS when asset transactions are not involved;the proposed scheme has high⁃level security and coarse⁃and fine⁃grained privacy protection mechanism.The proposed federated⁃autonomy⁃based cross⁃chain scheme for blockchain can provide secure and efficient cross⁃chain services,which is suitable for most of the current cross⁃chain scenarios.
作者
郑建辉
林飞龙
陈中育
胡兆龙
唐长兵
ZHENG Jianhui;LIN Feilong;CHEN Zhongyu;HU Zhaolong;TANG Changbing(College of Mathematics and Computer Science,Zhejiang Normal University,Jinhua Zhejiang 321004,China;College of Physics and Electronic Information Engineering,Zhejiang Normal University,Jinhua Zhejiang 321004,China)
出处
《计算机应用》
CSCD
北大核心
2022年第11期3444-3457,共14页
journal of Computer Applications
基金
浙江省自然科学基金资助项目(LY22F030006)。
关键词
区块链
跨链互操作
信息与价值孤岛
联盟自治
中继联盟链
blockchain
cross⁃chain interoperability
information and value island
federated autonomy
relay alliance chain
