基于主观逻辑和拍卖算法的公证人组跨链交易机制  

Cross⁃chain trading mechanism of notary group based on subjective logic and auction algorithm

作　　者：廖政 魏博众 罗健炜 Liao Zheng;Wei Bozhong;Luo Jianwei(School of Automation,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学自动化学院,广州510006

出　　处：《现代计算机》2023年第10期34-41,80,共9页Modern Computer

摘　　要：作为区块链领域研究的热点,跨链技术一直备受关注。公证人机制作为一种典型的跨链方法,会出现“公证人节点职能集中化”“节点信誉度不高”“中间人费用过高”等问题,对此提出了一种基于主观逻辑的公证人组跨链交易机制。通过引入主观逻辑的方法对单链上节点间的相互评估以及担任正式公证人后的交易信息进行评估,筛选出高信誉度的公证人组,使得公证人机制更为安全可靠。同时为了合理化公证人充当中间人时的费用,提出了一种基于反向维克里拍卖算法的定价机制,降低了公证人节点充当中间人时的价格。实验结果表明,相对于传统的公证人机制,该跨链交易的机制具有更好的安全性和更低的中间人费用。As a hot spot in the field of blockchain research,cross-chain technology has always attracted much attention.As a typical cross-chain method,the notary mechanism will have problems such as“centralized functions of notary nodes”,“low node credibility”,and“excessive intermediary fees”,for which a cross-chain transaction mechanism of notary group based on subjective logic is proposed.By introducing the method of subjective logic,the mutual evaluation between nodes on the single chain and the transaction information after serving as a formal notary are evaluated,and the notary public group with high credibility is screened out,making the notary mechanism more secure and reliable.At the same time,in order to rationalize the cost of notaries acting as intermediaries,a pricing mechanism based on the reverse Vickrey auction algorithm is proposed,which reduces the price when notary nodes act as intermediaries.Experimental results show that compared with the traditional notary mechanism,the cross-chain transaction mechanism has better security and lower intermediary fees.

关 键 词：公证人机制 区块链 跨链 主观逻辑 信誉值排序 拍卖算法 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]