演讲摘要：Blockchain-based systems suffer from the information isolation problem, hindering message transports, value exchanges, and collaborations among different blockchains. Cross-chain technology offers an effective solution, acting as a bridge for communication and coordination among isolated blockchain systems. However, existing cross-chain techniques encounter challenges in scalability, auditing, and privacy. In this talk, we present our recent works, Cross-Channel and zkCross, to address these issues. Specifically, Cross-Channel introduces a novel hierarchical channel structure with a hierarchical interaction protocol, a new hierarchical settlement protocol, and a smart general fair exchange protocol, to ensure scalability, fairness, and atomicity of cross-chain interactions; zkCross is built on a two-layer cross-chain architecture and employs two privacy-preserving protocols with an efficient auditing protocol for realizing privacy-preserving auditing. Open research challenges and future research directions will also be discussed.
讲者简介：成秀珍教授现担任山东大学计算机科学与技术学院院长、数链融合教育部工程中心主任，是IEEE Fellow、CSEE Fellow、AAIA Fellow、国家高层次海外人才、国家重点研发计划首席科学家、山东省“泰山学者”海外特聘专家。成教授现主要研究方向为区块链理论与应用、安全与隐私保护、物联网与边缘计算等。曾担任（或正在担任）多家期刊编委及多个国际会议主席，是中国计算机学会推荐国际学术会议WASA的创办者和国际期刊《High-Confidence Computing》的创刊主编。 H指数65，Google Scholar总引用1.8万+。
第六届CCF中国区块链技术大会
区块链系统隐私保护与密码学论坛
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