报告题目：去中心化存储网络

演讲摘要：Decentralized Storage Networks (DSNs) can gather storage resources from mutually untrusted providers and form worldwide decentralized file systems. Compared to traditional storage networks, DSNs are built on top of blockchains, which can incentivize service providers to contribute their unused storage spaces and ensure strong security. However, pioneering DSNs still face challenges in many aspects such as data privacy, proof of storage complexity, multi-version file management, and file indexing. In this talk, we will report two of our recent works, namely FileDAG and FileDES, which intend to overcome the above problems in designing DSNs. Specifically, FileDAG is built on a DAG-based blockchain to support file-level deduplication in storing multi-versioned files while relying on a two-layer DAG-based blockchain ledger to provide flexible and storage-saving file indexing; FileDES (Decentralized Encrypted Storage) extends FileDAG from multiple aspects, incorporating data security, system scalability, and proof succinctness respectively with file encryption, a lightweight proof of encrypted storage algorithm (PoES), and a succinct multi-version verification method. 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64，Google Scholar总引用超过1.8万。