Differentially Authorized Deduplication System Based on Blockchain

• 作者: ZHAO Tian LI Hui YANG Xin WANG Han ZENG Ming GUO Haisheng WANG Dezheng
• 来源期刊: 中兴通讯技术（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: Research Paper
• 页码范围: 67-76
• 页数: 10页
• 语种: 英文
• DOI: 10.12142/ZTECOM.202102009

摘要

In architecture of cloud storage, the deduplication technology encrypted with the convergent key is one of the important data compression technologies, which effectively im?proves the utilization of space and bandwidth. To further refine the usage scenarios for vari?ous user permissions and enhance user's data security, we propose a blockchain-based dif?ferential authorized deduplication system. The proposed system optimizes the traditional Proof of Vote (PoV) consensus algorithm and simplifies the existing differential authoriza?tion process to realize credible management and dynamic update of authority. Based on the decentralized property of blockchain, we overcome the centralized single point fault prob?lem of traditional differentially authorized deduplication system. Besides, the operations of legitimate users are recorded in blocks to ensure the traceability of behaviors.