New Construction of Client Ciphertext Deduplication Scheme
GONG Jian,WANG Shao-hui,LI Can-can
(School of Computer Science,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)(Key Laboratory of Jiangsu High Technology Research for Wireless Sensor Network,Nanjing 210003,China)(Jiangsu Key Laboratory of Big Data Security and Intelligent Processing,Nanjing 210003,China)
Abstract：Cloud storage allows users to maintain more data without expanding their storage,and the introduction of the client-based deduplication technology enables users to effectively delete duplicate data locally,which will greatly improve cloud storage utilization and save communication overhead.In this paper,utilizing the idea of paper［10］ to randomize convergent key based on blind signature,a new client-based ciphertext deduplication scheme is proposed.In the new scheme,the duplication verification tag and proof of ownership procedure can resist brute-force dictionary attack effectively,and a flexible encryption key management method is presented based on three-party key exchange scheme.Additionally,the experimental results reveal the new scheme can provide the users with better storage and computation performance.
贡坚,王少辉,李灿灿. 客户端密文去重方案的新设计[J]. 小型微型计算机系统, 2020, 41(1): 139-143.
GONG Jian,WANG Shao-hui,LI Can-can. New Construction of Client Ciphertext Deduplication Scheme. Journal of Chinese Computer Systems, 2020, 41(1): 139-143.