Secure encrypted data deduplication with ownership proof and user revocation

• Main Authors: DING, Wenxiu, YAN, Zheng, DENG, Robert H.
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2017
• Subjects: Deduplication; Homomorphic encryption; Proxy re-encryption; User revocation; Databases and Information Systems; Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/3788; https://ink.library.smu.edu.sg/context/sis_research/article/4790/viewcontent/Secure_Encrypted_Data_Deduplication_with_Ownership_Proof_and_User_Revocation.pdf
• Institution: Singapore Management University

Cloud storage as one of the most important cloud services enables cloud users to save more data without enlarging its own storage. In order to eliminate repeated data and improve the utilization of storage, deduplication is employed to cloud storage. Due to the concern about data security and user privacy, encryption is introduced, but incurs new challenge to cloud data deduplication. Existing work cannot achieve flexible access control and user revocation. Moreover, few of them can support efficient ownership proof, especially public verifiability of ownership. In this paper, we propose a secure encrypted data deduplication scheme with effective ownership proof and user revocation. We evaluate its performance and prove its security. The simulation results show that our scheme is efficient and effective for potential practical employment.