Secure Deduplication with Dynamic Updates in Multi-Tenant Cloud Environment

Abstract

Cloud storage service providers accommodate customers by offering adequate storage based on customer requirements. Multi-tenant architecture to provide low-cost resource provision. In a multitenant system single instance shares with multiple customers, similar applications data has been used multiple customers so Deduplication techniques eliminate redundant data to improve storage efficiency and Bandwidth. To improve the confidentiality of the user privacy data, convergent encryption with the deduplication techniques has been proposed to encrypt the user data before uploading it to the third-party CS Sometimes Confidentiality of the user data leads to issues with this deduplication method. To overcome these issues this paper proposed dynamic ownership management of server-side deduplication with the blowfish encryption algorithm. In this model to support tenant block-level deduplication. The proposed method computational storage efficiency and security level.