DSB-SEIS: a deduplicating secure backup system with encryption intensity selection

Abstract

Cloud computing is an emerging service that enables users to store and manage their data easily at a low cost. We propose a Deduplicating Secure Backup System with Encryption Intensity Selection (DSB-SEIS) that combines features to amend security and performance of cloud-based backup services. Our scheme introduces the concept of encryption intensity selection to cloud backup systems, which allows users to select the encryption intensity of their files. We also combine features such as deduplication, assured deletion, and multi-aspect awareness to further enhance our scheme. The DSB-SEIS performance is measured over an OpenStack cloud installed on CloudLab resources demonstrating that DSB-SEIS can improve the backup service.