Storekeeper: A Security-Enhanced Cloud Storage Aggregation Service

摘要: Cloud storage services are currently a commodity that allows users to store data persistently, access the from everywhere, and share it with friends or co-workers. However, due proliferation of cloud accounts lack interoperability between services, managing sharing cloud-hosted files is nightmare for many users. To address this problem, specialized aggregator systems emerged provide global view all in their enable file different clouds. Such systems, however, have limited security: not only they fail end-to-end privacy providers, but require grant full privileges individual accounts. In paper, we present Storekeeper, privacy-preserving aggregation service enables on multi-user multi-cloud platforms while preserving confidentiality providers service. property, Storekeeper decentralizes most logic client side enabling security sensitive functions be performed trusted endpoints. This decentralization brings new challenges related update propagation, control, user authentication, key management addressed by Storekeeper. provided at low cost (7% average) when compared underlining providers.