A Private Walk in the Clouds: Using End-to-End Encryption between Cloud Applications in a Personal Domain

摘要

This paper presents Encrypted Cloud (EnCloud), a system designed for providing end-to-end encryption between cloud applications to facilitate their operation and enable users trust in providers. EnCloud relieves end-users' privacy concerns about the data stored in cloud services so that the private data are securely stored on the cloud server in an encrypted form while the data owner's EnCloud applications are only allowed to decrypt the encrypted data. To show the feasibility of EnCloud, we implemented a prototype for Dropbox. The experimental results of the prototype demonstrate that the additional time delay incurred by EnCloud operations is acceptable (within 11.5% of the total execution-time).