Trustydrive, A Multi-Cloud Storage Service That Protects Your Privacy

The increasing popularity of cloud services is leading people to store their data to the Internet. Cloud storage services, by promising the access of your data anywhere at any time, do not provide users with sufficient transparency to allow them to know exactly how their data is stored and who can access and control it. The proposed cloud storage service offers users the possibility to control their data organization from two concepts. First, users choose the algorithm to encode their documents. This algorithm breaks documents into blocks before sending it to the storage service. So, the storage service does not know how the user data is organized, and so, it can not read user documents. Second, the cloud storage service works with multiple storage providers to keep the user data distributed over different places in order to diminish the consequences of data loss or data theft from one storage provider.This paper describes a prototype of a cloud storage service that respects the user privacy without omitting both the security and the availability of data.