Trusted Bridge

Nowadays, there are many online file storage services providing convienent, accessible and giant clouds for people’s daily usage. However, the convenience always comes with trust issues. There are many hackers around the world, sometimes your precious even private information is under peeking. This kind of hackers can also be extended to business services, e.g. data mining, machine learning, analysis for advertisment, or internal company employees misconducts. In this paper, we propose a trusted interface, so-called Trusted Bridge, which is built between user and different clouds (backend storage servers, Dropbox). This middle firmware creates a safe interface for storing and retrieving files. As a bridge, it does not store file directly, but guides the files with versatile encrypt methods to commute different clouds (or user’s different accounts in the same cloud) automatically. More than a bridge, it is trustable because during this operations, the bridge partitions file and use hash function to determine the destination and replication strategy. The destinations are user’s existed account within different cloud storage servers. When users want to fetch their files, the bridge know how to provide the tunnel with the key assigned. Because this procedures, those untrusted third-party storage systems only have (parts of) pieces of certain unordered files. So people can use the such untrusted services without worrying their privacy.