The Jigsaw secure distributed file system

The Jigsaw Distributed File System (JigDFS) aims to securely store and retrieve files on large scale networks. The design of JigDFS is driven by the privacy needs of its users. Files in JigDFS are sliced into small segments using an Information Dispersal Algorithm (IDA) and distributed onto different nodes recursively. JigDFS provides fault-tolerance against node failures while assuring confidentiality, integrity, and availability of the stored data. Layered encryption is applied to each file segment with keys produced by a hashed-key chain algorithm. Recursive IDA and layered encryption enhance users’ anonymity and provide a degree of plausible deniability. JigDFS is envisioned to be an ideal long-term storage solution for developing secure data archiving systems.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The Jigsaw Distributed File System (JigDFS) aims to securely store and retrieve files on large-scale networks. ► JigDFS employs strong encryption to protect confidentiality, uses hash functions to preserve integrity, and uses IDA to improve availability. ► JigDFS also provides a reasonable level of plausible deniability thathelps enhancing users’ privacy and anonymity. ► JigDFS is envisioned to be an ideal long-term storage solution for developing data archiving systems.