SAFIUS - A Secure And Accountable Filesystem Over Untrusted Storage

Content Provider	Indian Institute of Science (IISc)
Author	Sriram, V. Narayan, Ganesh Gopinath, K.
Editor	Cole, Jack Hughes, James
Copyright Year	2007
Abstract	We describe SAFIUS, a secure accountable file system that resides over an untrusted storage. SAFIUS provides strong security guarantees like confidentiality, integrity, prevention from rollback attacks, and accountability. SAFIUS also enables read write sharing of data and provides the standard UNIX-like interface for applications. To achieve accountability with good performance, it uses asynchronous signatures; to reduce the space required for storing these signatures, a novel signature pruning mechanism is used. SAFIUS has been implemented on a GNU Linux based system modifying OpenGFS. Preliminary performance studies show that SAFIUS has a tolerable overhead for providing secure storage: while it has an overhead of about 50% of OpenGFS in data intensive workloads (due to the overhead of performing encryption decryption in software), it is comparable (or better in some cases) to OpenGFS in metadata intensive workloads.
File Format	PDF
Journal	PeerReviewed
Language	English
Publisher	IEEE Computer Society Press
Publisher Date	2007-01-01
Access Restriction	Authorized
Subject Keyword	Computer Science & Automation (Formerly, School of Automation)
Content Type	Text
Resource Type	Article