International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Paper: CRUST: Cryptographic Remote Untrusted Storage without Public Keys

Authors:
Erel Geron
Avishai Wool
Download:
URL: http://eprint.iacr.org/2007/267
Search ePrint
Search Google
Abstract: This paper presents CRUST, a stackable file system layer designed to provide secure file sharing over remote untrusted storage systems. CRUST is intended to be layered over insecure network file systems without changing the existing systems. In our approach, data at rest is kept encrypted, and data integrity and access control are provided by cryptographic means. Our design completely avoids public-key cryptography operations and uses more efficient symmetric-key alternatives to achieve improved performance. As a generic and self-contained system, CRUST includes its own in-band key distribution mechanism and does not rely on any special capabilities of the server or the clients. We have implemented CRUST as a Linux file system and shown that it performs comparably with typical underlying file systems, while providing significantly stronger security.
BibTeX
@misc{eprint-2007-13548,
  title={CRUST: Cryptographic Remote Untrusted Storage without Public Keys},
  booktitle={IACR Eprint archive},
  keywords={applications / file systems, key management},
  url={http://eprint.iacr.org/2007/267},
  note={ yash@eng.tau.ac.il 13704 received 10 Jul 2007},
  author={Erel Geron and Avishai Wool},
  year=2007
}