Tresorium

Cryptographic file system for dynamic groups over untrusted cloud storage

István Lám, Szilveszter Szebeni, L. Buttyán

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

In this paper, we present Tresorium, a cryptographic file system designed for cloud based data storage. In Tresorium, files are encrypted before they are uploaded to the cloud storage providers, therefore, not even the cloud storage providers can access the users' data. Yet, Tresorium allows the sharing files within a group of users by using an underlying group key agreement protocol. A key feature of Tresorium is that it handles changes in group membership and modification of files in an extremely efficient manner, thanks to the usage of so called key-lock-boxes and a lazy re-encryption approach. Finally, Tresorium supports an ACL-like abstraction, so it is easy to use. We describe Tresorium, and analyze its security and performance. We also present some simulation results that clearly show the efficiency of the proposed system.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Parallel Processing Workshops
Pages296-303
Number of pages8
DOIs
Publication statusPublished - 2012
Event41st International Conference on Parallel Processing Workshops, ICPPW 2012 - Pittsburgh, PA, United States
Duration: Sep 10 2012Sep 13 2012

Other

Other41st International Conference on Parallel Processing Workshops, ICPPW 2012
CountryUnited States
CityPittsburgh, PA
Period9/10/129/13/12

Fingerprint

File System
Cryptography
Data storage equipment
Group Key Agreement
Key Agreement Protocol
Data Storage
Encryption
Sharing
Simulation

Keywords

  • Collaborative work
  • Cryptographic File System
  • Dynamic Groups
  • Untrusted Cloud

ASJC Scopus subject areas

  • Software
  • Mathematics(all)
  • Hardware and Architecture

Cite this

Lám, I., Szebeni, S., & Buttyán, L. (2012). Tresorium: Cryptographic file system for dynamic groups over untrusted cloud storage. In Proceedings of the International Conference on Parallel Processing Workshops (pp. 296-303). [6337494] https://doi.org/10.1109/ICPPW.2012.44

Tresorium : Cryptographic file system for dynamic groups over untrusted cloud storage. / Lám, István; Szebeni, Szilveszter; Buttyán, L.

Proceedings of the International Conference on Parallel Processing Workshops. 2012. p. 296-303 6337494.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lám, I, Szebeni, S & Buttyán, L 2012, Tresorium: Cryptographic file system for dynamic groups over untrusted cloud storage. in Proceedings of the International Conference on Parallel Processing Workshops., 6337494, pp. 296-303, 41st International Conference on Parallel Processing Workshops, ICPPW 2012, Pittsburgh, PA, United States, 9/10/12. https://doi.org/10.1109/ICPPW.2012.44
Lám I, Szebeni S, Buttyán L. Tresorium: Cryptographic file system for dynamic groups over untrusted cloud storage. In Proceedings of the International Conference on Parallel Processing Workshops. 2012. p. 296-303. 6337494 https://doi.org/10.1109/ICPPW.2012.44
Lám, István ; Szebeni, Szilveszter ; Buttyán, L. / Tresorium : Cryptographic file system for dynamic groups over untrusted cloud storage. Proceedings of the International Conference on Parallel Processing Workshops. 2012. pp. 296-303
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