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Security Without Cost: A Cryptographic Log-structured File System
Blekinge Institute of Technology, Department of Software Engineering and Computer Science.
2002 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesisAlternative title
Säkerhet utan kostnad : Ett kryptografiskt log-strukturerat filsystem (Swedish)
Abstract [en]

Historically, cryptographic file systems have been several times slower than non-cryptographic file systems. This paper describes the design and implementation of a fast Cryptographic Log-structured File System on OpenBSD. We experimentally demonstrate that our pro-totype file system performs close to the Fast File System (FFS) and the Log-structured File System (LFS). To increase performance, our file system performs most encryption and decryption work during disk read and write operations. This is possible thanks to the SEAL encryption algorithm, a software optimized stream cipher that allows the en-cryption work to be performed prior to the actual data is available. We believe that our cryptographic file system design is ideal for optimal read and write performance on locally stored confidential data.

Abstract [sv]

Denna uppsats beskriver utvecklingen av ett kryptografiskt log-strukturerat filsystem och vi visar genom experiment att dess prestanda är jämförbar med lokala filsystem.

Place, publisher, year, edition, pages
2002. , 22 p.
Keyword [en]
File System, Secure File Storage, Log-structured File System, Cryptography
National Category
Computer Science
URN: urn:nbn:se:bth-4715Local ID: diva2:832063
Karl Knutsson Skiftesgatan 40 332 35 Gislaved SwedenAvailable from: 2015-04-22 Created: 2002-09-16 Last updated: 2015-06-30Bibliographically approved

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