Karl Knutsson , pp. 22. Inst. för programvaruteknik och datavetenskap/Dept. of Software Engineering and Computer Science, 2002.
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.
332 35 Gislaved