Virtualization of file system encryption

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Security kernel or utility

Reexamination Certificate

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Details

C713S165000, C713S167000, C713S193000, C713S194000, C726S002000, C726S015000, C726S026000, C707S821000, C707S823000, C707S828000, C707S831000

Reexamination Certificate

active

07908476

ABSTRACT:
A computer implemented method, apparatus, and computer program product for using a virtual file system to encrypt files. The process registers a plurality of file systems on a data processing system with the virtual file system. The virtual file system is enabled to encrypt files without intervention from any file system in the plurality of file systems. The virtual file system identifies whether a file on a given file system is an encrypted file using a map file associated with the given file system. In response to identifying the file as an encrypted file, the virtual file system encrypts all data written to the file in accordance with encryption specifications in the map file.

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Lim et al., “ICFS: Integrated Crypto-Filesystem Into Vnode Layer Using Access Control”, Proceedings of the 6th IASTED International Conference Internet and Multimedia Systems and Application, 2002, pp. 97-101.
Webber, Operating System Support for Portable Filesystem Extensions, USENIX Association, Proceedings of the Winter 1993 USENIX Conference, pp. 219-228.

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