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Green Hills rolls secure file system

Posted by iNext - 2005-11-09

SANTA BARBARA, Calif. — Green Hills Software Inc. described a secure file system that will complement its MILS (multiple independent levels of security) operating system, company officials said here on Tuesday (Nov. 8).

The Green Hills Partitioning, Journaling File System (PJFS) is the newest member of a class of file systems which write to flash or hard disk media with journaling techniques, which employ data and metadata to prevent data loss during system crashes and to allow for fast reboot and recovery, said David Kleidermacher, vice president of engineering at Green Hills.

The file system is designed to work with the company’s Integrity operating system, and writes to either rotating disk media or flash in both its NOR and NAND forms.

Tom Zavisca, a director of engineering who developed the architecture for the journaling file system, said the approach adds about 2 percent of overhead, compared with a conventional file system. The file system will become generally available in the first quarter of 2006, aimed at customers in the avionics, automotive, telematics, infotainment and medical device markets.

Mike Wolf, general manager of advanced products, at the Santa Barbara-based software company, said the file system will complement the MILS specification operating system, now undergoing testing. The file system provides "a high assurance add-on to a high-assurance kernel,” allowing both top secret and open information to be stored on the same hardware, Wolf said.

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