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MetFS is a filesystem software in userspace that is FUSE based, encrypted, dynamic sized (increase when new data added, decrease when data removed), single file when it's unmounted and very fast.

MetFS 's been written in C language for performance reasons; proved to be running on Linux and FreeBSD.

Features:

• MetFS partitions are visible only to the user who mounted them. No other users (including root) can view the filesystem contents.
• MetFS partition looks like a single file when it's unmounted.
• Clear version of the user password is never written to disk.
• RC4 stream cipher algorithm is used.
• MD5 hash algorithm is preferred.
• Clear data never stored in anywhere.
• Writing 1.6 GB sized data in ext3 filesystem is just 16 seconds faster than MetFS.
• Faster and more secure string functions of OpenBSD and D.J.B are used.
• .mfs is official file extension of MetFS.
• MetFS also has a GUI in Java.

[Metin KAYA]

Detailed information about encryption and MetFS is written in MetFS.pdf.