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Original author(s) Michael Halcrow, IBM Linux Technology Center, Erez Zadok, Michael Halcrow
Developer(s) Tyler Hicks, Dustin Kirkland
Initial release November 30, 2006; 8 years ago (2006-11-30)
Stable release 106 / March 11, 2015; 6 months ago (2015-03-11)
Development status Active
Written in C
Operating system Linux
Platform Linux kernel
Type filesystem, encryption
License GPL v2+

eCryptfs (Enterprise Cryptographic Filesystem) is a package of disk encryption software for Linux. It is implemented as a POSIX-compliant[citation needed] filesystem-level encryption layer, aiming to offer functionality similar to that of GnuPG at the operating system level,[1] and has been part of the Linux kernel since version 2.6.19. The eCryptfs package has been included in Ubuntu since version 9.04 and is used to implement Ubuntu's encrypted home directory feature.[2]

eCryptfs is derived from Erez Zadok's Cryptfs.[3] It uses a variant of the OpenPGP file format for encrypted data, extended to allow random access, storing cryptographic metadata (including a per-file randomly generated session key) with each individual file.[1]

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