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Old 08-17-2010, 08:36 AM   #1
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Question Linux dist that supports one-time file encryption method

I need to ship a clearcase server (yet to be built) from one office to another and need to be able to encrypt some portion of files on the disk before it is shipped. This only needs to be one-time encryption. When it arrives these files will be decrypted. I am looking for opinions on a good linux dist to put clearcase on that has some form of EFS available (preferable one that uses AES). The main concerns are 1) that the data is totally secure during transit in case the shipment is lost or stolen, and 2) how easy it is to encrypt and decrypt the files (we have very little time to do so).
Old 08-17-2010, 09:45 AM   #2
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Depending on what files you need to encrypt I would most recommend TrueCrypt since it is platform independent. Most distros ship out of the box with the ability to encrypt the filesystem during install. Another common Linux utility used for encrypting the filesystem is called dm-crypt. I'm pretty sure that's what most of the distros use during install processes (Debian and Ubuntu have an EFS option during install for sure).

NOTE: Please be aware that according to the docs truecrypt currently only supports Windows operating systems for EFS on bootable system partitions. See doc article.

Another user asked me a related question so you may find this thread useful.

Truecrypt also creates EFS and to open a truecrypt archive you have to mount it and it behaves like an EFS but stored within a single file. My favorite feature of truecrypt is wrapping encryption algorithms.

AES+TwoFish+Serpent with a Whirlpool hash cipher is my preferred encryption setup. The archive is first encrypted in Serpent, then the Serpent is encrypted in Twofish, then the Twofish is encrypted in AES as the outermost layer of security. See this article in the truecrypt docs about it.

Last edited by sag47; 08-17-2010 at 10:03 AM.


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