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Old 07-28-2003, 03:26 PM   #1
Registered: May 2003
Location: Las Vegas, NV
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Encrypted file systems?

I have been reading the military uses a 256-bit encrypted file system on their laptops. I am curious if anybody has setup an encrypted filesystem and how well it works. Any recommendations on what to do would be helpful.
Old 07-28-2003, 04:04 PM   #2
Registered: Apr 2003
Location: Silicon Valley East, Northern Virginia
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The FBI run something called Gaurd Dog (or something like that). That program uses symmetric encryption and I assume that the military is similar. I have used PgP to encrypt directories on my hard drive and besides entering a complex password to get to the files it's not tough.
Old 07-28-2003, 04:23 PM   #3
Registered: May 2002
Location: Wales
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I belive there is an Encrypted FIle System available for linux called loopback-encryption.

Not sure exactly how it works but Im assuming it works with the loop device some how.
Old 07-30-2003, 01:38 AM   #4
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I was using loopback-encryptions (as You called it); When You compile Your kerenl with it it works like this:

losetup -e aes encrypted-fs-in-file.iso /dev/loop0
(enter passphrase and bits number)
mount /dev/loop0 directory

It is simple, fast, it is possible to create rootfs like this... its ok. Compiling is hard.
Old 07-06-2004, 12:19 PM   #5
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but how do you set the key size ?
what is the default key size for AES ?


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