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> Encrypted Volume, Encrypted volume
SNi
post Sep 8 2005, 08:16 PM
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I'd like to have an encrypted volume on my (stock ROM) SL-C3000 - not the entire SD or CF but just certain directories, so that files written/read to these directories are transparently encrypted and decrypted with a key, similar to how I had an encrypted volume on my HP200lx using SecureDevice (also could be done with SecureDrive and a number of other programs). Does anyone have something like this set up??

Doing a little searching I found a program called Crypted File System by Matt Blaze that seems to be along these lines. There are Debian versions available at ftp://ftp.zedz.net/pub/crypto/disk/cfs/ Apparently .deb files are similar to .ipk files and can be extracted using ar -x <pkg name> However I (blush) can't find an ar prog that I can use. I downloaded a couple of scripts from the web that failed to extract the cfs .deb file. I'm sure it's trivial to do if you know how, but I just have my Z and a Windows box, so any tips would be appreciated.. An .ipk of cfs would be extra appreciated smile.gif
TIA,
SNi
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Meanie
post Sep 8 2005, 10:44 PM
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QUOTE(SNi @ Sep 9 2005, 02:16 PM)
I'd like to have an encrypted volume on my (stock ROM) SL-C3000 - not the entire SD or CF but just certain directories, so that files written/read to these directories are transparently encrypted and decrypted with a key, similar to how I had an encrypted volume on my HP200lx using SecureDevice (also could be done with SecureDrive and a number of other programs). Does anyone have something like this set up??

Doing a little searching I found a program called Crypted File System by Matt Blaze that seems to be along these lines. There are Debian versions available at ftp://ftp.zedz.net/pub/crypto/disk/cfs/ Apparently .deb files are similar to .ipk files and can be extracted using ar -x <pkg name> However I (blush) can't find an ar prog that I can use. I downloaded a couple of scripts from the web that failed to extract the cfs .deb file. I'm sure it's trivial to do if you know how, but I just have my Z and a Windows box, so any tips would be appreciated.. An .ipk of cfs would be extra appreciated smile.gif
TIA,
SNi
*


ar is part of the zgcc distro, so if you install the gcc bits, you will get ar. alternatively, if you have perl installed on your Z, you can also use my deb2ipk script to convert deb files to ipk files. have a look at my website.
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gcf
post Sep 9 2005, 03:27 AM
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How about using crypto-loop with aes-128 instead?

Alternatively i found fuse very interesting - you can encrypt anything and still backup/sync/copy etc on a per file-base instead of copying an entire filesystem image.

encrypted fuse "leaks" however, the number and size of the files...
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