TrueCrypt
 

This is a new thread about TrueCrypt as a means of sharing encrypted data. See the thread http://www.internettablettalk.com/fo...ad.php?t=15742
for more on encrypted partitions.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

It is now possible to build TrueCrypt and use it with a standard OS2008 kernel. It requires the loading of the kernel module dm-mod.ko - which I've included in the deb. So if anyone would like to try it out, on the understaning that there's no promise it will work, or even that it won't break stuff, then the files needed are here http://mike.saunby.googlepages.com/truecryptforn800

I should probably add that my motivation was somewhat different, sharing encrypted FAT volumes between Windows and N810. So I've tested for quite different things. I say a bit more on my blog at http://mike.saunby.net and will post updates when I get more time to look at this. Could be days, could be months....

Post any findings, ideas, etc. here or email me.

Re: TrueCrypt
 

Wow, I use this for Windows. I'll definitely try your version for OS2008. It's an easy to use program and works extremely well, so I'm hoping the same will be true for my N800.

Re: TrueCrypt
 

Maybe one day. For now you'll have to try using it from the command line :-(

See http://www.truecrypt.org/docs/?s=linux-manpage

Re: TrueCrypt
 

Truecrypt team has planned to make a gui version for linux

Re: TrueCrypt
 

Ummm.... I love you man! :D

Re: TrueCrypt
 

I'd rather see integration with file manager than another GUI. Though a GUI for volume creation might be useful for some users - rather than using a PC.

Re: TrueCrypt
 

There's a simple little pygtk based gui for truecrypt called Easycrypt which might be easy to adapt for maemo. Have a look here.

Re: TrueCrypt
 

I've been using TrueCrypt on Windows for several months and when I got my N800 a few weeks ago, I wanted to see if anyone had ported it.

Last I checked no one had tried porting TC to Maemo and just noticed yesterday that Mike had posted his port. I feel like I re-invented the wheel, but I did get my port working except for one annoyance.

This is the first time actually messing with an SDK, especially for crosscompiling on another platform so it was a really good learning experience.

Anyway, I can build an encrypted container, mount it, and put files in it. Then I can dismount it, copy the container file to a Windows box and mount it successfully. However, whenever I unmount the container on the N800, the truecrypt.ko module unloads itself but does not reload the next time truecrypt is called.

I haven't tried Mike's version but giving his .deb files a quick look, it seems like just about all the files he built (short of the docs/pdfs) are part of what I did as well, so it will take some more tinkering to see what I did wrong.

As far as the actual encryption, it definitely works because the volume mounts in the Windows version, and I also took a hex viewer to the file and it's a big mess of nonsense :)

Has anyone else tried this and had similar problem with the module unloading?

-Anthony

Re: TrueCrypt
 

Ha I found my problem.

I made the target directories by hand and had accidentally made /usr/share/truecrypt/Kernel (capital K) instead of kernel (lowecase).

It works beautifully now. :D

If anyone else is trying their hand at getting this working and is running into problems, I can try to help if I can...

Re: TrueCrypt
 

Two things:

1. Anyone take a crack at TrueCrypt 5?
2. Just a FYI, if you have the ntfs.ko module, you can use NTFS truecrypt containers. (Thanks to Free for compiling it!)
I dropped a copy of several of the custom .ko modules that I'm currently using on my n810 on my server if anyone wants any of them. (http://www.master-technology.com/mae.../n810ko.tar.gz)

Nathan.

Re: TrueCrypt
 

Yep, I tried to compile TC5. It compiles and links successfully but seg faults when executed on the N800. It actually stays resident and eats up CPU until you manually kill it.

A big problem with Linux TC5 in general is its complete reliance on wxWidgets. Even if you try to compile it with NOGUI=1 it still needs the wxWidgets source.

An even bigger issue is that even if you had a non-crashing version of TC5 and just wanted to use CLI mode, the developers removed the -c option to create a new container from the command line.

I haven't tried TC 5.0a yet though.

The GOOD thing about TC5 is that it no longer needs to build a kernel module.

Re: TrueCrypt
 

anyone aiming for a deb of truecrypt and Easycrypt and want to upload it to maemo.org?? maybe even adding it to a repositury somewhere and share the security with the masses! ;)

Re: TrueCrypt
 

I've been working on that for a month or so but it's still not completely to my liking as far as release. I'll see about getting something posted by the end of this weekend.

Re: TrueCrypt
 

Have you finished a test version or something?
The "create new volume" is not important.
If you have something available which can already mount and unmount would be great.

Re: TrueCrypt
 

Actually I just sent my latest update to Steven Harper (the author of EasyCrypt) for review. Soon as he gets back to me with a couple fixes I asked him about, I'll get a package Debianized and ready to go for testing.

Re: TrueCrypt
 

Great! Thanks!

Re: TrueCrypt
 

TrueCrypt 5.1 is out, it has the following new feature and fixes:

# Command line options for creating new volumes. (Linux and Mac OS X)
# Many other minor bug fixes. (Windows, Mac OS X, and Linux)
# Many other minor improvements. (Windows, Mac OS X, and Linux)

Maybe it is more usable on the N8xx series now?

Re: TrueCrypt
 

I downloaded and unpacked the 5.1 source a few days ago when it was released but I haven't tried to compile it in Scratchbox yet.

Someone had posted a patch to 5.0 to basically disable GUI, which, although did result in a smaller footprint, still needed the wxWidgets libraries to be present to compile.

And last time I tried to enable Hildon support in wxWidgets to at least try running the GUI version on N8x0, it simply failed to compile properly. Even if it does, it looks like it might require substantial Hildonizing to make the actual GUI panels look usable on a small screen.

Never say never, though!

Re: TrueCrypt
 

I posted my first test release of EasyCrypt on the EasyCrypt thread if anyone wants to take a crack at using it...

http://www.internettablettalk.com/fo...d.php?p=158129