[Tutor] how to manage an encrypted file?

[Robert Lummis]

Very good suggestion! Thanks! I knew about TrueCrypt before (it's
really excellent) but I didn't think of it for this purpose because it
didn't show up when I did a Synaptic search. I'll see if I can get it
installed on ubuntu and used with Python. Actually, the URL you give
doesn't work (at least for me). But I found the following by googling
the URL:

http://blog.bjrn.se/2008/02/truecrypt-explained-truecrypt-5-update.html

On Mon, Jun 22, 2009 at 3:46 AM, Daniele<d.conca at gmail.com> wrote:
>> From: Wayne <srilyk at gmail.com>
>
>> If you want the most basic encryption you could simply XOR the file. It's fairly easy to break, though, because the same character patterns will be present as with your original file.
>
> Actually if you do it properly this kind of encryption is unbreakable,
> but you'd have to:
> 1. generate a random key long enough to cover your data
> 2. keep the key secure and in a separate place
> 3. DON'T use the key twice
>
> there must be a Security Now episode that explains the thing pretty
> well (could be this one http://www.grc.com/sn/sn-011.htm).
> Some arguments may rise against the randomness of the key, but I don't
> think its the case to go into that.
>
> You could also use TrueCrypt which is an extremely powerful
> cryptographic software (open source), I found this article that can
> help you linking it with python:
> http://blog.bjrn.se/2008/01/truecrypt-explained.html
>



-- 
Robert Lummis