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List:       linux-crypto
Subject:    Re[1]: Recovering a loop-AES encrypted root partition
From:       Andreas Schreier <a_schreier () firemail ! de>
Date:       2002-02-22 20:09:33
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> The only way to recover that data is to manually examine 
the content
> of each block. Of course you could use "grep" to find 
specific
> strings in your blocks (or other tools).

Thanks for the script! I ran it and I was able to recover 
some of my data by using grep. I noticed that it takes 
extremely long. After many hours the script had only read 
like 400 M. Unfortunately my /dev/hda6 was 2 G so it will 
take much longer. If I understand dd correctly, it doesn't 
leave out empty blocks, does it?
As I can't recover all the data at the moment and I need 
the space I would like to burn the partition on cds. I 
would like the data to remain encrypted so I guess I won't 
losetup it before burning. Is there a possibility to read 
the partition as it is and split it up into 700 M files? If 
I understood man dd correctly, I tell it to read the first 
700 000 blocks and the next time I tell it to skip the 
first 700 000 blocks, right? I am not sure how large the 
blocks have to be for burning on cd. Is it 1024 again? I 
haven't found out how to put the three 700 M files together 
again. Is that possible with dd too? I think I will have it 
in one large 2 G file and then losetup that file 
(via /dev/loop maybe?).
Thank you very much for the help. I am glad that I could 
already recover some parts of my data. Thanks!

Best regards
Andreas
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Linux-crypto:  cryptography in and on the Linux system
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