[loop-aes] how to encrypt a block device

[Jim MacBaine <jmacbaine@yahoo.de>]

Hi,

I came to the idea to encrypt my /home dir, 
which is on a separate filesystem. I already 
had a data dir encrypted with loop-aes and
expirienced no problems with it. The procedure
of copying the whole /home structure to some
backup place, setting up the encrypted fs, and 
copying it back didn't osunt very pleasent to 
me.

I thought, why not encrypt a block device by 
block. Why not create a loop device on top of
my file system and copy block by block from 
the real device onto the loop device. 

I tried this with a floppy and the result 
seems very strange to me. I can mount the 
resulting loop device, but the files are missing

Can anyone of you please explain what happens 
here? I have attached the exact procedure.


Regards, 
Jim






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