[dm-crypt] cryptsetup won't accept password after normal reboot

Arno Wagner arno at wagner.name
Thu Feb 4 14:49:45 CET 2010


On Thu, Feb 04, 2010 at 10:21:26AM +0000, wucherpfennig wrote:
> First: I'm sorry for this strange topic behaviour, but I don't know how to
> write real answers (I tried in the test list, but didn't work either).
> 
> >I gahther this is a new installation and you would only lose
> >a few hours of configuration work, correct?
> 
> No. It was a fully working installtion. I wouldn't car that much about
> this problem, but I wanted to backup my stuff last weeekend (old backup
> was messed up). So basicly I'm standing here without any backup from the
> last few years...

So you unlocked it sucessfully a number of times and suddenly
this does not work anymore? Any changes, like a different 
keyboard?
 
> >For example if 
> >you have, say, 12 characters and 9 of them are the same on most
> >keymaps, then you could try a direct brute force.
> 
> I had the same idea last night. although my password is about 20
> characters long a brute force attack shouldn't take too long, because
> there are 4 special Chars [eg ()_-] and 8 numbers. Letters shouldn't be
> the problem, numbers too...

Letters, except 'y' and 'z'. Numbers should be the same. 
Specials you will have to try some alternatives. 

Sounds doable.

Arno
-- 
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno at wagner.name 
GnuPG:  ID: 1E25338F  FP: 0C30 5782 9D93 F785 E79C  0296 797F 6B50 1E25 338F
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