[dm-crypt] Header corrupted?

Arno Wagner arno at wagner.name
Mon Jan 18 16:17:58 CET 2016


Hi Sumaya,

that looks like you have a LUKS container on the raw disk.
Not a problem in itself, just a bit unusual. The luksDump
info looks fine. 

You can still have a problem in the key-slot. To check for 
that, please compile and run the keyslot-checker and post 
its output here. If it finds something, also post the output
with option -v, unless that is too long.

You find it in misc/keyslot_ckecker in the source-package. 
It will look for areas of possible corruption in the keyslots.

Regards,
Arno
 

On Mon, Jan 18, 2016 at 12:53:13 CET, Sumaya wrote:
> Hi everybody, thank you very much for all responses! I could not
> follow up, I was very sick. Sorry! Here we go again... It would be
> great to have any suggestions! Thanks to everybody! Thanks a lot!!!
> Dumps: ASCII
> blkid		
> /dev/sdb crypto_LUKS (not mounted)
> 45c461c2-1976-48a2-804f-b3812173b0e8 crypto_Luks 	(not mounted)
> 
> parted -l
> Fehler: /dev/sdb: unbekannte Partitionstabelle
> Modell: ThinkPad Secure 1TB 3.0 (scsi)
> Festplatte /dev/sdb: 1000GB
> Sektorgröße (logisch/physisch): 512B/512B
> Partitionstabelle: unknown
> Disk Flags:
> 
> luksDump
> 
> 
> 		
> 	
> LUKS hader information for /dev/sdb 	
> 	
> 	
> 
> 	
> 	
> 	
> Version: 1 	
> 	
> 	
> Cipher name: aes 	
> 	
> 	
> Cipher mode: xts-plain64 	
> 	
> 	
> Hash spec: sha512 	
> 	
> 	
> Payload offset: 4096 	
> 	
> 	
> MK bits: 512 	
> 	
> 	
> MK digest: 23 93 9a 2a ed f5 d1 3c d9 2b 7e 3f fb 30 46 68 f0 5d a1 6a 	
> 	
> 	
> MK salt: 8c c2 23 61 b1 73 e6 82 3f 32 a2 3e fb 89 ec fa 	
> 	
> 	
> 75 f8 f9 d9 0c 25 6d f0 57 e1 62 64 8e 13 51 97 	
> 	
> 	
> MK iterations: 102500 	
> 	
> 	
> UUID:
> 	
> 	
> 	
> 
> 	
> 	
> 	
> Key Slot 0: ENABLED 	
> 	
> 	
> Iterations: 409204 	
> 	
> 	
> Salt: f9 7a ee a2 e5 bb 8a d0 a1 4c 4d e2 0b ac e2 86 	
> 	
> 	
> 37 f5 ce fe 2a 9c 65 a0 ac cc fe 35 2e 0d 11 8e 	
> 	
> 	
> Key material offset: 8 	
> 	
> 	
> AF stripes: 4000 	
> 	
> 	
> Key Slot 1: DISABLED 	
> 	
> 	
> Key Slot 2: DISABLED 	
> 	
> 	
> Key Slot 3: DISABLED 	
> 	
> 	
> Key Slot 4: DISABLED 	
> 	
> 	
> Key Slot 5: DISABLED 	
> 	
> 	
> Key Slot 6: DISABLED 	
> 	
> 	
> Key Slot 7: DISABLED 	
> 	
> 	
> 
> 	
> 	
> 	
> 
> Hi there, Please resend the dumps in ASCII as Arno suggested.
> Meanwhile: It seems the disk has no partition and starts with a
> LUKS-Header right away. While the LUKS-Header itself seems to be
> consistent (at first glance) the keyslot itself could of course be
> damaged. Regards -Sven Am 14.01.2016 um 11:02 schrieb sumaya1960 at
> gmx.de <http://www.saout.de/mailman/listinfo/dm-crypt>: >//>//>/Hi
> everybody, />//>/I am a bit lost now. I tried (why so ever) to
> connect my (ext4) />/encrypted disk to a Windows 10 System - (what a
> big stupid idea - I know />/- very very stupid).... />//>/Now I can
> not access my encrypted disk anymore and wonder if the Header />/is
> damaged? My pass-phrase is absolute correct, but not accepted with
> />/luksOpen! />//>//>/luksDump gives />//>//>//>//>/blkid shows
> />//>//>//>/What happened to my external disk? I am running Cent
> OS7... />/For any help I would be so thankful!!! Really very very
> thankful!!! />/Thanks a lot! />//>/Kind regards, />/Sumaya
> />//>//>//>//>//>//>//>//>//>

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> dm-crypt mailing list
> dm-crypt at saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt


-- 
Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: arno at wagner.name
GnuPG: ID: CB5D9718  FP: 12D6 C03B 1B30 33BB 13CF  B774 E35C 5FA1 CB5D 9718
----
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If it's in the news, don't worry about it.  The very definition of 
"news" is "something that hardly ever happens." -- Bruce Schneier


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