[dm-crypt] LUKS header recovery attempt, bruteforce detection of AF-keyslot bit errors

Jindrich Kolman kolman.jindrich at gmail.com
Fri Nov 24 12:57:34 CET 2017

About a week back, i was suddenly unable to open my luks-encrypted
partition. Mysteriously, a day later, it then worked again, but since
two days ago, i an again locked out. Would you be willing to share
your code, protagonist?

>My current memcmp of the first 512 bytes therefore works just as well on
>LVM as on ext4 and has managed to find a bit flip on a deliberately
>corrupted key slot.

>However, this is bad news for my ultimate target of recovering the
>actual master key of the SSD in question, as it seems my previous
>1-error checks have been unsuccessful, but valid.
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