The key material is quite deliberately made just the opposite of redundant. It is artificially inflated (typically 4000X) to occupy a larger area of the disk, and in such a manner that successfully erasing any portion of that area makes the key unrecoverable.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.
On 7/29/19 7:08 AM, Konstantin V. Gavrilenko wrote:
Thanks Arno, thought so :(
Its a real pity that metadata is not redundant in luks v1.
Regards,
Konstantin
----- Original Message -----
From: "Arno Wagner" <arno@xxxxxxxxxxx>
To: dm-crypt@xxxxxxxx
Sent: Sunday, 28 July, 2019 11:00:49 PM
Subject: Re: LUKS Header crruption
Hi Konstantin,
sorry, you data is gone. You overwrote the start of the first
key-slot and there is no way to recover from that without backup.
One of the reasons why I think RAID superblocks at the start of the
device (and even more so at 4kB offset) are messed up and a sign
of clueless designers.
Regards,
Arno
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