Re: [dm-crypt] Can't decrypt LUKS partition

[H McCurdy <hmccurdy@yahoo.com>]

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 Robert,This might help.
How to crack encrypted disk (crypto-LUKS) in an efficient way?

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How to crack encrypted disk (crypto-LUKS) in an efficient way?

I had a disk encrypted by crypto-LUKS but forgotten password. I read a question posted here. LUKS HDD Encryptio...
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    On Thursday, December 26, 2019, 9:44:53 PM EST, H McCurdy <hmccurdy@yahoo.com> wrote:  
 
  Robert,
I had a situation where I remembered almost all but two characters of my passphrase and I was able to use cracker software to brute force the missing characters.  I don't remember which software I used but two characters doesn't offer a lot of entropy.  If you can identify which positions in the passphrase string might be German characters, you might be able to setup a brute force cracking template.
This only makes sense if you otherwise have almost all of the correct passphrase.

    On Thursday, December 26, 2019, 4:24:55 PM EST, robert.wender@tutanota.de <robert.wender@tutanota.de> wrote:  
 
  Hello,

I'm suddenly unable to decrypt my Linux Mint partition, SSD. I get this error message:

"Enter passphrase for /dev/nvme0n1p3:
No key available with this passphrase."

 It was encrypted at install (entire drive).
I'm using only this drive, and only Linux Mint, nothing else. I didn't do any updates, I didn't even install anything before it stopped working (worked for about half a year).
I don't have any backup.
What I did do is clean my keyboard. I use German layout, and there's _underscores_ in my password. But I tested everything I could think of
I tested all my keys a lot of times, it's always correct, wrote my password the way I always did, I wrote it assuming US layout, wrote it using a different keyboard, tried decrypting using Linux Mint live CD, Fedora live CD, tried all the German keyboard layouts, some English ones.

cryptsetup luksDump /dev/nvme0n1p3:
https://pastebin.com/9arD2wVs
I don't know much about that, does it look fine?
I also searched the hexdump for words and used the Key-Slot Checker, seems fine.
Should I just continue testing all existing layouts? Or does something look strange/does someone have an idea what to try?

Regards,
Robert
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