LUKS encryption with external header file

[d7volker]

Hi,

in the past I used a external header for full disk encryption. That means I have the header already available. But when I start hashcat I got the following:

d7v@nano:~/src/hashcat$ hashcat -a 3 -m 14600 ./xheader.img
hashcat (v6.1.1) starting...

* Device #1: WARNING! Kernel exec timeout is not disabled.
            This may cause "CL_OUT_OF_RESOURCES" or related errors.
            To disable the timeout, see: https://hashcat.net/q/timeoutpatch
CUDA API (CUDA 10.2)
====================
* Device #1: NVIDIA Tegra X1, 2475/3964 MB, 1MCU

Minimum password length supported by kernel: 0
Maximum password length supported by kernel: 256

Hashfile './xheader.img': Disabled LUKS key detected
No hashes loaded.

Started: Mon Feb 15 15:18:43 2021
Stopped: Mon Feb 15 15:18:43 2021


Any ideas about the error?

My header file looks as the following:

d7v@nano:~/src/hashcat$ file xheader.img
xheader.img: LUKS encrypted file, ver 1 [aes, xts-plain64, sha512] UUID: e205e22c-f4bc-4555-a17d-d8440db7e1b6

d7v@nano:~/src/hashcat$ cryptsetup luksDump  --key-file - xheader.img
LUKS header information for xheader.img

Version:        1
Cipher name:    aes
Cipher mode:    xts-plain64
Hash spec:      sha512
Payload offset: 4096
MK bits:        512
MK digest:      c1 d1 92 50 ae 05 b4 1c 20 70 72 9b e2 00 31 96 b4 f0 40 fc
MK salt:        5b d2 5b 40 1a 9f be d3 b1 3a 3d 1b 48 10 2b 12
                2f 27 ee c0 f6 c3 90 9f f5 c2 a6 aa e9 b6 c7 24
MK iterations:  341250
UUID:          e205e22c-f4bc-4555-a17d-d8440db7e1b6

Key Slot 0: ENABLED
        Iterations:            2727029
        Salt:                  6c 61 ca 9d 89 ec 0e 19 6c 17 68 46 ff ce 28 b6
                                1c a1 85 d1 1f 9a c0 08 d9 a7 28 83 41 7f 1d e5
        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



Thank You!
Volker