created on | January 19, 2022 |
list mapped devices
root@idoru:/# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Dec 30 22:48 control
lrwxrwxrwx 1 root root 7 Dec 30 22:48 cr-nvme0n1p10 -> ../dm-4
lrwxrwxrwx 1 root root 7 Dec 30 22:48 cr-nvme0n1p11 -> ../dm-5
lrwxrwxrwx 1 root root 7 Dec 30 22:48 cr-nvme0n1p7 -> ../dm-2
lrwxrwxrwx 1 root root 7 Dec 30 22:48 cr-nvme0n1p9 -> ../dm-3
lrwxrwxrwx 1 root root 7 Dec 30 22:48 cr-sda2 -> ../dm-0
lrwxrwxrwx 1 root root 7 Dec 30 22:48 cr-sda3 -> ../dm-1
show status of LUKS device
root@idoru:/# cryptsetup -v status cr-sda3
/dev/mapper/cr-sda3 is active and is in use.
type: LUKS1
cipher: aes-xts-plain64
keysize: 256 bits
device: /dev/sda3
offset: 4096 sectors
size: 488278016 sectors
mode: read/write
Command successful.
show reference count to a LUKS device
a reference count > 0 indicates that the LUKS device is mounted under some mount point
dmsetup info -c --noheadings -o open cryptsda3
root@idoru:/# cryptsetup luksDump /dev/sda3
LUKS header information for /dev/sda3
Version: 1
Cipher name: aes
Cipher mode: xts-plain64
Hash spec: sha256
Payload offset: 4096
MK bits: 256
MK digest: 65 c9 a6 69 b0 fd 0d 6c 6a 48 3d 7f 2b f4 5c f9 e9 89 d7 e0
MK salt: 57 de 6c 0f a4 f5 6d 21 66 52 f7 93 b9 9e e0 6c
09 cd 71 47 0a dd f4 e4 2d 2e ee e0 62 72 7c 7a
MK iterations: 530000
UUID: 524654a9-61f7-4e01-8cdb-e8ac35e97504
Key Slot 0: ENABLED
Iterations: 4129031
Salt: 8d 47 96 50 59 28 e3 1c 02 75 bc a5 51 24 4e 84
ac 40 81 92 39 36 09 27 d0 f8 0b 3c f1 68 f5 0a
Key material offset: 8
AF stripes: 4000
Key Slot 1: ENABLED
Iterations: 4091906
Salt: 9f 15 cb a1 91 a9 2a 0c bf 13 f1 b7 83 f3 6a c6
51 ef 0f d3 0e 97 c3 30 6e 47 bc 02 35 e0 cd 45
Key material offset: 264
AF stripes: 4000
Key Slot 2: ENABLED
Iterations: 4124873
Salt: 43 bb af 1e 12 cb e5 fb f1 c7 e3 84 7c 46 3a f1
e9 1f 39 e7 d8 63 37 e4 82 14 5a 1d 41 2e f4 20
Key material offset: 520
AF stripes: 4000
Key Slot 3: DISABLED
Key Slot 4: DISABLED
Key Slot 5: DISABLED
Key Slot 6: DISABLED
Key Slot 7: ENABLED
Iterations: 4158375
Salt: 4d 70 a8 ab 54 b2 b1 19 61 8e 47 9c 26 69 6f 12
ad 10 6d be 76 a7 51 df 84 cb 38 89 d4 19 7c bb
Key material offset: 1800
AF stripes: 4000