# cryptsetup  luksDump /dev/nvme0n1 
LUKS header information
Version:           2
Epoch:             3
Metadata area:     16384 [bytes]
Keyslots area:     16744448 [bytes]
UUID:              06f64aa0-47ec-4371-b343-034d7126349a
Label:             (no label)
Subsystem:         (no subsystem)
Flags:           (no flags)Data segments:
  0: crypt
    offset: 16777216 [bytes]
    length: (whole device)
    cipher: aes-xts-plain64
    sector: 4096 [bytes]Keyslots:
  0: luks2
    Key:        512 bits
    Priority:   normal
    Cipher:     aes-xts-plain64
    Cipher key: 512 bits
    PBKDF:      argon2id
    Time cost:  10
    Memory:     102400
    Threads:    1
    Salt:       28 63 63 7d f3 78 45 d6 fc 6f 04 cb 90 93 5d f5 
                84 5f 40 d4 27 10 9b fd f1 b7 2d c1 b2 8f 72 65 
    AF stripes: 4000
    AF hash:    sha256
    Area offset:32768 [bytes]
    Area length:258048 [bytes]
    Digest ID:  0
Tokens:
Digests:
  0: pbkdf2
    Hash:       sha256
    Iterations: 1000
    Salt:       a5 5f c9 f6 a5 e7 f8 e7 f2 2d 19 7b 63 77 50 97 
                b6 aa 52 e6 80 f7 de 59 b3 ea dd 3f b0 e3 b8 dc 
    Digest:     23 f0 ab 53 41 34 a5 eb 46 90 14 d7 bc e5 3b a2 
                9d fc 32 88 7c 9a f7 a1 2a 00 25 02 36 d7 8a 35 
 

>>> o.bd.crypto_luks_info("/dev/nvme0n1")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
gi.repository.GLib.GError: g-bd-crypto-error-quark: Failed to initialize device: No such device (0)
>>> hasattr(o.bd, 'crypto_luks_info')
True
>>> 

[root@storageqe-108 libblockdev]# nvme list
Node                  Generic               SN                   Model                                    Namespace  Usage                      Format           FW Rev  
--------------------- --------------------- -------------------- ---------------------------------------- ---------- -------------------------- ---------------- --------
/dev/nvme0n1          /dev/ng0n1            3EJ0A04H0NB3         Dell Ent NVMe FIPS CM6 MU 1.6TB          0x1         16.78  MB /   1.60  TB      4 KiB + 64 B   3.1.5   
[root@storageqe-108 libblockdev]#