nvme-tls-key - Man Page

nvme tls-key [--keyring=<name> | -k <name>]
                        [--keytype=<type> | -t <type>]
                        [--keyfile=<file> | -f <file>]
                        [--import | -i] [--export | -e]
                        [--revoke=<description>| -r <description>]
                        [--verbose | -v]

Import, export or remove NVMe TLS pre-shared keys (PSKs) from the system keystore. When the --export option is given, all NVMe TLS PSKs are exported in the form

<descriptions> <psk>

where <description> is the key description from the exported key and <psk> is the key data in PSK interchange format NVMeTLSkey-1:01:<base64 encoded data>:. Each key is exported in a single line. When the --import option is given key data is read in the same format and imported into the kernel keystore.

-k <name>, --keyring=<name>

Name of the keyring into which the retained TLS key should be stored. Default is .nvme.

-t <type>, --keytype=<type>

Type of the key for resulting TLS key. Default is psk.

-f <file>, --keyfile=<file>

File to read the keys from or write the keys to instead of stdin / stdout.

-i,  --import

Read the key data from the file specified by --keyfile or stdin if not present.

-e,  --export

Write the key data to the file specified by --keyfile or stdout if not present.

-r <description>, --revoke=<description>

Revoke a key from a keyring.

-v,  --verbose

Increase the information detail in the output.

• Create a new TLS key and insert it directly into the .nvme keyring:

  # nvme gen-tls-key -i -n hostnqn0 -c subsys0
  NVMeTLSkey-1:01:/b9tVz2OXJVISnoFgrPAygyS86XYJWkAapQeULns6PMpM8wv:
  Inserted TLS key 26b3260e

• Export previously created key from the kernel keyring and store it into a file

  # nvme tls-key -e -f nvme-tls-keys.txt

• Export/list all keys from the .nvme keyring using nvme and keyctl

  # nvme tls-key --export
  NVMe0R01 hostnqn0 subsys0 NVMeTLSkey-1:01:/b9tVz2OXJVISnoFgrPAygyS86XYJWkAapQeULns6PMpM8wv:
  
  # keyctl show
  Session Keyring
   573249525 --alswrv      0     0  keyring: _ses
   353599402 --alswrv      0 65534   \_ keyring: _uid.0
   475911922 ---lswrv      0     0   \_ keyring: .nvme
   649274894 --als-rv      0     0       \_ psk: NVMe0R01 hostnqn0 subsys0

• Revoke a key using the description and verifying with keyctl the operation

  # nvme tls-key --revoke="NVMe0R01 hostnqn0 subsys0"
  
  # keyctl show
  Session Keyring
   573249525 --alswrv      0     0  keyring: _ses
   353599402 --alswrv      0 65534   \_ keyring: _uid.0
   475911922 ---lswrv      0     0   \_ keyring: .nvme
  649274894: key inaccessible (Key has been revoked)

• Import back previously generated key from file and verify with keyctl

  # nvme tls-key --import -f nvme-tls-keys.txt
  
  # keyctl show
  Session Keyring
   573249525 --alswrv      0     0  keyring: _ses
   353599402 --alswrv      0 65534   \_ keyring: _uid.0
   475911922 ---lswrv      0     0   \_ keyring: .nvme
   734343968 --als-rv      0     0       \_ psk: NVMe0R01 hostnqn0 subsys0

Part of the nvme-user suite