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-rw-r--r--Documentation/nvme-tls-key.txt73
1 files changed, 66 insertions, 7 deletions
diff --git a/Documentation/nvme-tls-key.txt b/Documentation/nvme-tls-key.txt
index 15942a4..e1819c7 100644
--- a/Documentation/nvme-tls-key.txt
+++ b/Documentation/nvme-tls-key.txt
@@ -1,5 +1,5 @@
nvme-tls-key(1)
-======================
+===============
NAME
----
@@ -12,13 +12,14 @@ SYNOPSIS
[--keytype=<type> | -t <type>]
[--keyfile=<file> | -f <file>]
[--import | -i] [--export | -e]
+ [--revoke=<description>| -r <description>]
[--verbose | -v]
DESCRIPTION
-----------
-Import or export 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
+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>
@@ -41,7 +42,7 @@ OPTIONS
Type of the key for resulting TLS key.
Default is 'psk'.
--k <file>::
+-f <file>::
--keyfile=<file>::
File to read the keys from or write the keys to instead of
stdin / stdout.
@@ -54,7 +55,11 @@ OPTIONS
-e::
--export::
Write the key data to the file specified by '--keyfile'
- or stdou if not present.
+ or stdout if not present.
+
+-r <description>::
+--revoke=<description>::
+ Revoke a key from a keyring.
-v::
--verbose::
@@ -62,7 +67,61 @@ OPTIONS
EXAMPLES
--------
-No Examples
+
+* 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
+------------
NVME
----