nvme-keys-gen-kxchap-secret - Generate a host KX-HMAC-CHAP
secret
nvme [<global-options>] keys gen-kxchap-secret [--hmac=<hmac-id> | -m <hmac-id>]
[--secret=<secret> | -s <secret>]
[--secret-length=<len> | -l <len>]
Generate a KX-HMAC-CHAP secret in the DHHC-1 secret representation
defined by the NVM Express Base Specification 2.4, section 8.3.4.5.8, in the
form: DHHC-1:00:ia6zGodOr4SEG0Zzaw398rpY0wqipUWj4jWjUh4HWUz6aQ2n: and prints
it to stdout.
-m <hmac-id>, --hmac=<hmac-id>
Select the hash function the consumer is to apply to the
secret. Possible values are: 0 - No transformation (the secret is used as the
key) 1 - SHA-256 2 - SHA-384 3 - SHA-512
-s <secret>, --secret=<secret>
Secret value (in hexadecimal) to be placed in the
representation. If none are provided a random value is used.
-l <len>, --secret-length=<len>
Length of the secret. Possible values are 32, 48, or 64.
A secret given with --secret as hexadecimal fixes the length, so a
value contradicting it is an error; a secret generated here takes this length,
defaulting to the digest size of the selected hash function, or 32 if none is
selected.
The following options are defined at the top-level nvme command
and are available to this subcommand:
--dry-run
Print the command that would be executed, but do not
actually execute it.
--no-ioctl-probing
Disable probing for 64-bit IOCTL support.
--no-retries
Disable retry logic on transient errors.
-o <fmt>, --output-format=<fmt>
Set the reporting format to normal, tabular,
'json, or binary. Only one output format may be used at a
time.
--output-format-version=<version>
Select the output format version. Version 1 uses
the original field naming, while version 2 (default) provides more
consistent and script-friendly field names. Other versions are rejected.
--quiet
Suppress informational messages. Errors are still
reported, and --quiet cancels any --verbose for the library log level.
--set-options=<key=value>[,<key=value>...]
Set libnvme library options for this invocation.
Supported keys are force-4k, mi-probe-enabled,
test-base-dir and test-sysfs-dir.
--timeout=<ms>
Set the timeout for the command in milliseconds.
infinite or -1 waits without a time limit (0xffffffff).
-v, --verbose
Increase the level of detail in the output. May be
specified multiple times to further increase verbosity.
These options can also be set as machine-wide defaults in
nvme-cli.conf(5). A command-line flag always overrides the file.
Part of the nvme-user suite