systemd-keyutil - Man Page

systemd-keyutil [Options...] {COMMAND}

systemd-keyutil can be used to perform various operations on private keys and X.509 certificates.

validate

Checks that we can load the private key and certificate specified with --private-key= and --certificate= respectively.

As a side effect, if the private key is loaded from a PIN-protected hardware token, this command can be used to cache the PIN in the kernel keyring. The $SYSTEMD_ASK_PASSWORD_KEYRING_TIMEOUT_SEC and $SYSTEMD_ASK_PASSWORD_KEYRING_TYPE environment variables can be used to control how long and in which kernel keyring the PIN is cached.

Added in version 257.

public

This commands prints the public key in PEM format extracted from either the certificate given with --certificate= or the private key given with --private-key=.

Added in version 257.

pkcs7

This command embeds the PKCS#1 signature (RSA) provided with --signature= in a PKCS#7 signature using the certificate given with --certificate= and writes it to the file specified with --output= in PKCS#7 format (p7s). If --content= is provided it is included in the p7s, otherwise a "detached" signature is created. The --hash-algorithm= option, which defaults to "SHA256", specifies what hash algorithm was used to generate the signature.

Added in version 258.

The following options are understood:

--private-key=PATH/URI, --private-key-source=TYPE[:NAME], --certificate=PATH, --certificate-source=TYPE[:NAME]

Set the private key and certificate to use. The --certificate= option takes a path to a PEM encoded X.509 certificate or a URI that's passed to the OpenSSL provider configured with --certificate-source. The --certificate-source takes one of "file" or "provider", with the latter being followed by a specific provider identifier, separated with a colon, e.g. "provider:pkcs11". The --private-key= option can take a path or a URI that will be passed to the OpenSSL engine or provider, as specified by --private-key-source= as a "type:name" tuple, such as "engine:pkcs11".

Added in version 257.

--signature=PATH

Input PKCS#1 signature for the pkcs7 command.

Added in version 258.

--content=PATH

Input data that corresponds to the PKCS#1 signature for the pkcs7 command, used for generating inline (i.e. non-"detached") PKCS#7 signatures.

Added in version 258.

--hash-algorithm=ALGORITHM

Hash algorithm used to generate the PKCS#1 signature for the pkcs7 command. This should be a valid openssl digest algorithm; use "openssl list -digest-algorithms" to see a list of valid algorithms on your system. Defaults to "SHA256".

Added in version 258.

--output=PATH

Output PKCS#7 signature for the pkcs7 command.

Added in version 258.

-h,  --help

Print a short help text and exit.

--version

Print a short version string and exit.

systemd-sbsign(1), systemd-measure(1)

systemd.directives(7), systemd.index(7).