systemd systemd-keyutil 1 systemd-keyutil Perform various operations on private keys and X.509 certificates 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. 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=. 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. 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. --signature=PATH Input PKCS#1 signature for the pkcs7 command. --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. --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. --output=PATH Output PKCS#7 signature for the pkcs7 command. systemd-sbsign1 systemd-measure1