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menu "Certificates for signature checking"
string "File name or PKCS#11 URI of module signing key"
depends on MODULE_SIG
Provide the file name of a private key/certificate in PEM format,
or a PKCS#11 URI according to RFC7512. The file should contain, or
the URI should identify, both the certificate and its corresponding
If this option is unchanged from its default "certs/signing_key.pem",
then the kernel will automatically generate the private key and
certificate as described in Documentation/module-signing.txt
bool "Provide system-wide ring of trusted keys"
depends on KEYS
Provide a system keyring to which trusted keys can be added. Keys in
the keyring are considered to be trusted. Keys may be added at will
by the kernel from compiled-in data and from hardware key stores, but
userspace may only add extra keys if those keys can be verified by
keys already in the keyring.
Keys in this keyring are used by module signature checking.
string "Additional X.509 keys for default system keyring"
depends on SYSTEM_TRUSTED_KEYRING
If set, this option should be the filename of a PEM-formatted file
containing trusted X.509 certificates to be included in the default
system keyring. Any certificate used for module signing is implicitly
NOTE: If you previously provided keys for the system keyring in the
form of DER-encoded *.x509 files in the top-level build directory,
those are no longer used. You will need to set this option instead.