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David Howellscfc411e2015-08-14 15:20:41 +01001menu "Certificates for signature checking"
2
3config MODULE_SIG_KEY
4 string "File name or PKCS#11 URI of module signing key"
5 default "certs/signing_key.pem"
6 depends on MODULE_SIG
7 help
8 Provide the file name of a private key/certificate in PEM format,
9 or a PKCS#11 URI according to RFC7512. The file should contain, or
10 the URI should identify, both the certificate and its corresponding
11 private key.
12
13 If this option is unchanged from its default "certs/signing_key.pem",
14 then the kernel will automatically generate the private key and
15 certificate as described in Documentation/module-signing.txt
16
17config SYSTEM_TRUSTED_KEYRING
18 bool "Provide system-wide ring of trusted keys"
19 depends on KEYS
20 help
21 Provide a system keyring to which trusted keys can be added. Keys in
22 the keyring are considered to be trusted. Keys may be added at will
23 by the kernel from compiled-in data and from hardware key stores, but
24 userspace may only add extra keys if those keys can be verified by
25 keys already in the keyring.
26
27 Keys in this keyring are used by module signature checking.
28
29config SYSTEM_TRUSTED_KEYS
30 string "Additional X.509 keys for default system keyring"
31 depends on SYSTEM_TRUSTED_KEYRING
32 help
33 If set, this option should be the filename of a PEM-formatted file
34 containing trusted X.509 certificates to be included in the default
35 system keyring. Any certificate used for module signing is implicitly
36 also trusted.
37
38 NOTE: If you previously provided keys for the system keyring in the
39 form of DER-encoded *.x509 files in the top-level build directory,
40 those are no longer used. You will need to set this option instead.
41
Mehmet Kayaalpc4c36102015-11-24 16:18:05 -050042config SYSTEM_EXTRA_CERTIFICATE
43 bool "Reserve area for inserting a certificate without recompiling"
44 depends on SYSTEM_TRUSTED_KEYRING
45 help
46 If set, space for an extra certificate will be reserved in the kernel
47 image. This allows introducing a trusted certificate to the default
48 system keyring without recompiling the kernel.
49
50config SYSTEM_EXTRA_CERTIFICATE_SIZE
51 int "Number of bytes to reserve for the extra certificate"
52 depends on SYSTEM_EXTRA_CERTIFICATE
53 default 4096
54 help
55 This is the number of bytes reserved in the kernel image for a
56 certificate to be inserted.
57
David Howellscfc411e2015-08-14 15:20:41 +010058endmenu