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ima: enable signing of modules with build time generated key

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The kernel build process currently only signs kernel modules when
MODULE_SIG is enabled. Also, sign the kernel modules at build time when
IMA_APPRAISE_MODSIG is enabled.

Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Acked-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Nayna Jain
2021-04-09 10:35:06 -04:00
committed by Mimi Zohar
parent b31f2a495d
commit 0165f4ca22
3 changed files with 12 additions and 4 deletions
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2
certs/Kconfig
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@@ -4,7 +4,7 @@ menu "Certificates for signature checking"
config MODULE_SIG_KEY
string "File name or PKCS#11 URI of module signing key"
default "certs/signing_key.pem"
depends on MODULE_SIG
depends on MODULE_SIG || IMA_APPRAISE_MODSIG
help
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

8
certs/Makefile
View File

@@ -32,6 +32,14 @@ endif # CONFIG_SYSTEM_TRUSTED_KEYRING
clean-files := x509_certificate_list .x509.list
ifeq ($(CONFIG_MODULE_SIG),y)
SIGN_KEY = y
endif
ifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y)
SIGN_KEY = y
endif
ifdef SIGN_KEY
###############################################################################
#
# If module signing is requested, say by allyesconfig, but a key has not been