1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2cfc411e7SDavid Howells# 3cfc411e7SDavid Howells# Makefile for the linux kernel signature checking certificates. 4cfc411e7SDavid Howells# 5cfc411e7SDavid Howells 62565ca7fSEric Snowbergobj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o 7d1f04410SEric Snowbergobj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o 8d1f04410SEric Snowbergobj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o 9734114f8SDavid Howellsifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"") 10734114f8SDavid Howellsobj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o 11734114f8SDavid Howellselse 12734114f8SDavid Howellsobj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o 13734114f8SDavid Howellsendif 14cfc411e7SDavid Howells 151c4bd9f7SMasahiro Yamadaquiet_cmd_extract_certs = CERT $@ 161c4bd9f7SMasahiro Yamada cmd_extract_certs = scripts/extract-cert $(2) $@ 171c4bd9f7SMasahiro Yamada 18cfc411e7SDavid Howellsifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y) 19cfc411e7SDavid Howells 20cfc411e7SDavid Howells$(eval $(call config_filename,SYSTEM_TRUSTED_KEYS)) 21cfc411e7SDavid Howells 22cfc411e7SDavid Howells# GCC doesn't include .incbin files in -MD generated dependencies (PR#66871) 23cfc411e7SDavid Howells$(obj)/system_certificates.o: $(obj)/x509_certificate_list 24cfc411e7SDavid Howells 25cfc411e7SDavid Howells$(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(SYSTEM_TRUSTED_KEYS_FILENAME) FORCE 26cfc411e7SDavid Howells $(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS)) 275ccbdbf9SJarkko Sakkinenendif # CONFIG_SYSTEM_TRUSTED_KEYRING 28cfc411e7SDavid Howells 29*5cca3606SMasahiro Yamadatargets += x509_certificate_list 30cfc411e7SDavid Howells 31cfc411e7SDavid Howellsifeq ($(CONFIG_MODULE_SIG),y) 320165f4caSNayna Jain SIGN_KEY = y 330165f4caSNayna Jainendif 340165f4caSNayna Jain 350165f4caSNayna Jainifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y) 36781a5739SNayna Jainifeq ($(CONFIG_MODULES),y) 370165f4caSNayna Jain SIGN_KEY = y 380165f4caSNayna Jainendif 39781a5739SNayna Jainendif 400165f4caSNayna Jain 410165f4caSNayna Jainifdef SIGN_KEY 42cfc411e7SDavid Howells############################################################################### 43cfc411e7SDavid Howells# 44cfc411e7SDavid Howells# If module signing is requested, say by allyesconfig, but a key has not been 45cfc411e7SDavid Howells# supplied, then one will need to be generated to make sure the build does not 46cfc411e7SDavid Howells# fail and that the kernel may be used afterwards. 47cfc411e7SDavid Howells# 48cfc411e7SDavid Howells############################################################################### 49cfc411e7SDavid Howells 50cfc411e7SDavid Howells# We do it this way rather than having a boolean option for enabling an 51cfc411e7SDavid Howells# external private key, because 'make randconfig' might enable such a 52cfc411e7SDavid Howells# boolean option and we unfortunately can't make it depend on !RANDCONFIG. 53cfc411e7SDavid Howellsifeq ($(CONFIG_MODULE_SIG_KEY),"certs/signing_key.pem") 54ea35e0d5SStefan Berger 55e06a61a8SMasahiro Yamadakeytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_curve:secp384r1 56ea35e0d5SStefan Berger 5754c8b517SMasahiro Yamadaquiet_cmd_gen_key = GENKEY $@ 5854c8b517SMasahiro Yamada cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ 59c537e4d0SMasahiro Yamada -batch -x509 -config $< \ 60c537e4d0SMasahiro Yamada -outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1 6154c8b517SMasahiro Yamada 62e06a61a8SMasahiro Yamada$(obj)/signing_key.pem: $(obj)/x509.genkey FORCE 63e06a61a8SMasahiro Yamada $(call if_changed,gen_key) 64e06a61a8SMasahiro Yamada 65e06a61a8SMasahiro Yamadatargets += signing_key.pem 66cfc411e7SDavid Howells 67f3a2ba44SMasahiro Yamadaquiet_cmd_copy_x509_config = COPY $@ 68f3a2ba44SMasahiro Yamada cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@ 69f3a2ba44SMasahiro Yamada 70f3a2ba44SMasahiro Yamada# You can provide your own config file. If not present, copy the default one. 71cfc411e7SDavid Howells$(obj)/x509.genkey: 72f3a2ba44SMasahiro Yamada $(call cmd,copy_x509_config) 73f3a2ba44SMasahiro Yamada 745ccbdbf9SJarkko Sakkinenendif # CONFIG_MODULE_SIG_KEY 75cfc411e7SDavid Howells 76cfc411e7SDavid Howells$(eval $(call config_filename,MODULE_SIG_KEY)) 77cfc411e7SDavid Howells 78cfc411e7SDavid Howells# If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it 79cfc411e7SDavid Howellsifeq ($(patsubst pkcs11:%,%,$(firstword $(MODULE_SIG_KEY_FILENAME))),$(firstword $(MODULE_SIG_KEY_FILENAME))) 80cfc411e7SDavid HowellsX509_DEP := $(MODULE_SIG_KEY_SRCPREFIX)$(MODULE_SIG_KEY_FILENAME) 81cfc411e7SDavid Howellsendif 82cfc411e7SDavid Howells 83cfc411e7SDavid Howells# GCC PR#66871 again. 84cfc411e7SDavid Howells$(obj)/system_certificates.o: $(obj)/signing_key.x509 85cfc411e7SDavid Howells 8662172c81SDavid Woodhouse$(obj)/signing_key.x509: scripts/extract-cert $(X509_DEP) FORCE 8762172c81SDavid Woodhouse $(call if_changed,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY)) 885ccbdbf9SJarkko Sakkinenendif # CONFIG_MODULE_SIG 89d1f04410SEric Snowberg 90*5cca3606SMasahiro Yamadatargets += signing_key.x509 91*5cca3606SMasahiro Yamada 92d1f04410SEric Snowbergifeq ($(CONFIG_SYSTEM_REVOCATION_LIST),y) 93d1f04410SEric Snowberg 94d1f04410SEric Snowberg$(eval $(call config_filename,SYSTEM_REVOCATION_KEYS)) 95d1f04410SEric Snowberg 96d1f04410SEric Snowberg$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list 97d1f04410SEric Snowberg 98d1f04410SEric Snowberg$(obj)/x509_revocation_list: scripts/extract-cert $(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(SYSTEM_REVOCATION_KEYS_FILENAME) FORCE 99d1f04410SEric Snowberg $(call if_changed,extract_certs,$(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_REVOCATION_KEYS)) 100d1f04410SEric Snowbergendif 101*5cca3606SMasahiro Yamada 102*5cca3606SMasahiro Yamadatargets += x509_revocation_list 103