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-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o 9*129ab0d2SMasahiro Yamadaifneq ($(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) $@ 171c4bd9f7SMasahiro Yamada 18cfc411e7SDavid Howells$(obj)/system_certificates.o: $(obj)/x509_certificate_list 19cfc411e7SDavid Howells 20b8c96a6bSMasahiro Yamada$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) scripts/extract-cert FORCE 21b8c96a6bSMasahiro Yamada $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_TRUSTED_KEYS),$<,"")) 22cfc411e7SDavid Howells 235cca3606SMasahiro Yamadatargets += x509_certificate_list 24cfc411e7SDavid Howells 25cfc411e7SDavid Howellsifeq ($(CONFIG_MODULE_SIG),y) 260165f4caSNayna Jain SIGN_KEY = y 270165f4caSNayna Jainendif 280165f4caSNayna Jain 290165f4caSNayna Jainifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y) 30781a5739SNayna Jainifeq ($(CONFIG_MODULES),y) 310165f4caSNayna Jain SIGN_KEY = y 320165f4caSNayna Jainendif 33781a5739SNayna Jainendif 340165f4caSNayna Jain 350165f4caSNayna Jainifdef SIGN_KEY 36cfc411e7SDavid Howells############################################################################### 37cfc411e7SDavid Howells# 38cfc411e7SDavid Howells# If module signing is requested, say by allyesconfig, but a key has not been 39cfc411e7SDavid Howells# supplied, then one will need to be generated to make sure the build does not 40cfc411e7SDavid Howells# fail and that the kernel may be used afterwards. 41cfc411e7SDavid Howells# 42cfc411e7SDavid Howells############################################################################### 43cfc411e7SDavid Howells 44cfc411e7SDavid Howells# We do it this way rather than having a boolean option for enabling an 45cfc411e7SDavid Howells# external private key, because 'make randconfig' might enable such a 46cfc411e7SDavid Howells# boolean option and we unfortunately can't make it depend on !RANDCONFIG. 47*129ab0d2SMasahiro Yamadaifeq ($(CONFIG_MODULE_SIG_KEY),certs/signing_key.pem) 48ea35e0d5SStefan Berger 49e06a61a8SMasahiro Yamadakeytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_curve:secp384r1 50ea35e0d5SStefan Berger 5154c8b517SMasahiro Yamadaquiet_cmd_gen_key = GENKEY $@ 5254c8b517SMasahiro Yamada cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ 53c537e4d0SMasahiro Yamada -batch -x509 -config $< \ 54c537e4d0SMasahiro Yamada -outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1 5554c8b517SMasahiro Yamada 56e06a61a8SMasahiro Yamada$(obj)/signing_key.pem: $(obj)/x509.genkey FORCE 57e06a61a8SMasahiro Yamada $(call if_changed,gen_key) 58e06a61a8SMasahiro Yamada 59e06a61a8SMasahiro Yamadatargets += signing_key.pem 60cfc411e7SDavid Howells 61f3a2ba44SMasahiro Yamadaquiet_cmd_copy_x509_config = COPY $@ 62f3a2ba44SMasahiro Yamada cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@ 63f3a2ba44SMasahiro Yamada 64f3a2ba44SMasahiro Yamada# You can provide your own config file. If not present, copy the default one. 65cfc411e7SDavid Howells$(obj)/x509.genkey: 66f3a2ba44SMasahiro Yamada $(call cmd,copy_x509_config) 67f3a2ba44SMasahiro Yamada 685ccbdbf9SJarkko Sakkinenendif # CONFIG_MODULE_SIG_KEY 69cfc411e7SDavid Howells 70cfc411e7SDavid Howells# If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it 71b8c96a6bSMasahiro Yamadaifneq ($(filter-out pkcs11:%, %(CONFIG_MODULE_SIG_KEY)),) 72b8c96a6bSMasahiro YamadaX509_DEP := $(CONFIG_MODULE_SIG_KEY) 73cfc411e7SDavid Howellsendif 74cfc411e7SDavid Howells 75cfc411e7SDavid Howells$(obj)/system_certificates.o: $(obj)/signing_key.x509 76cfc411e7SDavid Howells 77b8c96a6bSMasahiro Yamada$(obj)/signing_key.x509: $(X509_DEP) scripts/extract-cert FORCE 78b8c96a6bSMasahiro Yamada $(call if_changed,extract_certs,$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY))) 795ccbdbf9SJarkko Sakkinenendif # CONFIG_MODULE_SIG 80d1f04410SEric Snowberg 815cca3606SMasahiro Yamadatargets += signing_key.x509 825cca3606SMasahiro Yamada 83d1f04410SEric Snowberg$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list 84d1f04410SEric Snowberg 85b8c96a6bSMasahiro Yamada$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) scripts/extract-cert FORCE 86b8c96a6bSMasahiro Yamada $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_REVOCATION_KEYS),$<,"")) 875cca3606SMasahiro Yamada 885cca3606SMasahiro Yamadatargets += x509_revocation_list 89