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 660050ffeSDavid Howellsobj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o 731f6d95cSMasahiro Yamadaobj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o blacklist_hashes.o 8d1f04410SEric Snowbergobj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o 9addf4663SMickaël Salaün 1027b5b22dSMasahiro Yamada$(obj)/blacklist_hashes.o: $(obj)/blacklist_hash_list 1127b5b22dSMasahiro YamadaCFLAGS_blacklist_hashes.o := -I $(obj) 12addf4663SMickaël Salaün 1327b5b22dSMasahiro Yamadaquiet_cmd_check_and_copy_blacklist_hash_list = GEN $@ 1427b5b22dSMasahiro Yamada cmd_check_and_copy_blacklist_hash_list = \ 1531f6d95cSMasahiro Yamada $(if $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST), \ 169008a676SMasahiro Yamada $(AWK) -f $(srctree)/$(src)/check-blacklist-hashes.awk $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \ 1731f6d95cSMasahiro Yamada { cat $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST); echo $(comma) NULL; } > $@, \ 1831f6d95cSMasahiro Yamada echo NULL > $@) 19addf4663SMickaël Salaün 2027b5b22dSMasahiro Yamada$(obj)/blacklist_hash_list: $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) FORCE 2127b5b22dSMasahiro Yamada $(call if_changed,check_and_copy_blacklist_hash_list) 2231f6d95cSMasahiro Yamada 2327b5b22dSMasahiro Yamadatargets += blacklist_hash_list 24cfc411e7SDavid Howells 251c4bd9f7SMasahiro Yamadaquiet_cmd_extract_certs = CERT $@ 26*b1c3d2beSJan Luebbe cmd_extract_certs = $(obj)/extract-cert "$(extract-cert-in)" $@ 27*b1c3d2beSJan Luebbeextract-cert-in = $(filter-out $(obj)/extract-cert, $(real-prereqs)) 281c4bd9f7SMasahiro Yamada 29cfc411e7SDavid Howells$(obj)/system_certificates.o: $(obj)/x509_certificate_list 30cfc411e7SDavid Howells 31340a0253SMasahiro Yamada$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) $(obj)/extract-cert FORCE 32f44b645fSMasahiro Yamada $(call if_changed,extract_certs) 33cfc411e7SDavid Howells 3427b5b22dSMasahiro Yamadatargets += x509_certificate_list 35cfc411e7SDavid Howells 36cfc411e7SDavid Howells# If module signing is requested, say by allyesconfig, but a key has not been 37cfc411e7SDavid Howells# supplied, then one will need to be generated to make sure the build does not 38cfc411e7SDavid Howells# fail and that the kernel may be used afterwards. 39cfc411e7SDavid Howells# 40cfc411e7SDavid Howells# We do it this way rather than having a boolean option for enabling an 41cfc411e7SDavid Howells# external private key, because 'make randconfig' might enable such a 42cfc411e7SDavid Howells# boolean option and we unfortunately can't make it depend on !RANDCONFIG. 43129ab0d2SMasahiro Yamadaifeq ($(CONFIG_MODULE_SIG_KEY),certs/signing_key.pem) 44ea35e0d5SStefan Berger 45e06a61a8SMasahiro Yamadakeytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_curve:secp384r1 46ea35e0d5SStefan Berger 4754c8b517SMasahiro Yamadaquiet_cmd_gen_key = GENKEY $@ 4854c8b517SMasahiro Yamada cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ 49c537e4d0SMasahiro Yamada -batch -x509 -config $< \ 50c537e4d0SMasahiro Yamada -outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1 5154c8b517SMasahiro Yamada 52e06a61a8SMasahiro Yamada$(obj)/signing_key.pem: $(obj)/x509.genkey FORCE 53e06a61a8SMasahiro Yamada $(call if_changed,gen_key) 54e06a61a8SMasahiro Yamada 55e06a61a8SMasahiro Yamadatargets += signing_key.pem 56cfc411e7SDavid Howells 57f3a2ba44SMasahiro Yamadaquiet_cmd_copy_x509_config = COPY $@ 58f3a2ba44SMasahiro Yamada cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@ 59f3a2ba44SMasahiro Yamada 60f3a2ba44SMasahiro Yamada# You can provide your own config file. If not present, copy the default one. 61cfc411e7SDavid Howells$(obj)/x509.genkey: 62f3a2ba44SMasahiro Yamada $(call cmd,copy_x509_config) 63f3a2ba44SMasahiro Yamada 645ccbdbf9SJarkko Sakkinenendif # CONFIG_MODULE_SIG_KEY 65cfc411e7SDavid Howells 66cfc411e7SDavid Howells$(obj)/system_certificates.o: $(obj)/signing_key.x509 67cfc411e7SDavid Howells 68f44b645fSMasahiro YamadaPKCS11_URI := $(filter pkcs11:%, $(CONFIG_MODULE_SIG_KEY)) 69f44b645fSMasahiro Yamadaifdef PKCS11_URI 70f44b645fSMasahiro Yamada$(obj)/signing_key.x509: extract-cert-in := $(PKCS11_URI) 71f44b645fSMasahiro Yamadaendif 72f44b645fSMasahiro Yamada 73f44b645fSMasahiro Yamada$(obj)/signing_key.x509: $(filter-out $(PKCS11_URI),$(CONFIG_MODULE_SIG_KEY)) $(obj)/extract-cert FORCE 74f44b645fSMasahiro Yamada $(call if_changed,extract_certs) 75d1f04410SEric Snowberg 765cca3606SMasahiro Yamadatargets += signing_key.x509 775cca3606SMasahiro Yamada 78d1f04410SEric Snowberg$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list 79d1f04410SEric Snowberg 80340a0253SMasahiro Yamada$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) $(obj)/extract-cert FORCE 81f44b645fSMasahiro Yamada $(call if_changed,extract_certs) 825cca3606SMasahiro Yamada 835cca3606SMasahiro Yamadatargets += x509_revocation_list 84340a0253SMasahiro Yamada 85340a0253SMasahiro Yamadahostprogs := extract-cert 86340a0253SMasahiro Yamada 87d5ea4fecSChun-Tse ShaoHOSTCFLAGS_extract-cert.o = $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) 88d5ea4fecSChun-Tse ShaoHOSTLDLIBS_extract-cert = $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 89