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93 lines
3.2 KiB
93 lines
3.2 KiB
# SPDX-License-Identifier: GPL-2.0 |
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# |
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# Makefile for the linux kernel signature checking certificates. |
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# |
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obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o |
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obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o |
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obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o |
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ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),) |
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obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o |
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else |
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obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o |
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endif |
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quiet_cmd_extract_certs = CERT $@ |
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cmd_extract_certs = $(obj)/extract-cert $(2) $@ |
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$(obj)/system_certificates.o: $(obj)/x509_certificate_list |
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$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) $(obj)/extract-cert FORCE |
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$(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_TRUSTED_KEYS),$<,"")) |
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targets += x509_certificate_list |
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ifeq ($(CONFIG_MODULE_SIG),y) |
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SIGN_KEY = y |
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endif |
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ifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y) |
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ifeq ($(CONFIG_MODULES),y) |
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SIGN_KEY = y |
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endif |
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endif |
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ifdef SIGN_KEY |
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############################################################################### |
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# |
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# If module signing is requested, say by allyesconfig, but a key has not been |
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# supplied, then one will need to be generated to make sure the build does not |
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# fail and that the kernel may be used afterwards. |
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# |
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############################################################################### |
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# We do it this way rather than having a boolean option for enabling an |
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# external private key, because 'make randconfig' might enable such a |
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# boolean option and we unfortunately can't make it depend on !RANDCONFIG. |
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ifeq ($(CONFIG_MODULE_SIG_KEY),certs/signing_key.pem) |
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keytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_curve:secp384r1 |
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quiet_cmd_gen_key = GENKEY $@ |
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cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ |
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-batch -x509 -config $< \ |
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-outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1 |
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$(obj)/signing_key.pem: $(obj)/x509.genkey FORCE |
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$(call if_changed,gen_key) |
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targets += signing_key.pem |
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quiet_cmd_copy_x509_config = COPY $@ |
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cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@ |
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# You can provide your own config file. If not present, copy the default one. |
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$(obj)/x509.genkey: |
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$(call cmd,copy_x509_config) |
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endif # CONFIG_MODULE_SIG_KEY |
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# If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it |
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ifneq ($(filter-out pkcs11:%, $(CONFIG_MODULE_SIG_KEY)),) |
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X509_DEP := $(CONFIG_MODULE_SIG_KEY) |
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endif |
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$(obj)/system_certificates.o: $(obj)/signing_key.x509 |
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$(obj)/signing_key.x509: $(X509_DEP) $(obj)/extract-cert FORCE |
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$(call if_changed,extract_certs,$(if $(CONFIG_MODULE_SIG_KEY),$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY)),"")) |
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endif # CONFIG_MODULE_SIG |
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targets += signing_key.x509 |
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$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list |
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$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) $(obj)/extract-cert FORCE |
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$(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_REVOCATION_KEYS),$<,"")) |
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targets += x509_revocation_list |
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hostprogs := extract-cert |
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HOSTCFLAGS_extract-cert.o = $(shell pkg-config --cflags libcrypto 2> /dev/null) |
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HOSTLDLIBS_extract-cert = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
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