1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # 2 #
3 # Makefile for the linux kernel signature chec 3 # Makefile for the linux kernel signature checking certificates.
4 # 4 #
5 5
6 obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system !! 6 obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o
7 obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blac !! 7 obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o
8 obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revoca 8 obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o
9 !! 9 ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),)
10 $(obj)/blacklist_hashes.o: $(obj)/blacklist_ha !! 10 obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o
11 CFLAGS_blacklist_hashes.o := -I $(obj) !! 11 else
12 !! 12 obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o
13 quiet_cmd_check_and_copy_blacklist_hash_list = !! 13 endif
14 cmd_check_and_copy_blacklist_hash_list = <<
15 $(if $(CONFIG_SYSTEM_BLACKLIST_HASH_LI <<
16 $(AWK) -f $(src)/check-blacklist-hashe <<
17 { cat $(CONFIG_SYSTEM_BLACKLIST_HASH_L <<
18 echo NULL > $@) <<
19 <<
20 $(obj)/blacklist_hash_list: $(CONFIG_SYSTEM_BL <<
21 $(call if_changed,check_and_copy_black <<
22 <<
23 targets += blacklist_hash_list <<
24 14
25 quiet_cmd_extract_certs = CERT $@ 15 quiet_cmd_extract_certs = CERT $@
26 cmd_extract_certs = $(obj)/extract-cert !! 16 cmd_extract_certs = $(obj)/extract-cert $(2) $@
27 extract-cert-in = $(filter-out $(obj)/extract- <<
28 17
29 $(obj)/system_certificates.o: $(obj)/x509_cert 18 $(obj)/system_certificates.o: $(obj)/x509_certificate_list
30 19
31 $(obj)/x509_certificate_list: $(CONFIG_SYSTEM_ 20 $(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) $(obj)/extract-cert FORCE
32 $(call if_changed,extract_certs) !! 21 $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_TRUSTED_KEYS),$<,""))
33 22
34 targets += x509_certificate_list 23 targets += x509_certificate_list
35 24
>> 25 ifeq ($(CONFIG_MODULE_SIG),y)
>> 26 SIGN_KEY = y
>> 27 endif
>> 28
>> 29 ifeq ($(CONFIG_IMA_APPRAISE_MODSIG),y)
>> 30 ifeq ($(CONFIG_MODULES),y)
>> 31 SIGN_KEY = y
>> 32 endif
>> 33 endif
>> 34
>> 35 ifdef SIGN_KEY
>> 36 ###############################################################################
>> 37 #
36 # If module signing is requested, say by allye 38 # If module signing is requested, say by allyesconfig, but a key has not been
37 # supplied, then one will need to be generated 39 # supplied, then one will need to be generated to make sure the build does not
38 # fail and that the kernel may be used afterwa 40 # fail and that the kernel may be used afterwards.
39 # 41 #
>> 42 ###############################################################################
>> 43
40 # We do it this way rather than having a boole 44 # We do it this way rather than having a boolean option for enabling an
41 # external private key, because 'make randconf 45 # external private key, because 'make randconfig' might enable such a
42 # boolean option and we unfortunately can't ma 46 # boolean option and we unfortunately can't make it depend on !RANDCONFIG.
43 ifeq ($(CONFIG_MODULE_SIG_KEY),certs/signing_k 47 ifeq ($(CONFIG_MODULE_SIG_KEY),certs/signing_key.pem)
44 48
45 keytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := 49 keytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_curve:secp384r1
46 50
47 quiet_cmd_gen_key = GENKEY $@ 51 quiet_cmd_gen_key = GENKEY $@
48 cmd_gen_key = openssl req -new -nodes -u 52 cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
49 -batch -x509 -config $< \ 53 -batch -x509 -config $< \
50 -outform PEM -out $@ -keyout $ 54 -outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1
51 55
52 $(obj)/signing_key.pem: $(obj)/x509.genkey FOR 56 $(obj)/signing_key.pem: $(obj)/x509.genkey FORCE
53 $(call if_changed,gen_key) 57 $(call if_changed,gen_key)
54 58
55 targets += signing_key.pem 59 targets += signing_key.pem
56 60
57 quiet_cmd_copy_x509_config = COPY $@ 61 quiet_cmd_copy_x509_config = COPY $@
58 cmd_copy_x509_config = cat $(src)/defaul !! 62 cmd_copy_x509_config = cat $(srctree)/$(src)/default_x509.genkey > $@
59 63
60 # You can provide your own config file. If not 64 # You can provide your own config file. If not present, copy the default one.
61 $(obj)/x509.genkey: 65 $(obj)/x509.genkey:
62 $(call cmd,copy_x509_config) 66 $(call cmd,copy_x509_config)
63 67
64 endif # CONFIG_MODULE_SIG_KEY 68 endif # CONFIG_MODULE_SIG_KEY
65 69
66 $(obj)/system_certificates.o: $(obj)/signing_k !! 70 # If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it
67 !! 71 ifneq ($(filter-out pkcs11:%, $(CONFIG_MODULE_SIG_KEY)),)
68 PKCS11_URI := $(filter pkcs11:%, $(CONFIG_MODU !! 72 X509_DEP := $(CONFIG_MODULE_SIG_KEY)
69 ifdef PKCS11_URI <<
70 $(obj)/signing_key.x509: extract-cert-in := $( <<
71 endif 73 endif
72 74
73 $(obj)/signing_key.x509: $(filter-out $(PKCS11 !! 75 $(obj)/system_certificates.o: $(obj)/signing_key.x509
74 $(call if_changed,extract_certs) !! 76
>> 77 $(obj)/signing_key.x509: $(X509_DEP) $(obj)/extract-cert FORCE
>> 78 $(call if_changed,extract_certs,$(if $(CONFIG_MODULE_SIG_KEY),$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY)),""))
>> 79 endif # CONFIG_MODULE_SIG
75 80
76 targets += signing_key.x509 81 targets += signing_key.x509
77 82
78 $(obj)/revocation_certificates.o: $(obj)/x509_ 83 $(obj)/revocation_certificates.o: $(obj)/x509_revocation_list
79 84
80 $(obj)/x509_revocation_list: $(CONFIG_SYSTEM_R 85 $(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) $(obj)/extract-cert FORCE
81 $(call if_changed,extract_certs) !! 86 $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_REVOCATION_KEYS),$<,""))
82 87
83 targets += x509_revocation_list 88 targets += x509_revocation_list
84 89
85 hostprogs := extract-cert 90 hostprogs := extract-cert
86 91
87 HOSTCFLAGS_extract-cert.o = $(shell $(HOSTPKG_ !! 92 HOSTCFLAGS_extract-cert.o = $(shell pkg-config --cflags libcrypto 2> /dev/null)
88 HOSTLDLIBS_extract-cert = $(shell $(HOSTPKG_CO !! 93 HOSTLDLIBS_extract-cert = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.