mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 20:32:22 +00:00
certs: Add ability to preload revocation certs
Add a new Kconfig option called SYSTEM_REVOCATION_KEYS. If set, this option should be the filename of a PEM-formated file containing X.509 certificates to be included in the default blacklist keyring. DH Changes: - Make the new Kconfig option depend on SYSTEM_REVOCATION_LIST. - Fix SYSTEM_REVOCATION_KEYS=n, but CONFIG_SYSTEM_REVOCATION_LIST=y[1][2]. - Use CONFIG_SYSTEM_REVOCATION_LIST for extract-cert[3]. - Use CONFIG_SYSTEM_REVOCATION_LIST for revocation_certificates.o[3]. Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com> Acked-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: David Howells <dhowells@redhat.com> cc: Randy Dunlap <rdunlap@infradead.org> cc: keyrings@vger.kernel.org Link: https://lore.kernel.org/r/e1c15c74-82ce-3a69-44de-a33af9b320ea@infradead.org/ [1] Link: https://lore.kernel.org/r/20210303034418.106762-1-eric.snowberg@oracle.com/ [2] Link: https://lore.kernel.org/r/20210304175030.184131-1-eric.snowberg@oracle.com/ [3] Link: https://lore.kernel.org/r/20200930201508.35113-3-eric.snowberg@oracle.com/ Link: https://lore.kernel.org/r/20210122181054.32635-4-eric.snowberg@oracle.com/ # v5 Link: https://lore.kernel.org/r/161428673564.677100.4112098280028451629.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/161433312452.902181.4146169951896577982.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161529606657.163428.3340689182456495390.stgit@warthog.procyon.org.uk/ # v3
This commit is contained in:
Eric Snowberg
David Howells
parent
2565ca7f5e
commit
d1f044103d
@ -92,4 +92,12 @@ config SYSTEM_REVOCATION_LIST
|
||||
blacklist keyring and implements a hook whereby a PKCS#7 message can
|
||||
be checked to see if it matches such a certificate.
|
||||
|
||||
config SYSTEM_REVOCATION_KEYS
|
||||
string "X.509 certificates to be preloaded into the system blacklist keyring"
|
||||
depends on SYSTEM_REVOCATION_LIST
|
||||
help
|
||||
If set, this option should be the filename of a PEM-formatted file
|
||||
containing X.509 certificates to be included in the default blacklist
|
||||
keyring.
|
||||
|
||||
endmenu
|
||||
|
||||
@ -4,7 +4,8 @@
|
||||
#
|
||||
|
||||
obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o
|
||||
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o
|
||||
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o
|
||||
obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o
|
||||
ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"")
|
||||
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o
|
||||
else
|
||||
@ -29,7 +30,7 @@ $(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREF
|
||||
$(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS))
|
||||
endif # CONFIG_SYSTEM_TRUSTED_KEYRING
|
||||
|
||||
clean-files := x509_certificate_list .x509.list
|
||||
clean-files := x509_certificate_list .x509.list x509_revocation_list
|
||||
|
||||
ifeq ($(CONFIG_MODULE_SIG),y)
|
||||
###############################################################################
|
||||
@ -104,3 +105,17 @@ targets += signing_key.x509
|
||||
$(obj)/signing_key.x509: scripts/extract-cert $(X509_DEP) FORCE
|
||||
$(call if_changed,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY))
|
||||
endif # CONFIG_MODULE_SIG
|
||||
|
||||
ifeq ($(CONFIG_SYSTEM_REVOCATION_LIST),y)
|
||||
|
||||
$(eval $(call config_filename,SYSTEM_REVOCATION_KEYS))
|
||||
|
||||
$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list
|
||||
|
||||
quiet_cmd_extract_certs = EXTRACT_CERTS $(patsubst "%",%,$(2))
|
||||
cmd_extract_certs = scripts/extract-cert $(2) $@
|
||||
|
||||
targets += x509_revocation_list
|
||||
$(obj)/x509_revocation_list: scripts/extract-cert $(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(SYSTEM_REVOCATION_KEYS_FILENAME) FORCE
|
||||
$(call if_changed,extract_certs,$(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_REVOCATION_KEYS))
|
||||
endif
|
||||
|
||||
@ -17,9 +17,15 @@
|
||||
#include <linux/uidgid.h>
|
||||
#include <keys/system_keyring.h>
|
||||
#include "blacklist.h"
|
||||
#include "common.h"
|
||||
|
||||
static struct key *blacklist_keyring;
|
||||
|
||||
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
|
||||
extern __initconst const u8 revocation_certificate_list[];
|
||||
extern __initconst const unsigned long revocation_certificate_list_size;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* The description must be a type prefix, a colon and then an even number of
|
||||
* hex digits. The hash is kept in the description.
|
||||
@ -220,3 +226,18 @@ static int __init blacklist_init(void)
|
||||
* Must be initialised before we try and load the keys into the keyring.
|
||||
*/
|
||||
device_initcall(blacklist_init);
|
||||
|
||||
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
|
||||
/*
|
||||
* Load the compiled-in list of revocation X.509 certificates.
|
||||
*/
|
||||
static __init int load_revocation_certificate_list(void)
|
||||
{
|
||||
if (revocation_certificate_list_size)
|
||||
pr_notice("Loading compiled-in revocation X.509 certificates\n");
|
||||
|
||||
return load_certificate_list(revocation_certificate_list, revocation_certificate_list_size,
|
||||
blacklist_keyring);
|
||||
}
|
||||
late_initcall(load_revocation_certificate_list);
|
||||
#endif
|
||||
|
||||
21
certs/revocation_certificates.S
Normal file
21
certs/revocation_certificates.S
Normal file
@ -0,0 +1,21 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#include <linux/export.h>
|
||||
#include <linux/init.h>
|
||||
|
||||
__INITRODATA
|
||||
|
||||
.align 8
|
||||
.globl revocation_certificate_list
|
||||
revocation_certificate_list:
|
||||
__revocation_list_start:
|
||||
.incbin "certs/x509_revocation_list"
|
||||
__revocation_list_end:
|
||||
|
||||
.align 8
|
||||
.globl revocation_certificate_list_size
|
||||
revocation_certificate_list_size:
|
||||
#ifdef CONFIG_64BIT
|
||||
.quad __revocation_list_end - __revocation_list_start
|
||||
#else
|
||||
.long __revocation_list_end - __revocation_list_start
|
||||
#endif
|
||||
@ -11,6 +11,7 @@ hostprogs-always-$(CONFIG_ASN1) += asn1_compiler
|
||||
hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT) += sign-file
|
||||
hostprogs-always-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += extract-cert
|
||||
hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert
|
||||
hostprogs-always-$(CONFIG_SYSTEM_REVOCATION_LIST) += extract-cert
|
||||
|
||||
HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
|
||||
HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
|
||||
|
||||
Loading…
Reference in New Issue
Block a user