From patchwork Fri Mar 11 21:03:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 12778619 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A955AC433F5 for ; Fri, 11 Mar 2022 22:48:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229825AbiCKWt3 (ORCPT ); Fri, 11 Mar 2022 17:49:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229684AbiCKWtY (ORCPT ); Fri, 11 Mar 2022 17:49:24 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA8E02BF58E; Fri, 11 Mar 2022 14:23:27 -0800 (PST) Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 22BJ2j2P028836; 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Fri, 11 Mar 2022 21:03:53 +0000 (GMT) Received: from li-4b5937cc-25c4-11b2-a85c-cea3a66903e4.ibm.com.com (unknown [9.211.110.168]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 11 Mar 2022 21:03:52 +0000 (GMT) From: Nayna Jain To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: dhowells@redhat.com, zohar@linux.ibm.com, jarkko@kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, dimitri.ledkov@canonical.com, seth@forshee.me, rnsastry@linux.ibm.com, masahiroy@kernel.org, Nayna Jain Subject: [PATCH v12 1/4] certs: export load_certificate_list() to be used outside certs/ Date: Fri, 11 Mar 2022 16:03:41 -0500 Message-Id: <20220311210344.102396-2-nayna@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220311210344.102396-1-nayna@linux.ibm.com> References: <20220311210344.102396-1-nayna@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: d8xPg5-iqVQE4dULk1MQR9m2X5elnmIh X-Proofpoint-GUID: l0uZVR-pKjUeuhADkL5sVg5NfLnQOQvd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-11_09,2022-03-11_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 malwarescore=0 mlxlogscore=999 priorityscore=1501 impostorscore=0 phishscore=0 clxscore=1015 spamscore=0 mlxscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2203110103 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org load_certificate_list() parses certificates embedded in the kernel image to load them onto the keyring. Commit "2565ca7f5ec1 (certs: Move load_system_certificate_list to a common function)" made load_certificate_list() a common function in the certs/ directory. Export load_certificate_list() outside certs/ to be used by load_platform_certificate_list() for loading compiled in platform keys onto the .platform keyring at boot time. Reviewed-by: Mimi Zohar Signed-off-by: Nayna Jain --- certs/Makefile | 5 +++-- certs/blacklist.c | 1 - certs/common.c | 2 +- certs/common.h | 9 --------- certs/system_keyring.c | 1 - include/keys/system_keyring.h | 6 ++++++ 6 files changed, 10 insertions(+), 14 deletions(-) delete mode 100644 certs/common.h diff --git a/certs/Makefile b/certs/Makefile index 3ea7fe60823f..b92b6ff339d5 100644 --- a/certs/Makefile +++ b/certs/Makefile @@ -3,8 +3,9 @@ # Makefile for the linux kernel signature checking certificates. # -obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o -obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o +obj-$(CONFIG_KEYS) += common.o +obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o +obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),) obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o diff --git a/certs/blacklist.c b/certs/blacklist.c index c9a435b15af4..b95e9b19c42f 100644 --- a/certs/blacklist.c +++ b/certs/blacklist.c @@ -17,7 +17,6 @@ #include #include #include "blacklist.h" -#include "common.h" static struct key *blacklist_keyring; diff --git a/certs/common.c b/certs/common.c index 16a220887a53..41f763415a00 100644 --- a/certs/common.c +++ b/certs/common.c @@ -2,7 +2,7 @@ #include #include -#include "common.h" +#include int load_certificate_list(const u8 cert_list[], const unsigned long list_size, diff --git a/certs/common.h b/certs/common.h deleted file mode 100644 index abdb5795936b..000000000000 --- a/certs/common.h +++ /dev/null @@ -1,9 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ - -#ifndef _CERT_COMMON_H -#define _CERT_COMMON_H - -int load_certificate_list(const u8 cert_list[], const unsigned long list_size, - const struct key *keyring); - -#endif diff --git a/certs/system_keyring.c b/certs/system_keyring.c index 05b66ce9d1c9..2ae1b2e34375 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -16,7 +16,6 @@ #include #include #include -#include "common.h" static struct key *builtin_trusted_keys; #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 2419a735420f..35babdc45689 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -10,6 +10,12 @@ #include +#ifdef CONFIG_KEYS +int load_certificate_list(const u8 cert_list[], + const unsigned long list_size, + const struct key *keyring); +#endif + #ifdef CONFIG_SYSTEM_TRUSTED_KEYRING extern int restrict_link_by_builtin_trusted(struct key *keyring, From patchwork Fri Mar 11 21:03:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 12778638 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42E95C4332F for ; Fri, 11 Mar 2022 22:53:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230082AbiCKWyz (ORCPT ); Fri, 11 Mar 2022 17:54:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230099AbiCKWyj (ORCPT ); Fri, 11 Mar 2022 17:54:39 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 106352706DE; 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Fri, 11 Mar 2022 21:04:00 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 09E0A4C04A; Fri, 11 Mar 2022 21:03:57 +0000 (GMT) Received: from li-4b5937cc-25c4-11b2-a85c-cea3a66903e4.ibm.com.com (unknown [9.211.110.168]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 11 Mar 2022 21:03:56 +0000 (GMT) From: Nayna Jain To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: dhowells@redhat.com, zohar@linux.ibm.com, jarkko@kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, dimitri.ledkov@canonical.com, seth@forshee.me, rnsastry@linux.ibm.com, masahiroy@kernel.org, Nayna Jain Subject: [PATCH v12 2/4] integrity: make integrity_keyring_from_id() non-static Date: Fri, 11 Mar 2022 16:03:42 -0500 Message-Id: <20220311210344.102396-3-nayna@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220311210344.102396-1-nayna@linux.ibm.com> References: <20220311210344.102396-1-nayna@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: GVioA75BLK0CflhTIS__0pKMBbGiD-3F X-Proofpoint-ORIG-GUID: k3Lzpy4Us1g2M6nhCtrlTq64GCvLA9-7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-11_08,2022-03-11_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 bulkscore=0 spamscore=0 phishscore=0 malwarescore=0 adultscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 mlxscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2203110103 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org Make integrity_keyring_from_id() non-static so that it is accessible by other files in security/integrity. Reviewed-by: Mimi Zohar Signed-off-by: Nayna Jain --- security/integrity/digsig.c | 2 +- security/integrity/integrity.h | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index c8c8a4a4e7a0..9c3165c07935 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -39,7 +39,7 @@ static const char * const keyring_name[INTEGRITY_KEYRING_MAX] = { #define restrict_link_to_ima restrict_link_by_builtin_trusted #endif -static struct key *integrity_keyring_from_id(const unsigned int id) +struct key *integrity_keyring_from_id(const unsigned int id) { if (id >= INTEGRITY_KEYRING_MAX) return ERR_PTR(-EINVAL); diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 2e214c761158..76e9a9515f99 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -168,6 +168,7 @@ int __init integrity_init_keyring(const unsigned int id); int __init integrity_load_x509(const unsigned int id, const char *path); int __init integrity_load_cert(const unsigned int id, const char *source, const void *data, size_t len, key_perm_t perm); +struct key *integrity_keyring_from_id(const unsigned int id); #else static inline int integrity_digsig_verify(const unsigned int id, @@ -195,6 +196,11 @@ static inline int __init integrity_load_cert(const unsigned int id, { return 0; } + +static inline struct key *integrity_keyring_from_id(const unsigned int id) +{ + return ERR_PTR(-EOPNOTSUPP); +} #endif /* CONFIG_INTEGRITY_SIGNATURE */ #ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS From patchwork Fri Mar 11 21:03:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 12778618 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C987C433EF for ; Fri, 11 Mar 2022 22:47:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229532AbiCKWsO (ORCPT ); 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Fri, 11 Mar 2022 21:04:04 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 794CE4C044; Fri, 11 Mar 2022 21:04:04 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EA4424C04A; Fri, 11 Mar 2022 21:04:00 +0000 (GMT) Received: from li-4b5937cc-25c4-11b2-a85c-cea3a66903e4.ibm.com.com (unknown [9.211.110.168]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 11 Mar 2022 21:04:00 +0000 (GMT) From: Nayna Jain To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: dhowells@redhat.com, zohar@linux.ibm.com, jarkko@kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, dimitri.ledkov@canonical.com, seth@forshee.me, rnsastry@linux.ibm.com, masahiroy@kernel.org, Nayna Jain Subject: [PATCH v12 3/4] Revert "certs: move scripts/extract-cert to certs/" Date: Fri, 11 Mar 2022 16:03:43 -0500 Message-Id: <20220311210344.102396-4-nayna@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220311210344.102396-1-nayna@linux.ibm.com> References: <20220311210344.102396-1-nayna@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: _q_TZ-tT8swzcoq0TjhDlkqVAnv9rVcB X-Proofpoint-GUID: hgIUDV40yWuKk1lrLc0BTMgepHsIWZzI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-11_09,2022-03-11_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 bulkscore=0 malwarescore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 mlxlogscore=999 adultscore=0 impostorscore=0 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2203110103 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org This reverts commit 340a02535ee785c64c62a9c45706597a0139e972. extract-cert is used outside certs/ by INTEGRITY_PLATFORM_KEYRING. Signed-off-by: Nayna Jain --- MAINTAINERS | 1 + certs/.gitignore | 1 - certs/Makefile | 13 ++++--------- scripts/.gitignore | 1 + scripts/Makefile | 11 +++++++++-- {certs => scripts}/extract-cert.c | 2 +- scripts/remove-stale-files | 2 -- 7 files changed, 16 insertions(+), 15 deletions(-) rename {certs => scripts}/extract-cert.c (98%) diff --git a/MAINTAINERS b/MAINTAINERS index 05fd080b82f3..cf4cd22ca3a0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4471,6 +4471,7 @@ L: keyrings@vger.kernel.org S: Maintained F: Documentation/admin-guide/module-signing.rst F: certs/ +F: scripts/extract-cert.c F: scripts/sign-file.c CFAG12864B LCD DRIVER diff --git a/certs/.gitignore b/certs/.gitignore index 9e42fe3e02f5..8c3763f80be3 100644 --- a/certs/.gitignore +++ b/certs/.gitignore @@ -1,4 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only -/extract-cert /x509_certificate_list /x509_revocation_list diff --git a/certs/Makefile b/certs/Makefile index b92b6ff339d5..a4a6f6a78904 100644 --- a/certs/Makefile +++ b/certs/Makefile @@ -14,11 +14,11 @@ obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_nohashes.o endif quiet_cmd_extract_certs = CERT $@ - cmd_extract_certs = $(obj)/extract-cert $(2) $@ + cmd_extract_certs = scripts/extract-cert $(2) $@ $(obj)/system_certificates.o: $(obj)/x509_certificate_list -$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) $(obj)/extract-cert FORCE +$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) scripts/extract-cert FORCE $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_TRUSTED_KEYS),$<,"")) targets += x509_certificate_list @@ -75,7 +75,7 @@ endif $(obj)/system_certificates.o: $(obj)/signing_key.x509 -$(obj)/signing_key.x509: $(X509_DEP) $(obj)/extract-cert FORCE +$(obj)/signing_key.x509: $(X509_DEP) scripts/extract-cert FORCE $(call if_changed,extract_certs,$(if $(CONFIG_MODULE_SIG_KEY),$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY)),"")) endif # CONFIG_MODULE_SIG @@ -83,12 +83,7 @@ targets += signing_key.x509 $(obj)/revocation_certificates.o: $(obj)/x509_revocation_list -$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) $(obj)/extract-cert FORCE +$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) scripts/extract-cert FORCE $(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_REVOCATION_KEYS),$<,"")) targets += x509_revocation_list - -hostprogs := extract-cert - -HOSTCFLAGS_extract-cert.o = $(shell pkg-config --cflags libcrypto 2> /dev/null) -HOSTLDLIBS_extract-cert = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto) diff --git a/scripts/.gitignore b/scripts/.gitignore index eed308bef604..e83c620ef52c 100644 --- a/scripts/.gitignore +++ b/scripts/.gitignore @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only /asn1_compiler /bin2c +/extract-cert /insert-sys-cert /kallsyms /module.lds diff --git a/scripts/Makefile b/scripts/Makefile index ce5aa9030b74..cedc1f0e21d8 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -3,19 +3,26 @@ # scripts contains sources for various helper programs used throughout # the kernel for the build process. +CRYPTO_LIBS = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto) +CRYPTO_CFLAGS = $(shell pkg-config --cflags libcrypto 2> /dev/null) + hostprogs-always-$(CONFIG_BUILD_BIN2C) += bin2c hostprogs-always-$(CONFIG_KALLSYMS) += kallsyms hostprogs-always-$(BUILD_C_RECORDMCOUNT) += recordmcount hostprogs-always-$(CONFIG_BUILDTIME_TABLE_SORT) += sorttable hostprogs-always-$(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$(srctree)/tools/include HOSTLDLIBS_sorttable = -lpthread HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include -HOSTCFLAGS_sign-file.o = $(shell pkg-config --cflags libcrypto 2> /dev/null) -HOSTLDLIBS_sign-file = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto) +HOSTCFLAGS_sign-file.o = $(CRYPTO_CFLAGS) +HOSTLDLIBS_sign-file = $(CRYPTO_LIBS) +HOSTCFLAGS_extract-cert.o = $(CRYPTO_CFLAGS) +HOSTLDLIBS_extract-cert = $(CRYPTO_LIBS) ifdef CONFIG_UNWINDER_ORC ifeq ($(ARCH),x86_64) diff --git a/certs/extract-cert.c b/scripts/extract-cert.c similarity index 98% rename from certs/extract-cert.c rename to scripts/extract-cert.c index f7ef7862f207..3bc48c726c41 100644 --- a/certs/extract-cert.c +++ b/scripts/extract-cert.c @@ -29,7 +29,7 @@ static __attribute__((noreturn)) void format(void) { fprintf(stderr, - "Usage: extract-cert \n"); + "Usage: scripts/extract-cert \n"); exit(2); } diff --git a/scripts/remove-stale-files b/scripts/remove-stale-files index 7adab4618035..80430b8fb617 100755 --- a/scripts/remove-stale-files +++ b/scripts/remove-stale-files @@ -39,5 +39,3 @@ if [ -n "${building_out_of_srctree}" ]; then rm -f arch/parisc/boot/compressed/${f} done fi - -rm -f scripts/extract-cert From patchwork Fri Mar 11 21:03:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 12778637 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDFF9C433EF for ; Fri, 11 Mar 2022 22:52:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230123AbiCKWxr (ORCPT ); Fri, 11 Mar 2022 17:53:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231194AbiCKWxa (ORCPT ); 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Fri, 11 Mar 2022 20:52:51 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 58B954C040; Fri, 11 Mar 2022 21:04:08 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 06D0B4C044; Fri, 11 Mar 2022 21:04:05 +0000 (GMT) Received: from li-4b5937cc-25c4-11b2-a85c-cea3a66903e4.ibm.com.com (unknown [9.211.110.168]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 11 Mar 2022 21:04:04 +0000 (GMT) From: Nayna Jain To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: dhowells@redhat.com, zohar@linux.ibm.com, jarkko@kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, dimitri.ledkov@canonical.com, seth@forshee.me, rnsastry@linux.ibm.com, masahiroy@kernel.org, Nayna Jain Subject: [PATCH v12 4/4] integrity: support including firmware ".platform" keys at build time Date: Fri, 11 Mar 2022 16:03:44 -0500 Message-Id: <20220311210344.102396-5-nayna@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220311210344.102396-1-nayna@linux.ibm.com> References: <20220311210344.102396-1-nayna@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: nLVnCLBubX1QQ1byyP1hD16iL_mMTain X-Proofpoint-GUID: DO8PiVkQRPNpIlXFc3t7ctO_2pSvozgp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-11_09,2022-03-11_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 impostorscore=0 priorityscore=1501 adultscore=0 mlxscore=0 bulkscore=0 spamscore=0 mlxlogscore=999 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2203110103 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org Allow firmware keys to be embedded in the Linux kernel and loaded onto the ".platform" keyring on boot. The firmware keys can be specified in a file as a list of PEM encoded certificates using new config INTEGRITY_PLATFORM_KEYS. The certificates are embedded in the image by converting the PEM-formatted certificates into DER(binary) and generating security/integrity/platform_certs/platform_certificate_list file at build time. On boot, the embedded certs from the image are loaded onto the ".platform" keyring at late_initcall(), ensuring the platform keyring exists before loading the keys. Reviewed-by: Mimi Zohar Signed-off-by: Nayna Jain --- scripts/Makefile | 1 + security/integrity/Kconfig | 10 ++++++++ security/integrity/Makefile | 15 +++++++++++- security/integrity/integrity.h | 3 +++ .../integrity/platform_certs/platform_cert.S | 23 +++++++++++++++++++ .../platform_certs/platform_keyring.c | 23 +++++++++++++++++++ 6 files changed, 74 insertions(+), 1 deletion(-) create mode 100644 security/integrity/platform_certs/platform_cert.S diff --git a/scripts/Makefile b/scripts/Makefile index cedc1f0e21d8..c569594af4a6 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -15,6 +15,7 @@ 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 +hostprogs-always-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += extract-cert HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include HOSTLDLIBS_sorttable = -lpthread diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig index 599429f99f99..77b2c22c0e1b 100644 --- a/security/integrity/Kconfig +++ b/security/integrity/Kconfig @@ -62,6 +62,16 @@ config INTEGRITY_PLATFORM_KEYRING provided by the platform for verifying the kexec'ed kerned image and, possibly, the initramfs signature. +config INTEGRITY_PLATFORM_KEYS + string "Builtin X.509 keys for .platform keyring" + depends on KEYS + depends on ASYMMETRIC_KEY_TYPE + depends on INTEGRITY_PLATFORM_KEYRING + help + If set, this option should be the filename of a PEM-formatted file + containing X.509 certificates to be loaded onto the ".platform" + keyring. + config INTEGRITY_MACHINE_KEYRING bool "Provide a keyring to which Machine Owner Keys may be added" depends on SECONDARY_TRUSTED_KEYRING diff --git a/security/integrity/Makefile b/security/integrity/Makefile index d0ffe37dc1d6..4154bf4996a9 100644 --- a/security/integrity/Makefile +++ b/security/integrity/Makefile @@ -3,13 +3,17 @@ # Makefile for caching inode integrity data (iint) # +quiet_cmd_extract_certs = CERT $@ + cmd_extract_certs = scripts/extract-cert $(2) $@ + obj-$(CONFIG_INTEGRITY) += integrity.o integrity-y := iint.o integrity-$(CONFIG_INTEGRITY_AUDIT) += integrity_audit.o integrity-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o integrity-$(CONFIG_INTEGRITY_ASYMMETRIC_KEYS) += digsig_asymmetric.o -integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o +integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o \ + platform_certs/platform_cert.o integrity-$(CONFIG_INTEGRITY_MACHINE_KEYRING) += platform_certs/machine_keyring.o integrity-$(CONFIG_LOAD_UEFI_KEYS) += platform_certs/efi_parser.o \ platform_certs/load_uefi.o \ @@ -20,3 +24,12 @@ integrity-$(CONFIG_LOAD_PPC_KEYS) += platform_certs/efi_parser.o \ platform_certs/keyring_handler.o obj-$(CONFIG_IMA) += ima/ obj-$(CONFIG_EVM) += evm/ + +$(obj)/platform_certs/platform_cert.o: $(obj)/platform_certs/platform_certificate_list + +targets += platform_certificate_list + +$(obj)/platform_certs/platform_certificate_list: $(CONFIG_INTEGRITY_PLATFORM_KEYS) scripts/extract-cert FORCE + $(call if_changed,extract_certs,$(if $(CONFIG_INTEGRITY_PLATFORM_KEYS),$<,"")) + +clean-files := platform_certs/platform_certificate_list diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 76e9a9515f99..219da29fecf7 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -282,6 +282,9 @@ integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type) #endif #ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +extern __initconst const u8 platform_certificate_list[]; +extern __initconst const unsigned long platform_certificate_list_size; + void __init add_to_platform_keyring(const char *source, const void *data, size_t len); #else diff --git a/security/integrity/platform_certs/platform_cert.S b/security/integrity/platform_certs/platform_cert.S new file mode 100644 index 000000000000..20bccce5dc5a --- /dev/null +++ b/security/integrity/platform_certs/platform_cert.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include +#include + + __INITRODATA + + .align 8 +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING + .globl platform_certificate_list +platform_certificate_list: +__cert_list_start: + .incbin "security/integrity/platform_certs/platform_certificate_list" +__cert_list_end: +#endif + + .align 8 + .globl platform_certificate_list_size +platform_certificate_list_size: +#ifdef CONFIG_64BIT + .quad __cert_list_end - __cert_list_start +#else + .long __cert_list_end - __cert_list_start +#endif diff --git a/security/integrity/platform_certs/platform_keyring.c b/security/integrity/platform_certs/platform_keyring.c index bcafd7387729..c2368912fd1b 100644 --- a/security/integrity/platform_certs/platform_keyring.c +++ b/security/integrity/platform_certs/platform_keyring.c @@ -12,6 +12,7 @@ #include #include #include +#include #include "../integrity.h" /** @@ -37,6 +38,28 @@ void __init add_to_platform_keyring(const char *source, const void *data, pr_info("Error adding keys to platform keyring %s\n", source); } +static __init int load_platform_certificate_list(void) +{ + const u8 *p; + unsigned long size; + int rc; + struct key *keyring; + + p = platform_certificate_list; + size = platform_certificate_list_size; + + keyring = integrity_keyring_from_id(INTEGRITY_KEYRING_PLATFORM); + if (IS_ERR(keyring)) + return PTR_ERR(keyring); + + rc = load_certificate_list(p, size, keyring); + if (rc) + pr_info("Error adding keys to platform keyring %d\n", rc); + + return rc; +} +late_initcall(load_platform_certificate_list); + /* * Create the trusted keyrings. */