From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934304AbbEOQx3 (ORCPT ); Fri, 15 May 2015 12:53:29 -0400 Received: from casper.infradead.org ([85.118.1.10]:60186 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753813AbbEOQx1 (ORCPT ); Fri, 15 May 2015 12:53:27 -0400 Message-ID: <1431708804.4727.10.camel@infradead.org> Subject: [PATCH 2/4] modsign: Allow external signing key to be specified From: David Woodhouse To: dhowells@redhat.com Cc: rusty@rustcorp.com.au, mmarek@suse.cz, mjg59@srcf.ucam.org, keyrings@linux-nfs.org, dmitry.kasatkin@gmail.com, mcgrof@suse.com, linux-kernel@vger.kernel.org, dhowells@redhat.com, seth.forshee@canonical.com, linux-security-module@vger.kernel.org Date: Fri, 15 May 2015 17:53:24 +0100 In-Reply-To: <20150515123513.16723.96340.stgit@warthog.procyon.org.uk> References: <20150515123513.16723.96340.stgit@warthog.procyon.org.uk> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-+Bpwm7W0M1acA2d6AH0J" X-Mailer: Evolution 3.16.1 (3.16.1-1.2.git20150428.fc22) Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-+Bpwm7W0M1acA2d6AH0J Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Signed-off-by: David Woodhouse --- Makefile | 2 +- init/Kconfig | 13 +++++++++++++ kernel/Makefile | 6 ++++++ 3 files changed, 20 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index ad27fc9..9590e67 100644 --- a/Makefile +++ b/Makefile @@ -872,7 +872,7 @@ INITRD_COMPRESS-$(CONFIG_RD_LZ4) :=3D lz4 # export INITRD_COMPRESS :=3D $(INITRD_COMPRESS-y) =20 ifdef CONFIG_MODULE_SIG_ALL -MODSECKEY =3D ./signing_key.priv +MODSECKEY =3D $(CONFIG_MODULE_SIG_KEY) MODPUBKEY =3D ./signing_key.x509 export MODPUBKEY mod_sign_cmd =3D scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) = $(MODPUBKEY) diff --git a/init/Kconfig b/init/Kconfig index c05afd6..1ca075a 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1954,6 +1954,19 @@ config MODULE_SIG_HASH default "sha384" if MODULE_SIG_SHA384 default "sha512" if MODULE_SIG_SHA512 =20 +config MODULE_SIG_EXTERNAL_KEY + bool "Use external key for module signing" + depends on MODULE_SIG_ALL + help + Use an external private key for module signing. + +config MODULE_SIG_KEY + string "File name or PKCS#11 URI of module signing key" if MODULE_S= IG_EXTERNAL_KEY + default "signing_key.priv" + help + Provide the file name of a private key in PEM format, or a PKCS#1= 1 + URI according to RFC7512 to specify the key. + config MODULE_COMPRESS bool "Compress modules on installation" depends on MODULES diff --git a/kernel/Makefile b/kernel/Makefile index 60c302c..b1a718c 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -170,6 +170,11 @@ ifndef CONFIG_MODULE_SIG_HASH $(error Could not determine digest type to use from kernel config) endif =20 +# 'make randconfig' might enable CONFIG_MODULE_SIG_EXTERNAL_KEY but will +# leave any strings at their default settings. We want to let the automati= c +# key generation work in that case, which is why we check the string here +# instead of just using 'ifndef CONFIG_MODULE_SIG_EXTERNAL_KEY'. +ifeq ($(CONFIG_MODULE_SIG_KEY),"signing_key.priv") signing_key.priv signing_key.x509: x509.genkey @echo "###" @echo "### Now generating an X.509 key pair to be used for signing = modules." @@ -207,3 +212,4 @@ x509.genkey: @echo >>x509.genkey "subjectKeyIdentifier=3Dhash" @echo >>x509.genkey "authorityKeyIdentifier=3Dkeyid" endif +endif --=20 2.4.0 --=20 David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation --=-+Bpwm7W0M1acA2d6AH0J Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISjjCCBicw ggUPoAMCAQICAw3vNzANBgkqhkiG9w0BAQUFADCBjDELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0 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