From patchwork Wed Jun 2 14:35:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 12294877 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7622C4708F for ; Wed, 2 Jun 2021 14:36:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C31D8610A1 for ; Wed, 2 Jun 2021 14:36:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231866AbhFBOhx (ORCPT ); Wed, 2 Jun 2021 10:37:53 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:5814 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230246AbhFBOht (ORCPT ); Wed, 2 Jun 2021 10:37:49 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 152EYRKN180000; Wed, 2 Jun 2021 10:35:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=yzKYYNpLgG6WmVN4s1YaU80LkoAUSa953OPh2XdLe3o=; b=pKC924DBY6ItA5zT30vrxs989JmgQ4ZoM76kZeNUs9fQA7ayj0FX4m+wK6IkDV3j74Iy JrMWxybNP2zsRYynNmXONLLBnTUCodFIsUm6SlQCooJGNF+GvWzVLnIrNmpwKYU9C4jz Khdue9+CaPl684EWQDZ5pp530phMSEhPbxcBfxLHk9yODSUTuVuZ261XtrTTn1oUo3gu hrQ04p6ZAtzhLNqnxbnXhtZMoQN12Ph9KgJpIlT7PFUihM3lLyGqSHY8vgZdmlzl3+Bf 8kFq2Trqon4X6Lp0EEajdEaplSra4McWD4H1WFCPaQ6dEGz1DrFU2zO1DSPdja4Q4j9N 4g== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 38xbpdgcm8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 02 Jun 2021 10:35:56 -0400 Received: from m0098416.ppops.net (m0098416.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 152EYVGE180733; Wed, 2 Jun 2021 10:35:55 -0400 Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0b-001b2d01.pphosted.com with ESMTP id 38xbpdgckr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 02 Jun 2021 10:35:55 -0400 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 152EWjXt028477; Wed, 2 Jun 2021 14:35:55 GMT Received: from b01cxnp23034.gho.pok.ibm.com (b01cxnp23034.gho.pok.ibm.com [9.57.198.29]) by ppma02wdc.us.ibm.com with ESMTP id 38ud89r65f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 02 Jun 2021 14:35:55 +0000 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 152EZsDK6554052 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 2 Jun 2021 14:35:54 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9277E124052; Wed, 2 Jun 2021 14:35:54 +0000 (GMT) Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8373312405B; Wed, 2 Jun 2021 14:35:54 +0000 (GMT) Received: from localhost.localdomain (unknown [9.47.158.152]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 2 Jun 2021 14:35:54 +0000 (GMT) From: Stefan Berger To: jeyu@kernel.org, keyrings@vger.kernel.org, dhowells@redhat.com, dwmw2@infradead.org, zohar@linux.ibm.com, jarkko@kernel.org Cc: nayna@linux.ibm.com, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Stefan Berger Subject: [PATCH v5 1/2] certs: Trigger creation of RSA module signing key if it's not an RSA key Date: Wed, 2 Jun 2021 10:35:36 -0400 Message-Id: <20210602143537.545132-2-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210602143537.545132-1-stefanb@linux.ibm.com> References: <20210602143537.545132-1-stefanb@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 4VDGT5O215iy2H-2IdxaSy1f5KpVy-lN X-Proofpoint-GUID: fonAFhyLmM8nqiBDPD27yIE5sMjaIEHD X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-06-02_07:2021-06-02,2021-06-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 malwarescore=0 bulkscore=0 adultscore=0 mlxscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 phishscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106020095 Precedence: bulk List-ID: Address a kbuild issue where a developer created an ECDSA key for signing kernel modules and then builds an older version of the kernel, when bi- secting the kernel for example, that does not support ECDSA keys. If openssl is installed, trigger the creation of an RSA module signing key if it is not an RSA key. Fixes: cfc411e7fff3 ("Move certificate handling to its own directory") Signed-off-by: Stefan Berger Cc: David Howells Cc: David Woodhouse --- certs/Makefile | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/certs/Makefile b/certs/Makefile index 359239a0ee9e..72758684d254 100644 --- a/certs/Makefile +++ b/certs/Makefile @@ -57,11 +57,19 @@ endif redirect_openssl = 2>&1 quiet_redirect_openssl = 2>&1 silent_redirect_openssl = 2>/dev/null +openssl_available = $(shell openssl help 2>/dev/null && echo yes) # We do it this way rather than having a boolean option for enabling an # external private key, because 'make randconfig' might enable such a # boolean option and we unfortunately can't make it depend on !RANDCONFIG. ifeq ($(CONFIG_MODULE_SIG_KEY),"certs/signing_key.pem") + +ifeq ($(openssl_available),yes) +X509TEXT=$(shell openssl x509 -in $(CONFIG_MODULE_SIG_KEY) -text) + +$(if $(findstring rsaEncryption,$(X509TEXT)),,$(shell rm -f $(CONFIG_MODULE_SIG_KEY))) +endif + $(obj)/signing_key.pem: $(obj)/x509.genkey @$(kecho) "###" @$(kecho) "### Now generating an X.509 key pair to be used for signing modules."