From patchwork Mon Nov 29 17:00:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mimi Zohar X-Patchwork-Id: 12645345 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 DC4E2C433F5 for ; Mon, 29 Nov 2021 17:03:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347353AbhK2RGn (ORCPT ); Mon, 29 Nov 2021 12:06:43 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:61368 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346245AbhK2REn (ORCPT ); Mon, 29 Nov 2021 12:04:43 -0500 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1ATFkcHL004585; Mon, 29 Nov 2021 17:01:24 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : content-transfer-encoding : mime-version; s=pp1; bh=tyJn1dJDKOISYr6ZBfAQkOJsshvSUxtJqeXTCrXzPaQ=; b=djYJS2prL6tqi/AWoA9X3CWmj4j+SNJYduPxpWdiUVaxHxL07Ku2a+Qe9m5kUk8FtW1K 7PWw0YU0xMdSFhzGYQ76ptNt7ZGnE4UxbBjKfShINeV/QNAjhD6N3tBVENP2ROTg3LZZ Zv8RfG/G2RBNNwdddFArA34RmPP6wpC1ayWxRYatLQitE/YR4r5Y6QiEUIvrOmjnoWVN MflHwENtYcxqjbaGX2QFcZ7SBDbyMPbumsSqU0XhPb3xmAYjDDtLvc9X8l4P/CmfsI19 Y2rNw6HB2Aug/A6LfweqMFRIa3wU0hStQ0ZYQMn2RdTMo9EFuegWcFcpjP2xiyxdgR/r Sg== Received: from ppma06fra.de.ibm.com (48.49.7a9f.ip4.static.sl-reverse.com [159.122.73.72]) by mx0a-001b2d01.pphosted.com with ESMTP id 3cn1t71yrv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Nov 2021 17:01:23 +0000 Received: from pps.filterd (ppma06fra.de.ibm.com [127.0.0.1]) by ppma06fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1ATGuj1x006995; Mon, 29 Nov 2021 17:01:21 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma06fra.de.ibm.com with ESMTP id 3ckbxje6uj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Nov 2021 17:01:21 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1ATH1Ivp19661196 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Nov 2021 17:01:18 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BA7F44C063; Mon, 29 Nov 2021 17:01:18 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A542A4C044; Mon, 29 Nov 2021 17:01:17 +0000 (GMT) Received: from li-f45666cc-3089-11b2-a85c-c57d1a57929f.ibm.com.com (unknown [9.65.68.145]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 29 Nov 2021 17:01:17 +0000 (GMT) From: Mimi Zohar To: linux-integrity@vger.kernel.org Cc: linux-fscrypt@vger.kernel.org, linux-kernel@vger.kernel.org, Mimi Zohar , Eric Biggers Subject: [PATCH 0/4] ima: support fs-verity signatures stored as Date: Mon, 29 Nov 2021 12:00:53 -0500 Message-Id: <20211129170057.243127-1-zohar@linux.ibm.com> X-Mailer: git-send-email 2.27.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: lut-SrzVKLJ-JpDWmXzwhdr9vCKQgf5G X-Proofpoint-ORIG-GUID: lut-SrzVKLJ-JpDWmXzwhdr9vCKQgf5G X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.0.607.475 definitions=2021-11-29_10,2021-11-28_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 spamscore=0 priorityscore=1501 phishscore=0 clxscore=1011 mlxscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111290081 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org Support for fs-verity file digests in IMA was discussed from the beginning, prior to fs-verity being upstreamed[1,2]. This patch set adds signature verification support based on the fs-verity file digest. Both the file digest and the signature must be included in the IMA measurement list in order to disambiguate the type of file digest. [1] https://events19.linuxfoundation.org/wp-content/uploads/2017/11/fs-verify_Mike-Halcrow_Eric-Biggers.pdf [2] Documentation/filesystems/fsverity.rst Mimi Zohar (4): fs-verity: define a function to return the integrity protected file digest ima: define a new signature type named IMA_VERITY_DIGSIG ima: limit including fs-verity's file digest in measurement list ima: support fs-verity file digest based signatures fs/verity/fsverity_private.h | 6 --- fs/verity/measure.c | 49 +++++++++++++++++++++++ include/linux/fsverity.h | 17 ++++++++ security/integrity/ima/ima.h | 3 +- security/integrity/ima/ima_api.c | 23 ++++++++++- security/integrity/ima/ima_appraise.c | 9 ++++- security/integrity/ima/ima_main.c | 7 +++- security/integrity/ima/ima_template_lib.c | 3 +- security/integrity/integrity.h | 1 + 9 files changed, 107 insertions(+), 11 deletions(-)