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Wed, 25 Feb 2026 14:25:43 +0000 (GMT) Message-ID: Date: Wed, 25 Feb 2026 09:25:43 -0500 Precedence: bulk X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: IMA and PQC To: Coiby Xu , =?UTF-8?Q?Johannes_Wiesb=C3=B6ck?= Cc: dhowells@redhat.com, dmitry.kasatkin@gmail.com, ebiggers@kernel.org, eric.snowberg@oracle.com, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org, roberto.sassu@huawei.com, simo@redhat.com, zohar@linux.ibm.com, michael.weiss@aisec.fraunhofer.de References: <20260130203126.662082-1-johannes.wiesboeck@aisec.fraunhofer.de> Content-Language: en-US From: Stefan Berger In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjI1MDEzNSBTYWx0ZWRfX3qP5/QR4NiU0 GOqGnNq7OdR6+Ew1H+Du8EZdvcu3XXvpqnjEgNAZOC5+zqjVH1bB6TOMKI753jx9CE4m7sbsGMJ JCiR9f2di7zqlSf1n1bNe0JyN6R0y7SQM4fu6Jz/q3fBMhxh5MqMVIPeMXLF5tNc+INOrewy31B IcvAZ8sK+vkSS8VYWhMBuLb4VpEQhWQ+TEiu/9GKn5JjBincwgzgDCk3a1ir09xfmGqTL/Q6OIo 3YFKUEckgUnAFInxMCm/8Xt/+23R0ZmVXrut7aldZnp4u3tlNRJR0kyz54WSNCQhnE2XTJ3uDUt ei0IzhDuYrxEjdLXe2gpIsv64EGlWXZNuAtdfvJlPF9ks2bY1zhu/eTqDSq6eAhxhVK+iS6KCDW PSR+3/7xvNNs5cNDRCCtBX0XxBllt0uXCLoCQSHmHEbj34VVi8qCuxWcZfDsyx6vGnSHty2wsTo FwLd8a+eDi/0WjgiUjA== X-Proofpoint-GUID: NgaRPDtkcA5qlnwKN1z91muvBPFRyMN8 X-Authority-Analysis: v=2.4 cv=S4HUAYsP c=1 sm=1 tr=0 ts=699f066a cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=20KFwNOVAAAA:8 a=8AN272uGgGVaRbb4kAAA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: a5T0_K3QU7mjD237BGpEkprt9BYz8mkj X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-25_01,2026-02-25_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 clxscore=1011 impostorscore=0 malwarescore=0 bulkscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602250135 On 2/3/26 8:32 AM, Coiby Xu wrote: > On Fri, Jan 30, 2026 at 09:31:26PM +0100, Johannes Wiesböck wrote: >> Hi all, > > Hi Johannes, > >> >> we conducted an evaluation regarding PQC use in IMA last year (see [1] >> for all >> details) where we also considered the interplay of different PQC >> signatures and >> file systems (ext4, btrfs, XFS, f2fs). > > Thanks for sharing this comprehensive study! There are many nuances in > this research paper! > >> >> Coiby Xu wrote: >> >>> According to my experiments done so far, for verification speed, >>> ML-DSA-65 is consistently faster than ECDSA P-384 which is used by >>> current CentOS/RHEL to sign files in a package. >> >> Regarding performance, similar to Coiby, we found that all variants of >> ML-DSA >> consistently outperformed ECDSA P-256. > > Glad to know ML-DSA is also faster than ECDSA P-256! To avoid duplicate work: Is either one of you planning on writing patches for IMA to use ML-DSA and convert the current ML-DSA to also support HashML? I had done the work on this before and could dig out the patches again... Stefan