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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2f88885b820sm16887442eec.20.2026.05.12.02.52.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 May 2026 02:52:06 -0700 (PDT) From: Linlin Zhang To: Mikulas Patocka Cc: Alasdair Kergon , Mike Snitzer , Benjamin Marzinski , dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v1 0/1] dm-inlinecrypt: move to HW-wrapped key Date: Tue, 12 May 2026 02:52:02 -0700 Message-Id: <20260512095203.3688708-1-linlin.zhang@oss.qualcomm.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=ZrTd7d7G c=1 sm=1 tr=0 ts=6a02f848 cx=c_pps a=Uww141gWH0fZj/3QKPojxA==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=VwQbUJbxAAAA:8 a=TSe6Oj_gPFDMQzTpqJsA:9 a=PxkB5W3o20Ba91AHUih5:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTEyMDA5OSBTYWx0ZWRfX6GmnTThqG3rO v6OKpKvlEq5326gL1hFYp7TSfaF2A4CtSHmMgDmq2XYlAKrRgKAXnz8FfmQcPwx0vAK6IbMh2xS DaeLGV6SJ7zSnuJyE/p72ObwzgjHgj4ai3il4GVSOrJhFKHWpOIX26fVf3qUig5LQXYM6VDZWJo A2QnptSZblwIDn0+EhCSodBNDMMghClqSTC77J1ItS2Zzih4wvU/HmJ3vRkFtyZtpSb0pWLNKRd I+T4LJlGE3ps7WhT5dDxHysV0YaZLaRDMXPL48J3VhaDxDdeFl5jt7cGr6AswC47oS/fv+vQlTL Ck6kgZAUR07Jr1xWoK1c1/5xhD/GFrY82SxB5uNMfj3w6Xhotp37FayO79cvU4D52bG6FV2u0De XY5T/79KI1Tq/BZNGNylAItnyV36/lL6HYzHw1NrjIKbYqOMNvcfnJkSIrW5jxZdr+B6kYwlMCV UxT6zv4/b0Ho2qHvamQ== X-Proofpoint-ORIG-GUID: QTSByWAKdvYfH6xHRBPNowZ0na-CeHeU X-Proofpoint-GUID: QTSByWAKdvYfH6xHRBPNowZ0na-CeHeU X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-11_05,2026-05-08_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 malwarescore=0 spamscore=0 suspectscore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 bulkscore=0 adultscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605050000 definitions=main-2605120099 dm-inlinecrypt currently initializes the blk-crypto key using BLK_CRYPTO_KEY_TYPE_RAW, which implies that the provided key material is a plaintext software key owned by the block layer. This was requested as the first version in the link (https://lore.kernel.org/all/20260312070110.GD2359@sol/) to have a a easy way validating the patch. However, now support for wrapped keys is already upstream and on platforms where dm-inlinecrypt is used together with a hardware-backed key source (e.g. TrustZone/TEE or other secure key wrapping mechanisms), the key material passed down is already wrapped and must be treated as opaque by the block layer. Switching the blk-crypto key initialization to BLK_CRYPTO_KEY_TYPE_HW_WRAPPED aligns dm-inlinecrypt with hardware-backed key usage models and avoids incorrect assumptions about key ownership and visibility. Linlin Zhang (1): dm-inlinecrypt: initialize blk-crypto key as HW-wrapped key drivers/md/dm-inlinecrypt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.34.1