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Hallyn" , "open list:KEYS-TRUSTED" , "open list:SECURITY SUBSYSTEM" , open list , Roberto Sassu In-Reply-To: <20260125192526.782202-2-jarkko@kernel.org> References: <20260125192526.782202-1-jarkko@kernel.org> <20260125192526.782202-2-jarkko@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 20 Feb 2026 13:04:30 -0500 Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Evolution 3.56.2 (3.56.2-2.fc42) X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=E+/AZKdl c=1 sm=1 tr=0 ts=6998a232 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=Vt9hyLhVu_K4TWJpMtYA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjIwMDE1MSBTYWx0ZWRfXx8OzFQ2LjLWn noyCkrBZi+/yVOw7BjW3yQ4kNelwIZRouK4085vYntXfgWVt2Gr+iiuGQGJ95ogwc7y+jf6v4mu OpeezWUjkldDYhGFp6Oi6GEEfmzC9gXc+l6ilDdOrLR4rgGZZCmNvtGgqdJ0+0vjRFgrBIUebjv Qjn1B5dTjmE9tuGCz+EVv0Y2ldXDlB53jgdIIbw5xTjW99dBUAFjzWc6zbopB766D97uJNncVN8 eN3tABYVB2UEzeeKBExmsJTr5H3kvWWuoFxPT2+QhQpCdxdD3sq5tKGyWIf2LHSqiMLDoyMYs9B lyl3wXfMZ9vcXoZUcQHf9rmrqlTdkYH5X9l47ikAuNlzrKjxfGW47ZnHoXOc7JcfOvQcf3IgWGM AQes4WesDKekKWgLc1IB/NLJ+stxohtKGY/zQT8gfoOlLOyXo+oOAqyqAcrk24PPcZdQNcbax/p 23jZCxcidrqjstySwGQ== X-Proofpoint-ORIG-GUID: L34ya8ATJ-eL4atO6jNskeEgII66AEtM X-Proofpoint-GUID: 48YtNvNjc2aDdlz_BKOfk7bS-oocurIF 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=2026-02-20_02,2026-02-20_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 phishscore=0 bulkscore=0 suspectscore=0 spamscore=0 clxscore=1015 impostorscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602200151 [Cc: Chris Fenner, Jonathan McDowell, Roberto] On Sun, 2026-01-25 at 21:25 +0200, Jarkko Sakkinen wrote: > 1. tpm2_get_random() is costly when TCG_TPM2_HMAC is enabled and thus its > use should be pooled rather than directly used. This both reduces > latency and improves its predictability. If the concern is the latency of encrypting the bus session, please remembe= r that: - Not all environments expose the TPM bus to sniffing. - The current TPM trusted keys design is based on TPM RNG, but already allo= ws it to be replaced with the kernel RNG via the "trusted_rng=3Dkernel" boot comm= and line option. - The proposed patch removes that possibility for no reason. Mimi & Elaine