[systemd-devel] Is tpm2-measure-pcr really an additional security?

2025-03-08 Thread Diorcet Yann
Hello, I'm in the process of using SecureBoot, TPM2.0 and LUKS2 to protect an industrial embedded computer. I have a chain of trust in the UEFI (own secure boot keys/certificates), signed grub2, all files used by grub2 signed including kernel and initramfs,  and successfully automatically un

Re: [systemd-devel] Is tpm2-measure-pcr really an additional security?

2025-03-10 Thread Diorcet Yann
Le 10/03/2025 à 17:27, Adrian Vovk a écrit : Hello, On Mon, Mar 10, 2025, 12:06 Mikko Rapeli wrote: Hi, On Mon, Mar 10, 2025 at 11:16:25AM -0400, Adrian Vovk wrote: > Hello, > > Just to see if I understand your concern correctly, I'll try boiling it > down to its

Re: [systemd-devel] Is tpm2-measure-pcr really an additional security?

2025-03-11 Thread Diorcet Yann
Le 10/03/2025 à 21:42, aplanas a écrit : On 2025-03-10 18:25, Diorcet Yann wrote: Le 10/03/2025 à 17:27, Adrian Vovk a écrit : 2) Just before opening the var LUKS: PCR15=0 or something predictable cryptsetup is used to open var and update PCR15 thanks to tpm2-measure-pcr=yes. but in this