| 16 Jul 2021 |
@grahamc:nixos.org | oh wowo | 19:00:37 |
@grahamc:nixos.org | nice | 19:00:54 |
andi- | There you go :P | 19:01:07 |
@grahamc:nixos.org | page 67 TPM_PT_LOCKOUT_RECOVERY https://trustedcomputinggroup.org/wp-content/uploads/TPM-Rev-2.0-Part-2-Structures-01.38.pdf | 19:23:51 |
@grahamc:nixos.org | not pointing anything out there just a primary source for the meaning of these values | 19:26:30 |
| @grahamc:nixos.org removed the room topic "Exploring TPMs on NixOS". | 19:31:12 |
@grahamc:nixos.org | andi-: should I change the main address to be #tpm:nixos.org? | 19:37:09 |
andi- | Sure | 19:37:56 |
@grahamc:nixos.org | I'm a little confused, failedTries hasn't decremented despite recoveryTime elapsing several times | 19:42:47 |
@grahamc:nixos.org | so, seeing this happen I decided to look at the spec | 19:45:54 |
@grahamc:nixos.org |
failedTries(NV) –This counter is incremented when the TPM returns TPM_RC_AUTH_FAIL. TPM2_Clear() will reset this counter to zero. This counter is also set to zero on a successful invocation of TPM2_DictionaryAttackLockReset(). This counter is decremented by one after recoveryTimeseconds if:the TPM does not record an authorization failure of a DA-protected entity,there is no power interruption, andfailedTriesis not zero
| 19:46:14 |
@grahamc:nixos.org | I think I have errata lol | 19:47:56 |
@grahamc:nixos.org | andi-: do you have a handy tpm simulator's source link? | 19:51:04 |
andi- | One sec I read that earlier somewhere. If you use libvirt that is supposed to just work but with QEMU you have to launch a daemon.. | 19:51:37 |
andi- | https://documentation.suse.com/sles/15-SP3/html/SLES-all/tpm.html | 19:52:04 |
@grahamc:nixos.org | hm | 19:58:23 |
@grahamc:nixos.org | annoying | 20:01:01 |