On 9/14/22 03:51, Vitaly Zaitsev via devel wrote:
On 13/09/2022 23:50, Demi Marie Obenour wrote:
> Another option is a TPM-based authenticator. Would this be acceptable?
No. TPM 2.0 chip is a *proprietary* black box. Some of them have known
critical security vulnerabilities[1].
OK, but so is every onther secure processor (yubikeys, finians, etc). At
least TPM2 is ubiquitous, and watched/tested widely, and being improved
as a result. The vulnerability you refer to was due to not encrypting
LPC traffic between the motherboard and the TPM chip, which was
apparently due to the implementation being lazy rather than a TPM
deficiency. Traffic encryption is a standard protocol feature, and is
increasingly being used.