On 18 Apr 2024, at 13:13, Demi Marie Obenour <demioben...@gmail.com> wrote:

properly implements mitigations.  Time protection is a principled solution
to side-channel attacks, but it requires that the time consumed by operations
on sensitive data is not observable.

This is actually not a correct summary of time protection (TP). In contrast, TP 
*ensures* that kernel operations are constant time, and that userspace 
operations do not produce observable timing variations across security domains.

Having said that, TP isn’t in the mainline kernel and is still experimental. 
We’re planning to restart that project mid-year.

Gernot
_______________________________________________
Devel mailing list -- devel@sel4.systems
To unsubscribe send an email to devel-leave@sel4.systems

Reply via email to