thank you FreeYoda ... you are absolutely spot on.
... implementation of how the credential keys can be controlled in Python is never safe due to memory issues. Rust might be better.
timing, is everything on these small registers.
the following, take a look at slide 11. What the above and many articles on the web/academia isn't telling anyone, is that the flaw is embedded right in the software tools in each and every silicon fab plant. this is why, this problem will not go away.