To what level does Tor support certificate pinning (aka HPKP, key pinning)?
It is my understanding that HPKP
is implemented as a cookie can be used as a "super cookie" and thus it would be cleared across restarts. The documentation on this is less clear on this and a test website claims it's not working at all.
Answers should include whether the cookie survives across restarts. Bonus points for insight on whether it will be supported in the future.