On Tue, 6 Apr 2021 17:41:59 +0000 Phil Leblanc <philanc@gmail.com> wrote: > Do you know how supported it is in common TLS libraries? Wikipedia has a comparison of the capabilities of popular SSL/TLS libraries[0]. Apparently, right now only GnuTLS is known to support Raw Public Keys [0]: https://en.wikipedia.org/wiki/Comparison_of_TLS_implementations#Extensions ~almaember