- compiled from multiple sources and much trial and error, please feel free to use and pass on
-- please note this is not exhaustive, it's meant only as a guide
- please see
  https://www.industrialcuriosity.com/2016/10/without-or-without-certificates-an-idiots-guide-to-end-to-end-web-encryption/
  for a full explanation. please feel free to comment, question and criticize there!