Re:Internet Draft: Let 'localhost' be localhost
by jaas on Tuesday August 08, 2017 @09:39AM
(#14957674)
Publishing private keys is a violation of the Let's Encrypt terms of service. We are revoking these certificates.
https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016...
Which I find to be a very practical solution for connecting to localhost over https, it frees you from having to install a self-signed certificates/CAs on your machine.