Let’s Encrypt is old news by now. It launched back in December, so it has been giving away free DV certificates for nearly four months now. Being a TA for a Computer Security course, it’s about time that I actually tried it out.
Prologue
Let’s Encrypt is a free certificate authority. They grant TLS certificates that you can use to secure your webserver. They are Domain Validated (DV) certificates, which means they will verify that you control the domain name you are trying to certify.