Let’s Encrypt
►https://letsencrypt.org
►https://letsencrypt.org/howitworks/technology
Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (#ISRG). ISRG is a California public benefit corporation, and is recognized by the IRS as a tax-exempt organization under Section 501(c)(3) of the Internal Revenue Code.
The objective of Let’s Encrypt and the ACME protocol is to make it possible to set up an #HTTPS server and have it automatically obtain a browser-trusted #certificate, without any human intervention. This is accomplished by running a certificate management agent on the web server.