How the Internet Works 3 December 2015

Let’s Encrypt Today

By Kevin MeynellGuest AuthorNominee for the Internet Society Board of Trustees

letsencryptLet’s Encrypt enters public beta today, which means anyone can now sign-up for free digital certificates. Let’s Encrypt is a new trusted Certificate Authority (CA) that aims to bring down the costs of configuring secure servers in order to increase overall deployment of TLS.

This initiative offers more than just free certificates though, as it also supports automation to make the business of obtaining and managing certificates significantly less complex, whilst encouraging more frequent (90 day) renewal to limit damage from key compromise and mis-issuance. This is achieved through the Automated Certificate Management Environment (ACME) which offers a standards-based REST API allowing the agent software to authenticate that a server controls a domain, request a certificate, and then install it on a server without human intervention.

Over 26,000 certificates were issued during the closed beta trial, so the system has already been extensively tested in the wild. The CA is supported by fourteen sponsoring organisations with an interest in promoting encryption as the norm.

For more information on TLS, please do look at our Start Here page to understand how you can get started transitioning your networks, devices and applications!

Disclaimer: Viewpoints expressed in this post are those of the author and may or may not reflect official Internet Society positions.

Related Posts

About Internet Society 5 November 2025

2025 Postel Awardee David Clark, an Architect and Implementer of the Internet

We are proud to announce David Clark as the winner of the 2025 Jonathan B. Postel Service Award! This...

Internet Policy 5 September 2025

Your Internet Access Is at Risk. We’re Speaking Up

The US Supreme Court will soon consider a case that could fundamentally change how you access the Internet and...

Technology 8 August 2025

The Internet of Wonder: How a Scientific Livestream Became a Cultural Phenomenon

A scientific expedition in Argentina is becoming a cultural phenomenon thanks to the Internet, pulling in thousands of livestream...