Email is still optional, by the same mechanism, but removing the suggestion to leave it out we will greatly increase the percentage of users that supply one, which in turn will reduce customer support requests.
About the Let's Encrypt Client
In short: getting and installing SSL/TLS certificates made easy (watch demo video).
The Let's Encrypt Client is a tool to automatically receive and install X.509 certificates to enable TLS on servers. The client will interoperate with the Let's Encrypt CA which will be issuing browser-trusted certificates for free beginning the summer of 2015.
It's all automated:
- The tool will prove domain control to the CA and submit a CSR (Certificate Signing Request).
- If domain control has been proven, a certificate will get issued and the tool will automatically install it.
All you need to do is:
user@www:~$ sudo letsencrypt -d www.example.org auth
and if you have a compatible web server (Apache or Nginx), Let's Encrypt can not only get a new certificate, but also deploy it and configure your server automatically!:
user@www:~$ sudo letsencrypt -d www.example.org run
Encrypt ALL the things!
Disclaimer
This is a DEVELOPER PREVIEW intended for developers and testers only.
DO NOT RUN THIS CODE ON A PRODUCTION SERVER. IT WILL INSTALL CERTIFICATES SIGNED BY A TEST CA, AND WILL CAUSE CERT WARNINGS FOR USERS.
Current Features
- web servers supported:
- apache/2.x (tested and working on Ubuntu Linux)
- nginx/0.8.48+ (tested and mostly working on Ubuntu Linux)
- standalone (runs its own webserver to prove you control the domain)
- the private key is generated locally on your system
- can talk to the Let's Encrypt (demo) CA or optionally to other ACME compliant services
- can get domain-validated (DV) certificates
- can revoke certificates
- adjustable RSA key bitlength (2048 (default), 4096, ...)
- optionally can install a http->https redirect, so your site effectively runs https only (Apache only)
- fully automated
- configuration changes are logged and can be reverted using the CLI
- text and ncurses UI
- Free and Open Source Software, made with Python.
Links
Documentation: https://letsencrypt.readthedocs.org/
Software project: https://github.com/letsencrypt/lets-encrypt-preview
Notes for developers: CONTRIBUTING.md
Main Website: https://letsencrypt.org/
IRC Channel: #letsencrypt on Freenode
Mailing list: client-dev (to subscribe without a Google account, send an email to client-dev+subscribe@letsencrypt.org)