Skip to main content
Pre-release

This release is a pre-release and may not be stable for production use.

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.

Browser-trusted certificates will be available in the coming months.

For more information regarding the status of the project, please see https://letsencrypt.org. Be sure to checkout the Frequently Asked Questions (FAQ).

About the Let’s Encrypt Client

Travis CI status Coverage status Documentation status Docker Repository on Quay.io

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.

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 to sign a single domain is:

user@www:~$ sudo letsencrypt -d www.example.org auth

For multiple domains (SAN) use:

user@www:~$ sudo letsencrypt -d www.example.org -d 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!

Current Features

  • Supports multiple web servers:

    • apache/2.x (tested and working on Ubuntu Linux)

    • nginx/0.8.48+ (under development)

    • standalone (runs its own simple webserver to prove you control a 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 bit-length (2048 (default), 4096, …).

  • Can optionally install a http -> https redirect, so your site effectively runs https only (Apache only)

  • Fully automated.

  • Configuration changes are logged and can be reverted.

  • Text and ncurses UI.

  • Free and Open Source Software, made with Python.

Installation Instructions

Official documentation, including installation instructions, is available at https://letsencrypt.readthedocs.org.

Release files for letsencrypt 0.0.0.dev20151030

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for letsencrypt 0.0.0.dev20151030
File Size Uploaded
letsencrypt-0.0.0.dev20151030.tar.gz 151.2 kB Details

Built distribution (wheel)

Table of built distributions (wheels) for letsencrypt 0.0.0.dev20151030
File Interpreter ABI Platform
letsencrypt-0.0.0.dev20151030-py2-none-any.whl Python 2 none any Details

Total release size: 314.4 kB

Release files / letsencrypt-0.0.0.dev20151030.tar.gz

Download URL letsencrypt-0.0.0.dev20151030.tar.gz
Size 151.2 kB
Tags Source
SHA-256 checksum
How to use checksums
e309056485b3b0238ad88a12209e928649f4a4c76228700163d34657a46e3ed9
BLAKE2b-256 checksum
How to use checksums
87490a8bce6adbe782fe4150c377658a15651f9155920a44ac24ac87eace36de
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
No

Release files / letsencrypt-0.0.0.dev20151030-py2-none-any.whl

Download URL letsencrypt-0.0.0.dev20151030-py2-none-any.whl
Size 163.2 kB
Tags Python 2
SHA-256 checksum
How to use checksums
373b21a064f8426e2e8a0b19d1981c8bed9e7024366dd0c602b952fbe0f711e5
BLAKE2b-256 checksum
How to use checksums
67a3aa3932fd93470689a0f5350f10c7e6d0ac5b0c6362b7f16308df07a264e9
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
No
Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page