rtribotte / lego

Let's Encrypt client and ACME library written in Go

Let's Encrypt client and ACME library written in Go.

Features

• ACME v2 RFC 8555
• Register with CA
• Obtain certificates, both from scratch or with an existing CSR
• Renew certificates
• Revoke certificates
• Robust implementation of all ACME challenges
  • HTTP (http-01)
  • DNS (dns-01)
  • TLS (tls-alpn-01)
• SAN certificate support
• Comes with multiple optional DNS providers
• Custom challenge solvers
• Certificate bundling
• OCSP helper function

lego introduced support for ACME v2 in v1.0.0. If you still need to utilize ACME v1, you can do so by using the v0.5.0 version.

Installation

How to install.

Usage

• as a CLI
• as a library

Documentation

Documentation is hosted live at https://go-acme.github.io/lego/.

DNS providers

Detailed documentation is available here.

Akamai EdgeDNS	Alibaba Cloud DNS	Amazon Lightsail	Amazon Route 53
ArvanCloud	Aurora DNS	Autodns	Azure
Bindman	Bluecat	Checkdomain	CloudDNS
Cloudflare	ClouDNS	CloudXNS	ConoHa
Constellix	deSEC.io	Designate DNSaaS for Openstack	Digital Ocean
DNS Made Easy	DNSimple	DNSPod	Domain Offensive (do.de)
Domeneshop	DreamHost	Duck DNS	Dyn
Dynu	EasyDNS	Exoscale	External program
Gandi Live DNS (v5)	Gandi	Glesys	Go Daddy
Google Cloud	Hetzner	Hosting.de	HTTP request
Hurricane Electric DNS	HyperOne	Infoblox	Infomaniak
Internet Initiative Japan	Internet.bs	INWX	Ionos
Joker	Joohoi's ACME-DNS	Linode (v4)	Liquid Web
Loopia	LuaDNS	Manual	MyDNS.jp
MythicBeasts	Name.com	Namecheap	Namesilo
Netcup	Netlify	NIFCloud	Njalla
NS1	Open Telekom Cloud	Oracle Cloud	OVH
Porkbun	PowerDNS	Rackspace	reg.ru
RFC2136	RimuHosting	Sakura Cloud	Scaleway
Selectel	Servercow	Simply.com	Sonic
Stackpath	TransIP	VegaDNS	Versio.[nl/eu/uk]
VinylDNS	Vscale	Vultr	WEDOS
Yandex	Zone.ee	Zonomi

If your DNS provider is not supported, please open an issue.