illdefined / lego

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

Automatic Certificates and HTTPS for everyone.

Lego

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

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	all-inkl	Amazon Lightsail
Amazon Route 53	ArvanCloud	Aurora DNS	Autodns
Azure	Bindman	Bluecat	Checkdomain
Civo	CloudDNS	Cloudflare	ClouDNS
CloudXNS	ConoHa	Constellix	deSEC.io
Designate DNSaaS for Openstack	Digital Ocean	DNS Made Easy	DNSimple
DNSPod (deprecated)	Domain Offensive (do.de)	Domeneshop	DreamHost
Duck DNS	Dyn	Dynu	EasyDNS
Epik	Exoscale	External program	freemyip.com
G-Core Labs	Gandi Live DNS (v5)	Gandi	Glesys
Go Daddy	Google Cloud	Hetzner	Hosting.de
Hosttech	HTTP request	Hurricane Electric DNS	HyperOne
IBM Cloud (SoftLayer)	IIJ DNS Platform Service	Infoblox	Infomaniak
Internet Initiative Japan	Internet.bs	INWX	Ionos
iwantmyname	Joker	Joohoi's ACME-DNS	Linode (v4)
Liquid Web	Loopia	LuaDNS	Manual
MyDNS.jp	MythicBeasts	Name.com	Namecheap
Namesilo	NearlyFreeSpeech.NET	Netcup	Netlify
Nicmanager	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
Tencent Cloud DNS	TransIP	UKFast SafeDNS	Variomedia
VegaDNS	Vercel	Versio.[nl/eu/uk]	VinylDNS
VK Cloud	Vscale	Vultr	WEDOS
Yandex Cloud	Yandex PDD	Zone.ee	Zonomi

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