lers

An async, user-friendly Let's Encrypt/ACMEv2 library written in Rust.

The API and implementation were inspired by acme2, acme-micro, and lego.

Features

ACME v2 (RFC 8555)
Register with CA
Obtain certificates
Renew certificates
Revoke certificates
Robust implementation of ACME challenges
- HTTP (http-01)
- DNS (dns-01)
- TLS (tls-alpn-01)
SAN certificate support
Custom challenge solvers (Solver trait)
External account bindings

Missing features

Certificate bundling

Contributions are welcome for any of the above features.

Supported DNS-01 Providers

Currently, the following providers are supported:

Cloudflare: CloudflareDns01Solver