acme-nano

acme-nano is a tool for generating HTTPS certificates that are signed by the Let's Encrypt Certificate Authority. acme-nano is less than 600 lines of code and has no external dependencies, making it easy to audit.

Getting started

One-time setup

1. Install acme-nano (requires Go version 1.5+):

    $ go get github.com/davidlazar/acme-nano
   

2. Register an account:

    $ acme-nano register -account acme.key -email admin@example.com
   

3. Authorize account to manage your domain:

    $ sudo acme-nano authorize -account acme.key -domain example.com
   

Type acme-nano authorize -h for instructions on how to run the authorize command without root.

Generate certificates

$ acme-nano cert -account acme.key -domain example.com -chain

You'll probably want to run the cert command in a monthly cronjob.