dehydrated Dehydrated is a client for signing certificates with an ACME-server (e.g. Let's Encrypt) implemented as a relatively simple (zsh-compatible) bash-script. This client supports both ACME v1 and the new ACME v2 including support for wildcard certificates! It uses the openssl utility for everything related to actually handling keys and certificates, so you need to have that installed. Other dependencies are: cURL, sed, grep, awk, mktemp (all found pre-installed on almost any system, cURL ...