As part of your setup with Lirium, you will be required to generate an asymmetric RSA Private/Public key pair and provide us with the Public Key.
You can achieve that by running the following commands
openssl genrsa -out private.pem 4096
openssl rsa -in private.pem -outform PEM -pubout -out public.pem
Lirium will provide you with an API Key that will be used in the creation of the JSON Web Token for identification when we receive the public key (the contents from public.pem in the example)