This step tells Let's Encrypt that you're serving
the correct data for this challenge on your server.
When Let's Encrypt receives this submission, they
will make a request to your server to verify you are
serving the data correctly.
How to generate this signature:
-
Copy and paste the command below into your terminal (if your
account private key isn't at "./account.key", change "./account.key"
in the command to wherever it exists).
-
Copy and paste the hex encoded signature output from the command
into the text field below that command.