generate key, then explain files

ssh/index.md

@@ -3,3 +3,15 @@ Secure Shell is the defacto tool for connecting between devices security in IOT
 
 - [Gitea ssh Setup](gitea-ssh-setup.md)
 
+# Generating a key
+After installing ssh, we recommend generating an ECDSA (elliptic crypto key)
+	ssh-keygen -t ECDSA
+This will ask for a password to encrypt the private key.
+**It is very very important that you save this password somewhere safe but easy to retrieve.  If you lose it, you will have to generate a new key pair**
+
+	
+This will put the public and private key in your `.ssh` folder
+     id_ed25519      # your private key, password protected
+	 id_ed25519.pub  # your public key
+
+