Apache Guacamole SSH Key Generation
Apache Guacamole is a RDP/VNC/SSH Client for your web browser.
SSH keys created by ssh-keygen contains an unsupported header:-----BEGIN OPENSSH PRIVATE KEY-----
The existing discussions on the web don't show how to add a passphrase to the key generated with openssl so this is how you do it:
KEYFILE=~/.ssh/id_guacamole
PASSWORD=<SSH KEY PASSWORD>
openssl genrsa -passout pass:${PASSWORD} -out ${KEYFILE} 4096
ssh-keygen -y -f ${KEYFILE} > ${KEYFILE}.pub