Step1 :
Convert SSL certificate to PEM format from pfx;
openssl pkcs12 -in orginal.pfx -out cle.pem -nodes
Step2:
update /opt/etherpad/etherpad140/etherpad-lite/setting.json
“ssl” : {
“key” : “/opt/etherpad/etherpad140/ssl/cle.pem”,
“cert” : “/opt/etherpad/etherpad140/ssl/cle.pem”,
“passphrase” : “xxourpfxpasswordxx“,
},
Credits : Shaju.