I'm currently trying to integrate unity Cloud Build with my Plastic SCM repo, but I don't know which encryption key is correct for the Access Instructions. I know there are two, one client side key in User/AppData/Local/Plastic4/ and a server side key in Program Files/PlasticSCM/server, but which one should I put for the Encryption Key section. And should I just put the key number and letter section or include the .key tag at the end as well?