SSL Keys in v7.01

Installed v7.01 and upgraded from 6.1 only to discover the built in key is 2048 length rsa which is now considered to be insecure by CISA/NSA. Where are the key gen parameters stored so I can update them to a more secure key format when generating user keys. Or how does one install their own keys for OpenEMR? Using Ubuntu 22.04.