If the encryption key programming file and the encrypted configuration file are generated in different versions of the Quartus II software, will the design security feature still function?

Description

Yes, if the encryption key programming (.ekp) file and the encrypted configuration file are generated in different versions of the Quartus® II software, the design security feature will still function correctly as long as the encrypted configuration files are generated with the same key. A device programmed with that key will configure successfully with the encrypted configuration file, regardless of the Quartus II software used to generate these files.