: The file must be named exactly aes_keys.txt (lowercase, except for the file extension).
Open Citra and go to Emulation > Configure... . citra aes keystxt top
Restart Citra. If the keys are correct, encrypted .cia or .3ds files should now load. : The file must be named exactly aes_keys
If you dump your 3DS cartridges using a compatible tool (like GodMode9 on a hacked 3DS), you can choose to during the dump process. The resulting .cci or .3ds file will run on Citra without any keys needed . citra aes keystxt top