Hi Mathias,
Currently MC supports extension 7z but on GUI we only pack files with 7z file at basic level, I meant we does not support enter password and select encryption mode in GUI of "Pack Files"...
I hope next version MC allow user add password and select encryption mode in GUI. I know these features are not difficult with you, they only take more your times.
Note: Although MC already support function "PackFile" to pack all files in folder or selected folder but I cannot pack some files and folders in current tab.
Thanks,
Aries