Thank you for reply Steve.
I wonder that nobody is interested to have a "both-way" access to files stored on iCloud or whatever cloud storage.
There is also the possibility to create an 128/256 AES encrypted DMG container in macOS but no tool to open this in iOS/ iPadOS.
I understand that Apple is refraining itself to push such features by own initiative especially as the proposed crypto bill has big chances to be approved. The proposed bill is not related to Apple only but to all US cloud providers, with servers everywhere in the world, and is strange that no one wants to have ow access keys.
All those cloud companies promoting to encrypt user files and content will hand over the master keys within a second to authorities as noone wants to go to jail for Average Joe.
"Work has started on version 3 of Disk Decipher. The main focus of the 3.x series will be the iOS Files app integration. Other planned improvements are changes necessary for running Disk Decipher on macOS..."