I am trying to copy an EFS Encrypted zip file from Windows to a Linux server (through OpenSSH scp). It was encrypted using the PowerShell .Encrypt() method. Unfortunately, for whatever reason, when I download the file from the Linux server to a Windows machine, it can't be opened because the Windows machine does not detect it's EFS encrypted, and just regards it as an unreadable zip file.
I have exported the EFS key from the first computer and installed it on the computer that opens the file. The file is successfully detected as an EFS encrypted file when I use a USB key to move the file around and can be opened properly.
The PowerShell script that I'm trying to create should be invisible to the user. Another question is: could creating and mounting a VHDX file still be part of a script that doesn't interrupt the normal workflow of the user?