Filevault encryption key on macOS

Hello,

It is possible to encrypt a mac's hard-drive with Filevault.

All home user folders are encrypted with the same encryption key. (This is the same encryption key for the whole hard-drive).

This encryption key is encrypted with user password. But i don't understand how it works when there are multiple user accounts. Maybe there is a table: The same encryption key is stored several times (one per user account) ?

Is there a way for a user to read the filevault encryption key ?

Thanks

Filevault encryption key on macOS
 
 
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