I’ve searched in others topic and the FAQ, but I didn’t find any anser to my question: is it secure to store the masterkey.cryptomator file into a vault hosted in a cloud service? Or maybe only the d/* data should be transfered, and to masterkey.cryptomator stored in other way, so it’s not be used?
See here: Why is the masterkey stored in the cloud?
In short. Yes it is safe. You need the password and the masterkey file to open the vault. You cannot decrypt any file only with masterkey file.
The masterkey file has to be available next to the d folder. If you move it to an other path, you won’t be able to open your vault anymore.
Ok, noted. I’ll backup the key with the d/ directory