Cannot use SSH keys in Fuse mount, any way to specify fuse mount permissions?

I keep my SSH keys in Cryptomator, but now that I’ve upgraded to 1.40 and switched to Fuse mount I’m getting the following error:

Permissions 0644 for ‘some_key’ are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.

Looking at files in the mounted volume in ~/Library/Application Support/Cryptomator/VaultName2348fasf/
They are all group+world readable. Can I specify mounting to be ug-rw and only u+rw ?

Or is there another workaround to allow SSH keys within the cryptomator volume to work?

Thank you.


Read-only mounts are already requested as a feature and someone started implementing something, but its far from done.

Regarding the permissions of a file (or change it via chmod), there were already some posts mentioning that it does not work as expected. (see here File permissions under Linux)