Propagating Native User passwords across a cluster and SHA-256

In the operations manual--8.4.3. Propagate users and roles--I see that user passwords are stored in SHA-256 encrypted format. Of course they are stored locally, since that encryption is server instance specific. But among the choices for propegating user information across the cluster is to use a shared network folder. That would put the SHA-256 password string outside the server and it would be picked up by other servers that are unable to decrypt SHA-256 strings generated by another server. Is there a trick to make this work?