According to Patently Apple, there is a possibility that Mac OS 10.7 Lion will ship with a cloud-based "FileVault," which allow encrypted file storage on Apple's servers.
Apple's patent is about a safe deposit box for securing important user files. In one aspect, when a user drags-and-drops a file representation onto a safe deposit box icon, the file is secured. In another aspect, when a user selects the safe deposit box icon and verifies his or her identity, the user could access secured files through a safe deposit box window.
The aim of the cloud-based feature would be to protect users files when they're uploaded to the cloud; the article states that it would be similar to a real life safe deposit box.
The idea seems to be that a new icon will be placed on either the dock or the desktop and allow a user to drag and drop a file onto it. Doing so will upload the file to the Apple servers where it will be encrypted and available for you to use, once you login with your user name and password.
Patently Apple mentions that a user will be automatically logged out after a short period of time, to lessen the chance of unauthorized users being able to view your files.
In Apple's patent FIG. 4 illustrated below we see an example system 400 showing a user computer coupled to various storage devices. Cutting to the chase, Apple's patent states that "the user computer is also optionally coupled to one or more remote storage devices 412 through a network 414 (e.g., the Internet). The remote storage devices could be, for example, other computers such as a server bank or cloud storage."
[tags]filevault,safe deposit box[/tags]