Methods For Data-Smuggling

• US 20100023718A1
• Filed: 06/30/2007
• Published: 01/28/2010
• Est. Priority Date: 05/03/2007
• Status: Active Grant

• Current Assignee: Jpmorgan Chase Bank NA As The Agent
• Original Assignee: SanDisk IL Ltd. (Western Digital Corporation)
• Inventors: Mosek, Amir
• Granted Patent: US 7,822,935 B2
• Time in Patent Office: Days
• US Class Current: 711/163
• CPC Class Codes: G06F 12/1441 for a range

Abstract

The present invention discloses methods for an application, running on a host system, to access a restricted area of a storage device, the method including the steps of: providing a file system for running on the host system; restricting access, by the file system, to the restricted area; sending an indication, from the application to the storage device, that data being sent by the application to the storage device via the file system is intended for the restricted area; detecting the indication in the storage device; and making the data, residing in the restricted area, available for reading by the application upon receiving an application request. Preferably, the method further includes the step of: releasing wasted areas, of the storage device, for use by the file system. Preferably, the method further includes the step of: copying non-restricted data from a non-restricted area into the restricted area.

Claims

1. A method for an application, running on a host system, to access a restricted portion of a storage device, the storage device also including a non-restricted portion, the method comprising the steps of:

(a) providing a file system for running on the host system;

(b) permitting access to the storage device, by said file system, via only the restricted portion;

(c) sending an indication, from the application to the storage device, that data being sent by the application to the storage device via said file system is intended for the restricted portion;

(d) detecting said indication in the storage device; and

(e) in accordance with said indication, storing said data in the storage device in a manner that involves addressing both the restricted portion and the non-restricted portion.

2. The method of claim 1, the method further comprising the step of:

(f) releasing wasted areas, of the storage device, for use by said file system.

3. The method of claim 1 wherein said storing of said data includes copying said data from the non-restricted portion into the restricted portion.

4. The method of claim 1, wherein said data are stored in the non-restricted portion the method further comprising the step of:

(f) routing host-system access-requests, intended for the restricted portion, to at least one address of said data in the non-restricted portion.

5. The method of claim 1, the method further comprising the step of:

(f) interpreting host-system access-requests, intended for the non-restricted portion, as restricted access-requests to the restricted portion.

6. The method of claim 1, wherein said data are stored in the restricted portion, the method further comprising the step of:

(f) making said data, residing in the restricted portion, available for reading by the application upon receiving an application request.