The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2016
Filed:
Apr. 08, 2011
Tadayoshi Kohno, Seattle, WA (US);
Roxana Geambasu, New York, NY (US);
Henry Levy, Seattle, WA (US);
Steven Gribble, Seattle, WA (US);
Tadayoshi Kohno, Seattle, WA (US);
Roxana Geambasu, New York, NY (US);
Henry Levy, Seattle, WA (US);
Steven Gribble, Seattle, WA (US);
University of Washington through its Center for Commercialization, Seattle, WA (US);
Abstract
Systems and methods for providing an auditing file system for theft-prone devices are disclosed. The auditing file system supports fine-grained file auditing: a user may obtain reliable, explicit evidence that no files have been accessed after a device's loss. A user may also disable future file access after a device's loss, even in the absence of device network connectivity. In one embodiment, files are encrypted locally but the encryption keys are stored remotely, so that an audit server is queried for encryption keys to access protected files. By configuring the audit server to refuse to return a particular file's key, the user can prevent new accesses after the device is lost.