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. 03, 2015
Filed:
Oct. 10, 2006
Adrian Perrig, Pittsburgh, PA (US);
Pradeep Khosla, Pittsburgh, PA (US);
Arvind Seshadri, Pittsburgh, PA (US);
Mark Luk, Fremont, CA (US);
Leendert Van Doorn, Valhalla, NY (US);
Adrian Perrig, Pittsburgh, PA (US);
Pradeep Khosla, Pittsburgh, PA (US);
Arvind Seshadri, Pittsburgh, PA (US);
Mark Luk, Fremont, CA (US);
Leendert van Doorn, Valhalla, NY (US);
Carnegie Mellon University, Pittsburg, PA (US);
Abstract
A method, system, and apparatus for verifying integrity and execution state of an untrusted computer. In one embodiment, the method includes placing a verification function in memory on the untrusted computer; invoking the verification function from a trusted computer; determining a checksum value over memory containing both the verification function and the execution state of a processor and hardware on the untrusted computer; sending the checksum value to the trusted computer; determining at the trusted computer whether the checksum value is correct; and determining at the trusted computer whether the checksum value is received within an expected time period.