| Abstract: Detection and deterrence of device tampering and subversion by
substitution may be achieved by including a cryptographic unit within a
computing device for binding multiple hardware devices and mutually
authenticating the devices. The cryptographic unit includes a physically
unclonable function ("PUF") circuit disposed in or on the hardware
device, which generates a binding PUF value. The cryptographic unit uses
the binding PUF value during an enrollment phase and subsequent
authentication phases. During a subsequent authentication phase, the
cryptographic unit uses the binding PUF values of the multiple hardware
devices to generate a challenge to send to the other device, and to
verify a challenge received from the other device to mutually
authenticate the hardware devices. |
| Filed: 10/20/2010 |
| Application Number: 12/908131 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Attribution for Derwent World Patents Index Records published on Sandia ® Clarivate. All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |