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:
Oct. 16, 2012
Filed:
Jul. 17, 2007
Richard a Erhart, Tempe, AZ (US);
Gregory L. Dean, Phoenix, AZ (US);
Frank Schwab, Phoenix, AZ (US);
Richard A Erhart, Tempe, AZ (US);
Gregory L. Dean, Phoenix, AZ (US);
Frank Schwab, Phoenix, AZ (US);
Validity Sensors, Inc., San Jose, CA (US);
Abstract
The invention is directed to a system for securing an integrated circuit chip used in an electronic device by utilizing a circuit or other entity to produce physically unclonable functions (PUF) circuit to generate encryption keys, such as an RSA public or private key. A PUF circuit, according to its name and configuration, performs functions that are substantially difficult to be duplicated or cloned. This allows the invention to provide a unique and extremely secure system for authentication. In operation, the stored parameters can be used to more efficiently and quickly authenticate the device without the need to run the usual more burdensome encryption key generation processes without compromising the level of security in the device. Such a system can be used to substantially eliminate the time to produce encryption keys when a user needs to authenticate the device at power up or other access point.