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:
Jul. 23, 2013
Filed:
May. 30, 2012
Fadi H. Gebara, Austin, TX (US);
Joonsoo Kim, Austin, TX (US);
Jeremy D. Schaub, Austin, TX (US);
Volker Strumpen, Austin, TX (US);
Fadi H. Gebara, Austin, TX (US);
Joonsoo Kim, Austin, TX (US);
Jeremy D. Schaub, Austin, TX (US);
Volker Strumpen, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, system and computer program product for generating device fingerprints and authenticating devices uses initial states of internal storage cells after each of a number multiple power cycles for each of a number of device temperatures to generate a device fingerprint. The device fingerprint may include pairs of expected values for each of the internal storage cells and a corresponding probability that the storage cell will assume the expected value. Storage cells that have expected values varying over the multiple temperatures may be excluded from the fingerprint. A device is authenticated by a similarity algorithm that uses a match of the expected values from a known fingerprint with power-up values from an unknown device, weighting the comparisons by the probability for each cell to compute a similarity measure.