Patent Number:
8,880,954
Title:
Temperature-profiled device fingerprint generation and authentication from power-up states of static cells
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.
Inventors:
Gebara; Fadi H. (Austin, TX), Kim; Joonsoo (Austin, TX), Schaub; Jeremy D. (Austin, TX), Strumpen; Volker (Austin, TX)
Assignee:
International Business Machines Corporation
International Classification:
G06F 11/00 (20060101)
Expiration Date:
2019-11-04 0:00:00