PIN recovery in a smart card

Information security – Access control or authentication – Network

Reexamination Certificate

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Details

C705S065000

Reexamination Certificate

active

07461399

ABSTRACT:
A method of controlling access to resources on a smart card, the method involving: providing a list of n questions for presentation to the user, where n is an integer; receiving from the user answers to questions among the list of n questions; determining how many of the received answers are correct; and if a sufficient number of the n questions was answered correctly, granting access to the resources on the smart card.

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International Search Report of PCT/US2005/026602, Jun. 8, 2006, 3 Pages, European Patent Office.
Frykholm, N., et al. “Error-Tolerant Password Recovery,” CCS'01 Nov. 2001, ACM 1-58113-385-5/01/0011 (9 pgs.).
Ellison, C., et al., “Protecting Secret Keys with Personal Entropy,” Elsevier 1999 (13 pgs.).
Brainard, J., et al., “A New Two-Server Approach for Authentication with Short Secrets,” RSA Laboratories (13 pgs.) 2003.

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