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1. (WO2017040124) SYSTEM AND METHOD FOR DETECTION OF CLONED DEVICES

Pub. No.:    WO/2017/040124    International Application No.:    PCT/US2016/048239
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 24 01:59:59 CEST 2016
IPC: H04L 9/32
H04L 9/08
Applicants: PCMS HOLDINGS, INC.
Inventors: JUELS, Ari
Title: SYSTEM AND METHOD FOR DETECTION OF CLONED DEVICES
Abstract:
Systems and methods are described for detecting cloning of authentication devices. In an exemplary embodiment, authorized users are provided with valid authentication devices (e.g. tokens). Each device internally generates a random anti-cloning key, such that the key is unknown to the device manufacturer. In use, a valid device receives an authentication challenge and provides a response that includes the anti-cloning key (or encrypted version thereof) in a subliminal channel. A cloned device may fail to make proper use of the subliminal channel, or if it does, it is unlikely to use the same internally-generated anti-cloning key as a valid device. A cloning detection system recognizes when different anti-cloning keys purport to be from the same valid device, indicating likely cloning of the valid device.