Welcome to the resource topic for 2019/1443
Title:
CAS-Unlock: Unlocking CAS-Lock without Access to a Reverse-Engineered Netlist
Authors: Abhrajit Sengupta, Ozgur Sinanoglu
Abstract:CAS-Lock (cascaded locking) is a SAT-resilient locking technique, which can simultaneously thwart SAT and bypass attack, while maintaining non-trivial output corruptibility. Despite all of its theoretical guarantees, in this report we expose a serious flaw in its design that can be exploited to break CAS-Lock. Further, this attack neither requires access to a reverse-engineered netlist, nor it requires a working oracle with the correct key loaded onto the chip’s memory. We demonstrate that we can activate any CAS-Locked IC without knowing the secret key.
ePrint: https://eprint.iacr.org/2019/1443
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