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Title:
Scan-based Attacks on Linear Feedback Shift Register Based Stream Ciphers
Authors: Yu Liu, Kaijie Wu, Ramesh Karri
Abstract:In this paper, we present an attack on stream cipher implementations by determining the scan chain structure of the linear feedback shift registers in their implementations. Although scan Design-for-Test (DFT) is a powerful testing scheme, we show that it can be used to retrieve the information stored in a crypto chip thus compromising its theoretically proven security.
ePrint: https://eprint.iacr.org/2009/584
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