International Test Conference 2004 (ITC'04) Scan Based Side Channel Attack on Dedicated Hardware Implementations of Data Encryption Standard Charlotte, NC, USA October 26-October 28 ISBN: 0-7803-8581-0
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ITC.2004.157
Scan based test is a double edged sword. On one hand, it is a powerful test technique. On the other hand, it is an equally powerful attack tool. In this paper we show that scan chains can be used as a side channel to recover secret keys from a hardware implementation of the Data Encryption Standard (DES). By loading pairs of known plaintexts with one-bit difference in the normal mode and then scanning out the internal state in the test mode, we first determine the position of all scan elements in the scan chain. Then, based on a systematic analysis of the structure of the nonlinear substitution boxes, and using three additional plaintexts we discover the DES secret key. Finally, some assumptions in the attack are discussed.
Citation:
Bo Yang, Kaijie Wu, Ramesh Karri, "Scan Based Side Channel Attack on Dedicated Hardware Implementations of Data Encryption Standard," itc, pp.339-344, International Test Conference 2004 (ITC'04), 2004 Usage of this product signifies your acceptance of the Terms of Use. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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