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DSI Publications

Journal Article

On the pitfalls of using arbiter-PUFs as building blocks

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 34 (8): 1295–1307
Georg T. Becker (2015)
Subject(s)
Information technology and systems
Keyword(s)
Protocols, delays, authentication, error correction codes, computational modeling, buildings, evolution strategies, physical unclonable functions, machine learning, reverse fuzzy extractor
Physical unclonable functions (PUFs) have emerged as a promising solution for securing resource-constrained embedded devices such as RFID tokens. PUFs use the inherent physical differences of every chip to either securely authenticate the chip or generate cryptographic keys without the need of nonvolatile memory. However, PUFs have shown to be vulnerable to model building attacks if the attacker has access to challenge and response pairs. In these model building attacks, machine learning is used to determine the internal parameters of the PUF to build an accurate software model. Nevertheless, PUFs are still a promising building block and several protocols and designs have been proposed that are believed to be resistant against machine learning attacks. In this paper, we take a closer look at two such protocols, one based on reverse fuzzy extractors and one based on pattern matching. We show that it is possible to attack these protocols using machine learning despite the fact that an attacker does not have access to direct challenge and response pairs. The introduced attacks demonstrate that even highly obfuscated responses can be used to attack PUF protocols. Hence, this paper shows that even protocols in which it would be computationally infeasible to compute enough challenge and response pairs for a direct machine learning attack can be attacked using machine learning.
Copyright © 2014 by the Institute of Electrical and Electronics Engineers, Inc
Volume
34
Journal Pages
1295–1307
Conference Proceeding

Development of a layout-level hardware obfuscation tool

IEEE Computer Society Annual Symposium on VLSI - ISVLSI 2015 (Invited Paper)
Shweta Malik, Georg T. Becker, Christof Paar, Wayne Burleson (2015)
Subject(s)
Information technology and systems
Keyword(s)
Logic gates, wires, libraries, standards, hardware, wiring, industries
Conference Proceeding

On the scaling of machine learning attacks on PUFs with application to noise bifurcation

11th Workshop on RFID Security (RFIDSec 2015): 17–31
Jo­han­nes Tobisch, Georg T. Becker (2015)
Subject(s)
Information technology and systems
Keyword(s)
Physical unclonable function, machine learning attacks, arbiter PUF, noise-bifurcation
Journal Pages
17–31
Conference Proceeding

Security analysis of index-based syndrome coding for PUF-based key generation

IEEE International Symposium on Hardware Oriented Security and Trust - HOST 2015
Georg T. Becker, Alexander Wild, Tim Güneysu (2015)
Subject(s)
Information technology and systems
Book Chapter

Cybersecurity: Kleiner Katalog der Cyberrisiken

In Handbuch Sicherheitsgefahren, edited by Thomas Jäger, 229–238. Wiesbaden: Springer.
Subject(s)
Economics, politics and business environment
Secondary Title
Handbuch Sicherheitsgefahren
Pages
229–238
ISBN
978-3-658-02752-0
Book Review

Amerika abwickeln [Unwinding America]

Internationale Politik
Subject(s)
Economics, politics and business environment
Keyword(s)
American decline, US politics
Review of: The Unwinding: An Inner History of the New America by George Packer, The Myth of America’s Decline - Economics, and a Half Century of False Prophecies by Josef Joffe, and Amerikas Kriege by Alexander Emmerich and Philipp Gassert.
Journal Pages
138–141
Journal Article

Cyberdefense: Worst of all cyber construction sites

Georgetown Journal of International Affairs 4: 45–54
Subject(s)
Economics, politics and business environment
Volume
4
Journal Pages
45–54
Journal Article

Mehr Staat fürs Netz

IP - Internationale Politik 4 (4): 100–105
Volume
4
Journal Pages
100–105
Other

The Democracy delusion: Why multistakeholderism in Internet governance is wrong and dangerous

IP - Internationale Politik
Subject(s)
Economics, politics and business environment
Journal Article

Stealthy dopant-level hardware Trojans

Journal of Cryptographic Engineering 1 (4): 19–31
Georg T. Becker, Fran­ces­co Regazzoni, Chris­tof Paar, Wayne P Burleson (2014)
Subject(s)
Information technology and systems
Keyword(s)
Hardware Trojans, malicious hardware, layout modifications, Trojan side-channel
Volume
1
Journal Pages
19–31