Topics in Cryptology – CT-RSA 2024
Cryptographers’ Track at the RSA Conference 2024, San Francisco, CA, USA, May 6–9, 2024, Proceedings
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Chapter and Conference Paper
A Novel Framework for Explainable Leakage Assessment
Schemes such as Common Criteria or FIPS 140-3 require the assessment of cryptographic implementations with respect to side channels at high security levels. Instead of a “penetration testing” style approach wh...
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Book and Conference Proceedings
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Chapter and Conference Paper
Exploring Multi-task Learning in the Context of Masked AES Implementations
Deep learning is very efficient at breaking masked implementations even when the attacker does not assume knowledge of the masks. However, recent works pointed out a significant challenge: overcoming the initi...
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Chapter and Conference Paper
Not Optimal but Efficient: A Distinguisher Based on the Kruskal-Wallis Test
Research about the theoretical properties of side channel distinguishers revealed the rules by which to maximise the probability of first order success (“optimal distinguishers”) under different assumptions ab...
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Chapter and Conference Paper
Comparing Key Rank Estimation Methods
Recent works on key rank estimation methods claim that algorithmic key rank estimation is too slow, and suggest two new ideas: replacing repeat attacks with simulated attacks (PS-TH-GE rank estimation), and a ...
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Chapter and Conference Paper
A Comparison of Multi-task Learning and Single-Task Learning Approaches
In this paper, we provide experimental evidence for the benefits of multi-task learning in the context of masked AES implementations (via the ASCADv1-r and ASCADv2 databases). We develop an approach for compar...
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Chapter and Conference Paper
A Novel Completeness Test for Leakage Models and Its Application to Side Channel Attacks and Responsibly Engineered Simulators
Today’s side channel attack targets are often complex devices in which instructions are processed in parallel and work on 32-bit data words. Consequently, the state that is involved in producing leakage in these ...
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Chapter and Conference Paper
Towards Micro-architectural Leakage Simulators: Reverse Engineering Micro-architectural Leakage Features Is Practical
Leakage simulators offer the tantalising promise of easy and quick testing of software with respect to the presence of side channel leakage. The quality of their build in leakage models is therefore crucial, t...
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Article
Open AccessExploring Parallelism to Improve the Performance of FrodoKEM in Hardware
FrodoKEM is a lattice-based key encapsulation mechanism, currently a semi-finalist in NIST’s post-quantum standardisation effort. A condition for these candidates is to use NIST standards for sources of random...
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Chapter and Conference Paper
A Systematic Appraisal of Side Channel Evaluation Strategies
In this paper we examine the central question that is how well do side channel evaluation regimes capture the true security level of a product. Concretely, answering this question requires considering the opti...
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Chapter and Conference Paper
Assessing the Feasibility of Single Trace Power Analysis of Frodo
Lattice-based schemes are among the most promising post-quantum schemes, yet the effect of both parameter and implementation choices on their side-channel resilience is still poorly understood. Aysu et al. (HO...
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Chapter and Conference Paper
Constructing TI-Friendly Substitution Boxes Using Shift-Invariant Permutations
The threat posed by side channels requires ciphers that can be efficiently protected in both software and hardware against such attacks. In this paper, we proposed a novel Sbox construction based on iterations...
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Chapter and Conference Paper
A Critical Analysis of ISO 17825 (‘Testing Methods for the Mitigation of Non-invasive Attack Classes Against Cryptographic Modules’)
The ISO standardisation of ‘Testing methods for the mitigation of non-invasive attack classes against cryptographic modules’ (ISO/IEC 17825:2016) specifies the use of the Test Vector Leakage Assessment (TVLA) ...
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Chapter and Conference Paper
A Systematic Study of the Impact of Graphical Models on Inference-Based Attacks on AES
Belief propagation, or the sum-product algorithm, is a powerful and well known method for inference on probabilistic graphical models, which has been proposed for the specific use in side channel analysis by V...
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Chapter and Conference Paper
Non-profiled Mask Recovery: The Impact of Independent Component Analysis
As one of the most prevalent SCA countermeasures, masking schemes are designed to defeat a broad range of side channel attacks. An attack vector that is suitable for low-order masking schemes is to try and dir...
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Article
NZGS klar abgrenzen von Zöliakie und Weizen- oder Getreidesensitivität
Das Bild der Zöliakie hat sich deutlich vom malabsorptiven Verlauf, hin zu einem chamäleonartigen Verlauf mit wenigen oder nur oligosymptomatischen gastrointestinalen Beschwerden, aber zunehmend extraintestina...
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Chapter and Conference Paper
A Novel Use of Kernel Discriminant Analysis as a Higher-Order Side-Channel Distinguisher
Distinguishers play an important role in Side Channel Analysis (SCA), where real world leakage information is compared against hypothetical predictions in order to guess at the underlying secret key. However, ...
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Chapter and Conference Paper
Quantum Key Search with Side Channel Advice
Recently, a number of results have been published that show how to combine classical cryptanalysis with quantum algorithms, thereby (potentially) achieving considerable speed-ups. We follow this trend but add ...
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Chapter and Conference Paper
Two Sides of the Same Coin: Counting and Enumerating Keys Post Side-Channel Attacks Revisited
Motivated by the need to assess the concrete security of a device after a side channel attack, there has been a flurry of recent work designing both key rank and key enumeration algorithms. Two main competitor...
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Chapter and Conference Paper
Categorising and Comparing Cluster-Based DPA Distinguishers
Side-channel distinguishers play an important role in differential power analysis, where real world leakage information is compared against hypothetical predictions in order to guess at the underlying secret k...
