CHES 2021

Accepted Papers

TCHES 2021, issue 1

1. Compact Dilithium Implementations on Cortex-M3 and Cortex-M4

   Denisa O. C. Greconici; Matthias J. Kannwischer; Daan Sprenkels
   Radboud University; Max Planck Institute for Security and Privacy; Radboud University

2. Ranking Loss: Maximizing the Success Rate in Deep Learning Side-Channel Analysis

   Gabriel Zaid; Lilian Bossuet; François Dassance; Amaury Habrard; Alexandre Venelli
   Univ Lyon, UJM-Saint-Etienne, CNRS Laboratoire Hubert Curien UMR 5516 F-42023, Saint-Etienne, France; Thales ITSEF, Toulouse, France; Univ Lyon, UJM-Saint-Etienne, CNRS Laboratoire Hubert Curien UMR 5516 F-42023, Saint-Etienne, France; Thales ITSEF, Toulouse, France; Univ Lyon, UJM-Saint-Etienne, CNRS Laboratoire Hubert Curien UMR 5516 F-42023, Saint-Etienne, France; Thales ITSEF, Toulouse, France

3. Fill your Boots: Enhanced Embedded Bootloader Exploits via Fault Injection and Binary Analysis

   Jan Van den Herrewegen; David Oswald; Flavio Garcia; Qais Temeiza
   The University of Birmingham; The University of Birmingham; The University of Birmingham; Independent Researcher

4. Doppelganger Obfuscation - Exploring the Defensive and Offensive Aspects of Hardware Camouflaging

   Max Hoffmann; Christof Paar
   Ruhr University Bochum, Horst Görtz Institute for IT Security, Germany; Max Planck Institute for Security and Privacy, Bochum, Germany; Max Planck Institute for Security and Privacy, Bochum, Germany

5. The design of scalar AES Instruction Set Extensions for RISC-V

   Ben Marshall; G. Richard Newell; Dan Page; Markku-Juhani O. Saarinen; Claire Wolf
   University of Bristol; Microchip Technology; University of Bristol; PQShield; Symbiotic EDA

6. Rapidly Verifiable XMSS Signatures

   Joppe W. Bos; Andreas Hülsing; Joost Renes; Christine van Vredendaal
   NXP Semiconductors; Eindhoven University of Technology; NXP Semiconductors; NXP Semiconductors

7. DAPA: Differential Analysis aided Power Attack on (Non-)Linear Feedback Shift Registers

   Siang Meng Sim; Dirmanto Jap; Shivam Bhasin
   DSO National Laboratories; Temasek Laboratories, NTU Singapore; Temasek Laboratories, NTU Singapore

8. Fault Injection as an Oscilloscope: Fault Correlation Analysis

   Albert Spruyt; Alyssa Milburn; Lukasz Chmielewski
   ; Vrije Universiteit Amsterdam; Radboud University

9. Polynomial Multiplication in NTRU Prime

   Erdem Alkim; Dean Yun-Li Cheng; Chi-Ming Marvin Chung; Hülya Evkan; Leo Wei-Lun Huang; Vincent Hwang; Ching-Lin Trista Li; Ruben Niederhagen; Cheng-Jhih Shih; Julian Wälde; Bo-Yin Yang
   Ondokuz Mayis University; Academia Sinica; Academia Sinica; Fraunhofer SIT; Academia Sinica; Academia Sinica; Academia Sinica; University of Southern Denmark; Academia Sinica; Fraunhofer SIT; Academia Sinica

10. The Area-Latency Symbiosis: Towards Improved Serial Encryption Circuits

    Fatih Balli; Andrea Caforio; Subhadeep Banik
    EPFL Switzerland; EPFL Switzerland; EPFL Switzerland

11. Side-Channel Analysis of the Xilinx ZYNQ Ultrascale+ Encryption Engine

    Benjamin Hettwer; Sebastien Leger; Daniel Fennes; Stefan Gehrer; Tim Güneysu
    Robert Bosch GmbH, Corporate Sector Research, Stuttgart, Germany; Robert Bosch GmbH, Corporate Sector Research, Stuttgart, Germany; Ruhr University Bochum, Bochum, Germany; Robert Bosch LLC, Pittsburgh, USA; Ruhr University Bochum, Bochum, Germany

12. Re-Consolidating First-Order Masking Schemes - Nullifying Fresh Randomness

    Aein Rezaei Shahmirzadi; Amir Moradi
    Ruhr University Bochum; Ruhr University Bochum

13. Keep it Unsupervised: Horizontal Attacks Meet Deep Learning

    Guilherme Perin; Lukasz Chmielewski; Lejla Batina; Stjepan Picek
    Delft University of Technology; Riscure BV, Radboud University Nijmegen; Radboud University Nijmegen; Delft University of Technology

14. Exploring Crypto-Physical Dark Matter and Learning with Physical Rounding (Towards Secure and Efficient Fresh Re-Keying)

    Sébastien Duval; Pierrick Méaux; Charles Momin; François-Xavier Standaert
    UCLouvain; UCLouvain; UCLouvain; UCLouvain

15. Fixslicing AES-like Ciphers - New bitsliced AES speed records on ARM-Cortex M and RISC-V

    Alexandre Adomnicai; Thomas Peyrin
    Nanyang Technological University; Nanyang Technological University

16. Redundant Code-based Masking Revisited

    Nicolas Costes; Martijn Stam
    Simula UiB; Simula UiB

17. Concrete quantum cryptanalysis of binary elliptic curves

    Gustavo Banegas; Daniel J. Bernstein; Iggy van Hoof; Tanja Lange
    Chalmers University of Technology; University of Illinois, Ruhr University Bochum; Eindhoven University of Technology; Eindhoven University of Technology

TCHES 2021, issue 2

1. Machine Learning of Physical Unclonable Functions using Helper Data - Revealing a Pitfall in the Fuzzy Commitment Scheme

   Emanuele Strieder; Christoph Frisch; Michael Pehl
   Fraunhofer Institute for Applied and Integrated Security AISEC; Technical University of Munich

2. Fault Attacks on CCA-secure Lattice KEMs

   Peter Pessl; Lukas Prokop
   Infineon Technologies; Graz University of Technology

3. Combining Optimization Objectives: New Modeling Attacks on Strong PUFs

   Johannes Tobisch; Anita Aghaie; Georg T. Becker
   Max Planck Institute for Security and Privacy, Bochum; Ruhr University Bochum, Horst Görtz Institute for IT Security, Bochum; DCSO, Berlin

4. A White-Box Masking Scheme Resisting Computational and Algebraic Attacks

   Okan Seker; Thomas Eisenbarth; Maciej Liskiewicz
   University of Lübeck

5. Secure, Accurate, and Practical Narrow-Band Ranging System

   Aysajan Abidin; Mohieddine El Soussi; Jac Romme; Pepijn Boer; Dave Singelée; Christian Bachmann
   imec-COSIC KU Leuven; imec, The Netherlands

6. Provably Secure Hardware Masking in the Transition- and Glitch-Robust Probing Model: Better Safe than Sorry

   Gaëtan Cassiers; François-Xavier Standaert
   UCLouvain

7. NTT Multiplication for NTT-unfriendly Rings

   Chi-Ming Marvin Chung; Vincent Hwang; Matthias J. Kannwischer; Gregor Seiler; Cheng-Jhih Shih; Bo-Yin Yang
   National Taiwan University and Academia Sinica; Max Planck Institute for Security and Privacy; IBM Research, Zurich; Academia Sinica

8. Masking in Fine-Grained Leakage Models: Construction, Implementation and Verification

   Gilles Barthe; Marc Gourjon; Benjamin Grégoire; Maximilian Orlt; Clara Paglialonga; Lars Porth
   MPI-SP, Germany and IMDEA Software Institute, Spain; Hamburg University of Technology and NXP Semiconductors Germany GmbH; Inria, France; TU Darmstadt, Germany

9. Revisiting the functional bootstrap in TFHE

   Antonio Guimarães; Edson Borin; Diego F. Aranha
   University of Campinas; Aarhus University

10. Time-Memory Analysis for Parallel Collision Search Algorithms

    Monika Trimoska; Sorina Ionica; Gilles Dequen
    University of Picardie Jules Verne

11. RASSLE: Return Address Stack based Side-channel LEakage

    Anirban Chakraborty; Sarani Bhattacharya; Manaar Alam; Sikhar Patranabis; Debdeep Mukhopadhyay
    Indian Institute of Technology, Kharagpur; Katholieke Universiteit Leuven; ETH Zurich, Switzerland

12. New First-Order Secure AES Performance Records

    Aein Rezaei Shahmirzadi; Dusan Bozilov; Amir Moradi
    Ruhr Uni­ver­si­ty Bo­chum, Horst Görtz Institute for IT Security, Bochum; NXP Semiconductors, Leuven, Belgium and COSIC KU Leuven and imec, Leuven, Belgium

13. A Compact Hardware Implementation of CCA-Secure Key Exchange Mechanism CRYSTALS-KYBER on FPGA

    Yufei Xing; Shuguo Li
    Tsinghua University

TCHES 2021, issue 3

1. Speed Reading in the Dark: Accelerating Functional Encryption for Quadratic Functions with Reprogrammable Hardware

   Milad Bahadori; Kimmo Järvinen; Tilen Marc; Miha Stopar
   University of Helsinki; XLAB

2. Online Template Attacks: Revisited

   Alejandro Cabrera Aldaya; Billy Bob Brumley
   Tampere University

3. Efficiency through Diversity in Ensemble Models applied to Side-Channel Attacks -- A Case Study on Public-Key Algorithms --

   Gabriel Zaid; Lilian Bossuet; Amaury Habrard; Alexandre Venelli
   Univ Lyon, UJM-Saint-Etienne, CNRS Laboratoire Hubert Curien UMR 5516 F-42023, Saint-Etienne, France; Thales ITSEF, Toulouse, France; Univ Lyon, UJM-Saint-Etienne, CNRS Laboratoire Hubert Curien UMR 5516 F-42023, Saint-Etienne, France; NXP Semiconductors, Toulouse, France

4. Optimizing BIKE for the Intel Haswell and ARM Cortex-M4

   Tung Chou; Ming-Shing Chen; Markus Krausz
   Academia Sinica; Ruhr University Bochum

5. Classic McEliece on the ARM Cortex-M4

   Tung Chou; Ming-Shing Chen
   Academia Sinica; Ruhr University Bochum

6. Timing Black-Box Attacks: Crafting Adversarial Examples through Data-dependent Timing Leaks against DNNs on Embedded Devices

   Tsunato Nakai; Daisuke Suzuki; Takeshi Fujino
   Mitsubishi Electric Corporation; Ritsumeikan University

7. Security and Trust in Open Source Security Tokens

   Marc Schink; Alexander Wagner; Florian Unterstein; Johann Heyszl
   Fraunhofer Institute for Applied and Integrated Security (AISEC)

8. Breaking Masked Implementations with Many Shares on 32-bit Software Platforms or When the Security Order Does Not Matter

   Olivier Bronchain; François-Xavier Standaert
   UCLouvain

9. Pay Attention to Raw Traces: A Deep Learning Architecture for End-to-End Profiling Attacks

   Xiangjun Lu; Chi Zhang; Pei Cao; Dawu Gu; Haining Lu
   Shanghai Jiao Tong University

10. Analysis and Comparison of Table-based Arithmetic to Boolean Masking

    Michiel Van Beirendonck; Jan-Pieter D'Anvers; Ingrid Verbauwhede
    imec-COSIC KU Leuven

11. AES-LBBB: AES Mode for Lightweight and BBB-Secure Authenticated Encryption

    Yusuke Naito; Yu Sasaki; Takeshi Sugawara
    Mitsubishi Electric Corporation; NTT Secure Platform Laboratories; The University of Electro-Communications

12. Attacking and Defending Masked Polynomial Comparison for Lattice-Based Cryptography

    Shivam Bhasin; Jan-Pieter D'Anvers; Daniel Heinz; Thomas Pöppelmann; Michiel Van Beirendonck
    NTU Signapore; imec-COSIC KU Leuven; Research Institute CODE; Infineon Technologies

13. Cutting Through the Complexity of Reverse Engineering Embedded Devices

    Sam L. Thomas; Jan Van den Herrewegen; Georgios Vasilakis; Zitai Chen; Mihai Ordean; Flavio D. Garcia
    University of Birmingham

14. Learning Parity with Physical Noise: Imperfections, Reductions and FPGA Prototype

    Davide Bellizia; Clément Hoffmann; Dina Kamel; Hanlin Liu; Pierrick Méaux; François-Xavier Standaert; Yu Yu
    UCLouvain; Shanghai Jiao Tong University; UClouvain

15. Breaking CAS-Lock and Its Variants by Exploiting Structural Traces

    Abhrajit Sengupta; Nimisha Limaye; Ozgur Sinanoglu
    New York University; New York University Abu Dhabi

16. Denial-of-Service on FPGA-based Cloud Infrastructure - Attack and Defense

    Tuan La; Khoa Pham; Joseph Powell; Dirk Koch
    University of Manchester; Univerisity of Manchester; Universtify of Manchester

17. Information Leakages in Code-based Masking: A Unified Quantification Approach

    Wei Cheng; Sylvain Guilley; Claude Carlet; Jean-Luc Danger; Sihem Mesnager
    Télécom Paris; Secure-IC; Télécom Paris; University of Paris 8; Télécom Paris; Secure-IC

18. Let's Take it Offline: Boosting Brute-Force Attacks on iPhone's User Authentication through SCA

    Oleksiy Lisovets; David Knichel; Thorben Moos; Amir Moradi
    Ruhr University Bochum

19. Inconsistency of Simulation and Practice in Delay-based Strong PUFs

    Anita Aghaie; Amir Moradi
    Ruhr University Bochum; Ruhr University Bo­chum

20. DL-LA: Deep Learning Leakage Assessment - A modern roadmap for SCA evaluations

    Thorben Moos; Felix Wegener; Amir Moradi
    Ruhr University Bochum

21. Probing Security through Input-Output Separation and Revisited Quasilinear Masking

    Dahmun Goudarzi; Thomas Prest; Matthieu Rivain; Damien Vergnaud
    Independent researcher; PQShield; CryptoExperts; Sorbonne Université

22. Improved Leakage-Resistant Authenticated Encryption based on Hardware AES Coprocessors

    Olivier Bronchain; Charles Momin; Thomas Peters; François-Xavier Standaert
    UCLouvain

23. Reinforcement Learning for Hyperparameter Tuning in Deep Learning-based Side-channel Analysis

    Jorai Rijsdijk; Lichao Wu; Guilherme Perin; Stjepan Picek
    TU Delft

24. Second-Order SCA Security with almost no Fresh Randomness

    Aein Rezaei Shahmirzadi; Amir Moradi
    Ruhr University Bochum

25. SEAL-Embedded: A Homomorphic Encryption Library for the Internet of Things

    Deepika Natarajan; Wei Dai
    University of Michigan; Microsoft Research

26. Countermeasures against Static Power Attacks - Comparing Exhaustive Logic Balancing and Other Protection Schemes in 28 nm CMOS -

    Thorben Moos; Amir Moradi
    Ruhr University Bochum

TCHES 2021, issue 4

1. LifeLine for FPGA Protection: Obfuscated Cryptography for Real-World Security

   Florian Stolz; Nils Albartus; Julian Speith; Simon Klix; Clemens Nasenberg; Aiden Gula; Marc Fyrbiak; Christof Paar; Tim Güneysu; Russell Tessier
   Ruhr University Bochum, Horst Görtz Institute for IT Security, Germany; Ruhr University Bochum, Horst Görtz Institute for IT Security, Germany; Max Planck Institute for Security and Privacy, Bochum, Germany; Max Planck Institute for Security and Privacy, Bochum, Germany; University of Massachusetts, Amherst, USA

2. Yoroi: Updatable Whitebox Cryptography

   Yuji Koike; Takanori Isobe
   University of Hyogo; University of Hyogo / National Institute of Information and Communications Technology

3. Rainbow on Cortex-M4

   Tung Chou; Matthias J. Kannwischer; Bo-Yin Yang
   Academia Sinica; Max Planck Institute for Security and Privacy

4. A Side-Channel Attack on a Masked IND-CCA Secure Saber KEM Implementation

   Kalle Ngo; Elena Dubrova; Qian Guo; Thomas Johansson
   KTH Royal Institute of Technology; Lund University

5. Novel Key Recovery Attack on Secure ECDSA Implementation by Exploiting Collisions between Unknown Entries

   Sunghyun Jin; Sangyub Lee; Sung Min Cho; HeeSeok Kim; Seokhie Hong
   School of Cyber Security, Center for Information Security Technologies, Institute of Cyber Security and Privacy, Korea University; National Institute for Mathematical Sciences; CIOT; Department of Cyber Security, College of Science and Technology, Korea University

6. Cross-Device Profiled Side-Channel Attack with Unsupervised Domain Adaptation

   Pei Cao; Chi Zhang; Xiangjun Lu; Dawu Gu
   School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

7. Structural Attack (and Repair) of Diffused-Input-Blocked-Output White Box Cryptography

   Claude Carlet; Sylvain Guilley; Sihem Mesnager
   University of Bergen; Secure-IC; University of Paris 8

8. Chosen Ciphertext k-Trace Attacks on Masked CCA2 Secure Kyber

   Mike Hamburg; Julius Hermelink; Robert Primas; Simona Samardjiska; Thomas Schamberger; Silvan Streit; Emanuele Strieder; Christine van Vredendaal
   Rambus Labs; Universität der Bundeswehr München; Graz University of Technology; Radboud University; Technical University of Munich; Fraunhofer Institute AISEC; NXP Semiconductors

9. Over 100x Faster Bootstrapping in Fully Homomorphic Encryption through Memory-centric Optimization with GPUs

   Wonkyung Jung; Sangpyo Kim; Jung Ho Ahn; Jung Hee Cheon; Younho Lee
   Seoul National University; SeoulTech

10. My other car is your car: Compromising the Tesla Model X keyless entry system

    Lennert Wouters; Benedikt Gierlichs; Bart Preneel
    KU Leuven

11. Masking Kyber: First- and Higher-Order Implementations

    Joppe W. Bos; Marc Gourjon; Joost Renes; Tobias Schneider; Christine van Vredendaal
    NXP Semiconductors; NXP Semiconductors and Hamburg University of Technology

12. ROTed: Random Oblivious Transfer for embedded devices

    Pedro Branco; Luís Fiolhais; Manuel Goulão; Paulo Martins; Paulo Mateus; Leonel Sousa
    Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa; INESC-ID, Instituto Superior Técnico, Universidade de Lisboa

13. Side-Channel Protections for Picnic Signatures

    Diego F. Aranha; Sebastian Berndt; Thomas Eisenbarth; Okan Seker; Akira Takahashi; Luca Wilke; Greg Zaverucha
    Aarhus University; University of Lübeck; Microsoft Research

14. An Instruction Set Extension to Support Software-Based Masking

    Si Gao; Johann Großschädl; Ben Marshall; Dan Page; Thinh Pham; Francesco Regazzoni
    Alpen-Adria Universität Klagenfurt; University of Luxembourg; University of Bristol and PQShield; University of Bristol; University of Amsterdam and Università della Svizzera italiana

15. Revealing the Weakness of Addition Chain Based Masked SBox Implementations

    Jingdian Ming; Huizhong Li; Yongbin Zhou; Wei Cheng; Zehua Qiao
    Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China; School of Cyber Security, University of Chinese Academy of Sciences, Beijing, China; Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China; School of Cyber Security, University of Chinese Academy of Sciences, Beijing, China; School of Cyber Security, Nanjing University of Science and Technology, Nanjing, China; Telecom Paris, Polytechnique de Paris, Palaiseau, France

16. CTIDH: faster constant-time CSIDH

    Gustavo Banegas; Daniel J. Bernstein; Fabio Campos; Tung Chou; Tanja Lange; Michael Meyer; Benjamin Smith; Jana Sotáková
    Inria and Laboratoire d’Informatique de l’Ecole Polytechnique, Institut Polytechnique de Paris; University of Illinois at Chicago, Ruhr University Bochum; Max Planck Institute for Security and Privacy; Academia Sinica; Eindhoven University of Technology; Technical University of Darmstadt; Inria and Laboratoire d’Informatique de l’École Polytechnique, Institut Polytechnique de Paris; University of Amsterdam, QuSoft

17. Low-Latency Keccak at any Arbitrary Order

    Sara Zarei; Aein Rezaei Shahmirzadi; Hadi Soleimany; Raziye Salarifard; Amir Moradi
    Shahid Beheshti University; Ruhr University Bochum

18. FIVER - Robust Verification of Countermeasures against Fault Injections

    Jan Richter-Brockmann; Aein Rezaei Shahmirzadi; Pascal Sasdrich; Amir Moradi; Tim Güneysu
    Ruhr University Bochum; Ruhr University Bochum, DFKI

19. Scabbard: a suite of efficient learning with rounding key-encapsulation mechanisms

    Jose Maria Bermudo Mera; Angshuman Karmakar; Suparna Kundu; Ingrid Verbauwhede
    imec-COSIC, KU Leuven

20. The SPEEDY Family of Block Ciphers - Engineering an Ultra Low-Latency Cipher from Gate Level for Secure Processor Architectures

    Gregor Leander; Thorben Moos; Amir Moradi; Shahram Rasoolzadeh
    Ruhr University Bochum; Radboud University Nijmegen

21. Higher-Order Lookup Table Masking in Essentially Constant Memory

    Annapurna Valiveti; Srinivas Vivek
    IIIT Bangalore, IN

22. Batching CSIDH Group Actions using AVX-512

    Hao Cheng; Georgios Fotiadis; Johann Großschädl; Peter Y. A. Ryan; Peter B. Rønne
    University of Luxembourg