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Distinguished Researcher Yosuke Todo
  • Distinguished Researcher

    Yosuke Todo

  • NTT Social Informatics Laboratories

Foundation for symmetric-key ciphers, and design and analysis on dedicated purpose symmetric-key ciphers

We aim to establish the foundation for symmetric-key ciphers. The security evaluation against symmetric-key ciphers and the design of dedicated-purpose ciphers.

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Awards

  • Aug. 2015: CRYPTO 2015 Best Paper Award "Integral Cryptanalysis on Full MISTY1"
  • Aug. 2015: CRYPTO 2015 Best Young Researcher Award "Integral Cryptanalysis on Full MISTY1"
  • Jan. 2016: IEICE SCIS Best Paper Award "Design for Involutive Symmetric-Key Primitive"
  • Jun. 2019: The 75th IEICE Best Paper Award "On the Design Rationale of SIMON Block Cipher: Integral Attacks and Impossible Differential Attacks against SIMON Variants"
  • Aug. 2020: CRYPTO 2020 Best Paper Award "Improved Differential-Linear Attacks with Applications to ARX Ciphers"
  • Sep. 2020: Best Author Award of IEICE Fundamental Review "Evolution of Symmetric-Key Cryptosystems"
  • Mar. 2023: FSE 2023 Best Paper Award "Hybrid Code Lifting on Space-Hard Block Ciphers --Application to Yoroi and SPNbox"

Visiting Professor

  • Ruhr-University Bochum, Visiting Researcher (2019-2020)
  • Hosei University, Part-time lecture (2021-2023)
  • Waseda University, Invited lecture (2022-2023)

Papers

Selected journal and conference papers

  • Yosuke Todo, "Structural Evaluation by Generalized Integral Property" EUROCRYPT 2015.
  • Yosuke Todo, "Integral Cryptanalysis on Full MISTY1" Journal of Cryptology, 2017.
  • Yosuke Todo, Takanori Isobe, Yonglin Hao, Willi Meier, "Cube Attacks on Non-Blackbox Polynomials Based on Division Property" CRYPTO 2017.
  • Yosuke Todo, Takanori Isobe, Willi Meier, Kazumaro Aoki, Bin Zhang, "Fast Correlation Attack Revisited - Cryptanalysis on Full Grain-128a, Grain-128, and Grain-v1" CRYPTO 2018.
  • Yosuke Todo, Gregor Leander, Yu Sasaki, "Nonlinear Invariant Attack: Practical Attack on Full SCREAM, iSCREAM, and Midori64" Journal of Cryptology, 2019.
  • Christof Beierle, Gregor Leander, Yosuke Todo, "Improved Differential-Linear Attacks with Applications to ARX Ciphers" CRYPTO 2020.
  • Phil Hebborn, Baptiste Lambin, Gregor Leander, Yosuke Todo, "Lower Bounds on the Degree of Block Ciphers" ASIACRYPT 2020.
  • Yonglin Hao, Gregor Leander, Willi Meier, Yosuke Todo, Qingju Wang, "Modeling for Three-Subset Division Property Without Unknown Subset" Journal of Cryptology 2021.
  • Phil Hebborn, Baptiste Lambin, Gregor Leander, Yosuke Todo, "Strong and Tight Security Guarantees against Integral Distinguishers" ASIACRYPT 2021.
  • Akinori Hosoyamada, Takanori Isobe, Yosuke Todo, Kan Yasuda, "A Modular Approach to the Incompressibility of Block-Cipher-Based AEADs" ASIACRYPT 2022.
  • Yosuke Todo, Takanori Isobe, "Hybrid Code Lifting on Space-Hard Block Ciphers --Application to Yoroi and SPNbox" IACR ToSC 2022 Issue 3.
  • Federico Canale, Tim Güneysu, Gregor Leander, Jan Philipp Thoma, Yosuke Todo, Rei Ueno, "SCARF - A Low-Latency Block Cipher for Secure Cache-Randomization" USENIX Security Symposium 2023.

Invited Talks

  • Aug. 2015: SCIS/CSS Invited Talk at IWSEC 2015
  • Sep. 2016: Keynote Talk at IWSEC 2016
  • Sep. 2016: Invited Talk at ASK 2016
  • Dec. 2017: Invited Talk at ASK 2017
  • Sep. 2020: Invited Talk for best author award of IEICE Fundamental Review
  • Oct. 2020: Invited Talk at Computer Security Symposium (CSS) 2020
  • Apr. 2021: Invited Talk at TCCM-CACR.
  • Mar. 2023: Invited Talk at FSE 2023.

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