Gleeok: A Family of Low-Latency PRFs and its Applications to Authenticated Encryption.

Ravi Anand, Subhadeep Banik, Andrea Caforio, Tatsuya Ishikawa, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Mostafizar Rahman, Kosei Sakamoto

IACR Trans. Cryptogr. Hardw. Embed. Syst., 2024(2) 545-587, 2024 Peer-reviewed
Coefficient Grouping for Complex Affine Layers.

Fukang Liu, Lorenzo Grassi, Clémence Bouvier, Willi Meier, Takanori Isobe

CRYPTO, 540-572, 2023 Peer-reviewed
An Ultra-High Throughput AES-Based Authenticated Encryption Scheme for 6G: Design and Implementation.

Ravi Anand, Subhadeep Banik, Andrea Caforio, Kazuhide Fukushima, Takanori Isobe, Shinsaku Kiyomoto, Fukang Liu, Yuto Nakano, Kosei Sakamoto, Nobuyuki Takeuchi

ESORICS (1), 229-248, 2023 Peer-reviewed
Coefficient Grouping: Breaking Chaghri and More.

Fukang Liu, Ravi Anand, Libo Wang, Willi Meier, Takanori Isobe

EUROCRYPT (4), 287-317, 2023 Peer-reviewed
Analysis of RIPEMD-160: New Collision Attacks and Finding Characteristics with MILP.

Fukang Liu, Gaoli Wang, Santanu Sarkar, Ravi Anand, Willi Meier, Yingxin Li, Takanori Isobe

EUROCRYPT (4), 189-219, 2023 Peer-reviewed
Areion: Highly-Efficient Permutations and Its Applications to Hash Functions for Short Input.

Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba

IACR Trans. Cryptogr. Hardw. Embed. Syst., 2023(2) 115-154, 2023 Peer-reviewed
Algebraic Meet-in-the-Middle Attack on LowMC.

Fukang Liu, Santanu Sarkar 0001, Gaoli Wang, Willi Meier, Takanori Isobe

ASIACRYPT (1), 225-255, 2022 Peer-reviewed
Hybrid Code Lifting on Space-Hard Block Ciphers Application to Yoroi and SPNbox.

Yosuke Todo, Takanori Isobe

IACR Transactions on Symmetric Cryptology, 2022(3) 368-402, 2022 Peer-reviewed
New Cryptanalysis of ZUC-256 Initialization Using Modular Differences.

Fukang Liu, Willi Meier, Santanu Sarkar 0001, Gaoli Wang, Ryoma Ito 0001, Takanori Isobe 0001

IACR Transactions on Symmetric Cryptology, 2022(3) 152-190, 2022 Peer-reviewed
New Low-Memory Algebraic Attacks on LowMC in the Picnic Setting.

Fukang Liu, Willi Meier, Santanu Sarkar 0001, Takanori Isobe 0001

IACR Transactions on Symmetric Cryptology, 2022(3) 102-122, 2022 Peer-reviewed
The Inverse of χ and Its Applications to Rasta-Like Ciphers.

Fukang Liu, Santanu Sarkar 0001, Willi Meier, Takanori Isobe 0001

Journal of Cryptology, 35(4) 28-28, 2022 Peer-reviewed
Algebraic Attacks on Rasta and Dasta Using Low-Degree Equations.

Fukang Liu, Santanu Sarkar, Willi Meier, Takanori Isobe

ASIACRYPT 2021, 214-240, 2021 Peer-reviewed
Perfect Trees: Designing Energy-Optimal Symmetric Encryption Primitives.

Andrea Caforio, Subhadeep Banik, Yosuke Todo, Willi Meier, Takanori Isobe 0001, Fukang Liu, Bin Zhang 0003

IACR Trans. Symmetric Cryptol., 2021(4) 36-73, 2021 Peer-reviewed
Yoroi: Updatable Whitebox Cryptography.

Yuji Koike, Takanori Isobe 0001

IACR Trans. Cryptogr. Hardw. Embed. Syst., 2021(4) 587-617, 2021 Peer-reviewed
Security Analysis of SFrame.

Takanori Isobe 0001, Ryoma Ito 0001, Kazuhiko Minematsu

Computer Security – ESORICS 2021, 127-146, 2021 Peer-reviewed
Weak Keys in Reduced AEGIS and Tiaoxin.

Fukang Liu, Takanori Isobe 0001, Willi Meier, Kosei Sakamoto

IACR Cryptol. ePrint Arch., 2021 187-187, 2021 Peer-reviewed
Cryptanalysis of Full LowMC and LowMC-M with Algebraic Techniques.

Fukang Liu, Takanori Isobe, Willi Meier

Advances in Cryptology - CRYPTO 2021 - 41st Annual International Cryptology Conference, 368-401, 2021 Peer-reviewed
Weak Keys in Reduced AEGIS and Tiaoxin.

Fukang Liu, Takanori Isobe 0001, Willi Meier, Kosei Sakamoto

IACR Trans. Symmetric Cryptol., 2021(2) 104-139, 2021 Peer-reviewed
Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G.

Kosei Sakamoto, Fukang Liu, Yuto Nakano, Shinsaku Kiyomoto, Takanori Isobe 0001

IACR Trans. Symmetric Cryptol., 2021(2) 1-30, 2021 Peer-reviewed
Exploiting Weak Diffusion of Gimli: Improved Distinguishers and Preimage Attacks.

Fukang Liu, Takanori Isobe 0001, Willi Meier

IACR Trans. Symmetric Cryptol., 2021(1) 185-216, 2021 Peer-reviewed
Orthros: A Low-Latency PRF.

Subhadeep Banik, Takanori Isobe 0001, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto

IACR Trans. Symmetric Cryptol., 2021(1) 37-77, 2021 Peer-reviewed
Atom: A Stream Cipher with Double Key Filter.

Subhadeep Banik, Andrea Caforio, Takanori Isobe 0001, Fukang Liu, Willi Meier, Kosei Sakamoto, Santanu Sarkar 0001

IACR Trans. Symmetric Cryptol., 2021(1) 5-36, 2021 Peer-reviewed
Automatic Verification of Differential Characteristics: Application to Reduced Gimli.

Fukang Liu, Takanori Isobe, Willi Meier

Advances in Cryptology - CRYPTO 2020 - 40th Annual International Cryptology Conference, 219-248, 2020 Peer-reviewed
Efficient Collision Attack Frameworks for RIPEMD-160.

Fukang Liu, Christoph Dobraunig, Florian Mendel, Takanori Isobe 0001, Gaoli Wang, Zhenfu Cao

CRYPTO 2019, 117-149, 2019 Peer-reviewed

Major Research Projects

バイデザインアプローチと高解像度解析に基づく高機能共通鍵暗号技術の開拓

科学研究費助成事業, 日本学術振興会, Apr, 2024 - Mar, 2027

五十部孝典
超低消費電力セキュリティ基盤構築

JST AIP Acceleration Research, JST, Apr, 2024 - Mar, 2026
リアルタイム暗号技術とプライバシー保護への拡張

Beyond 5G シーズ創出型プログラム, NICT, Oct, 2022 - Mar, 2025

五十部孝典
５Ｇ等のための超高速・大容量に対応した共通鍵暗号方式技術（高速共通鍵暗号）

令和3年度電波資源拡大のための研究開発, 総務省, Oct, 2021 - Mar, 2024
JST 戦略的創造研究推進事業さきがけ (IoTが拓く未来)

戦略的創造研究推進事業, 国立研究開発法人科学技術振興機構, Nov, 2020 - Mar, 2024

五十部孝典

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