Takanori Isobe

223 papers A* 7A 3B 4C 1Misc 21Journal 151Unranked 36
YearRankTypeTitle / Venue / Authors
2026 J jnl
BAKSHEESH: Similar Yet Different From GIFT (and ZORRO).
IACR Commun. Cryptol.
Anubhab Baksi, Jakub Breier, Anupam Chattopadhyay, Tomas Gerlich, Sylvain Guilley, Naina Gupta, Takanori Isobe, Arpan Jati, Petr Jedlicka, Hyunjun Kim, Fukang Liu, Zdenek Martinasek, Kosei Sakamoto, Hwajeong Seo, Rentaro Shiba
2026 J jnl
EWEMrl: A White-Box Secure Cipher with Longevity.
IACR Commun. Cryptol.
Avik Chakraborti, Shibam Ghosh, Takanori Isobe, Sajani Kundu
2026 J jnl
Finding the Inverse of some Shift Invariant Transformations.
J. Cryptol.
Fukang Liu, Vaibhav Dixit, Santanu Sarkar, Willi Meier, Takanori Isobe
2026 J jnl
MSX: Lightweight Block Ciphers for Microcontrollers with High-assurance against Differential and Linear Attacks.
IACR Commun. Cryptol.
Kazuhiko Minematsu, Tomoyasu Suzaki, Mostafizar Rahman, Sahiba Suryawanshi, Takanori Isobe
2025 J jnl
AETHER: An Ultra-High Throughput and Low Energy Authenticated Encryption Scheme.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Subhadeep Banik, Andrea Caforio, Tatsuya Ishikawa, Takanori Isobe, Mostafizar Rahman, Kosei Sakamoto
2025 Misc conf
Collision Attacks on SPONGENT with Grouping Method.
SAC
Keita Toyama, Kosei Sakamoto, Takanori Isobe
2025 J jnl
Comprehensive Security Evaluation on End-to-End Encryption of Zoom Mail.
IEICE Trans. Inf. Syst.
Shogo Shiraki, Takanori Isobe
2025 J jnl
Dialga: A Family of Low-Latency Tweakable Block Ciphers Using Multiple Linear Layers.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Tatsuya Ishikawa, Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu, Kazuma Nakata, Mostafizar Rahman, Kosei Sakamoto
2025 J jnl
Differential Analysis of Encryption and Finalization Phases of AES-based AEAD Schemes.
J. Inf. Process.
Takuro Shiraya, Kosei Sakamoto, Takanori Isobe
2025 J jnl
Divide-and-Conquer SAT for Exploring Optimal Differential and Linear Characteristics and Its Applications.
IACR Trans. Symmetric Cryptol.
Kazuma Taka, Kosei Sakamoto, Ryoma Ito, Rentaro Shiba, Shion Utsumi, Takanori Isobe
2025 J jnl
EWEMrl: A White-Box Secure Cipher with Longevity.
IACR Cryptol. ePrint Arch.
Avik Chakraborti, Shibam Ghosh, Takanori Isobe, Sajani Kundu
2025 J jnl
Exploring SHA Instructions and Its Application to AES-based Schemes.
IACR Commun. Cryptol.
Takuro Shiraya, Subhadeep Banik, Tatsuya Ishikawa, Ryoma Ito, Mostafizar Rahman, Kosei Sakamoto, Atsushi Tanaka, Shion Utsumi, Takanori Isobe
2025 J jnl
Finding New Differential Characteristics on SPECK Family.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Rikuto Kurahara, Kosei Sakamoto, Takanori Isobe
2025 J jnl
Finding the Inverse of some Shift Invariant Transformations.
IACR Cryptol. ePrint Arch.
Fukang Liu, Vaibhav Dixit, Santanu Sarkar, Willi Meier, Takanori Isobe
2025 — conf
Forgery Attacks on SipHash.
ACISP (1)
Kosuke Sasaki, Rikuto Kurahara, Kosei Sakamoto, Takanori Isobe
2025 A conf
Gravity of the Situation: Security Analysis on Rocket.Chat E2EE.
ACSAC
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Takanori Isobe
2025 J jnl
Gravity of the Situation:Security Analysis on Rocket.Chat E2EE.
IACR Cryptol. ePrint Arch.
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Takanori Isobe
2025 A conf
Not in The Prophecies: Practical Attacks on Nostr.
EuroS&P
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Shogo Shiraki, Takanori Isobe
2025 J jnl
Not in The Prophecies: Practical Attacks on Nostr.
IACR Cryptol. ePrint Arch.
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Shogo Shiraki, Takanori Isobe
2025 J jnl
Parallel SAT framework to find clustering of differential characteristics and its applications.
J. Inf. Secur. Appl.
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
2025 J jnl
SAT-Based Differential Analysis of Initialization Phase of AEGIS/Tiaoxin-346/Rocca/Rocca-S.
IEICE Trans. Inf. Syst.
Takuro Shiraya, Kosei Sakamoto, Takanori Isobe
2025 J jnl
Security analysis of SFrame.
J. Inf. Secur. Appl.
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2025 — conf
Strengthening Key Scheduling of AES-256 with Minimal Software Modifications.
ACISP (1)
Shoma Kawakami, Kazuma Taka, Atsushi Tanaka, Tatsuya Ishikawa, Takanori Isobe
2025 J jnl
Towards Finding Better Differentials on Multiple-Branch-Based Structures with the SAT Method.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kazuma Taka, Tatsuya Ishikawa, Kosei Sakamoto, Takanori Isobe
2025 J jnl
Turning Multiple Key-Dependent Attacks into Universal Attacks.
IACR Cryptol. ePrint Arch.
Hosein Hadipour, Yosuke Todo, Mostafizar Rahman, Maria Eichlseder, Ravi Anand, Takanori Isobe
2024 — conf
ASURA: An Efficient Large-State Tweakable Block Cipher for ARM Environment.
INDOCRYPT (1)
Atsushi Tanaka, Rentaro Shiba, Kosei Sakamoto, Mostafizar Rahman, Takuro Shiraya, Takanori Isobe
2024 J jnl
Analysis of Atom against quantum attacks.
IET Quantum Commun.
Ravi Anand, Rimpa Nandi, Takanori Isobe
2024 Misc conf
Bit-Wise Analysis for Forgery Attacks on AES-Based AEAD Schemes.
IWSEC
Takuro Shiraya, Kosei Sakamoto, Takanori Isobe
2024 — conf
Collision Attacks on Hashing Modes of Areion.
CANS (2)
Kodai Taiyama, Kosei Sakamoto, Rentaro Shiba, Takanori Isobe
2024 — conf
Differential Distinguishing Attacks on SNOW-V, SNOW-Vi and KCipher-2.
ACISP (1)
Rikuto Kurahara, Kosei Sakamoto, Yuto Nakano, Takanori Isobe
2024 J jnl
Differential fault attack on AES-based encryption schemes: application to B5G/6G ciphers - Rocca, Rocca-S and AEGIS.
J. Cryptogr. Eng.
Ravi Anand, Takanori Isobe, Anup Kumar Kundu, Mostafizar Rahman, Sahiba Suryawanshi
2024 J jnl
Exploring the optimality of byte-wise permutations of a piccolo-type block cipher.
Inf. Process. Lett.
Shion Utsumi, Motoki Nakahashi, Kosei Sakamoto, Takanori Isobe
2024 J jnl
Gleeok: A Family of Low-Latency PRFs and its Applications to Authenticated Encryption.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Ravi Anand, Subhadeep Banik, Andrea Caforio, Tatsuya Ishikawa, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Mostafizar Rahman, Kosei Sakamoto
2024 J jnl
Improving the Security Bounds against Differential Attacks for Pholkos Family.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Nobuyuki Takeuchi, Kosei Sakamoto, Takuro Shiraya, Takanori Isobe
2024 — conf
Key Collisions on AES and Its Applications.
ASIACRYPT (7)
Kodai Taiyama, Kosei Sakamoto, Ryoma Ito, Kazuma Taka, Takanori Isobe
2024 J jnl
Key Collisions on AES and Its Applications.
IACR Cryptol. ePrint Arch.
Kodai Taiyama, Kosei Sakamoto, Ryoma Ito, Kazuma Taka, Takanori Isobe
2024 J jnl
Key Committing Attacks against AES-based AEAD Schemes.
IACR Trans. Symmetric Cryptol.
Patrick Derbez, Pierre-Alain Fouque, Takanori Isobe, Mostafizar Rahman, André Schrottenloher
2024 J jnl
Looking Further into the Security of End-to-End Encryption of SFrame.
J. Inf. Process.
Shogo Shiraki, Hayato Kimura, Takanori Isobe
2024 J jnl
On the Key-Commitment Properties of Forkcipher-based AEADs.
IACR Commun. Cryptol.
Mostafizar Rahman, Samir Kundu, Takanori Isobe
2024 — conf
Quantum Key Recovery Attacks on 4-Round Iterated Even-Mansour with Two Keys.
ISC (1)
Ravi Anand, Shibam Ghosh, Takanori Isobe, Rentaro Shiba
2024 J jnl
Quantum Key Recovery Attacks on 4-round Iterated Even-Mansour with Two Keys.
IACR Cryptol. ePrint Arch.
Ravi Anand, Shibam Ghosh, Takanori Isobe, Rentaro Shiba
2024 J jnl
Restricted near collision attack on Plantlet.
J. Cryptogr. Eng.
Satyam Kumar, Sandip Kumar Mondal, Santanu Sarkar, Takanori Isobe, Anubhab Baksi, Avishek Adhikari
2024 J jnl
Revisiting the Boomerang Attack From a Perspective of 3-Differential.
IEEE Trans. Inf. Theory
Libo Wang, Ling Song, Baofeng Wu, Mostafizar Rahman, Takanori Isobe
2024 J jnl
SAT-Based Analysis of Related-Key Impossible Distinguishers on Piccolo and (Tweakable) TWINE.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Shion Utsumi, Kosei Sakamoto, Takanori Isobe
2024 C conf
Security Analysis on End-to-End Encryption of Zoom Mail.
ISITA
Shogo Shiraki, Takanori Isobe
2023 J jnl
A Deeper Look into Deep Learning-based Output Prediction Attacks Using Weak SPN Block Ciphers.
J. Inf. Process.
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
2023 B conf
An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros.
CT-RSA
Kazuma Taka, Tatsuya Ishikawa, Kosei Sakamoto, Takanori Isobe
2023 J jnl
An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros.
IACR Cryptol. ePrint Arch.
Kazuma Taka, Tatsuya Ishikawa, Kosei Sakamoto, Takanori Isobe
2023 — conf
An Ultra-High Throughput AES-Based Authenticated Encryption Scheme for 6G: Design and Implementation.
ESORICS (1)
Ravi Anand, Subhadeep Banik, Andrea Caforio, Kazuhide Fukushima, Takanori Isobe, Shinsaku Kiyomoto, Fukang Liu, Yuto Nakano, Kosei Sakamoto, Nobuyuki Takeuchi
2023 — conf
Analysis of RIPEMD-160: New Collision Attacks and Finding Characteristics with MILP.
EUROCRYPT (4)
Fukang Liu, Gaoli Wang, Santanu Sarkar, Ravi Anand, Willi Meier, Yingxin Li, Takanori Isobe
2023 J jnl
Analysis of RIPEMD-160: New Collision Attacks and Finding Characteristics with MILP.
IACR Cryptol. ePrint Arch.
Fukang Liu, Gaoli Wang, Santanu Sarkar, Ravi Anand, Willi Meier, Yingxin Li, Takanori Isobe
2023 J jnl
Areion: Highly-Efficient Permutations and Its Applications (Extended Version).
IACR Cryptol. ePrint Arch.
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
2023 J jnl
Areion: Highly-Efficient Permutations and Its Applications to Hash Functions for Short Input.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
2023 J jnl
BAKSHEESH: Similar Yet Different From GIFT.
IACR Cryptol. ePrint Arch.
Anubhab Baksi, Jakub Breier, Anupam Chattopadhyay, Tomas Gerlich, Sylvain Guilley, Naina Gupta, Kai Hu, Takanori Isobe, Arpan Jati, Petr Jedlicka, Hyunjun Kim, Fukang Liu, Zdenek Martinasek, Kosei Sakamoto, Hwajeong Seo, Rentaro Shiba, Ritu Ranjan Shrivastwa
2023 J jnl
Bit-level evaluation of piccolo block cipher by satisfiability problem solver.
IET Inf. Secur.
Shion Utsumi, Kosei Sakamoto, Takanori Isobe
2023 — conf
Coefficient Grouping for Complex Affine Layers.
CRYPTO (3)
Fukang Liu, Lorenzo Grassi, Clémence Bouvier, Willi Meier, Takanori Isobe
2023 J jnl
Coefficient Grouping for Complex Affine Layers.
IACR Cryptol. ePrint Arch.
Fukang Liu, Lorenzo Grassi, Clémence Bouvier, Willi Meier, Takanori Isobe
2023 — conf
Coefficient Grouping: Breaking Chaghri and More.
EUROCRYPT (4)
Fukang Liu, Ravi Anand, Libo Wang, Willi Meier, Takanori Isobe
2023 J jnl
Cryptanalysis on End-to-End Encryption Schemes of Communication Tools and Its Research Trend.
J. Inf. Process.
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2023 J jnl
Cubicle: A family of space-hard ciphers for IoT.
IET Inf. Secur.
Rentaro Shiba, Ravi Anand, Kazuhiko Minematsu, Takanori Isobe
2023 J jnl
Even-Mansour Space-hard Cipher: White-box Cryptography Cipher Meets Physically Unclonable Function.
J. Inf. Process.
Takaki Asanuma, Takanori Isobe
2023 J jnl
Finding Desirable Substitution Box with SASQUATCH.
IACR Cryptol. ePrint Arch.
Manas Wadhwa, Anubhab Baksi, Kai Hu, Anupam Chattopadhyay, Takanori Isobe, Dhiman Saha
2023 Misc conf
Ghidle: Efficient Large-State Block Ciphers for Post-quantum Security.
ACISP
Motoki Nakahashi, Rentaro Shiba, Ravi Anand, Mostafizar Rahman, Kosei Sakamoto, Fukang Liu, Takanori Isobe
2023 J jnl
Key Committing Security Analysis of AEGIS.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Mostafizar Rahman
2023 J jnl
MILP-based security evaluation for AEGIS/Tiaoxin-346/Rocca.
IET Inf. Secur.
Takuro Shiraya, Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe
2023 J jnl
On Optimality of the Round Function of Rocca.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe
2023 Misc conf
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications.
SAC
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
2023 J jnl
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications.
IACR Cryptol. ePrint Arch.
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
2023 J jnl
Quantum security analysis of Rocca.
Quantum Inf. Process.
Ravi Anand, Takanori Isobe
2023 J jnl
Revisiting the Boomerang Attack from a Perspective of 3-differential.
IACR Cryptol. ePrint Arch.
Libo Wang, Ling Song, Baofeng Wu, Mostafizar Rahman, Takanori Isobe
2023 J jnl
Security Evaluation of Initialization Phases and Round Functions of Rocca and AEGIS.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe
2023 J jnl
mPoW: How to Make Proof of Work Meaningful.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takaki Asanuma, Takanori Isobe
2022 — conf
A Modular Approach to the Incompressibility of Block-Cipher-Based AEADs.
ASIACRYPT (2)
Akinori Hosoyamada, Takanori Isobe, Yosuke Todo, Kan Yasuda
2022 J jnl
A Modular Approach to the Incompressibility of Block-Cipher-Based AEADs.
IACR Cryptol. ePrint Arch.
Akinori Hosoyamada, Takanori Isobe, Yosuke Todo, Kan Yasuda
2022 J jnl
A Proof of Work Based on Key Recovery Problem of Cascade Block Ciphers with ASIC Resistance.
IEICE Trans. Inf. Syst.
Takaki Asanuma, Takanori Isobe
2022 J jnl
A Proof of Work based on Preimage Problem of Variants of SHA-3 with ASIC Resistance.
J. Inf. Process.
Takaki Asanuma, Takanori Isobe
2022 — conf
Algebraic Meet-in-the-Middle Attack on LowMC.
ASIACRYPT (1)
Fukang Liu, Santanu Sarkar, Gaoli Wang, Willi Meier, Takanori Isobe
2022 J jnl
Algebraic Meet-in-the-Middle Attack on LowMC.
IACR Cryptol. ePrint Arch.
Fukang Liu, Gaoli Wang, Willi Meier, Santanu Sarkar, Takanori Isobe
2022 J jnl
Applying Byte-Shuffling to CLEFIA-Type Structure.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kazuto Shimizu, Kosei Sakamoto, Takanori Isobe
2022 J jnl
Big Brother Is Watching You: A Closer Look At Backdoor Construction.
IACR Cryptol. ePrint Arch.
Anubhab Baksi, Arghya Bhattacharjee, Jakub Breier, Takanori Isobe, Mridul Nandi
2022 — conf
Big Brother Is Watching You: A Closer Look at Backdoor Construction.
SPACE
Anubhab Baksi, Arghya Bhattacharjee, Jakub Breier, Takanori Isobe, Mridul Nandi
2022 J jnl
Coefficient Grouping: Breaking Chaghri and More.
IACR Cryptol. ePrint Arch.
Fukang Liu, Ravi Anand, Libo Wang, Willi Meier, Takanori Isobe
2022 J jnl
Design of a Linear Layer for a Block Cipher Based on Type-2 Generalized Feistel Network with 32 Branches.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Takanori Isobe
2022 J jnl
Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi.
J. Inf. Secur. Appl.
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
2022 J jnl
Efficient constructions for large-state block ciphers based on AES New Instructions.
IET Inf. Secur.
Rentaro Shiba, Kosei Sakamoto, Takanori Isobe
2022 J jnl
Hybrid Code Lifting on Space-Hard Block Ciphers Application to Yoroi and SPNbox.
IACR Trans. Symmetric Cryptol.
Yosuke Todo, Takanori Isobe
2022 J jnl
Integral and impossible-differential attacks on the reduced-round Lesamnta-LW-BC.
IET Inf. Secur.
Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Kazuhiko Minematsu, Takanori Isobe
2022 J jnl
New Cryptanalysis of ZUC-256 Initialization Using Modular Differences.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Willi Meier, Santanu Sarkar, Gaoli Wang, Ryoma Ito, Takanori Isobe
2022 J jnl
New Low-Memory Algebraic Attacks on LowMC in the Picnic Setting.
IACR Cryptol. ePrint Arch.
Fukang Liu, Willi Meier, Santanu Sarkar, Takanori Isobe
2022 J jnl
New Low-Memory Algebraic Attacks on LowMC in the Picnic Setting.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Willi Meier, Santanu Sarkar, Takanori Isobe
2022 — conf
Output Prediction Attacks on Block Ciphers Using Deep Learning.
ACNS Workshops
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
2022 Misc ed.
Progress in Cryptology - INDOCRYPT 2022 - 23rd International Conference on Cryptology in India, Kolkata, India, December 11-14, 2022, Proceedings
INDOCRYPT
Takanori Isobe, Santanu Sarkar
2022 J jnl
Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G (Full version).
IACR Cryptol. ePrint Arch.
Kosei Sakamoto, Fukang Liu, Yuto Nakano, Shinsaku Kiyomoto, Takanori Isobe
2022 J jnl
The Inverse of χ and Its Applications to Rasta-Like Ciphers.
J. Cryptol.
Fukang Liu, Santanu Sarkar, Willi Meier, Takanori Isobe
2022 J jnl
The Inverse of χ and Its Applications to Rasta-like Ciphers.
IACR Cryptol. ePrint Arch.
Fukang Liu, Santanu Sarkar, Willi Meier, Takanori Isobe
2021 J jnl
A Simple Algebraic Attack on 3-Round LowMC.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2021 — conf
Algebraic Attacks on Rasta and Dasta Using Low-Degree Equations.
ASIACRYPT (1)
Fukang Liu, Santanu Sarkar, Willi Meier, Takanori Isobe
2021 J jnl
Algebraic Attacks on Rasta and Dasta Using Low-Degree Equations.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2021 Misc conf
Algebraic Attacks on Round-Reduced Keccak.
ACISP
Fukang Liu, Takanori Isobe, Willi Meier, Zhonghao Yang
2021 J jnl
Atom: A Stream Cipher with Double Key Filter.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Andrea Caforio, Takanori Isobe, Fukang Liu, Willi Meier, Kosei Sakamoto, Santanu Sarkar
2021 J jnl
Atom: A Stream Cipher with Double Key Filter.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Andrea Caforio, Takanori Isobe, Fukang Liu, Willi Meier, Kosei Sakamoto, Santanu Sarkar
2021 J jnl
Bit-wise Cryptanalysis on AND-RX Permutation Friet-PC.
IACR Cryptol. ePrint Arch.
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
2021 J jnl
Bit-wise cryptanalysis on AND-RX permutation Friet-PC.
J. Inf. Secur. Appl.
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
2021 — conf
Cryptanalysis of Full LowMC and LowMC-M with Algebraic Techniques.
CRYPTO (3)
Fukang Liu, Takanori Isobe, Willi Meier
2021 Misc conf
Differential Fault Attack on Rocca.
ICISC
Ravi Anand, Takanori Isobe
2021 Misc conf
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V.
ACISP
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
2021 J jnl
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V.
IACR Cryptol. ePrint Arch.
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
2021 J jnl
Exploiting Weak Diffusion of Gimli: Improved Distinguishers and Preimage Attacks.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Takanori Isobe, Willi Meier
2021 J jnl
Finding Practical Distinguishers for ZUC-256 Using Modular Differences.
IACR Cryptol. ePrint Arch.
Fukang Liu, Willi Meier, Santanu Sarkar, Gaoli Wang, Ryoma Ito, Takanori Isobe
2021 J jnl
Further Results on Efficient Implementations of Block Cipher Linear Layers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Subhadeep Banik, Yuki Funabiki, Takanori Isobe
2021 J jnl
MILP-Aided Security Evaluation of Differential Attacks on KCipher-2.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Jin Hoki, Kosei Sakamoto, Fukang Liu, Kazuhiko Minematsu, Takanori Isobe
2021 J jnl
Orthros: A Low-Latency PRF.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto
2021 J jnl
Orthros: A Low-Latency PRF.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto
2021 J jnl
Output Prediction Attacks on SPN Block Ciphers using Deep Learning.
IACR Cryptol. ePrint Arch.
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
2021 J jnl
Perfect Trees: Designing Energy-Optimal Symmetric Encryption Primitives.
IACR Cryptol. ePrint Arch.
Andrea Caforio, Subhadeep Banik, Yosuke Todo, Willi Meier, Takanori Isobe, Fukang Liu, Bin Zhang
2021 J jnl
Perfect Trees: Designing Energy-Optimal Symmetric Encryption Primitives.
IACR Trans. Symmetric Cryptol.
Andrea Caforio, Subhadeep Banik, Yosuke Todo, Willi Meier, Takanori Isobe, Fukang Liu, Bin Zhang
2021 J jnl
Practical Integral Distinguishers on SNOW 3G and KCipher-2.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Jin Hoki, Kosei Sakamoto, Kazuhiko Minematsu, Takanori Isobe
2021 J jnl
Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G.
IACR Trans. Symmetric Cryptol.
Kosei Sakamoto, Fukang Liu, Yuto Nakano, Shinsaku Kiyomoto, Takanori Isobe
2021 Misc conf
Security Analysis of End-to-End Encryption for Zoom Meetings.
ACISP
Takanori Isobe, Ryoma Ito
2021 J jnl
Security Analysis of End-to-End Encryption for Zoom Meetings.
IEEE Access
Takanori Isobe, Ryoma Ito
2021 J jnl
Security Analysis of End-to-End Encryption for Zoom Meetings.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Ryoma Ito
2021 — conf
Security Analysis of SFrame.
ESORICS (2)
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2021 J jnl
Security Analysis of SFrame.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2021 J jnl
Three Input Exclusive-OR Gate Support For Boyar-Peralta's Algorithm (Extended Version).
IACR Cryptol. ePrint Arch.
Anubhab Baksi, Vishnu Asutosh Dasu, Banashri Karmakar, Anupam Chattopadhyay, Takanori Isobe
2021 Misc conf
Three Input Exclusive-OR Gate Support for Boyar-Peralta's Algorithm.
INDOCRYPT
Anubhab Baksi, Vishnu Asutosh Dasu, Banashri Karmakar, Anupam Chattopadhyay, Takanori Isobe
2021 J jnl
Virtual Vault: A Practical Leakage Resilient Scheme Using Space-Hard Ciphers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuji Koike, Takuya Hayashi, Jun Kurihara, Takanori Isobe
2021 J jnl
Weak Keys in Reduced AEGIS and Tiaoxin.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier, Kosei Sakamoto
2021 J jnl
Weak Keys in Reduced AEGIS and Tiaoxin.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Takanori Isobe, Willi Meier, Kosei Sakamoto
2021 J jnl
Yoroi: Updatable Whitebox Cryptography.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Yuji Koike, Takanori Isobe
2020 J jnl
ACE in Chains : How Risky is CBC Encryption of Binary Executable Files ?
IACR Cryptol. ePrint Arch.
Rintaro Fujita, Takanori Isobe, Kazuhiko Minematsu
2020 — conf
ACE in Chains: How Risky Is CBC Encryption of Binary Executable Files?
ACNS (1)
Rintaro Fujita, Takanori Isobe, Kazuhiko Minematsu
2020 J jnl
Algebraic Attacks on Round-Reduced Keccak/Xoodoo.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier, Zhonghao Yang
2020 — conf
Automatic Verification of Differential Characteristics: Application to Reduced Gimli.
CRYPTO (3)
Fukang Liu, Takanori Isobe, Willi Meier
2020 J jnl
Automatic Verification of Differential Characteristics: Application to Reduced Gimli.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2020 J jnl
Cryptanalysis of Full LowMC and LowMC-M with Algebraic Techniques.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2020 J jnl
Exploiting Weak Diffusion of Gimli: A Full-Round Distinguisher and Reduced-Round Preimage Attacks.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2020 Misc conf
Galaxy: A Family of Stream-Cipher-Based Space-Hard Ciphers.
ACISP
Yuji Koike, Kosei Sakamoto, Takuya Hayashi, Takanori Isobe
2020 J jnl
Key-Recovery Security of Single-Key Even-Mansour Ciphers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takanori Isobe, Kyoji Shibutani
2020 J jnl
Preimage Attacks on Reduced Troika with Divide-and-Conquer Methods.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Fukang Liu, Takanori Isobe
2020 J jnl
Security Analysis and Countermeasures of an End-to-End Encryption Scheme of LINE.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takanori Isobe, Kazuhiko Minematsu
2020 J jnl
Security of Related-Key Differential Attacks on TWINE, Revisited.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Yuki Funabiki, Takanori Isobe
2020 J jnl
Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Yuki Funabiki, Andrey Bogdanov, Sumio Morioka, Takanori Isobe
2020 Misc conf
WARP : Revisiting GFN for Lightweight 128-Bit Block Cipher.
SAC
Subhadeep Banik, Zhenzhen Bao, Takanori Isobe, Hiroyasu Kubo, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto, Nao Shibata, Maki Shigeri
2020 J jnl
WARP : Revisiting GFN for Lightweight 128-bit Block Cipher.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Zhenzhen Bao, Takanori Isobe, Hiroyasu Kubo, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto, Nao Shibata, Maki Shigeri
2019 J jnl
Cryptanalysis of Plantlet.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Khashayar Barooti, Takanori Isobe
2019 J jnl
Cryptanalysis of Plantlet.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Khashayar Barooti, Takanori Isobe
2019 J jnl
Cryptanalysis of Subterranean-SAE.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2019 J jnl
Cube-Based Cryptanalysis of Subterranean-SAE.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Takanori Isobe, Willi Meier
2019 — conf
Efficient Collision Attack Frameworks for RIPEMD-160.
CRYPTO (2)
Fukang Liu, Christoph Dobraunig, Florian Mendel, Takanori Isobe, Gaoli Wang, Zhenfu Cao
2019 J jnl
Improved Division Property Based Cube Attacks Exploiting Algebraic Properties of Superpoly.
IEEE Trans. Computers
Yonglin Hao, Takanori Isobe, Lin Jiao, Chaoyun Li, Willi Meier, Yosuke Todo, Qingju Wang
2019 J jnl
Improved Integral Attack on HIGHT.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuki Funabiki, Yosuke Todo, Takanori Isobe, Masakatu Morii
2019 Misc conf
Iterative Differential Characteristic of TRIFLE-BC.
SAC
Fukang Liu, Takanori Isobe
2019 J jnl
Iterative Differential Characteristic of TRIFLE-BC.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe
2019 J jnl
Meet-in-the-Middle Key Recovery Attacks on a Single-Key Two-Round Even-Mansour Cipher.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takanori Isobe, Kyoji Shibutani
2019 Misc conf
More Results on Shortest Linear Programs.
IWSEC
Subhadeep Banik, Yuki Funabiki, Takanori Isobe
2019 J jnl
More results on Shortest Linear Programs.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Yuki Funabiki, Takanori Isobe
2019 — conf
Neural-Network-Based Pseudo-Random Number Generator Evaluation Tool for Stream Ciphers.
CANDAR Workshops
Hayato Kimura, Takanori Isobe, Toshihiro Ohigashi
2019 J jnl
New Semi-Free-Start Collision Attack Framework for Reduced RIPEMD-160.
IACR Cryptol. ePrint Arch.
Fukang Liu, Christoph Dobraunig, Florian Mendel, Takanori Isobe, Gaoli Wang, Zhenfu Cao
2019 J jnl
New Semi-Free-Start Collision Attack Framework for Reduced RIPEMD-160.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Christoph Dobraunig, Florian Mendel, Takanori Isobe, Gaoli Wang, Zhenfu Cao
2019 Misc conf
Plaintext Recovery Attacks Against XTS Beyond Collisions.
SAC
Takanori Isobe, Kazuhiko Minematsu
2019 J jnl
Plaintext Recovery Attacks against XTS Beyond Collisions.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Kazuhiko Minematsu
2019 Misc conf
Preimage Attacks on Reduced Troika with Divide-and-Conquer Methods.
IWSEC
Fukang Liu, Takanori Isobe
2019 J jnl
Preimage Attacks on Reduced Troika with Divide-and-Conquer Methods.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe
2019 J jnl
Preimages and Collisions for Up to 5-Round Gimli-Hash Using Divide-and-Conquer Methods.
IACR Cryptol. ePrint Arch.
Fukang Liu, Takanori Isobe, Willi Meier
2019 Misc conf
Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure.
IWSEC
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Yuki Funabiki, Andrey Bogdanov, Sumio Morioka, Takanori Isobe
2018 — conf
Breaking Message Integrity of an End-to-End Encryption Scheme of LINE.
ESORICS (2)
Takanori Isobe, Kazuhiko Minematsu
2018 J jnl
Breaking Message Integrity of an End-to-End Encryption Scheme of LINE.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Kazuhiko Minematsu
2018 J jnl
Cryptanalysis of Reduced Kreyvium.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuhei Watanabe, Takanori Isobe, Masakatu Morii
2018 J jnl
Cube Attacks on Non-Blackbox Polynomials Based on Division Property.
IEEE Trans. Computers
Yosuke Todo, Takanori Isobe, Yonglin Hao, Willi Meier
2018 — conf
Fast Correlation Attack Revisited - Cryptanalysis on Full Grain-128a, Grain-128, and Grain-v1.
CRYPTO (2)
Yosuke Todo, Takanori Isobe, Willi Meier, Kazumaro Aoki, Bin Zhang
2018 J jnl
Fast Correlation Attack Revisited -Cryptanalysis on Full Grain-128a, Grain-128, and Grain-v1.
IACR Cryptol. ePrint Arch.
Yosuke Todo, Takanori Isobe, Willi Meier, Kazumaro Aoki, Bin Zhang
2018 — conf
Improved Division Property Based Cube Attacks Exploiting Algebraic Properties of Superpoly.
CRYPTO (1)
Qingju Wang, Yonglin Hao, Yosuke Todo, Chaoyun Li, Takanori Isobe, Willi Meier
2018 — conf
Inverse gating for low energy encryption.
HOST
Subhadeep Banik, Andrey Bogdanov, Francesco Regazzoni, Takanori Isobe, Harunaga Hiwatari, Toru Akishita
2018 J jnl
On Design of Robust Lightweight Stream Cipher with Short Internal State.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Subhadeep Banik, Takanori Isobe, Masakatu Morii
2018 B conf
Several MILP-Aided Attacks Against SNOW 2.0.
CANS
Yuki Funabiki, Yosuke Todo, Takanori Isobe, Masakatu Morii
2018 J jnl
ShiftRows Alternatives for AES-like Ciphers and Optimal Cell Permutations for Midori and Skinny.
IACR Trans. Symmetric Cryptol.
Gianira N. Alfarano, Christof Beierle, Takanori Isobe, Stefan Kölbl, Gregor Leander
2018 J jnl
Theoretical Understanding of Some Conditional and Joint Biases in RC4 Stream Cipher.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Sonu Jha, Subhadeep Banik, Takanori Isobe, Toshihiro Ohigashi, Santanu Sarkar
2018 J jnl
Towards Low Energy Stream Ciphers.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Vasily Mikhalev, Frederik Armknecht, Takanori Isobe, Willi Meier, Andrey Bogdanov, Yuhei Watanabe, Francesco Regazzoni
2017 J jnl
Analysis and Improvements of the Full Spritz Stream Cipher.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Subhadeep Banik, Takanori Isobe, Masakatu Morii
2017 J jnl
Analysis of Software Countermeasures for Whitebox Encryption.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Andrey Bogdanov, Takanori Isobe, Martin Bjerregaard Jepsen
2017 J jnl
Analysis of Software Countermeasures for Whitebox Encryption.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Andrey Bogdanov, Takanori Isobe, Martin Bjerregaard Jepsen
2017 — conf
Conditional Differential Cryptanalysis for Kreyvium.
ACISP (1)
Yuhei Watanabe, Takanori Isobe, Masakatu Morii
2017 — conf
Cube Attacks on Non-Blackbox Polynomials Based on Division Property.
CRYPTO (3)
Yosuke Todo, Takanori Isobe, Yonglin Hao, Willi Meier
2017 J jnl
Cube Attacks on Non-Blackbox Polynomials Based on Division Property.
IACR Cryptol. ePrint Arch.
Yosuke Todo, Takanori Isobe, Yonglin Hao, Willi Meier
2017 J jnl
How to Efficiently Exploit Different Types of Biases for Plaintext Recovery of RC4.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yuhei Watanabe, Takanori Isobe, Toshihiro Ohigashi, Masakatu Morii
2017 J jnl
Improved Division Property Based Cube Attacks Exploiting Algebraic Properties of Superpoly.
IACR Cryptol. ePrint Arch.
Qingju Wang, Yonglin Hao, Yosuke Todo, Chaoyun Li, Takanori Isobe, Willi Meier
2017 — conf
Improved Integral Attack on HIGHT.
ACISP (1)
Yuki Funabiki, Yosuke Todo, Takanori Isobe, Masakatu Morii
2017 — conf
Low-Data Complexity Attacks on Camellia.
ATIS
Takeru Koie, Takanori Isobe, Yosuke Todo, Masakatu Morii
2017 — conf
New Key Recovery Attacks on Minimal Two-Round Even-Mansour Ciphers.
ASIACRYPT (1)
Takanori Isobe, Kyoji Shibutani
2017 J jnl
New Key Recovery Attacks on Minimal Two-Round Even-Mansour Ciphers.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Kyoji Shibutani
2017 J jnl
Some cryptanalytic results on Lizard.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Takanori Isobe
2017 J jnl
Some cryptanalytic results on Lizard.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Takanori Isobe, Tingting Cui, Jian Guo
2016 A* conf
Cryptanalysis of the Full Spritz Stream Cipher.
FSE
Subhadeep Banik, Takanori Isobe
2016 J jnl
Cryptanalysis of the Full Spritz Stream Cipher.
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Takanori Isobe
2016 — conf
Round gating for low energy block ciphers.
HOST
Subhadeep Banik, Andrey Bogdanov, Francesco Regazzoni, Takanori Isobe, Harunaga Hiwatari, Toru Akishita
2016 Misc conf
Some Proofs of Joint Distributions of Keystream Biases in RC4.
INDOCRYPT
Sonu Jha, Subhadeep Banik, Takanori Isobe, Toshihiro Ohigashi
2016 — conf
Towards Practical Whitebox Cryptography: Optimizing Efficiency and Space Hardness.
ASIACRYPT (1)
Andrey Bogdanov, Takanori Isobe, Elmar Tischhauser
2015 J jnl
Full Plaintext Recovery Attacks on RC4 Using Multiple Biases.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Toshihiro Ohigashi, Takanori Isobe, Yuhei Watanabe, Masakatu Morii
2015 J jnl
Generic Key Recovery Attack on Feistel Scheme.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Kyoji Shibutani
2015 — conf
How Secure is AES Under Leakage.
ASIACRYPT (2)
Andrey Bogdanov, Takanori Isobe
2015 J jnl
Improved All-Subkeys Recovery Attacks on FOX, KATAN and SHACAL-2 Block Ciphers.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Kyoji Shibutani
2015 J jnl
Midori: A Block Cipher for Low Energy (Extended Version).
IACR Cryptol. ePrint Arch.
Subhadeep Banik, Andrey Bogdanov, Takanori Isobe, Kyoji Shibutani, Harunaga Hiwatari, Toru Akishita, Francesco Regazzoni
2015 — conf
Midori: A Block Cipher for Low Energy.
ASIACRYPT (2)
Subhadeep Banik, Andrey Bogdanov, Takanori Isobe, Kyoji Shibutani, Harunaga Hiwatari, Toru Akishita, Francesco Regazzoni
2015 A* conf
White-Box Cryptography Revisited: Space-Hard Ciphers.
CCS
Andrey Bogdanov, Takanori Isobe
2014 J jnl
Comprehensive Analysis of Initial Keystream Biases of RC4.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takanori Isobe, Toshihiro Ohigashi, Yuhei Watanabe, Masakatu Morii
2014 J jnl
Expanding Weak-key Space of RC4.
J. Inf. Process.
Atsushi Nagao, Toshihiro Ohigashi, Takanori Isobe, Masakatu Morii
2014 A* conf
Improved All-Subkeys Recovery Attacks on FOX, KATAN and SHACAL-2 Block Ciphers.
FSE
Takanori Isobe, Kyoji Shibutani
2013 J jnl
A Single-Key Attack on the Full GOST Block Cipher.
J. Cryptol.
Takanori Isobe
2013 A* conf
Full Plaintext Recovery Attack on Broadcast RC4.
FSE
Takanori Isobe, Toshihiro Ohigashi, Yuhei Watanabe, Masakatu Morii
2013 — conf
Generic Key Recovery Attack on Feistel Scheme.
ASIACRYPT (1)
Takanori Isobe, Kyoji Shibutani
2013 B conf
How to Recover Any Byte of Plaintext on RC4.
Selected Areas in Cryptography
Toshihiro Ohigashi, Takanori Isobe, Yuhei Watanabe, Masakatu Morii
2013 Misc conf
Related-Key Boomerang Attacks on KATAN32/48/64.
ACISP
Takanori Isobe, Yu Sasaki, Jiageng Chen
2013 J jnl
Slide Property of RAKAPOSHI and Its Application to Key Recovery Attack.
Inf. Media Technol.
Takanori Isobe, Toshihiro Ohigashi, Masakatu Morii
2013 J jnl
Slide Property of RAKAPOSHI and Its Application to Key Recovery Attack.
J. Inf. Process.
Takanori Isobe, Toshihiro Ohigashi, Masakatu Morii
2012 B conf
All Subkeys Recovery Attack on Block Ciphers: Extending Meet-in-the-Middle Approach.
Selected Areas in Cryptography
Takanori Isobe, Kyoji Shibutani
2012 A* conf
Converting Meet-In-The-Middle Preimage Attack into Pseudo Collision Attack: Application to SHA-2.
FSE
Ji Li, Takanori Isobe, Kyoji Shibutani
2012 Misc conf
Security Analysis of the Lightweight Block Ciphers XTEA, LED and Piccolo.
ACISP
Takanori Isobe, Kyoji Shibutani
2012 Misc conf
Slide Cryptanalysis of Lightweight Stream Cipher RAKAPOSHI.
IWSEC
Takanori Isobe, Toshihiro Ohigashi, Masakatu Morii
2011 A* conf
A Single-Key Attack on the Full GOST Block Cipher.
FSE
Takanori Isobe
2011 A conf
Piccolo: An Ultra-Lightweight Blockcipher.
CHES
Kyoji Shibutani, Takanori Isobe, Harunaga Hiwatari, Atsushi Mitsuda, Toru Akishita, Taizo Shirai
2010 J jnl
Low-weight Pseudo Collision Attack on Shabal and Preimage Attack on Reduced Shabal-512.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Taizo Shirai
2009 J jnl
A Chosen-IV Key Recovery Attack on Py and Pypy.
IEICE Trans. Inf. Syst.
Takanori Isobe, Toshihiro Ohigashi, Hidenori Kuwakado, Masakatu Morii
2009 A* conf
Preimage Attacks on Reduced Tiger and SHA-2.
FSE
Takanori Isobe, Kyoji Shibutani