Galaxy: A Family of Stream-Cipher-Based Space-Hard Ciphers. - Yuji Koike; Kosei Sakamoto; Takuya Hayashi 001; Takanori Isobe 001 (ACISP, 2020)

WARP : Revisiting GFN for Lightweight 128-bit Block Cipher. - Subhadeep Banik; Zhenzhen Bao; Takanori Isobe 001; Hiroyasu Kubo; Fukang Liu; Kazuhiko Minematsu; Kosei Sakamoto; Nao Shibata; Maki Shigeri (IACR Cryptol. ePrint Arch., 2020)

Security of Related-Key Differential Attacks on TWINE, Revisited. - Kosei Sakamoto; Kazuhiko Minematsu; Nao Shibata; Maki Shigeri; Hiroyasu Kubo; Yuki Funabiki; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure. - Kosei Sakamoto; Kazuhiko Minematsu; Nao Shibata; Maki Shigeri; Hiroyasu Kubo; Yuki Funabiki; Andrey Bogdanov; Sumio Morioka; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2020)

Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V. - Jin Hoki; Takanori Isobe 001; Ryoma Ito 001; Fukang Liu; Kosei Sakamoto (IACR Cryptol. ePrint Arch., 2021)

MILP-Aided Security Evaluation of Differential Attacks on KCipher-2. - Jin Hoki; Kosei Sakamoto; Fukang Liu; Kazuhiko Minematsu; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Practical Integral Distinguishers on SNOW 3G and KCipher-2. - Jin Hoki; Kosei Sakamoto; Kazuhiko Minematsu; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Bit-wise cryptanalysis on AND-RX permutation Friet-PC. - Ryoma Ito 001; Rentaro Shiba; Kosei Sakamoto; Fukang Liu; Takanori Isobe 001 (J. Inf. Secur. Appl., 2021)

Atom: A Stream Cipher with Double Key Filter. - Subhadeep Banik; Andrea Caforio; Takanori Isobe 001; Fukang Liu; Willi Meier; Kosei Sakamoto; Santanu Sarkar 001 (IACR Trans. Symmetric Cryptol., 2021)

Orthros: A Low-Latency PRF. - Subhadeep Banik; Takanori Isobe 001; Fukang Liu; Kazuhiko Minematsu; Kosei Sakamoto (IACR Trans. Symmetric Cryptol., 2021)

Weak Keys in Reduced AEGIS and Tiaoxin. - Fukang Liu; Takanori Isobe 001; Willi Meier; Kosei Sakamoto (IACR Trans. Symmetric Cryptol., 2021)

Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G. - Kosei Sakamoto; Fukang Liu; Yuto Nakano; Shinsaku Kiyomoto; Takanori Isobe 001 (IACR Trans. Symmetric Cryptol., 2021)

Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G (Full version). - Kosei Sakamoto; Fukang Liu; Yuto Nakano; Shinsaku Kiyomoto; Takanori Isobe 001 (IACR Cryptol. ePrint Arch., 2022)

Design of a Linear Layer for a Block Cipher Based on Type-2 Generalized Feistel Network with 32 Branches. - Kosei Sakamoto; Kazuhiko Minematsu; Nao Shibata; Maki Shigeri; Hiroyasu Kubo; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

Applying Byte-Shuffling to CLEFIA-Type Structure. - Kazuto Shimizu; Kosei Sakamoto; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

Efficient constructions for large-state block ciphers based on AES New Instructions. - Rentaro Shiba; Kosei Sakamoto; Takanori Isobe 001 (IET Inf. Secur., 2022)

Integral and impossible-differential attacks on the reduced-round Lesamnta-LW-BC. - Rentaro Shiba; Kosei Sakamoto; Fukang Liu; Kazuhiko Minematsu; Takanori Isobe 001 (IET Inf. Secur., 2022)

Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi. - Jin Hoki; Takanori Isobe 001; Ryoma Ito 001; Fukang Liu; Kosei Sakamoto (J. Inf. Secur. Appl., 2022)

Ghidle: Efficient Large-State Block Ciphers for Post-quantum Security. - Motoki Nakahashi; Rentaro Shiba; Ravi Anand; Mostafizar Rahman; Kosei Sakamoto; Fukang Liu; Takanori Isobe 001 (ACISP, 2023)

An Ultra-High Throughput AES-Based Authenticated Encryption Scheme for 6G: Design and Implementation. - Ravi Anand; Subhadeep Banik; Andrea Caforio; Kazuhide Fukushima; Takanori Isobe 001; Shinsaku Kiyomoto; Fukang Liu; Yuto Nakano; Kosei Sakamoto; Nobuyuki Takeuchi (ESORICS (1), 2023)

BAKSHEESH: Similar Yet Different From GIFT. - Anubhab Baksi; Jakub Breier; Anupam Chattopadhyay; Tomas Gerlich; Sylvain Guilley; Naina Gupta 001; Kai Hu; Takanori Isobe 001; Arpan Jati; Petr Jedlicka; Hyunjun Kim; Fukang Liu; et al. (IACR Cryptol. ePrint Arch., 2023)

Areion: Highly-Efficient Permutations and Its Applications (Extended Version). - Takanori Isobe 001; Ryoma Ito 001; Fukang Liu; Kazuhiko Minematsu; Motoki Nakahashi; Kosei Sakamoto; Rentaro Shiba (IACR Cryptol. ePrint Arch., 2023)

Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications. - Kosei Sakamoto; Ryoma Ito 001; Takanori Isobe 001 (IACR Cryptol. ePrint Arch., 2023)

An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros. - Kazuma Taka; Tatsuya Ishikawa; Kosei Sakamoto; Takanori Isobe 001 (IACR Cryptol. ePrint Arch., 2023)

On Optimality of the Round Function of Rocca. - Nobuyuki Takeuchi; Kosei Sakamoto; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Areion: Highly-Efficient Permutations and Its Applications to Hash Functions for Short Input. - Takanori Isobe 001; Ryoma Ito 001; Fukang Liu; Kazuhiko Minematsu; Motoki Nakahashi; Kosei Sakamoto; Rentaro Shiba (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2023)

Security Evaluation of Initialization Phases and Round Functions of Rocca and AEGIS. - Nobuyuki Takeuchi; Kosei Sakamoto; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

MILP-based security evaluation for AEGIS/Tiaoxin-346/Rocca. - Takuro Shiraya; Nobuyuki Takeuchi; Kosei Sakamoto; Takanori Isobe 001 (IET Inf. Secur., 2023)

Bit-level evaluation of piccolo block cipher by satisfiability problem solver. - Shion Utsumi; Kosei Sakamoto; Takanori Isobe 001 (IET Inf. Secur., 2023)

Differential Distinguishing Attacks on SNOW-V, SNOW-Vi and KCipher-2. - Rikuto Kurahara; Kosei Sakamoto; Yuto Nakano; Takanori Isobe 001 (ACISP (1), 2024)

Collision Attacks on Hashing Modes of Areion. - Kodai Taiyama; Kosei Sakamoto; Rentaro Shiba; Takanori Isobe 001 (CANS (2), 2024)

ASURA: An Efficient Large-State Tweakable Block Cipher for ARM Environment. - Atsushi Tanaka; Rentaro Shiba; Kosei Sakamoto; Mostafizar Rahman; Takuro Shiraya; Takanori Isobe 001 (INDOCRYPT (1), 2024)

Bit-Wise Analysis for Forgery Attacks on AES-Based AEAD Schemes. - Takuro Shiraya; Kosei Sakamoto; Takanori Isobe 001 (IWSEC, 2024)

Key Collisions on AES and Its Applications. - Kodai Taiyama; Kosei Sakamoto; Ryoma Ito 001; Kazuma Taka; Takanori Isobe 001 (IACR Cryptol. ePrint Arch., 2024)

Improving the Security Bounds against Differential Attacks for Pholkos Family. - Nobuyuki Takeuchi; Kosei Sakamoto; Takuro Shiraya; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

SAT-Based Analysis of Related-Key Impossible Distinguishers on Piccolo and (Tweakable) TWINE. - Shion Utsumi; Kosei Sakamoto; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

Gleeok: A Family of Low-Latency PRFs and its Applications to Authenticated Encryption. - Ravi Anand; Subhadeep Banik; Andrea Caforio; Tatsuya Ishikawa; Takanori Isobe 001; Fukang Liu; Kazuhiko Minematsu; Mostafizar Rahman; Kosei Sakamoto (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2024)

Exploring the optimality of byte-wise permutations of a piccolo-type block cipher. - Shion Utsumi; Motoki Nakahashi; Kosei Sakamoto; Takanori Isobe 001 (Inf. Process. Lett., 2024)

Forgery Attacks on SipHash. - Kosuke Sasaki; Rikuto Kurahara; Kosei Sakamoto; Takanori Isobe 001 (ACISP (1), 2025)

Finding New Differential Characteristics on SPECK Family. - Rikuto Kurahara; Kosei Sakamoto; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2025)

Towards Finding Better Differentials on Multiple-Branch-Based Structures with the SAT Method. - Kazuma Taka; Tatsuya Ishikawa; Kosei Sakamoto; Takanori Isobe 001 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2025)

AETHER: An Ultra-High Throughput and Low Energy Authenticated Encryption Scheme. - Subhadeep Banik; Andrea Caforio; Tatsuya Ishikawa; Takanori Isobe 001; Mostafizar Rahman; Kosei Sakamoto (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2025)