Kosei Sakamoto

Publication Activity (10 Years)

Years Active: 2019-2024
Publications (10 Years): 43

Top Topics

Malicious Attacks

High Throughput

Top Venues

IACR Cryptol. ePrint Arch.

IEICE Trans. Fundam. Electron. Commun. Comput. Sci.

IET Inf. Secur.

IACR Trans. Symmetric Cryptol.

Publications

Shion Utsumi, Motoki Nakahashi, Kosei Sakamoto, Takanori Isobe
Exploring the optimality of byte-wise permutations of a piccolo-type block cipher. Inf. Process. Lett. 184 (2024)
Nobuyuki Takeuchi, Kosei Sakamoto, Takuro Shiraya, Takanori Isobe
Improving the Security Bounds against Differential Attacks for Pholkos Family. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 107 (8) (2024)
Ravi Anand, Subhadeep Banik, Andrea Caforio, Tatsuya Ishikawa, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Mostafizar Rahman, Kosei Sakamoto
Gleeok: A Family of Low-Latency PRFs and its Applications to Authenticated Encryption. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2024 (2) (2024)
Rikuto Kurahara, Kosei Sakamoto, Yuto Nakano, Takanori Isobe
Differential Distinguishing Attacks on SNOW-V, SNOW-Vi and KCipher-2. ACISP (1) (2024)
Shion Utsumi, Kosei Sakamoto, Takanori Isobe
SAT-Based Analysis of Related-Key Impossible Distinguishers on Piccolo and (Tweakable) TWINE. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 107 (8) (2024)
Shion Utsumi, Kosei Sakamoto, Takanori Isobe
Bit-level evaluation of piccolo block cipher by satisfiability problem solver. IET Inf. Secur. 17 (4) (2023)
Motoki Nakahashi, Rentaro Shiba, Ravi Anand, Mostafizar Rahman, Kosei Sakamoto, Fukang Liu, Takanori Isobe
Ghidle: Efficient Large-State Block Ciphers for Post-quantum Security. ACISP (2023)
Ravi Anand, Subhadeep Banik, Andrea Caforio, Kazuhide Fukushima, Takanori Isobe, Shinsaku Kiyomoto, Fukang Liu, Yuto Nakano, Kosei Sakamoto, Nobuyuki Takeuchi
An Ultra-High Throughput AES-Based Authenticated Encryption Scheme for 6G: Design and Implementation. ESORICS (1) (2023)
Kazuma Taka, Tatsuya Ishikawa, Kosei Sakamoto, Takanori Isobe
An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros. CT-RSA (2023)
Kazuma Taka, Tatusya Ishikawa, Kosei Sakamoto, Takanori Isobe
An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros. IACR Cryptol. ePrint Arch. 2023 (2023)
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications. IACR Cryptol. ePrint Arch. 2023 (2023)
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
Areion: Highly-Efficient Permutations and Its Applications (Extended Version). IACR Cryptol. ePrint Arch. 2023 (2023)
Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe
On Optimality of the Round Function of Rocca. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 106 (1) (2023)
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications. SAC (2023)
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
BAKSHEESH: Similar Yet Different From GIFT. IACR Cryptol. ePrint Arch. 2023 (2023)
Takuro Shiraya, Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe
MILP-based security evaluation for AEGIS/Tiaoxin-346/Rocca. IET Inf. Secur. 17 (3) (2023)
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
Areion: Highly-Efficient Permutations and Its Applications to Hash Functions for Short Input. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2023 (2) (2023)
Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe
Security Evaluation of Initialization Phases and Round Functions of Rocca and AEGIS. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 106 (3) (2023)
Kosei Sakamoto, Fukang Liu, Yuto Nakano, Shinsaku Kiyomoto, Takanori Isobe
Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G (Full version). IACR Cryptol. ePrint Arch. 2022 (2022)
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi. J. Inf. Secur. Appl. 65 (2022)
Rentaro Shiba, Kosei Sakamoto, Takanori Isobe
Efficient constructions for large-state block ciphers based on AES New Instructions. IET Inf. Secur. 16 (3) (2022)
Kazuto Shimizu, Kosei Sakamoto, Takanori Isobe
Applying Byte-Shuffling to CLEFIA-Type Structure. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (3) (2022)
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Takanori Isobe
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. (3) (2022)
Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Kazuhiko Minematsu, Takanori Isobe
Integral and impossible-differential attacks on the reduced-round Lesamnta-LW-BC. IET Inf. Secur. 16 (2) (2022)
Subhadeep Banik, Andrea Caforio, Takanori Isobe, Fukang Liu, Willi Meier, Kosei Sakamoto, Santanu Sarkar
Atom: A Stream Cipher with Double Key Filter. IACR Cryptol. ePrint Arch. 2021 (2021)
Jin Hoki, Kosei Sakamoto, Kazuhiko Minematsu, Takanori Isobe
Practical Integral Distinguishers on SNOW 3G and KCipher-2. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (11) (2021)
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
Bit-wise Cryptanalysis on AND-RX Permutation Friet-PC. IACR Cryptol. ePrint Arch. 2021 (2021)
Subhadeep Banik, Andrea Caforio, Takanori Isobe, Fukang Liu, Willi Meier, Kosei Sakamoto, Santanu Sarkar
Atom: A Stream Cipher with Double Key Filter. IACR Trans. Symmetric Cryptol. 2021 (1) (2021)
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
Bit-wise cryptanalysis on AND-RX permutation Friet-PC. J. Inf. Secur. Appl. 59 (2021)
Subhadeep Banik, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto
Orthros: A Low-Latency PRF. IACR Trans. Symmetric Cryptol. 2021 (1) (2021)
Fukang Liu, Takanori Isobe, Willi Meier, Kosei Sakamoto
Weak Keys in Reduced AEGIS and Tiaoxin. IACR Cryptol. ePrint Arch. 2021 (2021)
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V. ACISP (2021)
Fukang Liu, Takanori Isobe, Willi Meier, Kosei Sakamoto
Weak Keys in Reduced AEGIS and Tiaoxin. IACR Trans. Symmetric Cryptol. 2021 (2) (2021)
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V. IACR Cryptol. ePrint Arch. 2021 (2021)
Subhadeep Banik, Takanori Isobe, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto
Orthros: A Low-Latency PRF. IACR Cryptol. ePrint Arch. 2021 (2021)
Jin Hoki, Kosei Sakamoto, Fukang Liu, Kazuhiko Minematsu, Takanori Isobe
MILP-Aided Security Evaluation of Differential Attacks on KCipher-2. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2021)
Kosei Sakamoto, Fukang Liu, Yuto Nakano, Shinsaku Kiyomoto, Takanori Isobe
Rocca: An Efficient AES-based Encryption Scheme for Beyond 5G. IACR Trans. Symmetric Cryptol. 2021 (2) (2021)
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Yuki Funabiki, Takanori Isobe
Security of Related-Key Differential Attacks on TWINE, Revisited. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2020)
Subhadeep Banik, Zhenzhen Bao, Takanori Isobe, Hiroyasu Kubo, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto, Nao Shibata, Maki Shigeri
WARP : Revisiting GFN for Lightweight 128-Bit Block Cipher. SAC (2020)
Yuji Koike, Kosei Sakamoto, Takuya Hayashi, Takanori Isobe
Galaxy: A Family of Stream-Cipher-Based Space-Hard Ciphers. ACISP (2020)
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Yuki Funabiki, Andrey Bogdanov, Sumio Morioka, Takanori Isobe
Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (12) (2020)
Subhadeep Banik, Zhenzhen Bao, Takanori Isobe, Hiroyasu Kubo, Fukang Liu, Kazuhiko Minematsu, Kosei Sakamoto, Nao Shibata, Maki Shigeri
WARP : Revisiting GFN for Lightweight 128-bit Block Cipher. IACR Cryptol. ePrint Arch. 2020 (2020)
Kosei Sakamoto, Kazuhiko Minematsu, Nao Shibata, Maki Shigeri, Hiroyasu Kubo, Yuki Funabiki, Andrey Bogdanov, Sumio Morioka, Takanori Isobe
Tweakable TWINE: Building a Tweakable Block Cipher on Generalized Feistel Structure. IWSEC (2019)