Researcher Search Results Takanori Isobe Takanori Isobe (五十部 孝典) Please select the form format to download from below 「Education and research environment」format 「No. 4, the Ministry of Education document style ①Outline for Vitae」format 「No. 4, the Ministry of Education document style ②Education and research environment」format Profile Information AffiliationProfessor, University of HyogoDegreePh.D(Kobe University)J-GLOBAL ID201801019178208986researchmap Member IDB000307343External linkhttps://sites.google.com/view/takanoriisobe Research Interests 5 End-to-End Encryption Cryptanalysis Whitebox Cryptagraphy Lightweight Cryptgraphy Symmetric-key Cryptgraphy Research Areas 1 Informatics / Information security / Cryptgraphy Major Research History 9 Apr, 2023 - Present Professor, Graduate School of Information Science, University of Hyogo Aug, 2018 - Present Invited Advisor, National Institute of Information and Communications Technology Nov, 2020 - Mar, 2022 兼任研究員, JST さきがけ Apr, 2008 - Mar, 2017 Sony Corporation More Education 2 Oct, 2011 - Sep, 2013 Graduate School of Engineering, Kobe University Apr, 2006 - Mar, 2008 Graduate School of Science and Technology, Kobe University Major Committee Memberships 25 Apr, 2024 - Dec, 2024 プログラム委員, ASIACRYPT 2024 Jan, 2024 - Dec, 2024 プログラム委員, FSE2025/ToSC2024 Apr, 2023 - Sep, 2023 Program Committee, Selected Areas in Cryptography 2023 Jan, 2023 - Mar, 2023 Co General Chair, FSE 2023 Apr, 2022 - Mar, 2023 INDOCRYPT 2022 Program Co-Chair Apr, 2022 - Mar, 2023 FSE 2023/ToSC2022 Program Commitee Apr, 2022 - Dec, 2022 ASIACRYPT 2022 プログラム委員 Apr, 2021 - Mar, 2022 Program Committee, FSE 2022/ToSC2021 Dec, 2020 - Jun, 2021 Program Committee, CT-RSA 2021 Apr, 2020 - Mar, 2021 Program Commitee, FSE 2021/ToSC2020 May, 2020 - Dec, 2020 Program Committee, ASIACRYPT 2020 May, 2019 - Mar, 2020 Program Commitee, ASIACRYPT 2019 More Major Awards 15 May, 2024 船井学術賞, 超高性能暗号の設計と実社会展開, 船井情報科学振興財団 五十部 孝典 Jun, 2023 末松安晴賞, 次世代共通鍵暗号の研究開発と社会展開, 電子情報通信学会 五十部 孝典 Apr, 2023 The Young Scientists’ Award, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology Takanori Isobe Mar, 2023 Fast Software Encryption 2022 Best Paper Award, International Association for Cryptologic Research Mar, 2022 Fast Software Encryption 2022 Best Paper Award, International Association for Cryptologic Research Jul, 2021 2021年暗号と情報セキュリティシンポジウム(SCIS) イノベーション論文賞,, Zoomのエンドツーエンド暗号化に対する安全性評価, 電子情報通信学会 五十部 孝典, 伊藤 竜馬 Oct, 2018 第3回 辻井重男セキュリティ論文賞 大賞,, White-Box Cryptography Revisited: Space-Hard Ciphers, 日本セキュリテイ・マネジメント学会 五十部 孝典, Andrey Bogdanov May, 2018 SCIS 2018 Innovation paper award takanori isobe, kazuhiko minematsu Apr, 2014 論文賞, Comprehensive Analysis of Initial Keystream Biases of RC4, 電子情報通信学会 五十部 孝典, 大東俊博, 渡辺優平, 森井昌克 Mar, 2011 Fast Software Encryption 2011 Best Paper Award, A Single-Key Attack on the Full GOST Block Cipher, International Association for Cryptographic Research Takanori Isobe More Papers 125 Revisiting the Boomerang Attack From a Perspective of 3-Differential. Libo Wang, Ling Song 0001, Baofeng Wu, Mostafizar Rahman, Takanori Isobe IEEE Trans. Inf. Theory, 70(7) 5343-5357, Jul, 2024 Peer-reviewed Restricted near collision attack on Plantlet. Satyam Kumar, Sandip Kumar Mondal, Santanu Sarkar, Takanori Isobe, Anubhab Baksi, Avishek Adhikari J. Cryptogr. Eng., 14(1) 19-34, Apr, 2024 Peer-reviewed Analysis of Atom against quantum attacks. Ravi Anand, Rimpa Nandi, Takanori Isobe IET Quantum Commun., 5(1) 88-102, Mar, 2024 Peer-reviewed Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications Kosei Sakamoto, Ryoma Ito, Takanori Isobe Selected Areas in Cryptography – SAC 2023, 409-428, Feb 19, 2024 Peer-reviewed Exploring the optimality of byte-wise permutations of a piccolo-type block cipher. Shion Utsumi, Motoki Nakahashi, Kosei Sakamoto, Takanori Isobe Inf. Process. Lett., 184 106436-106436, Feb, 2024 Peer-reviewed Key Committing Attacks against AES-based AEAD Schemes. Patrick Derbez, Pierre-Alain Fouque, Takanori Isobe, Mostafizar Rahman, André Schrottenloher IACR Trans. Symmetric Cryptol., 2024(1) 135-157, 2024 Peer-reviewed 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 Cryptanalysis on End-to-End Encryption Schemes of Communication Tools and Its Research Trend Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu Journal of Information Processing, 31 523-536, Sep 15, 2023 Peer-reviewedInvited Bit-level evaluation of piccolo block cipher by satisfiability problem solver. Shion Utsumi, Kosei Sakamoto, Takanori Isobe IET Information Security, 17(4) 616-625, Jul, 2023 Peer-reviewed MILP-based security evaluation for AEGIS/Tiaoxin-346/Rocca. Takuro Shiraya, Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe IET Information Security, 17(3) 458-467, May, 2023 Peer-reviewed Quantum security analysis of Rocca. Ravi Anand, Takanori Isobe Quantum Inf. Process., 22(4) 164-164, Apr, 2023 Peer-reviewed mPoW: How to Make Proof of Work Meaningful. Takaki Asanuma, Takanori Isobe IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 106(3) 333-340, Mar, 2023 Peer-reviewed Security Evaluation of Initialization Phases and Round Functions of Rocca and AEGIS. Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 106(3) 253-262, Mar, 2023 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 A Deeper Look into Deep Learning-based Output Prediction Attacks Using Weak SPN Block Ciphers. Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi Journal of Information Processing, 31 550-561, 2023 Peer-reviewed Ghidle: Efficient Large-State Block Ciphers for Post-quantum Security. Motoki Nakahashi, Rentaro Shiba, Ravi Anand, Mostafizar Rahman, Kosei Sakamoto, Fukang Liu, Takanori Isobe ACISP, 403-430, 2023 Peer-reviewed Even-Mansour Space-hard Cipher: White-box Cryptography Cipher Meets Physically Unclonable Function. Takaki Asanuma, Takanori Isobe J. Inf. Process., 31 88-96, 2023 Peer-reviewed Cubicle: A family of space-hard ciphers for IoT. Rentaro Shiba, Ravi Anand, Kazuhiko Minematsu, Takanori Isobe IET Inf. Secur., 17(1) 131-146, Jan, 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 An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros. Kazuma Taka, Tatsuya Ishikawa, Kosei Sakamoto, Takanori Isobe CT-RSA, 277-304, 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 On Optimality of the Round Function of Rocca. Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 106(1) 45-53, 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 Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi. Jin Hoki, Takanori Isobe 0001, Ryoma Ito 0001, Fukang Liu, Kosei Sakamoto Journal of Information Security and Applications, 65 103100-103100, 2022 Peer-reviewed Output Prediction Attacks on Block Ciphers Using Deep Learning Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi Lecture Notes in Computer Science, 248-276, 2022 Peer-reviewed Efficient constructions for large-state block ciphers based on AES New Instructions. Rentaro Shiba, Kosei Sakamoto, Takanori Isobe 0001 IET Information Security, 16(3) 145-160, 2022 Peer-reviewed Integral and impossible-differential attacks on the reduced-round Lesamnta-LW-BC. Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Kazuhiko Minematsu, Takanori Isobe 0001 IET Information Security, 16(2) 75-85, 2022 Peer-reviewed A Proof of Work Based on Key Recovery Problem of Cascade Block Ciphers with ASIC Resistance. Takaki Asanuma, Takanori Isobe IEICE Transactions on Information & Systems, 105(2) 248-255, 2022 Peer-reviewed 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 0001 IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 105-A(3) 278-288, 2022 Peer-reviewed Applying Byte-Shuffling to CLEFIA-Type Structure. Kazuto Shimizu, Kosei Sakamoto, Takanori Isobe 0001 IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 105-A(3) 268-277, 2022 Peer-reviewed A Proof of Work based on Preimage Problem of Variants of SHA-3 with ASIC Resistance. Takaki Asanuma, Takanori Isobe 0001 J. Inf. Process., 30 75-83, 2022 Peer-reviewed Output Prediction Attacks on SPN Block Ciphers using Deep Learning. Hayato Kimura 0002, Keita Emura, Takanori Isobe 0001, Ryoma Ito 0001, Kazuto Ogawa, Toshihiro Ohigashi IACR Cryptology ePrint Archive, 2021 401-401, 2021 Peer-reviewed Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto Information Security and Privacy, 171-190, 2021 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 123» Major Research Projects 14 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 More
Takanori Isobe (五十部 孝典) Please select the form format to download from below 「Education and research environment」format 「No. 4, the Ministry of Education document style ①Outline for Vitae」format 「No. 4, the Ministry of Education document style ②Education and research environment」format Profile Information AffiliationProfessor, University of HyogoDegreePh.D(Kobe University)J-GLOBAL ID201801019178208986researchmap Member IDB000307343External linkhttps://sites.google.com/view/takanoriisobe Research Interests 5 End-to-End Encryption Cryptanalysis Whitebox Cryptagraphy Lightweight Cryptgraphy Symmetric-key Cryptgraphy Research Areas 1 Informatics / Information security / Cryptgraphy Major Research History 9 Apr, 2023 - Present Professor, Graduate School of Information Science, University of Hyogo Aug, 2018 - Present Invited Advisor, National Institute of Information and Communications Technology Nov, 2020 - Mar, 2022 兼任研究員, JST さきがけ Apr, 2008 - Mar, 2017 Sony Corporation More Education 2 Oct, 2011 - Sep, 2013 Graduate School of Engineering, Kobe University Apr, 2006 - Mar, 2008 Graduate School of Science and Technology, Kobe University Major Committee Memberships 25 Apr, 2024 - Dec, 2024 プログラム委員, ASIACRYPT 2024 Jan, 2024 - Dec, 2024 プログラム委員, FSE2025/ToSC2024 Apr, 2023 - Sep, 2023 Program Committee, Selected Areas in Cryptography 2023 Jan, 2023 - Mar, 2023 Co General Chair, FSE 2023 Apr, 2022 - Mar, 2023 INDOCRYPT 2022 Program Co-Chair Apr, 2022 - Mar, 2023 FSE 2023/ToSC2022 Program Commitee Apr, 2022 - Dec, 2022 ASIACRYPT 2022 プログラム委員 Apr, 2021 - Mar, 2022 Program Committee, FSE 2022/ToSC2021 Dec, 2020 - Jun, 2021 Program Committee, CT-RSA 2021 Apr, 2020 - Mar, 2021 Program Commitee, FSE 2021/ToSC2020 May, 2020 - Dec, 2020 Program Committee, ASIACRYPT 2020 May, 2019 - Mar, 2020 Program Commitee, ASIACRYPT 2019 More Major Awards 15 May, 2024 船井学術賞, 超高性能暗号の設計と実社会展開, 船井情報科学振興財団 五十部 孝典 Jun, 2023 末松安晴賞, 次世代共通鍵暗号の研究開発と社会展開, 電子情報通信学会 五十部 孝典 Apr, 2023 The Young Scientists’ Award, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology Takanori Isobe Mar, 2023 Fast Software Encryption 2022 Best Paper Award, International Association for Cryptologic Research Mar, 2022 Fast Software Encryption 2022 Best Paper Award, International Association for Cryptologic Research Jul, 2021 2021年暗号と情報セキュリティシンポジウム(SCIS) イノベーション論文賞,, Zoomのエンドツーエンド暗号化に対する安全性評価, 電子情報通信学会 五十部 孝典, 伊藤 竜馬 Oct, 2018 第3回 辻井重男セキュリティ論文賞 大賞,, White-Box Cryptography Revisited: Space-Hard Ciphers, 日本セキュリテイ・マネジメント学会 五十部 孝典, Andrey Bogdanov May, 2018 SCIS 2018 Innovation paper award takanori isobe, kazuhiko minematsu Apr, 2014 論文賞, Comprehensive Analysis of Initial Keystream Biases of RC4, 電子情報通信学会 五十部 孝典, 大東俊博, 渡辺優平, 森井昌克 Mar, 2011 Fast Software Encryption 2011 Best Paper Award, A Single-Key Attack on the Full GOST Block Cipher, International Association for Cryptographic Research Takanori Isobe More Papers 125 Revisiting the Boomerang Attack From a Perspective of 3-Differential. Libo Wang, Ling Song 0001, Baofeng Wu, Mostafizar Rahman, Takanori Isobe IEEE Trans. Inf. Theory, 70(7) 5343-5357, Jul, 2024 Peer-reviewed Restricted near collision attack on Plantlet. Satyam Kumar, Sandip Kumar Mondal, Santanu Sarkar, Takanori Isobe, Anubhab Baksi, Avishek Adhikari J. Cryptogr. Eng., 14(1) 19-34, Apr, 2024 Peer-reviewed Analysis of Atom against quantum attacks. Ravi Anand, Rimpa Nandi, Takanori Isobe IET Quantum Commun., 5(1) 88-102, Mar, 2024 Peer-reviewed Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications Kosei Sakamoto, Ryoma Ito, Takanori Isobe Selected Areas in Cryptography – SAC 2023, 409-428, Feb 19, 2024 Peer-reviewed Exploring the optimality of byte-wise permutations of a piccolo-type block cipher. Shion Utsumi, Motoki Nakahashi, Kosei Sakamoto, Takanori Isobe Inf. Process. Lett., 184 106436-106436, Feb, 2024 Peer-reviewed Key Committing Attacks against AES-based AEAD Schemes. Patrick Derbez, Pierre-Alain Fouque, Takanori Isobe, Mostafizar Rahman, André Schrottenloher IACR Trans. Symmetric Cryptol., 2024(1) 135-157, 2024 Peer-reviewed 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 Cryptanalysis on End-to-End Encryption Schemes of Communication Tools and Its Research Trend Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu Journal of Information Processing, 31 523-536, Sep 15, 2023 Peer-reviewedInvited Bit-level evaluation of piccolo block cipher by satisfiability problem solver. Shion Utsumi, Kosei Sakamoto, Takanori Isobe IET Information Security, 17(4) 616-625, Jul, 2023 Peer-reviewed MILP-based security evaluation for AEGIS/Tiaoxin-346/Rocca. Takuro Shiraya, Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe IET Information Security, 17(3) 458-467, May, 2023 Peer-reviewed Quantum security analysis of Rocca. Ravi Anand, Takanori Isobe Quantum Inf. Process., 22(4) 164-164, Apr, 2023 Peer-reviewed mPoW: How to Make Proof of Work Meaningful. Takaki Asanuma, Takanori Isobe IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 106(3) 333-340, Mar, 2023 Peer-reviewed Security Evaluation of Initialization Phases and Round Functions of Rocca and AEGIS. Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 106(3) 253-262, Mar, 2023 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 A Deeper Look into Deep Learning-based Output Prediction Attacks Using Weak SPN Block Ciphers. Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi Journal of Information Processing, 31 550-561, 2023 Peer-reviewed Ghidle: Efficient Large-State Block Ciphers for Post-quantum Security. Motoki Nakahashi, Rentaro Shiba, Ravi Anand, Mostafizar Rahman, Kosei Sakamoto, Fukang Liu, Takanori Isobe ACISP, 403-430, 2023 Peer-reviewed Even-Mansour Space-hard Cipher: White-box Cryptography Cipher Meets Physically Unclonable Function. Takaki Asanuma, Takanori Isobe J. Inf. Process., 31 88-96, 2023 Peer-reviewed Cubicle: A family of space-hard ciphers for IoT. Rentaro Shiba, Ravi Anand, Kazuhiko Minematsu, Takanori Isobe IET Inf. Secur., 17(1) 131-146, Jan, 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 An Efficient Strategy to Construct a Better Differential on Multiple-Branch-Based Designs: Application to Orthros. Kazuma Taka, Tatsuya Ishikawa, Kosei Sakamoto, Takanori Isobe CT-RSA, 277-304, 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 On Optimality of the Round Function of Rocca. Nobuyuki Takeuchi, Kosei Sakamoto, Takanori Isobe IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 106(1) 45-53, 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 Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi. Jin Hoki, Takanori Isobe 0001, Ryoma Ito 0001, Fukang Liu, Kosei Sakamoto Journal of Information Security and Applications, 65 103100-103100, 2022 Peer-reviewed Output Prediction Attacks on Block Ciphers Using Deep Learning Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi Lecture Notes in Computer Science, 248-276, 2022 Peer-reviewed Efficient constructions for large-state block ciphers based on AES New Instructions. Rentaro Shiba, Kosei Sakamoto, Takanori Isobe 0001 IET Information Security, 16(3) 145-160, 2022 Peer-reviewed Integral and impossible-differential attacks on the reduced-round Lesamnta-LW-BC. Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Kazuhiko Minematsu, Takanori Isobe 0001 IET Information Security, 16(2) 75-85, 2022 Peer-reviewed A Proof of Work Based on Key Recovery Problem of Cascade Block Ciphers with ASIC Resistance. Takaki Asanuma, Takanori Isobe IEICE Transactions on Information & Systems, 105(2) 248-255, 2022 Peer-reviewed 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 0001 IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 105-A(3) 278-288, 2022 Peer-reviewed Applying Byte-Shuffling to CLEFIA-Type Structure. Kazuto Shimizu, Kosei Sakamoto, Takanori Isobe 0001 IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 105-A(3) 268-277, 2022 Peer-reviewed A Proof of Work based on Preimage Problem of Variants of SHA-3 with ASIC Resistance. Takaki Asanuma, Takanori Isobe 0001 J. Inf. Process., 30 75-83, 2022 Peer-reviewed Output Prediction Attacks on SPN Block Ciphers using Deep Learning. Hayato Kimura 0002, Keita Emura, Takanori Isobe 0001, Ryoma Ito 0001, Kazuto Ogawa, Toshihiro Ohigashi IACR Cryptology ePrint Archive, 2021 401-401, 2021 Peer-reviewed Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto Information Security and Privacy, 171-190, 2021 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 123» Major Research Projects 14 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 More