Papers - IWATA Tetsu
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Practical committing attacks against Rocca-S Reviewed
Ryunosuke Takeuchi, Yosuke Todo, and Tetsu Iwata
Inf. Proc. Letters Vol. 192 ( 106610 ) 2026.2
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Vector-Input Hashing Modes for Collision-Resistant Pseudorandom Function Reviewed
Shoichi Hirose, Tetsu Iwata, and Hidenori Kuwakado
Information Security and Cryptology - ICISC 2025 Vol. LNCS 2025.11
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Type-2 Generalized Feistel Structures Based on Tweakable Block Ciphers, Reconsidered Reviewed
Kento Tsuji and Tetsu Iwata
IACR Communications in Cryptology (CiC) Vol. Vol. 2025 ( Issue 3 ) page： 1 - 29 2025.10
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Cryptographic Treatment of Key Control Security - In Light of NIST SP 800-108 Reviewed International coauthorship
Ritam Bhaumik, Avijit Dutta, Akiko Inoue, Tetsu Iwata, Ashwin Jha, Kazuhiko Minematsu, Mridul Nandi, Yu Sasaki, Meltem Sönmez Turan, and Stefano Tessaro
Advances in Cryptology - CRYPTO 2025 Vol. LNCS 16004 page： 371 - 403 2025.8
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Comprehensive Robustness Analysis of GCM, CCM, and OCB3 Reviewed
Akiko Inoue, Tetsu Iwata, and Kazuhiko Minematsu
Topics in Cryptology - CT-RSA 2025 ( LNCS 15598 ) page： 75 - 98 2025.4
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Feistel Ciphers Based on a Single Primitive Reviewed
Kento Tsuji and Tetsu Iwata
IEICE Trans. Fundamentals Vol. Vol. E107-A ( No. 8 ) page： 1229 - 1240 2024.8
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Ryunosuke Takeuchi, Yosuke Todo, and Tetsu Iwata
IACR Transactions on Symmetric Cryptology (ToSC) Vol. Vol. 2024 ( Issue 2 ) page： 85 - 117 2024.6
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Key Committing Security of AEZ and More Reviewed International coauthorship Open Access
Yu Long Chen, Antonio Florez-Gutierrez, Akiko Inoue, Ryoma Ito, Tetsu Iwata, Kazuhiko Minematsu, Nicky Mouha, Yusuke Naito, Ferdinand Sibleyras, and Yosuke Todo
IACR Transactions on Symmetric Cryptology (ToSC) Vol. Vol. 2023 ( Issue 4 ) page： 452 - 488 2023.12
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Feistel Ciphers Based on a Single Primitive Reviewed
Kento Tsuji and Tetsu Iwata
Cryptography and Coding, 19th IMA International Conference, IMACC 2023, Lecture Notes in Computer Science, Springer ( LNCS 14421 ) page： 57 - 79 2023.12
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PMACrx: A Vector-Input MAC for High-Dimensional Vectors with BBB Security Reviewed
Isamu Furuya, Hayato Kasahara, Akiko Inoue, Kazuhiko Minematsu, and Tetsu Iwata
Advances in Information and Computer Security, IWSEC 2023, Lecture Notes in Computer Science, Springer ( LNCS 14128 ) page： 77 - 97 2023.8
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Generalized Feistel Structures based on Tweakable Block Ciphers Reviewed Open Access
Kazuki Nakaya and Tetsu Iwata
IACR Transactions on Symmetric Cryptology (ToSC) Vol. Vol. 2022 ( Issue 4 ) page： 24 - 91 2022.12
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Cryptanalysis of Rocca and Feasibility of Its Security Claim Reviewed Open Access
Akinori Hosoyamada, Akiko Inoue, Ryoma Ito, Tetsu Iwata, Kazuhiko Mimematsu, Ferdinand Sibleyras, and Yosuke Todo
IACR Transactions on Symmetric Cryptology (ToSC) Vol. Vol. 2022 ( Issue 3 ) page： 123 - 151 2022.9
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Matching attacks on Romulus-M Reviewed Open Access
Makoto Habu, Kazuhiko Minematsu, and Tetsu Iwata
IET Inf. Secur. Vol. 16 ( 6 ) page： 459 - 469 2022.7
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Analyzing the Provable Security Bounds of GIFT-COFB and Photon-Beetle Reviewed
Akiko Inoue, Tetsu Iwata, and Kazuhiko Minematsu
Applied Cryptography and Network Security, ACNS 2022, Lecture Notes in Computer Science, Springer ( LNCS 13269 ) page： 67 - 84 2022.6
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New indifferentiability security proof of MDPH hash function Reviewed International coauthorship Open Access
Chun Guo, Tetsu Iwata, and Kazuhiko Minematsu
IET Inf. Secur. page： 1 - 20 2022.3
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On the (Im)possibility of Improving the Round Diffusion of Generalized Feistel Structures Reviewed Open Access
Kyoji Shibutani and Tetsu Iwata
Inf. Proc. Letters Vol. 174 ( 106197 ) 2022.3
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Quantum Attacks on Sum of Even-Mansour Pseudorandom Functions Reviewed Open Access
Kazuo Shinagawa and Tetsu Iwata
Inf. Proc. Letters Vol. 173 ( 106172 ) 2022.1
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Indifferentiability of SKINNY-HASH Internal Functions Reviewed
Akinori Hosoyamada and Tetsu Iwata
IEICE Trans. Fundamentals Vol. Vol. E104-A ( No. 9 ) page： 1156 - 1162 2021.9
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On Tight Quantum Security of HMAC and NMAC in the Quantum Random Oracle Model Reviewed
Akinori Hosoyamada and Tetsu Iwata
Advances in Cryptology - CRYPTO 2021 Vol. LNCS 12825 page： 585 - 615 2021.8
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Provably Quantum-Secure Tweakable Block Ciphers Reviewed Open Access
Akinori Hosoyamada and Tetsu Iwata
IACR Transactions on Symmetric Cryptology (ToSC) Vol. Vol. 2021 ( Issue 1 ) page： 337 - 377 2021.3