| 2025 | CCS | Poster: An Improved Quantum Attack on the Two-round Even-Mansour Cipher with Independent Permutations and Keys. | Rentaro Shiba, Tetsu Iwata |
| 2025 | CRYPTO | Cryptographic Treatment of Key Control Security - In Light of NIST SP 800-108. | Ritam Bhaumik, Avijit Dutta, Akiko Inoue, Tetsu Iwata, Ashwin Jha, Kazuhiko Minematsu, Mridul Nandi, Yu Sasaki, Meltem Snmez Turan, Stefano Tessaro |
| 2025 | ICISC | Vector-Input Hashing Modes for Collision-Resistant Pseudorandom Function. | Shoichi Hirose, Tetsu Iwata, Hidenori Kuwakado |
| 2023 | IWSEC | PMACrx: A Vector-Input MAC for High-Dimensional Vectors with BBB Security. | Isamu Furuya, Hayato Kasahara, Akiko Inoue, Kazuhiko Minematsu, Tetsu Iwata |
| 2022 | ACNS | Analyzing the Provable Security Bounds of GIFT-COFB and Photon-Beetle. | Akiko Inoue, Tetsu Iwata, Kazuhiko Minematsu |
| 2021 | CRYPTO | On Tight Quantum Security of HMAC and NMAC in the Quantum Random Oracle Model. | Akinori Hosoyamada, Tetsu Iwata |
| 2019 | ASIACRYPT | 4-Round Luby-Rackoff Construction is a qPRP. | Akinori Hosoyamada, Tetsu Iwata |
| 2019 | CRYPTO | Cryptanalysis of OCB2: Attacks on Authenticity and Confidentiality. | Akiko Inoue, Tetsu Iwata, Kazuhiko Minematsu, Bertram Poettering |
| 2019 | INDOCRYPT | Quantum Attacks Against Type-1 Generalized Feistel Ciphers and Applications to CAST-256. | Boyu Ni, Gembu Ito, Xiaoyang Dong, Tetsu Iwata |
| 2017 | CHES | Blockcipher-Based Authenticated Encryption: How Small Can We Go? | Avik Chakraborti, Tetsu Iwata, Kazuhiko Minematsu, Mridul Nandi |
| 2017 | CRYPTO | ZMAC: A Fast Tweakable Block Cipher Mode for Highly Secure Message Authentication. | Tetsu Iwata, Kazuhiko Minematsu, Thomas Peyrin, Yannick Seurin |
| 2017 | IWSEC | Analyzing Key Schedule of Simon: Iterative Key Differences and Application to Related-Key Impossible Differentials. | Kota Kondo, Yu Sasaki, Yosuke Todo, Tetsu Iwata |
| 2016 | ACNS | On the Design Rationale of Simon Block Cipher: Integral Attacks and Impossible Differential Attacks against Simon Variants. | Kota Kondo, Yu Sasaki, Tetsu Iwata |
| 2016 | ProvSec | Integrity Analysis of Authenticated Encryption Based on Stream Ciphers. | Kazuya Imamura, Kazuhiko Minematsu, Tetsu Iwata |
| 2015 | FSE | GCM Security Bounds Reconsidered. | Yuichi Niwa, Keisuke Ohashi, Kazuhiko Minematsu, Tetsu Iwata |
| 2015 | ICISC | On the Security of the Schnorr Signature Scheme and DSA Against Related-Key Attacks. | Hiraku Morita, Jacob C. N. Schuldt, Takahiro Matsuda, Goichiro Hanaoka, Tetsu Iwata |
| 2014 | FSE | CLOC: Authenticated Encryption for Short Input. | Tetsu Iwata, Kazuhiko Minematsu, Jian Guo, Sumio Morioka |
| 2014 | FSE | Impact of ANSI X9.24-1: 2009 Key Check Value on ISO/IEC 9797-1: 2011 MACs. | Tetsu Iwata, Lei Wang |
| 2013 | FSE | Attacks and Security Proofs of EAX-Prime. | Kazuhiko Minematsu, Stefan Lucks, Hiraku Morita, Tetsu Iwata |
| 2013 | ProvSec | Improved Authenticity Bound of EAX, and Refinements. | Kazuhiko Minematsu, Stefan Lucks, Tetsu Iwata |
| 2012 | ACNS | Cryptanalysis of 256-Bit Key HyRAL via Equivalent Keys. | Yuki Asano, Shingo Yanagihara, Tetsu Iwata |
| 2012 | CRYPTO | Breaking and Repairing GCM Security Proofs. | Tetsu Iwata, Keisuke Ohashi, Kazuhiko Minematsu |
| 2011 | CANS | On Permutation Layer of Type 1, Source-Heavy, and Target-Heavy Generalized Feistel Structures. | Shingo Yanagihara, Tetsu Iwata |
| 2009 | FSE | HBS: A Single-Key Mode of Operation for Deterministic Authenticated Encryption. | Tetsu Iwata, Kan Yasuda |
| 2008 | ProvSec | Tweakable Pseudorandom Permutation from Generalized Feistel Structure. | Atsushi Mitsuda, Tetsu Iwata |
| 2007 | FSE | The 128-Bit Blockcipher CLEFIA (Extended Abstract). | Taizo Shirai, Kyoji Shibutani, Toru Akishita, Shiho Moriai, Tetsu Iwata |
| 2006 | FSE | New Blockcipher Modes of Operation with Beyond the Birthday Bound Security. | Tetsu Iwata |
| 2005 | FSE | How to Enhance the Security of the 3GPP Confidentiality and Integrity Algorithms. | Tetsu Iwata, Kaoru Kurosawa |
| 2004 | ACISP | How to Re-use Round Function in Super-Pseudorandom Permutation. | Tetsu Iwata, Kaoru Kurosawa |
| 2004 | FSE | New Security Proofs for the 3GPP Confidentiality and Integrity Algorithms. | Tetsu Iwata, Tadayoshi Kohno |
| 2003 | ACISP | On the Pseudorandomness of KASUMI Type Permutations. | Tetsu Iwata, Tohru Yagi, Kaoru Kurosawa |
| 2003 | FSE | OMAC: One-Key CBC MAC. | Tetsu Iwata, Kaoru Kurosawa |
| 2003 | ICISC | On the Security of a New Variant of OMAC. | Tetsu Iwata, Kaoru Kurosawa |
| 2003 | INDOCRYPT | Stronger Security Bounds for OMAC, TMAC, and XCBC. | Tetsu Iwata, Kaoru Kurosawa |
| 2002 | FSE | Non-cryptographic Primitive for Pseudorandom Permutation. | Tetsu Iwata, Tomonobu Yoshino, Kaoru Kurosawa |
| 2002 | ICISC | On the Universal Hash Functionsin Luby-Rackoff Cipher. | Tetsu Iwata, Kaoru Kurosawa |
| 2001 | FSE | Round Security and Super-Pseudorandomness of MISTY Type Structure. | Tetsu Iwata, Tomonobu Yoshino, Tomohiro Yuasa, Kaoru Kurosawa |
| 2000 | FSE | On the Pseudorandomness of the AES Finalists - RC6 and Serpent. | Tetsu Iwata, Kaoru Kurosawa |
| 1999 | ASIACRYPT | Probabilistic Higher Order Differential Attack and Higher Order Bent Functions. | Tetsu Iwata, Kaoru Kurosawa |
| 1999 | ASIACRYPT | On Cryptographically Secure Vectorial Boolean Functions. | Takashi Satoh, Tetsu Iwata, Kaoru Kurosawa |
| 1998 | SETA | Inclusion Relations of Boolean Functions Satisfying PC(l) of Order k. | Tetsu Iwata, Kaoru Kurosawa |