| 2013 | AINA | Privacy-Preserving Distributed Decision Tree Learning with Boolean Class Attributes. | Hiroaki Kikuchi, Kouichi Itoh, Mebae Ushida, Hiroshi Tsuda, Yuji Yamaoka |
| 2013 | CARDIS | Evaluation of ASIC Implementation of Physical Random Number Generators Using RS Latches. | Hirotaka Kokubo, Dai Yamamoto, Masahiko Takenaka, Kouichi Itoh, Naoya Torii |
| 2011 | ACNS | Exponent Blinding Does Not Always Lift (Partial) Spa Resistance to Higher-Level Security. | Werner Schindler, Kouichi Itoh |
| 2011 | CHES | Uniqueness Enhancement of PUF Responses Based on the Locations of Random Outputting RS Latches. | Dai Yamamoto, Kazuo Sakiyama, Mitsugu Iwamoto, Kazuo Ohta, Takao Ochiai, Masahiko Takenaka, Kouichi Itoh |
| 2010 | WISTP | A Very Compact Hardware Implementation of the KASUMI Block Cipher. | Dai Yamamoto, Kouichi Itoh, Jun Yajima |
| 2008 | CHES | A Very Compact Hardware Implementation of the MISTY1 Block Cipher. | Dai Yamamoto, Jun Yajima, Kouichi Itoh |
| 2006 | ACNS | Improving the Randomized Initial Point Countermeasure Against DPA. | Kouichi Itoh, Tetsuya Izu, Masahiko Takenaka |
| 2006 | ICICS | A Fast RSA Implementation on Itanium 2 Processor. | Kazuyoshi Furukawa, Masahiko Takenaka, Kouichi Itoh |
| 2004 | CARDIS | Efficient Countermeasures against Power Analysis for Elliptic Curve Cryptosystems. | Kouichi Itoh, Tetsuya Izu, Masahiko Takenaka |
| 2003 | CHES | A Practical Countermeasure against Address-Bit Differential Power Analysis. | Kouichi Itoh, Tetsuya Izu, Masahiko Takenaka |
| 2002 | CHES | Address-Bit Differential Power Analysis of Cryptographic Schemes OK-ECDH and OK-ECDSA. | Kouichi Itoh, Tetsuya Izu, Masahiko Takenaka |
| 2002 | CHES | DPA Countermeasures by Improving the Window Method. | Kouichi Itoh, Jun Yajima, Masahiko Takenaka, Naoya Torii |
| 2001 | FSE | The Block Cipher SC2000. | Takeshi Shimoyama, Hitoshi Yanami, Kazuhiro Yokoyama, Masahiko Takenaka, Kouichi Itoh, Jun Yajima, Naoya Torii, Hidema Tanaka |
| 2001 | ICISC | DPA Countermeasure Based on the "Masking Method". | Kouichi Itoh, Masahiko Takenaka, Naoya Torii |
| 2000 | CHES | Implementation of Elliptic Curve Cryptographic Coprocessor over GF(2 | Souichi Okada, Naoya Torii, Kouichi Itoh, Masahiko Takenaka |
| 1999 | CHES | Fast Implementation of Public-Key Cryptography ona DSP TMS320C6201. | Kouichi Itoh, Masahiko Takenaka, Naoya Torii, Syouji Temma, Yasushi Kurihara |
| 1997 | ICIP | Automated Detection of Breast Tumors in Ultrasonic Image Using Fuzzy Reasoning. | Xianyong Cheng, Iwaki Akiyama, Kouichi Itoh, Yi Wang, N. Taniguchi, M. Nakajima |