| 2006 | PST | Off-line verification of one-time ID in distributed environment. | Kenji Imamoto, Kouichi Sakurai |
| 2005 | EUC | Reassignment Scheme of an RFID Tag's Key for Owner Transfer. | Junichiro Saito, Kenji Imamoto, Kouichi Sakurai |
| 2005 | ICICS | An Evenhanded Certified Email System for Contract Signing. | Kenji Imamoto, Jianying Zhou, Kouichi Sakurai |
| 2005 | ICICS | Generic, Optimistic, and Efficient Schemes for Fair Certified Email Delivery. | Guilin Wang, Feng Bao, Kenji Imamoto, Kouichi Sakurai |
| 2005 | ICITA | Some Remarks on Security of Receipt-Free E-auction. | Yong-Sork Her, Kenji Imamoto, Kouichi Sakurai |
| 2004 | AINA | A Design of Diffie-Hellman Based Key Exchange Using One-time ID in Pre-shared Key Model. | Kenji Imamoto, Kouichi Sakurai |
| 2004 | WISA | Key-Exchange Protocol Using Pre-agreed Session-ID. | Kenji Imamoto, Kouichi Sakurai |
| 2002 | INDOCRYPT | A Certified E-mail System with Receiver's Selective Usage of Delivery Authority. | Kenji Imamoto, Kouichi Sakurai |
| 2000 | ISMAR | Virtual object manipulation on a table-top AR environment. | Hirokazu Kato, Mark Billinghurst, Ivan Poupyrev, Kenji Imamoto, Keihachiro Tachibana |