| 2018 | ICISC | A Hierarchical Secret Sharing Scheme Based on Information Dispersal Techniques. | Koji Shima, Hiroshi Doi |
| 2018 | IWSEC | XOR-Based Hierarchical Secret Sharing Scheme. | Koji Shima, Hiroshi Doi |
| 2013 | FC | Privacy Preserving Data Processing with Collaboration of Homomorphic Cryptosystems. | Shigeo Tsujii, Hiroshi Doi, Ryou Fujita, Masahito Gotaishi, Yukiyasu Tsunoo, Takahiko Syouji |
| 2009 | SECRYPT | On the Security of Adding Confirmers into Designated Confirmer Signatures. | Wataru Senga, Hiroshi Doi |
| 2008 | SECRYPT | Efficient IBE-PKE Proxy Re-Encryption. | Takeo Mizuno, Hiroshi Doi |
| 2006 | WISA | Privacy-Enhanced Content Distribution and Charging Scheme Using Group Signature. | Takayuki Tobita, Hironori Yamamoto, Hiroshi Doi, Keigo Majima |
| 2005 | CIS | On the Security of Condorcet Electronic Voting Scheme. | Yoon Cheol Lee, Hiroshi Doi |
| 2000 | ACISP | On the Security of the RSA-Based Multisignature Scheme for Various Group Structures. | Hiroshi Doi, Masahiro Mambo, Eiji Okamoto |
| 2000 | PKC | A Structured ElGamal-Type Multisignature Scheme. | Mike Burmester, Yvo Desmedt, Hiroshi Doi, Masahiro Mambo, Eiji Okamoto, Mitsuru Tada, Yuko Yoshifuji |