- 2022 - 2025 Proposal and implementation of privacy-enhancing authentications on blockchain
- 2019 - 2022 Anonymous Authentications for Privacy-Enhancing Crowd Sensing
- 2016 - 2019 High-functional cryptosystems with more security and efficiency in cloud computing
- 2016 - 2019 Realization of secure and reliable communication in a remote control type / autonomous mobile system in the IoT era
- 2013 - 2016 Proposal and Implementation of Anonymous Authentications Suitable for Mobile Environment
- 2010 - 2012 Proposal and Implementation of Revocable Group Signature Scheme with Scalability
- 2010 - 2012 A Study of Scalable Wireless Mesh Network for High-Capacity Data Transmission
- 2009 - 2011 Development of a Practical Inter-organization Anonymous Authentication under Ubiquitous Environment and its Experimental Study
- 2007 - 2009 Proposal and Implementation of Group Signature Scheme with Complete Privacy Protection
- 2004 - 2007 Astudy of peerto-peer multicast communications with multiple Internet interfaces
- 2004 - 2006 大規模グループに適したグループ署名の提案とその実装
- 2002 - 2003 効率的な所属無効化が可能なグループ署名方式の提案とその実装
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