Strong Security Notions for Timed-Release Public-Key Encryption Revisited. - Ryo Kikuchi; Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (ICISC, 2011)

Security of Sequential Multiple Encryption. - Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Generic Construction of Strongly Secure Timed-Release Public-Key Encryption. - Atsushi Fujioka; Yoshiaki Okamoto; Taiichi Saito (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

A real-time virtual outing using virtual reality for a hospitalized terminal cancer patient who has difficulty going out: a case report. - Kazuyuki Niki; Satomi Egashira; Yoshiaki Okamoto (Frontiers Virtual Real., 2024)