A Novel Scheme of Schnorr Multi-signatures for Multiple Messages with Key Aggregation. - Rikuhiro Kojima; Dai Yamamoto; Takeshi Shimoyama; Kouichi Yasaki; Kazuaki Nimura (BWCCA, 2020)

A New Schnorr Multi-Signatures to Support Both Multiple Messages Signing and Key Aggregation. - Rikuhiro Kojima; Dai Yamamoto; Takeshi Shimoyama; Kouichi Yasaki; Kazuaki Nimura (J. Inf. Process., 2021)

A Chameleon Hash-based Method for Proving Execution of Business Processes. - Tadanobu Tsunoda; Kazuaki Nimura; Dai Yamamoto; Kouichi Yasaki; Rikuhiro Kojima; Yosuke Nakamura (J. Inf. Process., 2022)

A New Pairing-Based Two-Round Tightly-Secure Multi-Signature Scheme with Key Aggregation. - Rikuhiro Kojima; Jacob C. N. Schuldt; Goichiro Hanaoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)