A Physical Zero-Knowledge Proof for Sumplete, a Puzzle Generated by ChatGPT. - Kyosuke Hatsugai; Kyoichi Asano; Yoshiki Abe (COCOON (1), 2023)

Card-Based Overwriting Protocol for Equality Function and Applications. - Suthee Ruangwises; Tomoki Ono; Yoshiki Abe; Kyosuke Hatsugai; Mitsugu Iwamoto (UCNC, 2024)

NP-Completeness and Physical Zero-Knowledge Proofs for Sumplete, a Puzzle Generated by ChatGPT. - Kyosuke Hatsugai; Suthee Ruangwises; Kyoichi Asano; Yoshiki Abe (New Gener. Comput., 2024)

Anonymous Credentials with Credential Redaction and Its Application to SSI-Based Plug&Charge for Shared Vehicles. - Kyosuke Hatsugai; Kyoichi Asano; Yuki Sawai; Yohei Watanabe 001; Mitsugu Iwamoto (ACISP (3), 2025)

Single-Shuffle Physical Zero-Knowledge Proof for Sudoku Using Interactive Inputs. - Tomoki Ono; Suthee Ruangwises; Yoshiki Abe; Kyosuke Hatsugai; Mitsugu Iwamoto (APKC@AsiaCCS, 2025)