Cryptanalysis of the quantum public-key cryptosystem OTU under heuristics from Szemerédi-type statements. - Shoichi Kamada (IACR Cryptol. ePrint Arch., 2021)

Improved Hybrid Attack via Error-Splitting Method for Finding Quinary Short Lattice Vectors. - Haiming Zhu; Shoichi Kamada; Momonari Kudo; Tsuyoshi Takagi (IWSEC, 2023)