Advances in Cryptology - ASIACRYPT 2019 25th International Conference on the Theory and Application of Cryptology and Information Security, Kobe, Japan, December 8-12, 2019, Proceedings, Part I - Galbraith, Steven D.; Galbraith, Steven D.; Moriai, Shiho; Moriai, Shiho (Springer International Publishing : Imprint: Springer, 2019)