Progress in Cryptology - INDOCRYPT 2019 20th International Conference on Cryptology in India, Hyderabad, India, December 15-18, 2019, Proceedings - Hao, Feng; Hao, Feng; Ruj, Sushmita; Ruj, Sushmita; Sen Gupta, Sourav; Sen Gupta, Sourav (Springer International Publishing : Imprint: Springer, 2019)