Financial cryptography and data security FC 2020 International Workshops, AsiaUSEC, CoDeFi, VOTING, and WTSC, Kota Kinabalu, Malaysia, February 14, 2020 : revised selected papers - Bernhard, Matthew; Bracciali, Andrea; Camp, L. Jean; Matsuo, Shin'ichiro; Maurushat, Alana; Rønne, Peter B.; Sala, Massimiliano 1969- (Springer, 2020)