Dr. Andy Rupp is the head of the KASTEL Junior Research Group "CyPhyCrypt". His research aims at bridging the gap between novel cryptographic theory on the one hand and security and privacy mechanisms suitable for real-world application scenarios such as Mobile Payments, Smart Traffic, Smart Grid, Smart City. To this end, he develops dedicated security models, crypto primitives, and protocol building blocks which are then composed very carefully to obtain provably secure, yet practical systems.