Position based quantum cryptography

Position based quantum cryptography Impossibility and constructions

FREE-DOWNLOADH Buhrman, N Chandran, S Fehr, R Gelles… 2010
In this work, we study position-based cryptography in the quantum setting. The aim is to use the
geographical position of a party as its only credential. On the negative side, we show that if adversaries
are allowed to share an arbitrarily large entangled quantum state, no secure position