September 2014. Talk at QCrypt 2014. Regular paper: Quantum position verification in the random oracle model by Unruh.
We present a quantum position verification scheme in the random oracle model. In contrast to prior work, our scheme does not require bounded storage/retrieval/entanglement assumptions. We also give an efficient position-based authentication protocol. This enables secret and authenticated communication with an entity that is only identified by its position in space.
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