This paper presents a hybrid cryptographic protocol, using quantum and classical resources, to generate a key for authentication and optionally for encryption in a network. One or more trusted servers distribute streams of entangled photons to individual resources that seek to communicate. An important class of cheating by a compromised server will be detected.
@article{arxiv.quant-ph/0311085,
title = {A Quantum Cryptographic Protocol with Detection of Compromised Server},
author = {D. Richard Kuhn},
journal= {arXiv preprint arXiv:quant-ph/0311085},
year = {2007}
}