Unconditionally-secure and reusable public-key authentication

Published 14 Aug 2011 in quant-ph | (1108.2887v1)

Abstract: We present a quantum-public-key identification protocol and show that it is secure against a computationally-unbounded adversary. This demonstrates for the first time that unconditionally-secure and reusable public-key authentication is possible in principle with (pure-state) public keys.

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