On the problem of authentication in a quantum protocol to detect traffic analysis
Jörn Müller‐Quade, Rainer Steinwandt · Quantum Information and Computation · 2003
Recently, a basic design for a quantum protocol to detect a perpetual traffic analysis of a communication channel has been proposed\cite{SJB01}. As it stands, this protocol does not take the problem of authentication into account. We show that a `standard' authentication procedure does not apply in this context, as the attacker is only interested in the number of transmitted bits. Moreover, we demonstrate how to use a one-time pad like construction for solving this authentication problem.