Cryptology ePrint Archive: Report 2016/446

Quantum key distribution with combined conjugate coding and information overloading

Boris Skoric

Abstract: Most quantum key distribution schemes depend either on a form of conjugate coding or on the principle of putting more information into a quantum state than can possibly be read out with a measurement. We construct a scheme that combines both these approaches. It is built from Round-Robin Differential Phase Shift (RRDPS) and Unclonable Encryption. Compared to RRDPS and BB84-like protocols our scheme has the advantage that it thwarts simple attacks and forces the adversary to use entanglement. We provide a security analysis in case of attacks without entanglement. Part of this analysis also applies to the unmodified RRDPS.

Category / Keywords: quantum key distribution

Date: received 5 May 2016, last revised 7 Jun 2016, withdrawn 11 Jul 2016

Contact author: b skoric at tue nl

Available format(s): (-- withdrawn --)

Note: Mistakes corrected. Claims weakened.

Version: 20160711:115031 (All versions of this report)

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