Paper 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.

Note: Mistakes corrected. Claims weakened.

Metadata
Available format(s)
-- withdrawn --
Publication info
Preprint. MINOR revision.
Keywords
quantum key distribution
Contact author(s)
b skoric @ tue nl
History
2016-07-11: withdrawn
2016-05-06: received
See all versions
Short URL
https://ia.cr/2016/446
License
Creative Commons Attribution
CC BY
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