Quantum digital signatures with quantum-key-distribution components

Petros Wallden, Vedran Dunjko, Adrian Kent, Erika Andersson

Research output: Contribution to journalArticlepeer-review


Digital signatures guarantee the authenticity and transferability of messages and are widely used in modern communication. The security of currently used classical digital signature schemes, however, relies on computational assumptions. In contrast, quantum digital signature (QDS) schemes offer information-theoretic security guaranteed by the laws of quantum mechanics. We present two QDS protocols which have the same experimental requirements as quantum key distribution, which is already commercially available. We also give a security proof for the presented QDS schemes against coherent forging attacks.
Original languageEnglish
Pages (from-to)042304
Number of pages1
JournalPhysical Review A
Publication statusPublished - 1 Apr 2015

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