Print Email Facebook Twitter Data Origin Authentication And The Classical Data Plane of A Quantum Network Link Title Data Origin Authentication And The Classical Data Plane of A Quantum Network Link Author Abrahams, Joël (TU Delft Electrical Engineering, Mathematics and Computer Science) Contributor Wehner, S.D.C. (mentor) Elkouss Coronas, D. (graduation committee) Erkin, Z. (graduation committee) Degree granting institution Delft University of Technology Programme Computer Science Date 2022-02-03 Abstract Quantum networks allow multiple devices to exchange information encoded within quantum systems.Such quantum networks use classical control messages to coordinate entanglement between nodes.Third parties which can forge such control messages may interfere with the workings of quantum links, however:They may either perform fraudulent requests for entanglement, destroying local quantum memory of nodes as a result, or interfere with the inner workings of protocols within the quantum stack targeting the availability of the link(s).We, therefore, conclude that all link and physical layer control messages must be transmitted via authenticated channels.Typically one uses a Message Authentication Code (MAC) to do so, which takes as input a message and outputs a tag which is transmitted alongside the message.Additionally, it takes as input a unique number each time (nonce) to prevent replay-type attacks.In this work, we first investigate the use of information-theoretic MACs combined with quantum key distribution (QKD) to authenticate control messages. We find that the fastest QKD solutions provide key material at a rate that is sufficient to not become a bottleneck in current quantum links.Second, we survey multiple computationally secure MAC solutions and benchmarks to get an indication of their performance when authenticating short messages.While not information-theoretically secure, their latency is generally speaking greater than or equal to that of information-theoretic solutions.Finally, we augment the existing simulation of a single quantum link by Dahlberg et al. by inserting delays based on the performance of these MACs.The performance of the link is evaluated using the mean throughput:The rate at which successfully entangled pairs are delivered.We find that the introduction of transmission time overhead, without any authentication, causes a noticeable decrease in throughput of the link. When considering an authenticated channel that uses SipHash (a popular MAC) we find that throughput decreases even further, though less significantly. Therefore, the overall decrease in throughput appears to not be detrimental to the working of the quantum link, which remains functional even when the classical channel is authenticated. Subject Quantum networksData origin authenticationClassical data planeSimulation To reference this document use: http://resolver.tudelft.nl/uuid:f0652148-be1e-4a54-9153-ee8ff9fa1481 Part of collection Student theses Document type master thesis Rights © 2022 Joël Abrahams Files PDF msc_thesis_joel_abrahams.pdf 4.68 MB Close viewer /islandora/object/uuid:f0652148-be1e-4a54-9153-ee8ff9fa1481/datastream/OBJ/view