Original title: Kvantová kryptografie
Translated title: Quantum cryptography
Authors: Turčanová, Klára ; Dejdar, Petr (referee) ; Münster, Petr (advisor)
Document type: Bachelor's theses
Year: 2023
Language: slo
Publisher: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií
Abstract: [slo] [eng]
Bakalárska práca sa venuje kvantovej kryptografií. V teoretickej čast je rozbor problematiky bezpečnej distribúcie kľúčov v infraštruktúre optických vláknových sietí. Analyzované sú metódy ako kvantová distribúcia kľúčov (QKD) alebo distribúcia kľúčov na základe parametrov optického kanálu, včetne opisu bezpečnostných a technických obmedzení metód. Okrem distribúcie kľúčov sa práca snaží aj o priblíženie základných princípov optickej infraštruktúry využívanej pri QKD a v neposlednom rade aj postkvantovej kryptografii (včetne porovnania s kvantovou kryptografiou a aktuálnych protokolov). V rámci praktickej časti bol preukázaný vplyv makroohybu vlákna a odrazivosti u konektorov na chod kvantového systému. Ďalej bolo preukázané, že teplota a svetlo pôsobiace na optickú infraštruktúru QKD nemajú zásadný vplyv. The bachelor thesis focuses on quantum cryptography. In the theoretical part, there is an analysis of secure key distribution in the fiber-optic infrastructure. Methods such as quantum key distribution (QKD) or physical layer secret key generation for fiber-optic networks are analyzed, including a description of the security and technical limitations of the methods. The thesis also attempts to interpret some basic principles of the optic infrastructure used in QKD. In addition to the distribution of keys, the thesis also tries to approximate the basic principles of the optic infrastructure used in QKD and, last but not least, post-quantum cryptography (including a comparison with quantum cryptography and current protocols). In the practical part, the effect of the macrobending of the fiber and the reflectivity of the connectors on the operation of the quantum system was demonstrated. It was also demonstrated that temperature and light acting on the QKD optic infrastructure do not have a fundamental effect.
Keywords: BB84; COW; optical connectors; physical layer secret key generation for fiber-optical networks; post-quantum cryptography (PQC); quantum cryptography; quantum key distribution (QKD); return loss; security; single-mode fiber; technical limitations; the reflectivity of connectors

Institution: Brno University of Technology (web)
Document availability information: Fulltext is available in the Brno University of Technology Digital Library.
Original record: http://hdl.handle.net/11012/212616

Permalink: http://www.nusl.cz/ntk/nusl-530846


The record appears in these collections:
Universities and colleges > Public universities > Brno University of Technology
Academic theses (ETDs) > Bachelor's theses