The Throughput Bottleneck of Quantum-Secure Communication Links: Analysis and Mitigation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00377616" target="_blank" >RIV/68407700:21230/24:00377616 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/TCOMM.2024.3394746" target="_blank" >https://doi.org/10.1109/TCOMM.2024.3394746</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TCOMM.2024.3394746" target="_blank" >10.1109/TCOMM.2024.3394746</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Throughput Bottleneck of Quantum-Secure Communication Links: Analysis and Mitigation

Popis výsledku v původním jazyce

The use of quantum key distribution (QKD) to improve security may impact the quality of service (Qos) of high rate classical data links. The key generation process with an empty buffer can be modeled as a queuing system, and data throughput limits can be determined using queueing theory to assess the impact on the QoS. The proposed key generation model is based on an on-demand paradigm. Based on the results of this study, a discrete variable (DV)-QKD-secured link could be designed using the data rate bounds to guarantee a given QoS. Furthermore, we validate the derived bounds by comparing the theoretical derivations with simulations. We show that in a one-time-pad system, the achievable throughput approaches 0.59 times the secret key rate as the key length increases. In the case of a key scheme with key reuse, the throughput is asymptotically linear with the number of key reuses, and the slope of the curve corresponds to the secret key rate multiplied by a function of the protocol and channel characteristics. The analysis is carried out on optical fiber and free-space links.

Název v anglickém jazyce

The Throughput Bottleneck of Quantum-Secure Communication Links: Analysis and Mitigation

Popis výsledku anglicky

The use of quantum key distribution (QKD) to improve security may impact the quality of service (Qos) of high rate classical data links. The key generation process with an empty buffer can be modeled as a queuing system, and data throughput limits can be determined using queueing theory to assess the impact on the QoS. The proposed key generation model is based on an on-demand paradigm. Based on the results of this study, a discrete variable (DV)-QKD-secured link could be designed using the data rate bounds to guarantee a given QoS. Furthermore, we validate the derived bounds by comparing the theoretical derivations with simulations. We show that in a one-time-pad system, the achievable throughput approaches 0.59 times the secret key rate as the key length increases. In the case of a key scheme with key reuse, the throughput is asymptotically linear with the number of key reuses, and the slope of the curve corresponds to the secret key rate multiplied by a function of the protocol and channel characteristics. The analysis is carried out on optical fiber and free-space links.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20202 - Communication engineering and systems

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Communications

ISSN

0090-6778

e-ISSN

1558-0857

Svazek periodika

72

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

6416-6426

Kód UT WoS článku

001340385300021

EID výsledku v databázi Scopus

2-s2.0-85192148892