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- Title
Enhancing eavesdropping detection in quantum key distribution using disentropy measure of randomness.
- Authors
Castro, G. S.; Ramos, R. V.
- Abstract
In quantum key distribution (QKD) protocols, the action of an eavesdropper during the quantum communication is inferred from the bit error rate measured by Alice and Bob. On the other hand, in a recent work, the disentropy of the autocorrelation function was used to measure the amount of randomness of discrete and continuous signals. In this direction, the present work proposes a slight modification of the BB84 QKD protocol that will permit the detection of eavesdropping activities by the calculation of the randomness of the bit sequence obtained by Bob after the basis reconciliation stage. Since it is impossible to distinguish between the errors caused by an eavesdropper and the errors produced by imperfections of the optical channel and optoelectronic devices, a second strategy for eavesdropping detection can improve the security of QKD setups.
- Subjects
EAVESDROPPING; QUANTUM communication; BIT error rate; OPTOELECTRONIC devices
- Publication
Quantum Information Processing, 2022, Vol 21, Issue 2, p1
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-022-03422-y