What is the significance of the secret key rate (K) in QKD, and how is it bounded by the entropies shared between the reference system and the eavesdropper, and the reference system and Bob's system?
Saturday, 15 June 2024
by EITCA Academy
In the field of quantum cryptography, the secret key rate in Quantum Key Distribution (QKD) is a critical parameter that quantifies the efficiency and security of the key generation process. The secret key rate represents the rate at which secure cryptographic keys can be generated between two parties, typically referred to as Alice and Bob,
How is the fidelity between the shared state (rho_{AB}) and the maximally entangled state (|Phi^+rangle) used to determine the security of the BB84 protocol?
Saturday, 15 June 2024
by EITCA Academy
The fidelity between the shared state and the maximally entangled state is a critical metric in determining the security of the BB84 protocol, a cornerstone of quantum key distribution (QKD). To understand this relationship, it is essential to consider the fundamentals of quantum cryptography, the principles underlying the BB84 protocol, and the role of entanglement
- Published in Cybersecurity, EITC/IS/QCF Quantum Cryptography Fundamentals, Security of Quantum Key Distribution, Security of BB84, Examination review
Tagged under:
Cybersecurity, Fidelity, Quantum Bit Error Rate, Quantum Entanglement, Quantum Mechanics, Secret Key Rate