Improving the performance of quantum cryptography by using the encryption of the error correction data
arXiv:2306.12347 · doi:10.3390/e25060956
Abstract
Security of quantum key distribution (QKD) protocols relies solely on quantum physics laws, namely, on the impossibility to distinguish between non-orthogonal quantum states with absolute certainty. Due to this, a potential eavesdropper cannot extract full information from the states stored in their quantum memory after an attack despite knowing all the information disclosed during classical post-processing stages of QKD. Here, we introduce the idea of encrypting classical communication related to error-correction in order to decrease the amount of information available to the eavesdropper and hence improve the performance of quantum key distribution protocols. We analyze the applicability of the method in the context of additional assumptions concerning the eavesdropper's quantum memory coherence time and discuss the similarity of our proposition and the quantum data locking (QDL) technique.
References in corpus (20)
- Quantum Cryptography
- Decoy State Quantum Key Distribution
- Advances in Quantum Cryptography
- Practical Decoy State for Quantum Key Distribution
- Distillation of secret key and entanglement from quantum states
- An information-theoretic security proof for QKD protocols
- Unknown Quantum States: The Quantum de Finetti Representation
- Security in Quantum Cryptography
- Incoherent and Coherent Eavesdropping in the 6-state Protocol of Quantum Cryptography
- Fast and simple one-way Quantum Key Distribution
- Lower and upper bounds on the secret key rate for QKD protocols using one--way classical communication
- Locking classical correlation in quantum states
- Secure quantum key distribution with an uncharacterized source
- Quantum channels showing superadditivity in capacity
- Quantum Advantage in Cryptography
- Symmetric blind information reconciliation for quantum key distribution
- Device-independent quantum key distribution secure against adversaries with no long-term quantum memory
- Quantum locking of classical correlations and quantum discord of classical-quantum states
- Post-processing procedure for industrial quantum key distribution systems
- Robust quantum data locking from phase modulation