Secure quantum key distribution with a subset of malicious devices
arXiv:2006.14337 · doi:10.1038/s41534-020-00358-y
Abstract
The malicious manipulation of quantum key distribution (QKD) hardware is a serious threat to its security, as, typically, neither end users nor QKD manufacturers can validate the integrity of every component of their QKD system in practice. One possible approach to re-establish the security of QKD is to use a redundant number of devices. Following this idea, we introduce an efficient distributed QKD post-processing protocol and prove its security in a variety of corruption models of the possibly malicious devices. We find that, compared to the most conservative model of active and collaborative corrupted devices, natural assumptions lead to a significant enhancement of the secret key rate and considerably simpler QKD setups. Furthermore, we show that, for most practical situations, the resulting finite-size secret key rate is similar to that of the standard scenario assuming trusted devices.
arXiv comment35 pages, 6 figures
References in corpus (12)
- The Security of Practical Quantum Key Distribution
- Device-independent security of quantum cryptography against collective attacks
- Secure quantum key distribution with realistic devices
- Secure Quantum Key Distribution
- Field test of quantum key distribution in the Tokyo QKD Network
- Measurement device independent quantum key distribution over 404 km optical fibre
- Fully device independent quantum key distribution
- Concise Security Bounds for Practical Decoy-State Quantum Key Distribution
- Leftover Hashing Against Quantum Side Information
- Making the decoy-state measurement-device-independent quantum key distribution practically useful
- Memory Attacks on Device-Independent Quantum Cryptography
- Experimental quantum key distribution secure against malicious devices
Cited by in corpus (8)
- Advances in device-independent quantum key distribution
- Security of device-independent quantum key distribution protocols: a review
- Security of quantum key distribution with intensity correlations
- Scalable authentication and optimal flooding in a quantum network
- Experimental quantum key distribution secure against malicious devices
- Quantum key distribution with imperfectly isolated devices
- Sharp finite statistics for quantum key distribution
- Quantum Key Distribution by Quantum Energy Teleportation