Experimental Side Channel Analysis of BB84 QKD Source
arXiv:2106.10500 · doi:10.1109/JQE.2021.3111332
Abstract
A typical implementation of BB84 protocol for quantum communication uses four laser diodes for transmitting weak coherent pulses, which may not have the same characteristics. We have characterized these lasers for mismatch in various parameters such as spectral width, pulse width, spatial mode, peak wavelength, polarization and their arrival times at the receiver. This information is utilized to calculate possible information leakage through side channel attacks by evaluating mutual information between source and eavesdropper. Based on our experimental observations of cross correlation between parameter values for different laser diodes, we suggest ways to reduce information leakage to Eve.
References in corpus (23)
- Quantum Cryptography
- Quantum cryptography: Public key distribution and coin tossing
- The Security of Practical Quantum Key Distribution
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- Measurement-device-independent quantum key distribution
- Advances in Quantum Cryptography
- Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
- Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
- Hacking commercial quantum cryptography systems by tailored bright illumination
- Measurement device independent quantum key distribution over 404 km optical fibre
- Quantum cryptography protocols robust against photon number splitting attacks for weak laser pulses implementations
- Fully device independent quantum key distribution
- High rate, long-distance quantum key distribution over 250km of ultra low loss fibres
- Measurement-device-independent quantum key distribution over untrustful metropolitan network
- Trojan-horse attacks threaten the security of practical quantum cryptography
- Breaking a quantum key distribution system through a timing side channel
- Risk analysis of Trojan-horse attacks on practical quantum key distribution systems
- Attacks on practical quantum key distribution systems (and how to prevent them)
- Measurement-Device-Independent Twin-Field Quantum Key Distribution
- Quantum cryptography: key distribution and beyond
- Implementation vulnerabilities in general quantum cryptography
- Measuring Mueller matrix of an arbitrary optical element with a fixed set of polarization optics
- Critical side channel effects in random bit generation with multiple semiconductor lasers in a polarization-based quantum key distribution system