Security-enhanced ultra-high-order QAM quantum noise stream cipher assisted by intensity and phase chaotic encryption
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View abstract on PubMed
Summary
This summary is machine-generated.This study introduces an enhanced quantum noise stream cipher (QNSC) using ultra-high-order Quadrature Amplitude Modulation (QAM) and chaotic encryption. The novel method significantly boosts security and masking capabilities for high-speed optical communication systems.
Area Of Science
- Optical Communications
- Quantum Cryptography
- Information Security
Background
- Quantum noise stream cipher (QNSC) systems face security challenges.
- Quadrature Amplitude Modulation (QAM) is crucial for high-capacity optical transmission.
- Enhancing data security in high-speed communication is paramount.
Purpose Of The Study
- To propose a novel QAM quantum noise stream cipher (QNSC) scheme.
- To enhance security through ultra-high-order QAM and chaotic encryption.
- To improve the number of masked signals (NMS) and reduce detection failure probability (DFP).
Main Methods
- Encryption of low-order QAM signals to ultra-high-order QAM using a pre-shared seed key (Y-00 protocol).
- Concealment of intensity and phase information via nonlinear chaotic sources.
- Utilizing open-loop chaotic synchronization for decryption.
Main Results
- Numerical verification in 112 Gbit/s (16QAM) and 168 Gbit/s (64QAM) systems.
- Achieved transmission distances of 600 km and 150 km (7% HD-FEC), and 1000 km and 350 km (20% SD-FEC).
- Demonstrated significantly higher NMS and lower DFP compared to traditional QAM/QNSC systems.
Conclusions
- The proposed ultra-high-order QAM QNSC scheme offers enhanced security.
- Chaotic encryption effectively conceals signal information, improving robustness.
- This scheme presents a promising strategy for secure high-speed optical communication.
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