Secure key distribution is one of the most crucial issues for the security of communication systems. However, it is extremely challenging to realize the gigabit key distribution required for high-speed secure communication. Targeting high-speed secure key distribution, we propose a novel scheme based on chaos synchronization and optical frequency comb technology. By the multi-channel multiplexing, final security key rate is greatly extended to gigabit. The feasibility and performance of the proposed high-speed secure key distribution scheme are verified by numerical simulations.
Optical chaotic communication as one of the encryption communication technologies has been get a great development in recent. However, various of hacking attacks from eavesdropper are threatening security of chaotic communication system. Therefore, we propose an novel system which combined with chaotic encryption module and phase perturbation module targeting to achieve a security-enhance chaotic communication system. Simulation result demonstrate the system provide a high-security transmitting performance with on a bit rate over Gb/s and satisfactory BER is achieved.
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