Secure and high-speed key distribution system and method
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A key distribution system and key distribution technology, applied in the field of key distribution, can solve the problems of slow key distribution rate and poor security of key distribution technology
Active Publication Date: 2016-01-20
TAIYUAN UNIV OF TECH
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[0003] In order to solve the problems of poor security and slow key distribution rate in the existing key distribution technology, the present invention provides a safe and high-speed key distribution system and method
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Embodiment 1
[0037] A safe and high-speed key distribution system, including broadband noise-like driving source 1, 1×2 main fiber coupler 2, 1×2 left fiber coupler 3a1, 1×2 right fiber coupler 3b1, 2 left filter selectors frequency converter, 2 right filter frequency selectors, 2 left optical feedback chaotic semiconductor lasers, 2 right optical feedback chaotic semiconductor lasers, left electro-optical modulation system 6a1, right electro-optical modulation system 6b1, left storage channel 7a1, right storage channel 7b1 , 2×1 left fiber coupler 8a1, 2×1 right fiber coupler 8b1, left photodetector 9a1, right photodetector 9b1, left analog-to-digital converter 10a1, right analog-to-digital converter 10b1, left memory 11a1, right memory 11b1, common channel 12;
[0038] Among them, the output end of broadband noise-like driving source 1 is connected to the input end of 1×2 main fiber coupler 2; the two output ends of 1×2 main fiber coupler 2 are respectively connected to the input of 1×2 ...
Embodiment 2
[0052] A safe and high-speed key distribution system, including broadband noise-like driving source 1, 1×2 main fiber coupler 2, N-1 1×2 left fiber couplers, N-1 1×2 right fiber couplers , N left filter frequency selectors, N right filter frequency selectors, N left optical feedback chaotic semiconductor lasers, N right optical feedback chaotic semiconductor lasers, left electro-optic modulation system 6a1, right electro-optic modulation system 6b1, left storage channel 7a1, right storage channel 7b1, N-1 2×1 left fiber couplers, N-1 2×1 right fiber couplers, left photodetector 9a1, right photodetector 9b1, left analog-to-digital converter 10a1, Right analog-to-digital converter 10b1, left memory 11a1, right memory 11b1, common channel 12; N is a positive integer, and N≥3;
[0053] Among them, the output end of the broadband noise-like driving source 1 is connected to the input end of the 1×2 main fiber coupler 2; the two output ends of the 1×2 main fiber coupler 2 are respect...
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Abstract
The invention relates to the key distribution technology in the secure communication field and particularly provides a secure and high-speed key distribution system and method. The According to the technical scheme of the invention, the problems in the prior art that the conventional key distribution technology is poor in security and slow in key distribute on speed can be solved. The secure and high-speed key distribution system comprises a broadband noise-like drive source, a 1*2 main optical fiber coupler, a 1*2 left optical fiber coupler, a 1*2 right optical fiber coupler, two left filtering frequency selectors, two right filtering frequency selectors, two left optical feedback chaotic semiconductor lasers, two right optical feedback chaotic semiconductor lasers, a left electro-optical modulation system, a right electro-optical modulation system, a left storage channel, a right storage channel, a 2*1 left optical fiber coupler, a 2*1 right optical fiber coupler, a left photoelectric detector, a right photoelectric detector, a left analog-to-digital converter, a right analog-to-digital converter, a left memory, a right memory and a common channel. The above system and method can be applied to the filed of secure communication.
Description
technical field [0001] The invention relates to key distribution technology in secure communication, in particular to a safe and high-speed key distribution system and method. Background technique [0002] Confidential communications are related to national security, social stability and many other aspects. As the key to secure communication, it is extremely urgent and important to study safe and high-speed key distribution technology. Existing key distribution technologies mainly include the following: 1. Quantum key distribution (QKD) is an absolutely secure key distribution scheme. Discovered by legitimate communication parties. However, there are still some technical difficulties in QKD, such as the difficulty in preparing an efficient single-photon source and the low rate of key distribution (ReviewsofModernPhysics, vol.74, no.1, pp.145-195, 2002). 2. The British scholar AtallaEl-Taher1 proposed to achieve secure key distribution by filtering the Raman ultra-long cav...
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