Ultrahigh-speed all-optical data real-time encryption/decryption systems and methods based on composite logic

Abstract

In order to solve the problems in the prior art, for example, all-optical data in the physical layer is easy to crack, and it is difficult to encrypt ultrahigh-speed data in real time, the invention provides ultrahigh-speed all-optical data real-time encryption/decryption systems and methods based on composite logic. The encryption method comprises the following steps: (1) generating a first electrical domain pseudo-random sequence and a reference clock; (2) loading the first electrical domain pseudo-random sequence onto a pulse laser carrier output by a first laser to produce an optical domain random encryption key; (3) injecting the optical domain random encryption key and to-be-encrypted ultrahigh-speed all-optical data together into a first optical fiber amplifier for optical power amplification; (3) injecting the amplified optical domain random encryption key and the amplified ultrahigh-speed all-optical data together into a first high-nonlinearity optical fiber to produce different logic in real time between the optical domain random encryption key and the ultrahigh-speed all-optical data; and (4) carrying out filtering at different wavelengths at the output end of the first high-nonlinearity optical fiber, and coupling two filtered wavelengths to form an optical cipher text with composite logic.

Description

technical field [0001] The invention belongs to the technical field of all-optical networks, and in particular relates to a system and method for real-time encryption / decryption of ultra-high-speed all-optical data at the physical layer of an all-optical network. Background technique [0002] With the construction of ultra-high-speed and large-capacity optical transmission networks and the improvement of the cost-effectiveness of IP networks, many extremely sensitive information, such as financial transactions and medical records, have begun to be transmitted through the Internet. Modern encryption algorithms are mainly oriented to the network layer, transport layer or session layer, and the security encryption technology of the physical layer has not attracted too much attention. Therefore, the current all-optical network physical layer data transmission is an open mode, ultra-high-speed all-optical data and network control commands etc. are not encrypted, so there is a hug...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the existing physical layer all-optical data is easy to crack and it is difficult to encrypt ultra-high-speed data in real time, the present invention provides a system and method for real-time encryption / decryption of ultra-high-speed all-optical data based on composite logic

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