Optical fiber encryption method based on FPGA

An encryption method and optical fiber technology, applied in the field of encryption, can solve the problems of easy data loss and imperfect frame structure, and achieve the effect of ensuring link security and avoiding deciphering and eavesdropping.

Active Publication Date: 2021-06-25
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single AES encryption used in this project has already been broken, and the design of the frame structure is not perfect, the data is easily lost, and there are hidden dangers

Method used

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  • Optical fiber encryption method based on FPGA
  • Optical fiber encryption method based on FPGA
  • Optical fiber encryption method based on FPGA

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Embodiment Construction

[0051] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0052] Depend on figure 1 and image 3 As can be seen, the FPGA-based optical fiber encryption method of the present invention comprises the following steps:

[0053] (1) Obtain plaintext PT;

[0054] (2) Obtain the key KT of the FPE encryption mode with the Logistic model;

[0055] (3) Use the key KT to encrypt the plaintext PT to obtain the ciphertext C;

[0056] (4) Pipeline accelerated ciphertext C;

[0057] (5) Convert the bit width of the ciphertext C data;

[0058] (6) Send data using the frame structure customized by the Aurora protocol;

[0059] (7) The receiving end caches the received data and strips the frame structure;

[0060] (8) The receiving end decodes the ciphertext C to obtain the plaintext PT.

[0061] Depend on figure 2 It can be seen that the step (2) of the present invention adopts the Feistel structure, and t...

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Abstract

The invention discloses an optical fiber encryption method based on an FPGA. The method comprises the following steps: (1) acquiring a plaintext PT; (2) acquiring a secret key KT of an FPE encryption mode with a Logistic model; (3) encrypting the plaintext PT by using the key KT to obtain a ciphertext C; (4) carrying out pipeline acceleration on the ciphertext C; (5) converting the bit width of the ciphertext C data; (6) sending data by adopting a frame structure customized by an Aurora protocol; (7) enabling the receiving end to cache the received data and peel off the frame structure; (8) enabling the receiving end to decode the ciphertext C to obtain the plaintext PT. According to the invention, the link security of communication is effectively ensured, and the video stream data is prevented from being decoded and eavesdropped; And the overall communication rate can reach 6.25 Gpbs.

Description

technical field [0001] The invention relates to an encryption method, in particular to an FPGA-based optical fiber encryption method. Background technique [0002] Optical fiber communication is widely used because of its low loss and high anti-interference. With the increasing requirements for bandwidth and speed, high-speed communication has become a basic requirement. The traditional optical communication system is to ensure the transmission bandwidth and throughput without considering the protection of information security. In recent years, due to the leakage of a large number of user data, great losses have been caused, and information security has become the focus of attention. [0003] At present, the research on optical fiber encryption mostly adopts the method of quantum encryption. At present, there are many loopholes in actual engineering at home and abroad, and it is impossible to achieve absolute security in optical fiber communication, and there is a long way...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/516H04J14/02H04Q11/00
CPCH04B10/516H04Q11/0062H04J14/02
Inventor 周立胡芳仁
Owner NANJING UNIV OF POSTS & TELECOMM
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