Optical encryption and decryption method, device and system

Abstract

The invention discloses an optical encryption and decryption method, device and system. The method includes the following steps: optically modulating a monochromatic laser beam in a measurement optical path to obtain a prefabricated coherent light source, and the prefabricated coherent light source corresponds to an incident light intensity; Obtain the corresponding transmitted light intensity after the prefabricated coherent light source transmits the target object, and calculate the transmittance of the target object according to the transmitted light intensity and the incident light intensity; according to the transmittance of the target object and the light intensity of the reference optical path, according to the preset The encryption formula encrypts the target object; according to the transmitted light intensity in the measurement light path and the light intensity in the reference light path, the target object is decrypted according to the preset decryption formula. The optical encryption and decryption method proposed by the invention has high encryption efficiency and security characteristics, and improves practical application performance.

Description

technical field [0001] The invention relates to the field of optical information security, in particular to an optical encryption and decryption method, device and system. Background technique [0002] With the rapid development of computer technology, cloud computing, Internet of Things and other technologies, my country has now entered the era of big data on the Internet. How to ensure the effective transmission of large amounts of data and the information security of data has become a major problem in the field of information technology today. In recent years, a new type of optical encryption technology has attracted widespread attention. Since this technology has the characteristics of encryption through multiple dimensions such as phase, wavelength, and frequency, it has been widely used in the fields of information security and image encryption. In order to further improve the anti-interference of optical encryption technology, a kind of optical encryption technology ...

AI Technical Summary

Problems solved by technology

[0005] (1) Due to the non-orthogonal characteristics of the thermal light source, a high-quality optical encryption of the target object needs to repeatedly collect a large amount of data, resulting in low information encryption efficiency of the system;

[0006] (2) Since the distribution characteristics of thermal light sources will change with different propagation distances, this is not conducive to the encryption of remote target objects and dynamic objects

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