Volume holographic four-dimensional code anti-counterfeiting implementation method

Abstract

The invention discloses a volume holographic four-dimensional code anti-counterfeiting implementation method. The method comprises the following steps: generating plaintext information to be encrypted; randomly generating asymmetrically encrypted public key and private key pairs; encrypting the plaintext to be encrypted by adopting the public key to obtain encrypted ciphertext information; encoding the ciphertext information through the three-dimensional two-dimensional codes in the x, y and z directions to obtain an encrypted three-dimensional two-dimensional code; encoding the private key through the code element combination of the RGB three primary colors to form a color three-dimensional four-dimensional code; generating a hologram of the four-dimensional code through computer holography; loading the hologram of the four-dimensional code through a spatial light modulator; through RGB three-color laser multiplexing, recording a hologram of a four-dimensional code on a volume holographic material in an interference mode. According to the method, the imitation difficulty is increased, the encryption performance and the data information capacity are improved, and finally the anti-counterfeiting and encryption performance is improved.

Description

technical field [0001] The invention relates to the fields of holographic anti-counterfeiting and encryption, more specifically, a method for realizing anti-counterfeiting of a volume holographic four-dimensional code. Background technique [0002] At present, most commodities on the market need to use anti-counterfeiting technology. Anti-counterfeiting is an indispensable part of enterprise production, and it can even be said to have played a vital role. Commodity anti-counterfeiting is widely used in high-end equipment, tobacco and alcohol industry, mint industry, luxury goods, clothing, medical equipment, pharmaceuticals, food and so on. [0003] However, there are still some problems and demands in anti-counterfeiting technology at present. At present, anti-counterfeiting trademarks on the market mainly use anti-counterfeiting codes, two-dimensional codes, and two-dimensional holographic patterns. Although the cost is low, they are easy to be cracked and counterfeited d...

AI Technical Summary

Problems solved by technology

Traditional holographic anti-counterfeiting is an anti-counterfeiting technology based on two-dimensional patterns or pseudo-3D displays, and its imitation performance still needs to be improved

Images