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An optical tag anti-counterfeiting method based on pseudo-random number stream cipher

A pseudo-random number and optical tag technology, applied in the field of optical communication, can solve problems such as counterfeit optical tags

Active Publication Date: 2020-04-28
SHAANXI WHYHOW INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the openness of registration of optical tags, anyone can purchase or apply for optical tags to publish personal services or information, which creates the possibility of criminals forging optical tags

Method used

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  • An optical tag anti-counterfeiting method based on pseudo-random number stream cipher
  • An optical tag anti-counterfeiting method based on pseudo-random number stream cipher
  • An optical tag anti-counterfeiting method based on pseudo-random number stream cipher

Examples

Experimental program
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Embodiment 1

[0047] Example 1. User U consumes through optical tag L. Before consumption, the mobile phones of L and U have completed GPS-based time synchronization in the early stage, and the two are also installed with the same stream cipher generator. When U registers the business application of the service provider that provides L services, the stream cipher key Send to both parties in the form of digital integers; service data 010001010000101010... Encrypted by stream cipher to obtain encrypted data:

[0048] 001010101010010011…

[0049] The above data is displayed on L in a rolling cycle with a period of 2 seconds; U reads the above data through his mobile phone:

[0050] 001010101010010011…001010101010010011…001010101010010011…

[0051] Use the key stream to decrypt the above data to get the following data

[0052] 010001010000101010…010001010000101010…010001010000101010…

[0053] Through the search of the start bit identifier 010001, one cycle of data is obtained:

[0054] 0100...

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Abstract

The invention provides an optical anti-fake method based on the pseudo-random number flow cipher. The personal portable smart device and the legitimate optical label device are provided with the same configuration of the pseudo random number flow cipher generator. The legitimate optical label data flow is encrypted by inputting the cipher key of the pseudo-random number flow into the generator of the pseudo-random number flow password and outputting the encrypted password flow. The optical label data information is encrypted by the pseudo-random number flow cipher, which the encryption method can be widely promoted and used with the open system and the convenient operation.

Description

technical field [0001] The invention relates to optical communication technology, in particular to an optical tag anti-counterfeiting method based on a pseudo-random number stream cipher. Background technique [0002] Optical tags have the advantages of long-distance, loose visible light conditions, strong directivity, and positionability, and the display content of optical tags can be changed online and in real time, thereby providing a large amount of information capacity, which is stronger than traditional two-dimensional code tags. The ability of information interaction provides great convenience for both users and merchants. Due to the openness of registration of optical tags, anyone can publish personal services or information by purchasing or applying for optical tags, which creates the possibility of criminals forging optical tags. Therefore, in order to prevent the illegal forgery of the optical label, it is necessary to provide an anti-counterfeiting method for th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/06H04J3/06G06K7/14
CPCG06K7/1417H04J3/0638H04J3/0661H04L9/0656
Inventor 王晓东方俊李江亮苏爱民
Owner SHAANXI WHYHOW INFORMATION TECH CO LTD
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