Two-dimension code generation method, two-dimension code generation device, two-dimension code verification method and two-dimension code verification device based on CPK (Combined Public Key)

Abstract

The invention discloses a two-dimension code generation method, a two-dimension code generation device, a two-dimension code verification method and a two-dimension code verification device based on a CPK (Combined Public Key). The generation method comprises the following steps that: key information of carriers of two-dimension codes is determined; the key information is signed according to a pre-configured private key, and digital signature information is generated; the digital signature information and the information of the carriers of the two-dimension codes are combined to generate anti-counterfeiting information; and the anti-counterfeiting information is coded according to a two-dimension code coding technology, and two-dimension codes are generated. The verification method comprises the following steps that: the two-dimension codes are decoded, and the digital signature information and the information of the carriers of the two-dimension codes stored in the three-dimension codes are read; the read digital signature information is analyzed to obtain a public key; and the digital signature information is verified according to the public key and the information of the carriers of the two-dimension codes. The authenticity and the completeness of the two-dimension codes are judged through a CPK signature verification protocol, so that the authenticity verification on the anti-counterfeiting information is realized; the verification process of the anti-counterfeiting information is simplified; and the difficulty for verifying the anti-counterfeiting information is reduced.

Description

technical field [0001] The present invention relates to the generation and verification technology of two-dimensional codes, in particular, to a method and device for generating and verifying two-dimensional codes based on CPK (Combined Public Key, combined public key). Background technique [0002] Although the existing anti-counterfeiting technologies are widely used in various fields of production and life, they all have the problems of high implementation cost, high technical difficulty, and easy cloning, especially for bills, securities, certificates, certificates, and diplomas that are closely related to daily life. As well as the anti-counterfeiting technology of some valuable commodities, in the existing anti-counterfeiting technology, although the constantly updated methods of laser anti-counterfeiting, watermarking, special paper ink, metal wire, fluorescent printing, particle accelerator coding, laser coding and other methods are used, due to Driven by huge intere...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the authenticity and integrity of the anti-counterfeiting two-dimensional code information cannot be easily verified in the related art, the present invention proposes a method and device for generating and verifying the two-dimensional code of CPK, which can effectively verify the two-dimensional code Authenticity, realizing the effect of simplifying the verification process of anti-counterfeiting information and reducing the difficulty of verifying anti-counterfeiting information

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