Barcode generation system based on Hash function

Abstract

A barcode is a coding system used for individual identification in a coding and decoding field. An EAN (International Article Numbering Association)-13 code can be easily counterfeited. A barcode generation system based on a Hash function realizes anti-counterfeiting authentication through a Hash function. The system also adopts the EAN-13 code, defines content represented by each code bit in a self-actuated way, and adopts a 6+6+1 way. The first six bits of batch numbers CT6 of the barcode are obtained through a way that the high 19bit of a current computer clock (CT) is intercepted and is converted into six bits of decimal numbers; and the middle six bits of authentication codes (AC) of the barcode are obtained through a way that front 19bit output by a Hash function is intercepted and is converted into the six bits of decimal numbers, i.e. AC=MSB (Most Significant Bit)19[Hash(CT||Ki)], wherein Ki is a password set for a commodity by a manufacturer and contains more than eight characters, || means cascade operation, (h) in the MSB(h) means that the front i-bit of h is intercepted, and a generation way of the last bit of check code of the barcode is identical with the generation way of the common EAN-13 code. The system also can be used in a common code reader, can improve the management efficiency of the commodity by the manufacturer, saves cost, realizes the anti-counterfeiting authentication of the commodity, is mainly used for generating the barcode required for the commodity, and realizes the logistics management, the market monitoring and the statistical decision of the commodity.

Description

technical field [0001] The barcode generation system based on the Hash function is a barcode generation technology in the field of encoding and coding (G09C), which is mainly used to generate the barcodes required by commodities, and realize the logistics management, market monitoring and statistical decision-making of commodities. Background technique [0002] Barcode is currently widely used in the coding system of individual identification, divided into one-dimensional code and two-dimensional code, each has its advantages and disadvantages. [0003] (1) The data capacity of the two-dimensional code is larger, but due to the larger data volume, the machine requirements for information storage become higher; [0004] (2) One-dimensional codes are easier to identify than two-dimensional codes; [0005] (3) The traditional uniform identification of commodities is currently identified by one-dimensional codes, while most of the identity verification identifications that have...

AI Technical Summary

Problems solved by technology

Barcode technology is an important means to achieve logistics management, but EAN-13 codes are easily forged and pirated

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