The Design And Realization Of Preventing-Forgery Code Reader Based On ARM

It's very important problems to beat counterfeit and protecting buyers' benefit, but most of conventional Preventing-forgery techniques don't work well. So that forgerying is very rampancy. In that, some scientific effective measures must be taken.This thesis analyzes thorough much more Preventing-forgery techniques at present, and puts forward one new-style digital Preventing-forgery system based on encrypting and networks communication. This system includes chip used to store the ID of products, corporation database, Preventing-Forgery Code Reader and so on. The chip is electronic label or small singlechip. It is embedded in products, on which there is interface connecting to Preventing-Forgery Code Reader. The one and only ID is brought by corporation. It is stored into the product after encrypting. The communication between the chip and Preventing-forgery Dumaqi must abide specific protocol, or the ID can't be taken out. Some measures must be taken when designing product packaging, so that, the chip is broken in time. It is sure that the ID isn't stealed. The Preventing-Forgery Code Reader is used for reading ID, encrypting, decrypting and networks communication. The information about the products is stored in corporation database, waiting for being visited. This database is encrypted, which will be not visited if the key is wrong. The primary work of this thesis is about designing and realization of Preventing-Forgery Code Reader. It includes the hardware system designing; the realizing, optimizing of arithmetic on microprocessor, and provideing the testing results; designning and demonstrating the key manage system; analyzing the security of this Preventing-forgery system; at last, giving an example of the wireless networks communication.By the research in this thesis, the hardware system of the Preventing-forgery Dumaqi is successful designed, the arithmetic is successful realized and optimized and providing the testing result, at last , the scheme of the wireless networks communication is put forward. Digital Preventing-forgery is one of effective technology at present, so doing some works about it has practical meaning.