Application of Three Levels Associated Number in Cigarette Defending against Fake
Yang Sheng-li · Packaging Engineering · 2007
Cigarette defending against fake is an important and difficult problem of our country's securi- ty industry.Based on the research of this problem,a new tree levels digital associated number project was put forward.Its main idea was that,based on cigarette packaging characteristics,different keys were used to encrypt the information extracted from products,and different digital cedes were designed,which can be in- quired independently or interrelated,for different cigarette packets to help consumers make sure that the cig- arettes they bought are not fakes.