Research on a Traceability Scheme for a Grain Supply Chain

The frequent occurrence of food safety accidents and the globalization import export circulation make it very important to establish a traceability system. Due bulk low-value characteristics grain, is difficult achieve in single unit like meat products; as grain has longer supply chain, involving much more links even complicated factors, easy cause information disconnection. In response above problems, this paper done following tasks: First, propose RFID-based chain model, which mainly describes flow system, secondly, combination with GTIN coding standard GS1 stage code set for each batch grains at link, providing method uniquely identifying that improve accuracy traceability. addition, order enable consumers inquire all detailed through code, PRESENT algorithm format-preserving are used encrypt codes link generate final code. Finally, security performance analysis proposed scheme was carried out. results show safe effective, ensuring system chain.