A Security RFID Authentication Protocol Based on Hash Function

In RFID system, a critical issue is security and privacy problem. Firstly, several typical methods to against security and privacy problems are introduced, then based on this protocols, and aim at the shortages in them and other improved ones which provided by some literatures, we propose a new improved scheme based on hash function. The modified scheme resists illegal access, tracking, eavesdropping, impersonation and replay attack, fits for the case which the number of tags is large and is security and efficiency.