Abstract
A Radio Frequency Identification (RFID) system is a contactless automatic identification system that uses small and low-cost tags. RFID systems communicate with the tags attached to the objects using radio frequency waves. The major problem with RFID systems is the security problem because the communication between RFID components is wireless. In this paper, we comprehensively discuss the computational cost and vulnerabilities of the security Protocols on RFID systems. We presented an improvement mutual authentication protocol which can prevent the security problems and easy to implement in low-cost passive tags, with low computational cost. The proposed protocol is compatible with the international standard EPC Class-1 Generation-2 standard (ISO 18000-6).