Advances in Computer Science : an International Journal (ACSIJ)
Recently, due to widespread use of Radio Frequency IDentification (RFID) systems in personal applications, security and privacy of these systems have got more attention. In order to provide security and privacy of RFID users, different authentication protocols have been proposed. In 2014, the researcher proposed an improved authentication protocol for RFID systems. They claimed that their protocol is secure against various attacks. In this paper, the authors investigate security and privacy of their protocol. It is shown that their protocol is not safe against several attacks including secret parameters reveal, tag impersonation, data integrity, desynchronization and also it cannot provide user privacy.