Abstract

Computationally constrained environments like Rfid, sensors and hand held devices require noncontact automatic identification technology. The wireless communication channel of these systems is vulnerable to various malicious attacks and has limited calculation resources and small storage capacity, aimed at these problems, a HMAC-based lightweight authentication protocol has been proposed. The main aim of the proposed protocol is that the calculation capacity and storage space of reader should be utilized efficiently, and the demand for the capacity of calculation and storage of device should be reduced. The analysis of security and performance show that the new protocol can resist some malicious attacks, such as spoofing attack, replay attack, tracking, etc., and is suitable for low-cost and computationally constrained system.