eMARP: Enhanced Mobile Agent for RFID Privacy Protection and Forgery Detection

We are sure that RFID system should be a widely used automatic identification system because of its various advantages and applications. However, many people know that invasion of privacy in RFID system is a still critical problem that makes it difficult to be used widely. Many works for solving this problem have focused on developing light-weight cryptographic modules inside of an RFID tag and building communication protocols with the reader or the back-end server. Another approach is use of proxy agents that control communications between the tag and the reader for protecting privacy. In this paper, we present an enhanced version of MARP scheme. We modified the original MARP scheme for reducing the probability of preventing attacker's eavesdropping and for reducing the communication number of tags. And back-end servers can authenticate mobile agents more easily using public key cryptography in this scheme. Enhanced MARP scheme guarantees not only privacy protection but also forgery detection, and it only needs slight modification in the current tag hardware.