A CRC-Based Lightweight Authentication Protocol for EPCglobal Class-1 Gen-2 Tags

摘要

Authentication is one of the most important technologies to protect the privacy and security of RFID systems. The EPCglobal Class-1 Gen-2 specification is an important standard for RFID. The tags conforming to this standard have limited computing and store resources, and no more attentions are paid to their security and privacy. So the application of these tags is not secure. But this kind of tags is considered as the main stream for RFID applications. In order to solve the secure problems for this kind of RFID tags we propose a lightweight authentication protocol based on CRC, which can assure forward security and prevent information leakage, location tracing, eavesdropping, DOS attack, replay attack, and spoofing. This protocol avoids CRC collision by reasonably dividing the tag's identification information into two different parts and it enhances the mutual authentication strength between tags and readers by dual authentications. This protocol only uses the computing resources embedded in tags and it is very suitable to low-cost RFID systems.