An Improved Fragile Watermarking Method for Tamper Detection in RFID Tag

Tampering of RFID (Radio Frequency Identification) tag data results in misinterpretation of the object to which the tag is attached. Due to the advantages offered by RFID in the field of contactless auto identification, it is being used in the widespread range of applications. With growing adoption of RFID in industries, supply chain management, healthcare systems, security systems, government sectors, threats to take undue benefits from RFID systems are also increasing. Tag data tampering is one of that in which by changing the tag contents attackers can mislead the organisations adopting RFID system in their workflow. Detection of such tampering is essential to continue use of RFID system reliably. In this paper we have discussed the existing work of embedding a fragile watermark in the tag for tamper detection and proposed an improved method to overcome the shortcomings observed in the existing work.