Symmetric Encryption in RFID Authentication Protocol for Strong Location Privacy and Forward-Security

RFID tag carries vital information in their operation and thus concerns on privacy and security issues do arise. The problem of traceability is critical in open radio frequency environments. An adversary can trace and interact with tag and this is referred as tracking. Nevertheless, with a strong authentication mechanism, uprising security problems in RFID systems can be solved. We had demonstrated current vulnerabilities and proposed our authentication mechanism to overcome them. As long as the secret information stays secret, tag forgery is not possible. Targeting RFID tag with short tag ID, we employ a resource friendly symmetric encryption scheme, which is a stream cipher building block to enhance the security features in active type RFID tag.