Abstract:

For the low-cost RFID systems, the security and privacy problems are always the research hot spot. In order to protect the users’privacy, the existing security protocols mainly use the Hash function or traditional encryption algorithms to ensure the safety of the tag’s information. Although, to some extent, they guarantee the security of the information, all of them are nothing but ignore protecting the unauthorized tag’s information. For the sake of filling in the gap, a RFID secure authentication protocol based on RBAC is proposed. Through introducing the RBAC mechanism, our proposal can effectively not only ensure the security of the unauthorized tag’s information but also resist the reply attack, the internal reader attack, etc. Besides, using the partial ID and bit operation can reduce the system hardware requirements for the tag so that the proposed protocol is more suitable for low-cost RFID systems.
   

Key words: RBAC;RFID;access authority;safety level