Abstract
Currently, Radio Frequency Identification (RFID) is one of the key technologies to realize the Internet of Things (IoT), which is widely used in our daily life. However, there are some security threats such as impersonation attack, replay attack in existed RFID systems. In addition, most physical-layer authentication methods for RFID systems are mainly to authenticate tags without authenticating the user. In this paper, we present the design and implementation of Au-Hota, a system that can authenticate the tag and the user simultaneously, and can resist replaying attack and impersonation attack that cannot be solved by most physical-layer methods. Our idea is to assign a unique identifier to the user based on the inductive coupling between two adjacent tags. When the user draws the identity identifier on the tag, different identity identifiers correspond to unique phase features so that simultaneous authentication of the tag and the user can be achieved under the premise of ensuring security. The system is fully compatible with Ultra High Frequency (UHF) RFID systems without any modification. We implement a prototype of the system and conduct extensive experiments to evaluate performance. Our results demonstrate that the system has good authentication performance.
Highlights
R ADIO Frequency Identification (RFID) is an essential part of the Internet of Things (IoT)
Au-Hota can be applied in many scenarios in daily life, especially in scenarios where RFID tags and user identity authentication are required simultaneously
If the attacker obtains the legal TR and acquires the identity identifier of the legal user, USRP N210 is designed as a Ultra High Frequency (UHF) RFID reader
Summary
R ADIO Frequency Identification (RFID) is an essential part of the Internet of Things (IoT). Compared with running the encryption algorithm in the tag, the tag authentication method based on the physical layer does not have any requirements on the tag’s performance. Aiming at the security problems that the above existing methods have not solved, we design Au-Hota that can authenticate the tag and the user holding the tag. It can resist common attacks and resist replaying attack and impersonation attack simultaneously. The contributions of this paper are as follows: (1) We design a new physical-layer RFID authentication system(Au-Hota) that can authenticate tags and users simultaneously, and the authentication strengths the RFID systems’ security.
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