关键词:
RFID
IoMT
Batch authentication
Homogeneous linear equations
摘要:
As an application of IoT technology in the healthcare industry, IoMT has higher security requirements than IoT while improving medical efficiency and reducing medical costs. How to ensure the safety of IoMT is a challenging task. In the implementation of IoMT, Radio-Frequency Identification (RFID) is a key technology for establishing an identity authentication system, which can efficiently identify medical equipment and patients. Designing a safe and efficient RFID authentication protocol will help protect user privacy, enhance the security of the IoMT system and improve the efficiency of medical staff to detect and manage patients. Most of the existing RFID authentication protocols can only authenticate one tag in each authentication session, which is called a per-tag protocol. In medical scenarios that need to efficiently authenticate a mass of tags at short notice, the use of traditional per-tag protocols is inefficient and may delay the treatment of patients. To solve the problem that the per-tag protocols are not applicable in some medical scenarios, we designed a low-cost batch authentication protocol which can accurately identify each illegal tag and reduce the overhead of authentication data transmission. We use the solution of homogeneous linear equations as a key to encrypt the authentication data of the tag to further reduce the cost of the tag. The protocol proposed in this paper is capable of batch certification of tags, with strong security and low tag cost. After security analysis and performance analysis, our scheme can be well applied to IoMT.