Biblio

As RFID system has fewer calculation and storage resources for RF tag, it is difficult to adopt the traditional encryption algorithm technology with higher security, which leads to the system being vulnerable to counterfeiting, tampering, leakage and other problems. To this end, a lightweight bidirectional security authentication method based on the combined public key is proposed. The method deals with the key management problem of the power Internet of things (IoT) in the terminal layer device by studying the combined public key (CPK) technology. The elliptic curve cryptosystem in the CPK has the advantages of short key length, fast calculation speed and small occupied bandwidth, which is very suitable for the hardware environment of RFID system with limited performance. It also ensures the security of the keys used in the access of the IoT terminal equipment to the authentication, and achieves overall optimization of speed, energy consumption, processing capacity and security.