Efficient Authentication System Based On Blockchain Using eID card

With the continuous advancement of smart cities, Internet of Things(IoT) technology is flourishing at an unprecedented rate. This has led to a rapid increase in the number of IoT devices and a consequent rise in data interactions between these devices. As a result, the management and verification of device identities have become increasingly crucial. However, current systems still rely on vast databases to store identity data and require manual intervention for authentication. This reliance on databases limits the efficiency of authentication, particularly in environments with a large number of devices. To address this challenge, we have integrated government public key infrastructure(PKI) with smart contract technology to develop an efficient and automated authentication system. Our system utilizes electronic identity cards(eID cards) as a storage medium for certificates, providing reliable identity proof. Smart contracts are then used to automatically verify the certificates and implement access control over the verification results. Our system offers not only stronger universality, reduced storage overhead, and faster authentication speed, but also higher scalability. This innovative approach paves the way for authentication in IoT devices.