Secure Storage And Authentication Mechanism For Smart Sensor Images In Internet Of Things

With the rapid development of the Internet of Things(IoT),the number of IoT devices and sensor data have increased exponentially.In this state,how to more effectively protect the security of these sensory data has become the focus of great concern.In the IoT,due to the intelligent and open nature of smart sensors.security problems such as data theft,forgery,and deception are prone to occur in the process of transmission,storage,and authentication of sensing data.Once the storage server is attacked by malicious.the security of IoT data will be greatly threatened,especially in centralized storage servers.In this state,people's security requirements for the management,transmission,and storage of massive sensor data in the IoT are more urgent.In order to solve the above-mentioned problems and meet the security management needs of more and more IoT users for intelligent services and control,a corresponding security mechanism is proposed for the entire process of storage of sensor data information and user authentication.The main content is described as follows:(1)This thesis proposes a safe storage mechanism for user's intelligent sensor images.This mechanism is based on the principle of distributed storage,divides the user's image information sensed intelligently into blocks,and signs and transmits each user's image data block to multiple cloud servers.The signature private keys of different user image data blocks are different,and the private key will be updated in the next cycle,which greatly increases the difficulty of the private key being stolen or cracked.For the user image data blocks with different signatures,the cloud server will safely store the user image information after the signature verification is passed,to ensure the safety and reliability of the user image information storage,and protect the security of the user's private information.(2)This thesis proposes a collaborative identity authentication mechanism based on user images.This mechanism is combined with another secure storage mechanism for user-sensing images proposed in this paper.Based on the legal user image information stored in the cloud server,the back-end image management machine encrypts the legitimate user image information by the elliptic curve encryption algorithm and sequentially transmits it to the local-domain management machine and central cloud server,and then establishs the internal legal user image database.Subsequently,the mechanism uses the front-end image sensor to securely encrypt and transmit the images of unidentified users that need to be authenticated to the back-end image management machine,local-domain management machine,and central cloud server.Finally,the user images in the image database are compared to complete the three-terminal collaborative identity authentication of the user images,which greatly improves the security of the user image data transmission and identity authentication processes.