Research On Data Integrity Protection Method Based On Erasure Code In Internet Of Things

In recent years,Internet of Things technology as the latest generation of IT technology is in the rapid development.As the name implies,the Internet of things is the network which connects things,through technical means to achieve the collaborative communication between objects and objects,between people and people,between people and object,applying technical means such as Internet,wireless sensor networks and mobile communication networks to form the entire complex system,its technology is widely used in intelligent home,environmental testing and protection,intelligent transportation,large information collection,military and other fields,after several years of development,Internet of Things technology matures reliably,it has become an essential technology of the normal operation of social work.Internet technology is in the stage of rapid development,but many of the technology is not perfect,existing a greater loophole compared to traditional computer technology,hence,together with the development of Internet of things,the protection of Internet security is also an unavoidable problem for each researcher.As the wireless sensor network is widely applied to the sensing layer of the Internet of Things nodes,but the wireless sensor network is in the transmission of data with great volatility,so its transmission effect will be interfered by actual environment,resulting in network instability and data packet loss,therefore,in the Internet of things nodes in the wireless sensor network,the biggest challenge is the integrity of data protection.The problem which must be faced in the study of Internet of Things security is to find a protection strategy which is suited to the characteristics of Internet of Things node,such as limited processing capacity,limited memory space,low energy consumption tolerance and complex system changes.In view of the challenge of the security of the Internet of things,this paper analyzes the current situation of the research on the security of the Internet of Things and the corresponding data integrity protection strategy.From the many data fault-tolerant methods,Erasure code technology is chosen as the solution to the Internet of Things Data integrity protection strategy,Erasure code technology has been widely used in many areas,the technology is more mature and reliable,Error-correcting code technology belongs to the forward Erasure code,it can code the entire data by fragment,and through the decoding operation,in a certain degree of tolerance,it can to restore the lost data,providing a strong guarantee to the data integrity and reliability,it can provide integrity detection and error correction function.In this paper,the most typical Reed-Solomon code in the Erasure code is used as the data integrity protection algorithm in Internet of Things node,and it is realized through C-program to select the latest microcomputer Raspberry Pi,named “Raspberry Pi” in Chinese.It is a microcomputer main board carrying mini-processor based on ARM,it can be used to simulate a video surveillance device in the Internet of things.When the network environment is poor,it is prone to packet loss,Erasure code can be used as a protection strategy,before raspberry node sends data to the host,it will process Erasure encoding operation,after sending to the host,it will process decoding operation,which means it can restore the lost data block through the redundant block,thus restoring the original photo data.Experiments are rigorously tested,in the experiment of stimulation of poor network environment,Erasure code technology can repair the lost data by encoding and decoding operation,and the performance of the experiment is in accordance with the characteristics of Internet of Things.Therefore,the method proposed in this paper puts forward a new angle for data integrity protection in the Internet of Things environment,it has strong feasibility and timeliness,and can be applied to the practical work of society.