Cloud Data Storage Based On Network Coding In Security Technology Research

At the time of greeting the arrival of big data,the big data is launching a challenge to people.How to store and manage these huge amounts of data has became an important problem that faces at present.The emergence and development of cloud storage to solve this problem provides a good solution.However,for resource of overhead cloud storage data recovery process,there is still not a good solution.Especially cloud storage security event happened in recent years,it makes people do more extensive research on cloud storage technology.Cloud storage security has become one of the hot issue of research.In the traditional repair methods and data integrity protection scheme,main method is using redundant storage technologies to repair damage data.The data integrity verification scheme based on one-way hash function.These schemes have brought enormous computing resources and communication resources,has not apply to cloud storage technology at present.and at the same time it is facing problems of the process of data integrity checking,such as the data leakage.Therefore,as for the cloud data recovery,the paper puts forward the data storage scheme based on network coding,the scheme can reduce the computational costs and communication overhead in the process of data recovery,which is in the same data redundant storage cases.By constructing a specific coding matrix,the data can be recoveried in the linear time,and it does not need to transfer the corresponding storage matrix in the process of data storage,which improved the safety of network coding.As for the cloud data integrity test problems,the paper puts forward that the calibration scheme based on a third party,which reduces the risk of damage to data to be stored that server hided.Therefore,using the tag data block corresponds to the storage of data blocks,to prevent the hidden data blocks and the threat of the third party to collaboration with the storage system,which improves the security in the process of data validation.Methods,which used in the process of checking,can reduce the computational overhead,the bottom of the communication overhead.Above all,the paper puts forward the data recovery technology,which is based on network coding algorithm,and the third-party monitoring is used in the process of integrity checking method,which is supplemented by zero space to ensure the safety of the cloud data storage.The paper use MATLAB simulation to prove that,compared with the existing cloud data recovery method and calibration methods,computing resources and communication resources cost have obviously declined.