Research And Application Of Data Protection Based On Cloud Storage

With the rapid development of cloud storage technology, increasing numbers of people and enterprises are using cloud storage to save or backup data. In the use of cloud storage services, more and more users are likely to pay attention to data security. Data security technology mainly adopts data encryption, data storage and other technical methods to achieve the high data performance: availability, reliability and security. However, when the users upload their private data onto the cloud, they also lose its absolute control over data to some extent. Therefore, whether users have the absolute control over data has become the hot topic in the field of cloud storage while using cloud storage service.Through the analysis of the domestic and foreign research status of cloud storage systems and data protection, this paper specifically points out the necessity and realistic significance of data security technologies in the environment of cloud storage. It mainly completes the work in three aspects. Firstly, it takes advantage data bits, using the way of shift and spread, to improve the data storage solution in cloud, and lists the rules of bit spilt and bit merge.Secondly, this paper creates a secure data storage strategy in cloud storage, including design of data structure and design of original file read and write interfaces and process, to achieve bit split algorithm and bit merge algorithm running under MFC interface.Thirdly, it gives a searchable public key encryption scheme based on multiple keywords. This paper introduces the specific process and various-stage implement of key generation algorithm, keyword encryption algorithm, retrieval information encryption trapdoor algorithm, and server search algorithm. This program can use a common channel to transfer keys for less linear pair operations and efficiency improvement of the algorithm. This paper proves the algorithm's consistency and makes an analysis of the algorithm's safety in the final.This paper applies the improved scheme into practice, using data bits shift and spread to improve cloud storage data storage solutions, and designing a data protection system based on cloud storage. It gives the system overall architecture and design ideas of each functional module and the main function of the system, and makes an analysis and evaluation of the system running results.