Research on mapping algorithm of distributed virtual storage space based on digital certificate authentication

With the continuous development of information technology, the amount of data in information systems continues to increase. Big data has become an inevitable trend in the development of information technology, and the problems faced by the secure storage of big data have also become problems that must be solved. On the one hand, the research in this paper meets the storage requirements of unstructured massive data. On the other hand, it applies digital certificate authentication technology to realize storage security identity authentication based on digital certificate, and solves the application problem of high-security identity authentication in distributed storage. The innovation of this paper is to use the corresponding virtual storage space mapping algorithm to realize the unified management of resource pool. And before data transmission, the digital certificate authentication method is used to realize the authority control of the storage resource pool. This paper has completed the design and implementation of the distributed secure storage system, and completed the related testing and verification work, which significantly improved the performance of data storage and solved the problem of big data secure storage.