Distributed Storage Method for Data Security Sharing and Exchange

the traditional distributed storage method realizes the decentralized storage of data to a certain extent, but there are still some problems, such as excessive waste of storage space, low security, low storage efficiency and so on. In order to solve these problems, this paper designs a high security storage scheme with adaptive selection of storage nodes, anti-loss and theft, and anti-repudiation, among which, on the one hand, it realizes the efficient storage of data and reduces the space occupation rate. On the other hand, it maintains the security, integrity and availability of the data throughout the life cycle of storage.