Data access method for distributed data storage, and information data processing terminal

The invention belongs to the technical field of computer software and discloses a data access method for distributed data storage, and an information data processing terminal. User data are divided into blocks, and then the blocks are stored in different storage nodes, satisfying the requirement that the storage distance of any two data blocks is greater than a given value. The nodes are arrangedin ascending order of unit data access time, and the data storage nodes are selected in turn under the constraint of safe distance to form the optimal K-distance topological subgraph, and data are placed on the in K-distance topology subgraph. Because the data are stored in different geographical locations in different storage nodes, attackers cannot know the location of the data, which ensures the security of user data. Through the Omnet + + simulation platform and Matlab simulation platform, the K-DDS algorithm and other algorithms are compared in different network size topology, and the effectiveness of the algorit