Information Security of Information Systems with Elements of Centralization and Decentralization
The article is dedicated to the issues of protecting the resources of complex, territorially distributed information systems that incorporate the elements of centralization and decentralization. To protect the resources of distributed centralized and decentralized information systems, methods based on trust relationships, consensus, cryptographic security are widely used. Special attention is given to the mechanisms of logical distinction of subjects’ access to remote objects belonging to other components (segments) of distributed information security. Protection means used to implement the mechanism of managing the access to the resources of the distributed information systems are provided as well as the principles of user authentication. The specifics of the security problems arising in this case and the main approaches to their solutions are discussed taking into consideration a set of local segments (components) that differ by access subjects and objects, criticality of the data processed and access management models.