Space delay-tolerant network secure communication model.

This paper proposed a secure communication model for space delay-tolerant network. This model applied predicate logic, and built SDTN directed multi-path graph, security protocol service set, reliable path selection service set, and forwarding capacity set. It also gave out the model's security constraint rule and secure communication algorithm. It defined the state machine of space delay-tolerant network secure communication, and proved the model's security, reliability and delay-tolerant ability, which laid the foundation for space delay-tolerant network secure communication. [ABSTRACT FROM AUTHOR]