Network security service guarantee method

The invention relates to a network security service guarantee method, which is used for providing equal mutual trust and communication data security guarantee for transmitting sensitive data and business cooperation on a public network among different organization systems. The network security service guarantee method is implemented by an MSP component, a configuration center and a user-defined transmission protocol. The method comprises the following steps: starting the configuration center and initializing configuration; integrating and starting an MSP component; initializing the MSP component; organizing system node authorization and role permission division; establishing communication connection between the nodes; sending an interactive cooperation request; carrying out identity authentication and data verification on a sender; performing data decryption and role operation authority verification; and executing the business logic of the organization system. The network security service guarantee method pro