Secure Key Distribution via Identity Management Server Encryption

The patent applies preliminary action by establishing a security mechanism before the actual transmission of sensitive data. The identity management server and terminal negotiate and establish encryption keys and authentication mechanisms in advance, before the private key and ID are transmitted. This ensures that when the actual data transmission occurs, robust security protections are already in place, preventing information leakage while maintaining a manageable level of complexity.

The patent uses an intermediary approach by introducing an identity management server as a mediator between the terminal and the network. This server handles the complex tasks of key negotiation, encryption setup, and authentication verification. By centralizing these security functions in a dedicated intermediary entity, the patent achieves strong communication security performance while managing system complexity through specialized role assignment rather than distributing complex security logic across all components.

The patent applies self-service by enabling the terminal and identity management server to autonomously negotiate and establish encryption keys without requiring manual configuration or intervention. The terminal actively participates in the key negotiation process, generating and managing its own cryptographic materials. This automated self-service approach ensures information security through robust encryption while keeping the authentication process relatively simple and efficient, as the system performs the complex security operations automatically without increasing operational burden on users.