Buffer Process for Secure Inter-Container Messaging

The patent introduces a buffer process as an intermediary component that sits between containers and the kernel messaging system. This buffer process acts as a security gateway that filters and controls inter-container messaging, allowing security policies to be enforced without blocking all communication. The buffer process enables efficient communication by allowing authorized messages to pass through while maintaining security restrictions, thus resolving the contradiction between security and communication efficiency.

The patent implements preliminary authorization by pre-configuring security policies and authorization rules in the buffer process before inter-container messaging occurs. The buffer process maintains authorization data structures that define which containers and processes are permitted to communicate. This preliminary setup allows the system to efficiently check authorization using pre-computed rules rather than performing complex security evaluations for each message, thus maintaining both security control capability and communication efficiency.

The buffer process serves as a mandatory intermediary for all inter-container messaging, preventing direct communication between containers. This intermediary architecture maintains communication flexibility by allowing messages to be routed between any containers that have proper authorization, while simultaneously reducing the attack surface by centralizing security control points. All messaging must pass through the buffer process where security policies are enforced, eliminating direct exposure between containers.

The patent implements dynamic authorization by allowing authorization data in the buffer process to be updated at runtime. The buffer process can modify its authorization data structures based on changing security requirements, container lifecycles, and communication patterns. This dynamic capability maintains security by ensuring that authorization rules are always current while adapting to evolving environmental conditions, thus resolving the contradiction between static security configuration and dynamic adaptability.