Secure Inter-Process Communication via Export File Type Definitions

The patent introduces an intermediary mechanism (the operating system's inter-process communication framework) that mediates between isolated applications. This mediator enables controlled data exchange through defined interfaces and permissions, allowing applications to share data securely without direct access to each other's memory spaces. The intermediary handles data serialization, permission verification, and secure transmission protocols.

The patent implements preliminary action by pre-defining data sharing interfaces, permission models, and communication protocols before applications need to exchange data. The operating system establishes these frameworks in advance, so when applications need to share data, they simply need to invoke pre-approved interfaces rather than negotiating security protocols in real-time. This reduces overhead and improves sharing efficiency while maintaining protection.

The patent applies local quality by implementing fine-grained access control where different applications receive different levels of data access rights based on their specific needs and trust levels. Rather than uniform access to all data, the system provides targeted access to specific data objects or data categories to specific applications. This is achieved through capability-based security models and selective data exposure mechanisms that grant access only where explicitly permitted.