The Fortanix-Data-Security-Manager (DSM) Filesystem Encryption solution, based on the open-source cppcryptfs, uses a daemon agent to manage mounting, encryption, decryption, and policy enforcement. This setup integrates seamlessly with existing applications, requiring no changes.
When using Dokany - a software interface similar to Filesystem in Userspace (FUSE) but designed for Windows, the filesystem controls all input and output operations. The Windows kernel routes these operations to the Fortanix DSM agent using the Dokany driver, which processes them according to the defined policies and communicates responses back to the application.
To discover the architecture and key hierarchy of Filesystem Encryption on Windows, refer to Filesystem Encryption for Windows as a Service - Concepts guide.