FileOpen by FileOpen Systems is a digital rights management (DRM) solution designed to protect and control access to digital documents. It provides document-level encryption and authentication for various file formats, including PDF and Microsoft Office documents. FileOpen implements industry-standard encryption methods such as AES-256 for PDF (ISO 32000) and uses the Security Handler mechanism from the PDF Specification. The system includes tools for document encryption, client-side decryption software that integrates with common viewer applications, and server software utilizing a published control protocol.
