Digital restrictions management, better known as DRM, is about restrictions, not about rights. DRM is all about imposing restrictions and limitations on computer users and their systems. Microsoft Word turns your password to open into an encryption key that scrambles contents of your document. Each document has its own encryption key to the user’s copy of Word and Excel. Microsoft argues that RMS is different from its enterprise framework describing web pages describing Duck Quacks It’s a real breed of DRM that’s designed for Microsoft documents.”]
Source: https://www.csoonline.com/article/2119569/digital-rights-and-restrictions.html