How does Windows Media DRM protect content owners rights during the transfer of digital media files?
Standard cryptographic protocols based on digital signatures are used for authentication throughout Windows Media DRM. For example, license servers use Windows Media DRM technologies to authenticate Windows Media DRM–based clients. These clients use digital certificates on their computers. The digital certificate’s unique public key and version number identify the client. Licenses are issued only to authenticated clients. The digital media file key in the license is also encrypted in such a way that only the Windows Media DRM–based client software to which the key was issued can retrieve it. A digital signature further protects the usage rules from tampering.
Standard cryptographic protocols based on digital signatures are used for authentication throughout Windows Media DRM. For example, license servers use Windows Media DRM technologies to authenticate Windows Media DRM-based clients. These clients use digital certificates on their computers. The digital certificate’s unique public key and version number identify the client. Licenses are issued only to authenticated clients. The digital media file key in the license is also encrypted in such a way that only the Windows Media DRM-based client software to which the key was issued can retrieve it. A digital signature further protects the usage rules from tampering.
Related Questions
- How do I protect digital media files with Windows Media DRM so they can be played by older Windows Media Players, such as Windows Media Player 6.4? What are the drawbacks, if any?
- How does Windows Media DRM protect content owners rights during the transfer of digital media files?
- How does Windows Media DRM protect digital content?
