Cryptography Boot Loader Version Validation for DRM Security

The patent applies preliminary action by performing version validation of the operating system and application programs before allowing access to protected content. The system checks whether the OS and application versions meet the minimum version requirements specified in the rights object before enabling any DRM operations. This preventive measure ensures that only authorized, non-compromised versions of software can access protected content, thereby preventing malicious bypass attempts before they can occur.

The patent introduces an intermediary validation mechanism that acts as a mediator between the DRM agent and the protected content. The system inserts a version validation step that verifies the OS and application versions against the rights object requirements before allowing the DRM agent to proceed with content protection operations. This intermediary check prevents malicious programs from bypassing DRM by ensuring that only authorized software versions can access the protected content.

The patent applies universality by implementing a version validation mechanism that serves multiple functions: it validates both operating system versions and application program versions, enforces minimum version requirements from rights objects, and controls key access. This multi-functional approach consolidates what could be separate complex systems into a unified validation framework, reducing overall system complexity while maintaining strong security.

The patent implements self-service by having the system automatically perform version validation and key access control without requiring manual intervention. The validation mechanism operates autonomously by checking version information stored in the system against the requirements in the rights object, and automatically granting or denying access based on the validation results. This automation reduces operational complexity while maintaining secure key management.