Code Obfuscation via Selective IL Encryption

The patent applies preliminary action by encrypting the IL code before it is stored or transmitted. The encryption process converts the intermediate language code into an encrypted form that cannot be easily decompiled or manipulated. The decryption occurs automatically at runtime, allowing the code to execute properly while maintaining security throughout storage and transmission phases.

The patent introduces an intermediary decryption mechanism that acts as a mediator between the encrypted IL code and the execution environment. The decryption process, triggered at runtime, serves as an intermediary step that transforms the encrypted code back into executable form only when needed, preventing direct access to the original IL code structure while maintaining execution flexibility.

The patent applies segmentation by dividing the IL code into multiple segments or blocks that are encrypted separately. Instead of encrypting the entire codebase as a single unit, the code is partitioned into manageable segments that can be decrypted and executed efficiently. This segmented approach reduces the overall decryption overhead and allows for selective decryption of only the necessary code segments at runtime.

The patent implements partial action by encrypting only the critical or sensitive portions of the IL code rather than the entire codebase. The encryption is applied selectively to specific methods, classes, or code blocks that require protection, while less critical code remains in its original form. This partial encryption approach maintains code security for important functions while minimizing the performance impact on overall execution speed.