Worked on the google/android-cuttlefish repository to enhance key security validation within the KeyMint tag handling process. Addressed a critical bug by implementing validation logic in C++ for the TPM Key Blob Maker, specifically targeting the KM_TAG_MODULE_HASH in SplitEnforcedProperties. This approach introduced debug logging to improve traceability and enforced safeguards that return an invalid tag error when improper module-hash KeyMint tags are encountered. By focusing on embedded systems and key management, the work ensured that only valid tags are processed, thereby maintaining system integrity and reducing the risk of tag-related failures in security-sensitive KeyMint workflows.