During April 2025, Matziaz enhanced the TE2002B repository by developing core AES cryptographic features using VHDL and digital design principles. He implemented the AddRoundKey operation for both encryption and decryption, integrating it into the Encryptor and Decryptor modules with refined control and finish signaling. Matziaz also delivered the InvMixColumns transformation for AES decryption, handling Galois Field multiplications and per-byte state changes to align with cryptographic standards. His work included thoughtful codebase refactoring for naming consistency, improving maintainability and supporting future enhancements. The depth of these contributions strengthened the module’s security, reliability, and long-term code quality.