Worked on the openssl/openssl repository, focusing on enhancing the reliability of cryptographic operations through targeted bug fixing. Addressed a critical issue in the ml_dsa module by correcting the error handling logic within the public_from_private function, ensuring that it now returns a failure code when appropriate rather than silently succeeding. This adjustment aligns the function’s behavior with established API expectations and improves error signaling for downstream consumers. The work required expertise in C and low-level programming, with a strong emphasis on cryptography. By refining error propagation, the contribution reduced risk in cryptographic workflows and strengthened the overall stability of OpenSSL.