Clara Graf-Simpson developed a security-critical feature for the SpaceTeam/STS1_COBC_SW repository by integrating the Blake2s cryptographic hash function using the Arduino Cryptography Library. Working in C++ and focusing on embedded systems, she enabled fast and secure hashing to support data integrity and authentication within security-sensitive workflows. Her approach maintained baseline system stability, introducing the new hashing capability without causing regressions or disrupting existing functionality. This work addressed the need for robust integrity checks in embedded environments and positioned the project for future security enhancements. Clara’s contribution demonstrated depth in cryptography and embedded software engineering, with careful attention to integration quality.