During October 2024, Protz contributed to the python/cpython repository by developing a vectorized implementation of the Blake2 hashing algorithm for x86 architectures. This work involved updating the HACL library and integrating optimized C code to leverage x86 vectorization, resulting in faster cryptographic hashing and improved scalability for systems relying on Python’s cryptography stack. Protz focused on performance optimization and cryptography, benchmarking the new implementation to ensure reduced CPU cycles and lower latency for workloads such as TLS and integrity checks. The depth of this contribution reflects strong expertise in C programming, cryptographic engineering, and cross-repository collaboration within large codebases.