Jeremy Giudicelli developed BLAKE3 hashing support for the gchq/CyberChef repository, enabling users to compute hashes with an optional 32-byte key and hexadecimal output. He implemented this feature in JavaScript and WebAssembly, ensuring reliability through comprehensive unit testing. Jeremy also improved code formatting and refactored sections to enhance maintainability, while adding new Categories and an index to streamline feature discovery. His work broadened CyberChef’s cryptographic capabilities, allowing for more secure data processing workflows within the platform. The changes focused on maintainable, end-to-end feature delivery, addressing both technical depth and user experience without introducing new bugs.