Developed and integrated TLS ClientHello GREASE support into the openssl/openssl repository, addressing protocol ossification and enhancing interoperability in network security environments. The work involved implementing RFC 8701 by injecting reserved GREASE values into multiple ClientHello fields, including cipher suites and supported groups, using C programming and cryptography expertise. A new command-line option was added to s_client, enabling GREASE injection for testing and deployment flexibility. The approach maintained GREASE state across HelloRetryRequest retransmissions through lazy-seeded randomness, ensuring consistency. Comprehensive documentation and expanded test coverage were provided to validate interoperability, contributing to the robustness and forward compatibility of the codebase.