Developed custom TLS provider support for the smithy-lang/smithy-rs repository by introducing a rustls-custom-provider feature flag and a new CryptoMode variant, enabling users to specify and integrate custom cryptographic providers through Rustls’ plugin framework. This work focused on enterprise cryptography requirements, allowing for future integrations such as OpenSSL. The implementation included comprehensive tests to validate connectivity across multiple feature configurations and ensured backward compatibility through careful handling of trait implementations. All changes were documented in the changelog, with builds and tests validated under various configurations. The project leveraged expertise in Rust, cryptography, and TLS to enhance flexibility and maintainability.