"poor support on Windows and in scripting languages" Try the libsodium / NaCl / pynacl family of crypto libraries, which handle UDP, work on Windows, OS X and *

"poor support on Windows and in scripting languages" Try the libsodium / NaCl / pynacl family of crypto libraries, which handle UDP, work on Windows, OS X and *nix, and plug into any scripted language that can talk to a C api.