I didn't know about rhash! Cool! This might be easier to install and use though. All of the first hashes come from Python's "hashlib.algorithms_available", so

I didn't know about rhash! Cool! This might be easier to install and use though. All of the first hashes come from Python's "hashlib.algorithms_available", so that's a really good question. Your guess seems like a good one. I haven't found any 'SHA-512/224' and 'SHA-512/256', or any Skein function implementations in Python! PR's welcome!