This is an implementation of Victor Shoup's ["Practical Threshold Signatures"] (http://www.shoup.net/papers/thsig.pdf). It was originally written as an undergraduate summer project for Oceanstore in 2000.
Warning: This code is not maintained, does not use modern coding practices, and has no security claims.
It is only posted as a reference.
A prototype implementation in Python from 2019 is here: https://github.com/oreparaz/shoup