This implements a toy version of Feldman secret sharing scheme based on
https://www.cs.umd.edu/~gasarch/TOPICS/secretsharing/feldmanVSS.pdf https://www.zkdocs.com/docs/zkdocs/protocol-primitives/verifiable-secret-sharing/ https://www.jcraige.com/vss-forgery
There is no broadcast channel here at the moment. This is a POC for understanding and practice and not for production use.