ironfish-zkp
This is the foundation of the Iron Fish project that knows about the Sapling API and its zero-knowledge proving mechanism.
Iron Fish uses the BLS12 curve.
Much of the code here was originally forked from https://github.com/zcash/librustzcash
Anything that hasn't been forked is re-exported so that this is the main entry point for any related code. No other crates should have a librustzcash dependency.