CIP20 - Extensible Hash Function Precompile

Discussion thread for CIP20.

The goal is to provide access to some common cryptographic hash functions. We do that by adding them all to a single precompile. Any specific questions? :slight_smile:

My current TODO is to add SHA2-512 and work on the benchmarking utility. If anyone has strong opinions on what that should look like, Iā€™d love to hear

first draft fuzzer over here:

Migrating this thread to the github repo