Fiat--Shamir with Proof-of-work for verifier messages

This crate is an extension of the Sponge FiSh library that provides support for challenges computed via grinding or proof-of-work mechanisms. It allows proof-of-work-based challenge generation within multi-round public coin protocols.

Security Disclaimer and Expectations

⚠️⚠️⚠️⚠️ THIS CRATE IS AN EXPERIMENT AND NOT READY FOR PRODUCTION USE ⚠️⚠️⚠️⚠️

It has not been reviewed, and should be considered a proof-of-concept example that does not make any claim about security.