WIP: Arrabiata/Fiat-Shamir is fun

arrabiata/src/main.rs

@@ -97,6 +97,9 @@ pub fn main() {
 
  // FIXME:
  // Absorb all commitments in the sponge.
+ env.absorb_commitments();
+ // Q: what is the initial state of the sponge?
+ // Q: where do we get it. We should keep it in the env.
 
  // FIXME:
  // Coin chalenges β and γ for the permutation argument

arrabiata/src/witness.rs

@@ -1052,4 +1052,16 @@ impl<
  Instruction::NoOp => Instruction::NoOp,
  }
  }
+
+ // TODO:
+ // - decide how we will structure the constraints -> selectors, etc.
+ // - for each row, only use the activated constraint
+ // - keep the cross-terms in the environment.
+ // - use alpha and alpha' from the env. It should have been coined before.
+ pub fn compute_cross_terms(&self) -> HashMap<usize, Fp> {}
+
+ pub fn absorb_commitments(&mut self) {
+ let old_state = BigInt::from(0);
+ if env.current_iteration % 2 == 0 {}
+ }
 }