Compiling circuits:
circom multiplier2.circom --r1cs --wasm --sym --c
Computing the witness:
node ./multiplier2_js/generate_witness.js ./multiplier2_js/multiplier2.wasm input.json witness.wtns
Proving circuits with ZK:
Trusted setup
- Powers of tau
- start a new "powers of tau" ceremony:
snarkjs powersoftau new bn128 12 pot12_0000.ptau -v- contribute to the ceremony:
snarkjs powersoftau contribute pot12_0000.ptau pot12_0001.ptau --name="First contribution" -v
- Phase 2
- start the generation of phase 2:
snarkjs powersoftau prepare phase2 pot12_0001.ptau pot12_final.ptau -v- start a new zkey:
snarkjs groth16 setup multiplier2.r1cs pot12_final.ptau multiplier2_0000.zkey- Contribute to the phase 2 of the ceremony:
snarkjs zkey contribute multiplier2_0000.zkey multiplier2_0001.zkey --name="1st Contributor Name" -v- Export the verification key:
snarkjs zkey export verificationkey multiplier2_0001.zkey verification_key.json
Generating a Proof
generate a zk-proof:
snarkjs groth16 prove multiplier2_0001.zkey witness.wtns proof.json public.json
Verifying a Proof
verify the proof:
snarkjs groth16 verify verification_key.json public.json proof.json