1#![allow(non_snake_case)]
 2#![allow(clippy::assertions_on_result_states)]
 3
 4extern crate flate2;
 5extern crate libspartan;
 6extern crate merlin;
 7extern crate rand;
 8
 9use ark_serialize::*;
10use libspartan::parameters::poseidon_params;
11use libspartan::poseidon_transcript::PoseidonTranscript;
12use libspartan::{Instance, NIZKGens, NIZK};
13
14fn print(msg: &str) {
15  let star = "* ";
16  println!("{:indent$}{}{}", "", star, msg, indent = 2);
17}
18
19pub fn main() {
20  // the list of number of variables (and constraints) in an R1CS instance
21  let inst_sizes = vec![10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20];
22
23  println!("Profiler:: NIZK");
24  for &s in inst_sizes.iter() {
25    let num_vars = (2_usize).pow(s as u32);
26    let num_cons = num_vars;
27    let num_inputs = 10;
28
29    // produce a synthetic R1CSInstance
30    let (inst, vars, inputs) = Instance::produce_synthetic_r1cs(num_cons, num_vars, num_inputs);
31
32    // produce public generators
33    let gens = NIZKGens::new(num_cons, num_vars, num_inputs);
34
35    let params = poseidon_params();
36    // produce a proof of satisfiability
37    let mut prover_transcript = PoseidonTranscript::new(&params);
38    let proof = NIZK::prove(&inst, vars, &inputs, &gens, &mut prover_transcript);
39
40    let mut proof_encoded = Vec::new();
41    proof.serialize(&mut proof_encoded).unwrap();
42    let msg_proof_len = format!("NIZK::proof_compressed_len {:?}", proof_encoded.len());
43    print(&msg_proof_len);
44
45    // verify the proof of satisfiability
46    let mut verifier_transcript = PoseidonTranscript::new(&params);
47    assert!(proof
48      .verify(&inst, &inputs, &mut verifier_transcript, &gens)
49      .is_ok());
50
51    println!();
52  }
53}