Pub (#14)

limit public APIs

profiler/nizk.rs

@@ -0,0 +1,51 @@
+#![allow(non_snake_case)]
+extern crate flate2;
+extern crate libspartan;
+extern crate merlin;
+extern crate rand;
+
+use flate2::{write::ZlibEncoder, Compression};
+use libspartan::r1csinstance::R1CSInstance;
+use libspartan::spartan::{NIZKGens, NIZK};
+use libspartan::timer::Timer;
+use merlin::Transcript;
+
+pub fn main() {
+  // the list of number of variables (and constraints) in an R1CS instance
+  let inst_sizes = vec![12, 16, 20];
+
+  println!("Profiler:: NIZK");
+  for &s in inst_sizes.iter() {
+    let num_vars = (2 as usize).pow(s as u32);
+    let num_cons = num_vars;
+    let num_inputs = 10;
+    let (inst, vars, input) = R1CSInstance::produce_synthetic_r1cs(num_cons, num_vars, num_inputs);
+
+    Timer::print(&format!("number_of_constraints {}", num_cons));
+
+    // produce public generators
+    let gens = NIZKGens::new(num_cons, num_vars);
+
+    // produce a proof of satisfiability
+    let timer_prove = Timer::new("NIZK::prove");
+    let mut prover_transcript = Transcript::new(b"example");
+    let proof = NIZK::prove(&inst, vars, &input, &gens, &mut prover_transcript);
+    timer_prove.stop();
+
+    let mut encoder = ZlibEncoder::new(Vec::new(), Compression::default());
+    bincode::serialize_into(&mut encoder, &proof).unwrap();
+    let proof_encoded = encoder.finish().unwrap();
+    let msg_proof_len = format!("NIZK::proof_compressed_len {:?}", proof_encoded.len());
+    Timer::print(&msg_proof_len);
+
+    // verify the proof of satisfiability
+    let timer_verify = Timer::new("NIZK::verify");
+    let mut verifier_transcript = Transcript::new(b"example");
+    assert!(proof
+      .verify(&inst, &input, &mut verifier_transcript, &gens)
+      .is_ok());
+    timer_verify.stop();
+
+    println!();
+  }
+}

profiler/snark.rs

@@ -0,0 +1,56 @@
+#![allow(non_snake_case)]
+extern crate flate2;
+extern crate libspartan;
+extern crate merlin;
+extern crate rand;
+
+use flate2::{write::ZlibEncoder, Compression};
+use libspartan::r1csinstance::R1CSInstance;
+use libspartan::spartan::{SNARKGens, SNARK};
+use libspartan::timer::Timer;
+use merlin::Transcript;
+
+pub fn main() {
+  // the list of number of variables (and constraints) in an R1CS instance
+  let inst_sizes = vec![12, 16, 20];
+
+  println!("Profiler:: SNARK");
+  for &s in inst_sizes.iter() {
+    let num_vars = (2 as usize).pow(s as u32);
+    let num_cons = num_vars;
+    let num_inputs = 10;
+    let (inst, vars, input) = R1CSInstance::produce_synthetic_r1cs(num_cons, num_vars, num_inputs);
+
+    Timer::print(&format!("number_of_constraints {}", num_cons));
+
+    // produce public generators
+    let gens = SNARKGens::new(&inst.size());
+
+    // create a commitment to R1CSInstance
+    let timer_encode = Timer::new("SNARK::encode");
+    let (comm, decomm) = SNARK::encode(&inst, &gens);
+    timer_encode.stop();
+
+    // produce a proof of satisfiability
+    let timer_prove = Timer::new("SNARK::prove");
+    let mut prover_transcript = Transcript::new(b"example");
+    let proof = SNARK::prove(&inst, &decomm, vars, &input, &gens, &mut prover_transcript);
+    timer_prove.stop();
+
+    let mut encoder = ZlibEncoder::new(Vec::new(), Compression::default());
+    bincode::serialize_into(&mut encoder, &proof).unwrap();
+    let proof_encoded = encoder.finish().unwrap();
+    let msg_proof_len = format!("SNARK::proof_compressed_len {:?}", proof_encoded.len());
+    Timer::print(&msg_proof_len);
+
+    // verify the proof of satisfiability
+    let timer_verify = Timer::new("SNARK::verify");
+    let mut verifier_transcript = Transcript::new(b"example");
+    assert!(proof
+      .verify(&comm, &input, &mut verifier_transcript, &gens)
+      .is_ok());
+    timer_verify.stop();
+
+    println!();
+  }
+}