tornado-packages/phase2-bn254
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refactor stuff into lambdas and iterators

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poma 2020-01-25 15:29:25 +08:00
parent dbff653bb8
commit 605bfa9381
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GPG Key ID: BA20CB01FE165657
5 changed files with 49 additions and 105 deletions
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94
phase2/src/bin/export_keys.rs
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@ -6,9 +6,12 @@ extern crate serde;
extern crate serde_json;
extern crate num_bigint;
extern crate num_traits;
extern crate itertools;
use std::fs;
use std::fs::OpenOptions;
use std::iter::repeat;
use itertools::Itertools;
use serde::{Deserialize, Serialize};
use phase2::parameters::MPCParameters;
use phase2::utils::{
@ -74,84 +77,31 @@ fn main() {
let params = MPCParameters::read(reader, disallow_points_at_infinity, true).expect("unable to read params");
let params = params.get_params();
let mut proving_key = ProvingKeyJson {
a: vec![],
b1: vec![],
b2: vec![],
c: vec![],
vk_alfa_1: vec![],
vk_beta_1: vec![],
vk_delta_1: vec![],
vk_beta_2: vec![],
vk_delta_2: vec![],
h: vec![],
let proving_key = ProvingKeyJson {
a: params.a.iter().map(|e| p1_to_vec(e)).collect_vec(),
b1: params.b_g1.iter().map(|e| p1_to_vec(e)).collect_vec(),
b2: params.b_g2.iter().map(|e| p2_to_vec(e)).collect_vec(),
c: repeat(None).take(params.vk.ic.len()).chain(params.l.iter().map(|e| Some(p1_to_vec(e)))).collect_vec(),
vk_alfa_1: p1_to_vec(&params.vk.alpha_g1),
vk_beta_1: p1_to_vec(&params.vk.beta_g1),
vk_delta_1: p1_to_vec(&params.vk.delta_g1),
vk_beta_2: p2_to_vec(&params.vk.beta_g2),
vk_delta_2: p2_to_vec(&params.vk.delta_g2),
h: params.h.iter().map(|e| p1_to_vec(e)).collect_vec(),
};
let a = params.a.clone();
for e in a.iter() {
proving_key.a.push(p1_to_vec(e));
}
let b1 = params.b_g1.clone();
for e in b1.iter() {
proving_key.b1.push(p1_to_vec(e));
}
let b2 = params.b_g2.clone();
for e in b2.iter() {
proving_key.b2.push(p2_to_vec(e));
}
let c = params.l.clone();
for _ in 0..params.vk.ic.len() {
proving_key.c.push(None);
}
for e in c.iter() {
proving_key.c.push(Some(p1_to_vec(e)));
}
let vk_alfa_1 = params.vk.alpha_g1.clone();
proving_key.vk_alfa_1 = p1_to_vec(&vk_alfa_1);
let vk_beta_1 = params.vk.beta_g1.clone();
proving_key.vk_beta_1 = p1_to_vec(&vk_beta_1);
let vk_delta_1 = params.vk.delta_g1.clone();
proving_key.vk_delta_1 = p1_to_vec(&vk_delta_1);
let vk_beta_2 = params.vk.beta_g2.clone();
proving_key.vk_beta_2 = p2_to_vec(&vk_beta_2);
let vk_delta_2 = params.vk.delta_g2.clone();
proving_key.vk_delta_2 = p2_to_vec(&vk_delta_2);
let h = params.h.clone();
for e in h.iter() {
proving_key.h.push(p1_to_vec(e));
}
let mut verification_key = VerifyingKeyJson {
ic: vec![],
vk_alfa_1: vec![],
vk_beta_2: vec![],
vk_gamma_2: vec![],
vk_delta_2: vec![],
vk_alfabeta_12: vec![],
let verification_key = VerifyingKeyJson {
ic: params.vk.ic.iter().map(|e| p1_to_vec(e)).collect_vec(),
vk_alfa_1: p1_to_vec(&params.vk.alpha_g1),
vk_beta_2: p2_to_vec(&params.vk.beta_g2),
vk_gamma_2: p2_to_vec(&params.vk.gamma_g2),
vk_delta_2: p2_to_vec(&params.vk.delta_g2),
vk_alfabeta_12: pairing_to_vec(&Bn256::pairing(params.vk.alpha_g1, params.vk.beta_g2)),
};
let ic = params.vk.ic.clone();
for e in ic.iter() {
verification_key.ic.push(p1_to_vec(e));
}
verification_key.vk_alfa_1 = p1_to_vec(&vk_alfa_1);
verification_key.vk_beta_2 = p2_to_vec(&vk_beta_2);
let vk_gamma_2 = params.vk.gamma_g2.clone();
verification_key.vk_gamma_2 = p2_to_vec(&vk_gamma_2);
verification_key.vk_delta_2 = p2_to_vec(&vk_delta_2);
verification_key.vk_alfabeta_12 = pairing_to_vec(&Bn256::pairing(vk_alfa_1, vk_beta_2));
let pk_json = serde_json::to_string(&proving_key).unwrap();
fs::write(pk_filename, pk_json.as_bytes()).unwrap();
let vk_json = serde_json::to_string(&verification_key).unwrap();
fs::write(pk_filename, pk_json.as_bytes()).unwrap();
fs::write(vk_filename, vk_json.as_bytes()).unwrap();
println!("Created {} and {}.", pk_filename, vk_filename);

4
phase2/src/bin/generate_verifier.rs
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@ -12,6 +12,7 @@ use std::fs;
use std::fs::OpenOptions;
use num_bigint::BigUint;
use num_traits::Num;
use phase2::utils::repr_to_big;
use phase2::parameters::MPCParameters;
use bellman_ce::pairing::{
Engine,
@ -43,9 +44,6 @@ fn main() {
let params = MPCParameters::read(reader, should_filter_points_at_infinity, true).expect("unable to read params");
let vk = &params.get_params().vk;
let repr_to_big = |r| {
BigUint::from_str_radix(&format!("{}", r)[2..], 16).unwrap().to_str_radix(10)
};
let p1_to_str = |p: &<Bn256 as Engine>::G1Affine| {
let x = repr_to_big(p.get_x().into_repr());
let y = repr_to_big(p.get_y().into_repr());

7
phase2/src/bin/prove.rs
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@ -4,10 +4,12 @@ extern crate exitcode;
extern crate serde;
extern crate num_bigint;
extern crate num_traits;
extern crate itertools;
use std::fs;
use std::fs::OpenOptions;
use serde::{Deserialize, Serialize};
use itertools::Itertools;
use phase2::parameters::MPCParameters;
use phase2::circom_circuit::CircomCircuit;
use phase2::utils::{
@ -78,10 +80,7 @@ fn main() {
let proof_json = serde_json::to_string(&proof).unwrap();
fs::write(proof_filename, proof_json.as_bytes()).unwrap();
let mut public_inputs = vec![];
for x in input[1..].iter() {
public_inputs.push(repr_to_big(x.into_repr()));
}
let public_inputs = input[1..].iter().map(|x| repr_to_big(x.into_repr())).collect_vec();
let public_json = serde_json::to_string(&public_inputs).unwrap();
fs::write(public_filename, public_json.as_bytes()).unwrap();

47
phase2/src/circom_circuit.rs
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@ -6,6 +6,7 @@ use std::str;
use std::fs;
use std::fs::OpenOptions;
use std::collections::BTreeMap;
use itertools::Itertools;
use std::io::{
Read,
Write,
@ -83,18 +84,13 @@ impl<'a, E: Engine> CircomCircuit<E> {
let num_inputs = circuit_json.num_inputs + circuit_json.num_outputs + 1;
let num_aux = circuit_json.num_variables - num_inputs;
fn convert_constraint<EE: Engine>(lc: &BTreeMap<String, String>) -> Vec<(usize, EE::Fr)> {
let mut coeffs = vec![];
for (var_index_str, coefficient_str) in lc {
coeffs.push((var_index_str.parse().unwrap(), EE::Fr::from_str(coefficient_str).unwrap()));
}
return coeffs;
}
let convert_constraint = |lc: &BTreeMap<String, String>| {
lc.iter().map(|(index, coeff)| (index.parse().unwrap(), E::Fr::from_str(coeff).unwrap())).collect_vec()
};
let mut constraints = vec![];
for constraint in circuit_json.constraints.iter() {
constraints.push((convert_constraint::<E>(&constraint[0]), convert_constraint::<E>(&constraint[1]), convert_constraint::<E>(&constraint[2])));
}
let constraints = circuit_json.constraints.iter().map(
|c| (convert_constraint(&c[0]), convert_constraint(&c[1]), convert_constraint(&c[2]))
).collect_vec();
return CircomCircuit {
num_inputs: num_inputs,
@ -130,23 +126,22 @@ impl<'a, E: Engine> Circuit<E> for CircomCircuit<E> {
})?;
}
fn make_lc<E: Engine>(lc_data: Vec<(usize, E::Fr)>, num_inputs: usize) -> LinearCombination<E> {
let mut lc = LinearCombination::<E>::zero();
for (index, coeff) in lc_data {
let var_index = if index < num_inputs {
Index::Input(index)
} else {
Index::Aux(index - num_inputs)
};
lc = lc + (coeff, Variable::new_unchecked(var_index))
}
return lc;
}
let make_index = |index|
if index < self.num_inputs {
Index::Input(index)
} else {
Index::Aux(index - self.num_inputs)
};
let make_lc = |lc_data: Vec<(usize, E::Fr)>|
lc_data.iter().fold(
LinearCombination::<E>::zero(),
|lc: LinearCombination<E>, (index, coeff)| lc + (*coeff, Variable::new_unchecked(make_index(*index)))
);
for (i, constraint) in self.constraints.iter().enumerate() {
cs.enforce(|| format!("constraint {}", i),
|_| make_lc(constraint.0.clone(), self.num_inputs),
|_| make_lc(constraint.1.clone(), self.num_inputs),
|_| make_lc(constraint.2.clone(), self.num_inputs),
|_| make_lc(constraint.0.clone()),
|_| make_lc(constraint.1.clone()),
|_| make_lc(constraint.2.clone()),
);
}
Ok(())

2
phase2/src/lib.rs
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@ -11,6 +11,8 @@ extern crate crossbeam;
extern crate num_bigint;
extern crate num_traits;
extern crate cfg_if;
extern crate itertools;
use cfg_if::cfg_if;
pub mod keypair;