bn/oldexamples/joux.rs

25 lines
843 B
Rust

extern crate bn;
extern crate rand;
use bn::{Field, Scalar, G1, G2, pairing};
fn main() {
let rng = &mut rand::thread_rng();
// Generate private keys
let alice_sk = Scalar::random(rng);
let bob_sk = Scalar::random(rng);
let carol_sk = Scalar::random(rng);
// Generate public keys in G1 and G2
let (alice_pk1, alice_pk2) = (G1::one() * &alice_sk, G2::one() * &alice_sk);
let (bob_pk1, bob_pk2) = (G1::one() * &bob_sk, G2::one() * &bob_sk);
let (carol_pk1, carol_pk2) = (G1::one() * &carol_sk, G2::one() * &carol_sk);
// Each party computes the shared secret
let alice_ss = pairing(&bob_pk1, &carol_pk2) ^ &alice_sk;
let bob_ss = pairing(&carol_pk1, &alice_pk2) ^ &bob_sk;
let carol_ss = pairing(&alice_pk1, &bob_pk2) ^ &carol_sk;
assert!(alice_ss == bob_ss && bob_ss == carol_ss);
}