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use super::*;
use hex;
use rand::rngs::OsRng;
use std::net::SocketAddr;
use std::thread;
use std::time::Duration;
use rand::prelude::*;
use x25519_dalek::PublicKey;
use x25519_dalek::StaticSecret;
use super::messages::{Initiation, Response};
fn setup_devices<R: RngCore + CryptoRng>(rng: &mut R) -> (PublicKey, Device, PublicKey, Device) {
// generate new keypairs
let sk1 = StaticSecret::new(rng);
let pk1 = PublicKey::from(&sk1);
let sk2 = StaticSecret::new(rng);
let pk2 = PublicKey::from(&sk2);
// pick random psk
let mut psk = [0u8; 32];
rng.fill_bytes(&mut psk[..]);
// intialize devices on both ends
let mut dev1 = Device::new();
let mut dev2 = Device::new();
dev1.set_sk(Some(sk1));
dev2.set_sk(Some(sk2));
dev1.add(pk2).unwrap();
dev2.add(pk1).unwrap();
dev1.set_psk(pk2, psk).unwrap();
dev2.set_psk(pk1, psk).unwrap();
(pk1, dev1, pk2, dev2)
}
fn wait() {
thread::sleep(Duration::from_millis(20));
}
/* Test longest possible handshake interaction (7 messages):
*
* 1. I -> R (initation)
* 2. I <- R (cookie reply)
* 3. I -> R (initation)
* 4. I <- R (response)
* 5. I -> R (cookie reply)
* 6. I -> R (initation)
* 7. I <- R (response)
*/
#[test]
fn handshake_under_load() {
let mut rng = OsRng::new().unwrap();
let (_pk1, dev1, pk2, dev2) = setup_devices(&mut rng);
let src1: SocketAddr = "172.16.0.1:8080".parse().unwrap();
let src2: SocketAddr = "172.16.0.2:7070".parse().unwrap();
// 1. device-1 : create first initation
let msg_init = dev1.begin(&mut rng, &pk2).unwrap();
// 2. device-2 : responds with CookieReply
let msg_cookie = match dev2.process(&mut rng, &msg_init, Some(&src1)).unwrap() {
(None, Some(msg), None) => msg,
_ => panic!("unexpected response"),
};
// device-1 : processes CookieReply (no response)
match dev1.process(&mut rng, &msg_cookie, Some(&src2)).unwrap() {
(None, None, None) => (),
_ => panic!("unexpected response"),
}
// avoid initation flood detection
wait();
// 3. device-1 : create second initation
let msg_init = dev1.begin(&mut rng, &pk2).unwrap();
// 4. device-2 : responds with noise response
let msg_response = match dev2.process(&mut rng, &msg_init, Some(&src1)).unwrap() {
(Some(_), Some(msg), Some(kp)) => {
assert_eq!(kp.initiator, false);
msg
}
_ => panic!("unexpected response"),
};
// 5. device-1 : responds with CookieReply
let msg_cookie = match dev1.process(&mut rng, &msg_response, Some(&src2)).unwrap() {
(None, Some(msg), None) => msg,
_ => panic!("unexpected response"),
};
// device-2 : processes CookieReply (no response)
match dev2.process(&mut rng, &msg_cookie, Some(&src1)).unwrap() {
(None, None, None) => (),
_ => panic!("unexpected response"),
}
// avoid initation flood detection
wait();
// 6. device-1 : create third initation
let msg_init = dev1.begin(&mut rng, &pk2).unwrap();
// 7. device-2 : responds with noise response
let (msg_response, kp1) = match dev2.process(&mut rng, &msg_init, Some(&src1)).unwrap() {
(Some(_), Some(msg), Some(kp)) => {
assert_eq!(kp.initiator, false);
(msg, kp)
}
_ => panic!("unexpected response"),
};
// device-1 : process noise response
let kp2 = match dev1.process(&mut rng, &msg_response, Some(&src2)).unwrap() {
(Some(_), None, Some(kp)) => {
assert_eq!(kp.initiator, true);
kp
}
_ => panic!("unexpected response"),
};
assert_eq!(kp1.send, kp2.recv);
assert_eq!(kp1.recv, kp2.send);
}
#[test]
fn handshake_no_load() {
let mut rng = OsRng::new().unwrap();
let (pk1, mut dev1, pk2, mut dev2) = setup_devices(&mut rng);
// do a few handshakes (every handshake should succeed)
for i in 0..10 {
println!("handshake : {}", i);
// create initiation
let msg1 = dev1.begin(&mut rng, &pk2).unwrap();
println!("msg1 = {} : {} bytes", hex::encode(&msg1[..]), msg1.len());
println!(
"msg1 = {:?}",
Initiation::parse(&msg1[..]).expect("failed to parse initiation")
);
// process initiation and create response
let (_, msg2, ks_r) = dev2
.process(&mut rng, &msg1, None)
.expect("failed to process initiation");
let ks_r = ks_r.unwrap();
let msg2 = msg2.unwrap();
println!("msg2 = {} : {} bytes", hex::encode(&msg2[..]), msg2.len());
println!(
"msg2 = {:?}",
Response::parse(&msg2[..]).expect("failed to parse response")
);
assert!(!ks_r.initiator, "Responders key-pair is confirmed");
// process response and obtain confirmed key-pair
let (_, msg3, ks_i) = dev1
.process(&mut rng, &msg2, None)
.expect("failed to process response");
let ks_i = ks_i.unwrap();
assert!(msg3.is_none(), "Returned message after response");
assert!(ks_i.initiator, "Initiators key-pair is not confirmed");
assert_eq!(ks_i.send, ks_r.recv, "KeyI.send != KeyR.recv");
assert_eq!(ks_i.recv, ks_r.send, "KeyI.recv != KeyR.send");
dev1.release(ks_i.local_id());
dev2.release(ks_r.local_id());
// avoid initation flood detection
wait();
}
dev1.remove(pk2).unwrap();
dev2.remove(pk1).unwrap();
}
|
