75 lines
3.3 KiB
Rust
75 lines
3.3 KiB
Rust
/* Copyright (C) 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
|
|
extern crate screech;
|
|
extern crate crypto;
|
|
extern crate time;
|
|
extern crate rustc_serialize;
|
|
extern crate byteorder;
|
|
|
|
use screech::*;
|
|
use byteorder::{ByteOrder, BigEndian, LittleEndian};
|
|
use crypto::curve25519::curve25519_base;
|
|
use crypto::blake2s::Blake2s;
|
|
use rustc_serialize::base64::FromBase64;
|
|
use std::net::*;
|
|
|
|
fn memcpy(out: &mut [u8], data: &[u8]) {
|
|
for count in 0..data.len() {
|
|
out[count] = data[count];
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let send_addr = "demo.wireguard.io:12913".to_socket_addrs().unwrap().next().unwrap();
|
|
let listen_addr = "0.0.0.0:0".to_socket_addrs().unwrap().next().unwrap();
|
|
let socket = UdpSocket::bind(listen_addr).unwrap();
|
|
let mut empty_payload = [0; 0];
|
|
|
|
let mut their_public = [0; 32];
|
|
memcpy(&mut their_public, &"qRCwZSKInrMAq5sepfCdaCsRJaoLe5jhtzfiw7CjbwM=".from_base64().unwrap());
|
|
let mut my_private = [0; 32];
|
|
memcpy(&mut my_private, &"WAmgVYXkbT2bCtdcDwolI88/iVi/aV3/PHcUBTQSYmo=".from_base64().unwrap());
|
|
let mut my_preshared = [0; 32];
|
|
memcpy(&mut my_preshared, &"FpCyhws9cxwWoV4xELtfJvjJN+zQVRPISllRWgeopVE=".from_base64().unwrap());
|
|
let my_public = curve25519_base(&my_private);
|
|
let mut my_keypair : Dh25519 = Default::default();
|
|
my_keypair.set(&my_private, &my_public);
|
|
let mut owner : HandshakeCryptoOwner<RandomOs, Dh25519, CipherChaChaPoly, HashBLAKE2s> = Default::default();
|
|
owner.set_s(my_keypair);
|
|
owner.set_rs(&their_public);
|
|
let mut cipherstate1 : CipherState<CipherChaChaPoly> = Default::default();
|
|
let mut cipherstate2 : CipherState<CipherChaChaPoly> = Default::default();
|
|
let mut handshake = HandshakeState::new_from_owner(&mut owner, true, HandshakePattern::IK, "WireGuard v0 zx2c4 Jason@zx2c4.com".as_bytes(), Some(&my_preshared[..]), &mut cipherstate1, &mut cipherstate2);
|
|
|
|
let now = time::get_time();
|
|
let mut tai64n = [0; 12];
|
|
BigEndian::write_i64(&mut tai64n[0..], 4611686018427387914ULL + now.sec);
|
|
BigEndian::write_i32(&mut tai64n[8..], now.nsec);
|
|
let mut initiation_packet = [0; 145];
|
|
initiation_packet[0] = 1; /* Type: Initiation */
|
|
LittleEndian::write_u32(&mut initiation_packet[1..], 28); /* Sender index: 28 (arbitrary) */
|
|
handshake.write_message(&tai64n, &mut initiation_packet[5..]);
|
|
let mut mac_material = [0; 143];
|
|
memcpy(&mut mac_material, &their_public);
|
|
memcpy(&mut mac_material[32..], &initiation_packet[0..113]);
|
|
let mut mac = [0; 16];
|
|
Blake2s::blake2s(&mut mac, &mac_material, &my_preshared);
|
|
memcpy(&mut initiation_packet[113..], &mac);
|
|
socket.send_to(&initiation_packet, &send_addr).unwrap();
|
|
|
|
let mut response_packet = [0; 89];
|
|
socket.recv_from(&mut response_packet).unwrap();
|
|
assert!(response_packet[0] == 2 /* Type: Response */);
|
|
let their_index = LittleEndian::read_u32(&response_packet[1..]);
|
|
let our_index = LittleEndian::read_u32(&response_packet[5..]);
|
|
assert!(our_index == 28);
|
|
let (payload_len, last) = handshake.read_message(&response_packet[9..57], &mut empty_payload).unwrap();
|
|
assert!(payload_len == 0 && last);
|
|
|
|
let mut keepalive_packet = [0; 29];
|
|
keepalive_packet[0] = 4; /* Type: Data */
|
|
LittleEndian::write_u32(&mut keepalive_packet[1..], their_index);
|
|
LittleEndian::write_u64(&mut keepalive_packet[5..], cipherstate1.n);
|
|
cipherstate1.encrypt(&empty_payload, &mut keepalive_packet[13..]); /* Empty payload means keepalive */
|
|
socket.send_to(&keepalive_packet, &send_addr).unwrap();
|
|
}
|