--- /dev/null
+use ln::msgs::HandleError;
+use ln::msgs;
+
+use bitcoin_hashes::{Hash, HashEngine, Hmac, HmacEngine};
+use bitcoin_hashes::sha256::Hash as Sha256;
+
+use secp256k1::Secp256k1;
+use secp256k1::key::{PublicKey,SecretKey};
+use secp256k1::ecdh::SharedSecret;
+use secp256k1;
+
+use util::chacha20poly1305rfc::ChaCha20Poly1305RFC;
+use util::byte_utils;
+
+// Sha256("Noise_XK_secp256k1_ChaChaPoly_SHA256")
+const NOISE_CK: [u8; 32] = [0x26, 0x40, 0xf5, 0x2e, 0xeb, 0xcd, 0x9e, 0x88, 0x29, 0x58, 0x95, 0x1c, 0x79, 0x42, 0x50, 0xee, 0xdb, 0x28, 0x00, 0x2c, 0x05, 0xd7, 0xdc, 0x2e, 0xa0, 0xf1, 0x95, 0x40, 0x60, 0x42, 0xca, 0xf1];
+// Sha256(NOISE_CK || "lightning")
+const NOISE_H: [u8; 32] = [0xd1, 0xfb, 0xf6, 0xde, 0xe4, 0xf6, 0x86, 0xf1, 0x32, 0xfd, 0x70, 0x2c, 0x4a, 0xbf, 0x8f, 0xba, 0x4b, 0xb4, 0x20, 0xd8, 0x9d, 0x2a, 0x04, 0x8a, 0x3c, 0x4f, 0x4c, 0x09, 0x2e, 0x37, 0xb6, 0x76];
+
+pub enum NextNoiseStep {
+ ActOne,
+ ActTwo,
+ ActThree,
+ NoiseComplete,
+}
+
+#[derive(PartialEq)]
+enum NoiseStep {
+ PreActOne,
+ PostActOne,
+ PostActTwo,
+ // When done swap noise_state for NoiseState::Finished
+}
+
+struct BidirectionalNoiseState {
+ h: [u8; 32],
+ ck: [u8; 32],
+}
+enum DirectionalNoiseState {
+ Outbound {
+ ie: SecretKey,
+ },
+ Inbound {
+ ie: Option<PublicKey>, // filled in if state >= PostActOne
+ re: Option<SecretKey>, // filled in if state >= PostActTwo
+ temp_k2: Option<[u8; 32]>, // filled in if state >= PostActTwo
+ }
+}
+enum NoiseState {
+ InProgress {
+ state: NoiseStep,
+ directional_state: DirectionalNoiseState,
+ bidirectional_state: BidirectionalNoiseState,
+ },
+ Finished {
+ sk: [u8; 32],
+ sn: u64,
+ sck: [u8; 32],
+ rk: [u8; 32],
+ rn: u64,
+ rck: [u8; 32],
+ }
+}
+
+pub struct PeerChannelEncryptor {
+ secp_ctx: Secp256k1<secp256k1::SignOnly>,
+ their_node_id: Option<PublicKey>, // filled in for outbound, or inbound after noise_state is Finished
+
+ noise_state: NoiseState,
+}
+
+impl PeerChannelEncryptor {
+ pub fn new_outbound(their_node_id: PublicKey, ephemeral_key: SecretKey) -> PeerChannelEncryptor {
+ let secp_ctx = Secp256k1::signing_only();
+
+ let mut sha = Sha256::engine();
+ sha.input(&NOISE_H);
+ sha.input(&their_node_id.serialize()[..]);
+ let h = Sha256::from_engine(sha).into_inner();
+
+ PeerChannelEncryptor {
+ their_node_id: Some(their_node_id),
+ secp_ctx: secp_ctx,
+ noise_state: NoiseState::InProgress {
+ state: NoiseStep::PreActOne,
+ directional_state: DirectionalNoiseState::Outbound {
+ ie: ephemeral_key,
+ },
+ bidirectional_state: BidirectionalNoiseState {
+ h: h,
+ ck: NOISE_CK,
+ },
+ }
+ }
+ }
+
+ pub fn new_inbound(our_node_secret: &SecretKey) -> PeerChannelEncryptor {
+ let secp_ctx = Secp256k1::signing_only();
+
+ let mut sha = Sha256::engine();
+ sha.input(&NOISE_H);
+ let our_node_id = PublicKey::from_secret_key(&secp_ctx, our_node_secret);
+ sha.input(&our_node_id.serialize()[..]);
+ let h = Sha256::from_engine(sha).into_inner();
+
+ PeerChannelEncryptor {
+ their_node_id: None,
+ secp_ctx: secp_ctx,
+ noise_state: NoiseState::InProgress {
+ state: NoiseStep::PreActOne,
+ directional_state: DirectionalNoiseState::Inbound {
+ ie: None,
+ re: None,
+ temp_k2: None,
+ },
+ bidirectional_state: BidirectionalNoiseState {
+ h: h,
+ ck: NOISE_CK,
+ },
+ }
+ }
+ }
+
+ #[inline]
+ fn encrypt_with_ad(res: &mut[u8], n: u64, key: &[u8; 32], h: &[u8], plaintext: &[u8]) {
+ let mut nonce = [0; 12];
+ nonce[4..].copy_from_slice(&byte_utils::le64_to_array(n));
+
+ let mut chacha = ChaCha20Poly1305RFC::new(key, &nonce, h);
+ let mut tag = [0; 16];
+ chacha.encrypt(plaintext, &mut res[0..plaintext.len()], &mut tag);
+ res[plaintext.len()..].copy_from_slice(&tag);
+ }
+
+ #[inline]
+ fn decrypt_with_ad(res: &mut[u8], n: u64, key: &[u8; 32], h: &[u8], cyphertext: &[u8]) -> Result<(), HandleError> {
+ let mut nonce = [0; 12];
+ nonce[4..].copy_from_slice(&byte_utils::le64_to_array(n));
+
+ let mut chacha = ChaCha20Poly1305RFC::new(key, &nonce, h);
+ if !chacha.decrypt(&cyphertext[0..cyphertext.len() - 16], res, &cyphertext[cyphertext.len() - 16..]) {
+ return Err(HandleError{err: "Bad MAC", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })});
+ }
+ Ok(())
+ }
+
+ fn hkdf_extract_expand(salt: &[u8], ikm: &[u8]) -> ([u8; 32], [u8; 32]) {
+ let mut hmac = HmacEngine::<Sha256>::new(salt);
+ hmac.input(ikm);
+ let prk = Hmac::from_engine(hmac).into_inner();
+ let mut hmac = HmacEngine::<Sha256>::new(&prk[..]);
+ hmac.input(&[1; 1]);
+ let t1 = Hmac::from_engine(hmac).into_inner();
+ let mut hmac = HmacEngine::<Sha256>::new(&prk[..]);
+ hmac.input(&t1);
+ hmac.input(&[2; 1]);
+ (t1, Hmac::from_engine(hmac).into_inner())
+ }
+
+ #[inline]
+ fn hkdf(state: &mut BidirectionalNoiseState, ss: SharedSecret) -> [u8; 32] {
+ let (t1, t2) = Self::hkdf_extract_expand(&state.ck, &ss[..]);
+ state.ck = t1;
+ t2
+ }
+
+ #[inline]
+ fn outbound_noise_act<T: secp256k1::Signing>(secp_ctx: &Secp256k1<T>, state: &mut BidirectionalNoiseState, our_key: &SecretKey, their_key: &PublicKey) -> ([u8; 50], [u8; 32]) {
+ let our_pub = PublicKey::from_secret_key(secp_ctx, &our_key);
+
+ let mut sha = Sha256::engine();
+ sha.input(&state.h);
+ sha.input(&our_pub.serialize()[..]);
+ state.h = Sha256::from_engine(sha).into_inner();
+
+ let ss = SharedSecret::new(&their_key, &our_key);
+ let temp_k = PeerChannelEncryptor::hkdf(state, ss);
+
+ let mut res = [0; 50];
+ res[1..34].copy_from_slice(&our_pub.serialize()[..]);
+ PeerChannelEncryptor::encrypt_with_ad(&mut res[34..], 0, &temp_k, &state.h, &[0; 0]);
+
+ let mut sha = Sha256::engine();
+ sha.input(&state.h);
+ sha.input(&res[34..]);
+ state.h = Sha256::from_engine(sha).into_inner();
+
+ (res, temp_k)
+ }
+
+ #[inline]
+ fn inbound_noise_act(state: &mut BidirectionalNoiseState, act: &[u8], our_key: &SecretKey) -> Result<(PublicKey, [u8; 32]), HandleError> {
+ assert_eq!(act.len(), 50);
+
+ if act[0] != 0 {
+ return Err(HandleError{err: "Unknown handshake version number", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })});
+ }
+
+ let their_pub = match PublicKey::from_slice(&act[1..34]) {
+ Err(_) => return Err(HandleError{err: "Invalid public key", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}),
+ Ok(key) => key,
+ };
+
+ let mut sha = Sha256::engine();
+ sha.input(&state.h);
+ sha.input(&their_pub.serialize()[..]);
+ state.h = Sha256::from_engine(sha).into_inner();
+
+ let ss = SharedSecret::new(&their_pub, &our_key);
+ let temp_k = PeerChannelEncryptor::hkdf(state, ss);
+
+ let mut dec = [0; 0];
+ PeerChannelEncryptor::decrypt_with_ad(&mut dec, 0, &temp_k, &state.h, &act[34..])?;
+
+ let mut sha = Sha256::engine();
+ sha.input(&state.h);
+ sha.input(&act[34..]);
+ state.h = Sha256::from_engine(sha).into_inner();
+
+ Ok((their_pub, temp_k))
+ }
+
+ pub fn get_act_one(&mut self) -> [u8; 50] {
+ match self.noise_state {
+ NoiseState::InProgress { ref mut state, ref directional_state, ref mut bidirectional_state } =>
+ match directional_state {
+ &DirectionalNoiseState::Outbound { ref ie } => {
+ if *state != NoiseStep::PreActOne {
+ panic!("Requested act at wrong step");
+ }
+
+ let (res, _) = PeerChannelEncryptor::outbound_noise_act(&self.secp_ctx, bidirectional_state, &ie, &self.their_node_id.unwrap());
+ *state = NoiseStep::PostActOne;
+ res
+ },
+ _ => panic!("Wrong direction for act"),
+ },
+ _ => panic!("Cannot get act one after noise handshake completes"),
+ }
+ }
+
+ pub fn process_act_one_with_keys(&mut self, act_one: &[u8], our_node_secret: &SecretKey, our_ephemeral: SecretKey) -> Result<[u8; 50], HandleError> {
+ assert_eq!(act_one.len(), 50);
+
+ match self.noise_state {
+ NoiseState::InProgress { ref mut state, ref mut directional_state, ref mut bidirectional_state } =>
+ match directional_state {
+ &mut DirectionalNoiseState::Inbound { ref mut ie, ref mut re, ref mut temp_k2 } => {
+ if *state != NoiseStep::PreActOne {
+ panic!("Requested act at wrong step");
+ }
+
+ let (their_pub, _) = PeerChannelEncryptor::inbound_noise_act(bidirectional_state, act_one, &our_node_secret)?;
+ ie.get_or_insert(their_pub);
+
+ re.get_or_insert(our_ephemeral);
+
+ let (res, temp_k) = PeerChannelEncryptor::outbound_noise_act(&self.secp_ctx, bidirectional_state, &re.unwrap(), &ie.unwrap());
+ *temp_k2 = Some(temp_k);
+ *state = NoiseStep::PostActTwo;
+ Ok(res)
+ },
+ _ => panic!("Wrong direction for act"),
+ },
+ _ => panic!("Cannot get act one after noise handshake completes"),
+ }
+ }
+
+ pub fn process_act_two(&mut self, act_two: &[u8], our_node_secret: &SecretKey) -> Result<([u8; 66], PublicKey), HandleError> {
+ assert_eq!(act_two.len(), 50);
+
+ let final_hkdf;
+ let ck;
+ let res: [u8; 66] = match self.noise_state {
+ NoiseState::InProgress { ref state, ref directional_state, ref mut bidirectional_state } =>
+ match directional_state {
+ &DirectionalNoiseState::Outbound { ref ie } => {
+ if *state != NoiseStep::PostActOne {
+ panic!("Requested act at wrong step");
+ }
+
+ let (re, temp_k2) = PeerChannelEncryptor::inbound_noise_act(bidirectional_state, act_two, &ie)?;
+
+ let mut res = [0; 66];
+ let our_node_id = PublicKey::from_secret_key(&self.secp_ctx, &our_node_secret);
+
+ PeerChannelEncryptor::encrypt_with_ad(&mut res[1..50], 1, &temp_k2, &bidirectional_state.h, &our_node_id.serialize()[..]);
+
+ let mut sha = Sha256::engine();
+ sha.input(&bidirectional_state.h);
+ sha.input(&res[1..50]);
+ bidirectional_state.h = Sha256::from_engine(sha).into_inner();
+
+ let ss = SharedSecret::new(&re, our_node_secret);
+ let temp_k = PeerChannelEncryptor::hkdf(bidirectional_state, ss);
+
+ PeerChannelEncryptor::encrypt_with_ad(&mut res[50..], 0, &temp_k, &bidirectional_state.h, &[0; 0]);
+ final_hkdf = Self::hkdf_extract_expand(&bidirectional_state.ck, &[0; 0]);
+ ck = bidirectional_state.ck.clone();
+ res
+ },
+ _ => panic!("Wrong direction for act"),
+ },
+ _ => panic!("Cannot get act one after noise handshake completes"),
+ };
+
+ let (sk, rk) = final_hkdf;
+ self.noise_state = NoiseState::Finished {
+ sk: sk,
+ sn: 0,
+ sck: ck.clone(),
+ rk: rk,
+ rn: 0,
+ rck: ck,
+ };
+
+ Ok((res, self.their_node_id.unwrap().clone()))
+ }
+
+ pub fn process_act_three(&mut self, act_three: &[u8]) -> Result<PublicKey, HandleError> {
+ assert_eq!(act_three.len(), 66);
+
+ let final_hkdf;
+ let ck;
+ match self.noise_state {
+ NoiseState::InProgress { ref state, ref directional_state, ref mut bidirectional_state } =>
+ match directional_state {
+ &DirectionalNoiseState::Inbound { ie: _, ref re, ref temp_k2 } => {
+ if *state != NoiseStep::PostActTwo {
+ panic!("Requested act at wrong step");
+ }
+ if act_three[0] != 0 {
+ return Err(HandleError{err: "Unknown handshake version number", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })});
+ }
+
+ let mut their_node_id = [0; 33];
+ PeerChannelEncryptor::decrypt_with_ad(&mut their_node_id, 1, &temp_k2.unwrap(), &bidirectional_state.h, &act_three[1..50])?;
+ self.their_node_id = Some(match PublicKey::from_slice(&their_node_id) {
+ Ok(key) => key,
+ Err(_) => return Err(HandleError{err: "Bad node_id from peer", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}),
+ });
+
+ let mut sha = Sha256::engine();
+ sha.input(&bidirectional_state.h);
+ sha.input(&act_three[1..50]);
+ bidirectional_state.h = Sha256::from_engine(sha).into_inner();
+
+ let ss = SharedSecret::new(&self.their_node_id.unwrap(), &re.unwrap());
+ let temp_k = PeerChannelEncryptor::hkdf(bidirectional_state, ss);
+
+ PeerChannelEncryptor::decrypt_with_ad(&mut [0; 0], 0, &temp_k, &bidirectional_state.h, &act_three[50..])?;
+ final_hkdf = Self::hkdf_extract_expand(&bidirectional_state.ck, &[0; 0]);
+ ck = bidirectional_state.ck.clone();
+ },
+ _ => panic!("Wrong direction for act"),
+ },
+ _ => panic!("Cannot get act one after noise handshake completes"),
+ }
+
+ let (rk, sk) = final_hkdf;
+ self.noise_state = NoiseState::Finished {
+ sk: sk,
+ sn: 0,
+ sck: ck.clone(),
+ rk: rk,
+ rn: 0,
+ rck: ck,
+ };
+
+ Ok(self.their_node_id.unwrap().clone())
+ }
+
+ /// Encrypts the given message, returning the encrypted version
+ /// panics if msg.len() > 65535 or Noise handshake has not finished.
+ pub fn encrypt_message(&mut self, msg: &[u8]) -> Vec<u8> {
+ if msg.len() > 65535 {
+ panic!("Attempted to encrypt message longer than 65535 bytes!");
+ }
+
+ let mut res = Vec::with_capacity(msg.len() + 16*2 + 2);
+ res.resize(msg.len() + 16*2 + 2, 0);
+
+ match self.noise_state {
+ NoiseState::Finished { ref mut sk, ref mut sn, ref mut sck, rk: _, rn: _, rck: _ } => {
+ if *sn >= 1000 {
+ let (new_sck, new_sk) = Self::hkdf_extract_expand(sck, sk);
+ *sck = new_sck;
+ *sk = new_sk;
+ *sn = 0;
+ }
+
+ Self::encrypt_with_ad(&mut res[0..16+2], *sn, sk, &[0; 0], &byte_utils::be16_to_array(msg.len() as u16));
+ *sn += 1;
+
+ Self::encrypt_with_ad(&mut res[16+2..], *sn, sk, &[0; 0], msg);
+ *sn += 1;
+ },
+ _ => panic!("Tried to encrypt a message prior to noise handshake completion"),
+ }
+
+ res
+ }
+
+ /// Decrypts a message length header from the remote peer.
+ /// panics if noise handshake has not yet finished or msg.len() != 18
+ pub fn decrypt_length_header(&mut self, msg: &[u8]) -> Result<u16, HandleError> {
+ assert_eq!(msg.len(), 16+2);
+
+ match self.noise_state {
+ NoiseState::Finished { sk: _, sn: _, sck: _, ref mut rk, ref mut rn, ref mut rck } => {
+ if *rn >= 1000 {
+ let (new_rck, new_rk) = Self::hkdf_extract_expand(rck, rk);
+ *rck = new_rck;
+ *rk = new_rk;
+ *rn = 0;
+ }
+
+ let mut res = [0; 2];
+ Self::decrypt_with_ad(&mut res, *rn, rk, &[0; 0], msg)?;
+ *rn += 1;
+ Ok(byte_utils::slice_to_be16(&res))
+ },
+ _ => panic!("Tried to encrypt a message prior to noise handshake completion"),
+ }
+ }
+
+ /// Decrypts the given message.
+ /// panics if msg.len() > 65535 + 16
+ pub fn decrypt_message(&mut self, msg: &[u8]) -> Result<Vec<u8>, HandleError> {
+ if msg.len() > 65535 + 16 {
+ panic!("Attempted to encrypt message longer than 65535 bytes!");
+ }
+
+ match self.noise_state {
+ NoiseState::Finished { sk: _, sn: _, sck: _, ref rk, ref mut rn, rck: _ } => {
+ let mut res = Vec::with_capacity(msg.len() - 16);
+ res.resize(msg.len() - 16, 0);
+ Self::decrypt_with_ad(&mut res[..], *rn, rk, &[0; 0], msg)?;
+ *rn += 1;
+
+ Ok(res)
+ },
+ _ => panic!("Tried to encrypt a message prior to noise handshake completion"),
+ }
+ }
+
+ pub fn get_noise_step(&self) -> NextNoiseStep {
+ match self.noise_state {
+ NoiseState::InProgress {ref state, ..} => {
+ match state {
+ &NoiseStep::PreActOne => NextNoiseStep::ActOne,
+ &NoiseStep::PostActOne => NextNoiseStep::ActTwo,
+ &NoiseStep::PostActTwo => NextNoiseStep::ActThree,
+ }
+ },
+ NoiseState::Finished {..} => NextNoiseStep::NoiseComplete,
+ }
+ }
+
+ pub fn is_ready_for_encryption(&self) -> bool {
+ match self.noise_state {
+ NoiseState::InProgress {..} => { false },
+ NoiseState::Finished {..} => { true }
+ }
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use secp256k1::key::{PublicKey,SecretKey};
+
+ use hex;
+
+ use ln::peer_channel_encryptor::{PeerChannelEncryptor,NoiseState};
+
+ fn get_outbound_peer_for_initiator_test_vectors() -> PeerChannelEncryptor {
+ let their_node_id = PublicKey::from_slice(&hex::decode("028d7500dd4c12685d1f568b4c2b5048e8534b873319f3a8daa612b469132ec7f7").unwrap()[..]).unwrap();
+
+ let mut outbound_peer = PeerChannelEncryptor::new_outbound(their_node_id, SecretKey::from_slice(&hex::decode("1212121212121212121212121212121212121212121212121212121212121212").unwrap()[..]).unwrap());
+ assert_eq!(outbound_peer.get_act_one()[..], hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap()[..]);
+ outbound_peer
+ }
+
+ #[test]
+ fn noise_initiator_test_vectors() {
+ let our_node_id = SecretKey::from_slice(&hex::decode("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap();
+
+ {
+ // transport-initiator successful handshake
+ let mut outbound_peer = get_outbound_peer_for_initiator_test_vectors();
+
+ let act_two = hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap().to_vec();
+ assert_eq!(outbound_peer.process_act_two(&act_two[..], &our_node_id).unwrap().0[..], hex::decode("00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba").unwrap()[..]);
+
+ match outbound_peer.noise_state {
+ NoiseState::Finished { sk, sn, sck, rk, rn, rck } => {
+ assert_eq!(sk, hex::decode("969ab31b4d288cedf6218839b27a3e2140827047f2c0f01bf5c04435d43511a9").unwrap()[..]);
+ assert_eq!(sn, 0);
+ assert_eq!(sck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ assert_eq!(rk, hex::decode("bb9020b8965f4df047e07f955f3c4b88418984aadc5cdb35096b9ea8fa5c3442").unwrap()[..]);
+ assert_eq!(rn, 0);
+ assert_eq!(rck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ },
+ _ => panic!()
+ }
+ }
+ {
+ // transport-initiator act2 short read test
+ // Can't actually test this cause process_act_two requires you pass the right length!
+ }
+ {
+ // transport-initiator act2 bad version test
+ let mut outbound_peer = get_outbound_peer_for_initiator_test_vectors();
+
+ let act_two = hex::decode("0102466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap().to_vec();
+ assert!(outbound_peer.process_act_two(&act_two[..], &our_node_id).is_err());
+ }
+
+ {
+ // transport-initiator act2 bad key serialization test
+ let mut outbound_peer = get_outbound_peer_for_initiator_test_vectors();
+
+ let act_two = hex::decode("0004466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap().to_vec();
+ assert!(outbound_peer.process_act_two(&act_two[..], &our_node_id).is_err());
+ }
+
+ {
+ // transport-initiator act2 bad MAC test
+ let mut outbound_peer = get_outbound_peer_for_initiator_test_vectors();
+
+ let act_two = hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730af").unwrap().to_vec();
+ assert!(outbound_peer.process_act_two(&act_two[..], &our_node_id).is_err());
+ }
+ }
+
+ #[test]
+ fn noise_responder_test_vectors() {
+ let our_node_id = SecretKey::from_slice(&hex::decode("2121212121212121212121212121212121212121212121212121212121212121").unwrap()[..]).unwrap();
+ let our_ephemeral = SecretKey::from_slice(&hex::decode("2222222222222222222222222222222222222222222222222222222222222222").unwrap()[..]).unwrap();
+
+ {
+ // transport-responder successful handshake
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert_eq!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).unwrap()[..], hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap()[..]);
+
+ let act_three = hex::decode("00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba").unwrap().to_vec();
+ // test vector doesn't specify the initiator static key, but it's the same as the one
+ // from transport-initiator successful handshake
+ assert_eq!(inbound_peer.process_act_three(&act_three[..]).unwrap().serialize()[..], hex::decode("034f355bdcb7cc0af728ef3cceb9615d90684bb5b2ca5f859ab0f0b704075871aa").unwrap()[..]);
+
+ match inbound_peer.noise_state {
+ NoiseState::Finished { sk, sn, sck, rk, rn, rck } => {
+ assert_eq!(sk, hex::decode("bb9020b8965f4df047e07f955f3c4b88418984aadc5cdb35096b9ea8fa5c3442").unwrap()[..]);
+ assert_eq!(sn, 0);
+ assert_eq!(sck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ assert_eq!(rk, hex::decode("969ab31b4d288cedf6218839b27a3e2140827047f2c0f01bf5c04435d43511a9").unwrap()[..]);
+ assert_eq!(rn, 0);
+ assert_eq!(rck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ },
+ _ => panic!()
+ }
+ }
+ {
+ // transport-responder act1 short read test
+ // Can't actually test this cause process_act_one requires you pass the right length!
+ }
+ {
+ // transport-responder act1 bad version test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("01036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).is_err());
+ }
+ {
+ // transport-responder act1 bad key serialization test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one =hex::decode("00046360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).is_err());
+ }
+ {
+ // transport-responder act1 bad MAC test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6b").unwrap().to_vec();
+ assert!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).is_err());
+ }
+ {
+ // transport-responder act3 bad version test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert_eq!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).unwrap()[..], hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap()[..]);
+
+ let act_three = hex::decode("01b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba").unwrap().to_vec();
+ assert!(inbound_peer.process_act_three(&act_three[..]).is_err());
+ }
+ {
+ // transport-responder act3 short read test
+ // Can't actually test this cause process_act_three requires you pass the right length!
+ }
+ {
+ // transport-responder act3 bad MAC for ciphertext test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert_eq!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).unwrap()[..], hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap()[..]);
+
+ let act_three = hex::decode("00c9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba").unwrap().to_vec();
+ assert!(inbound_peer.process_act_three(&act_three[..]).is_err());
+ }
+ {
+ // transport-responder act3 bad rs test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert_eq!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).unwrap()[..], hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap()[..]);
+
+ let act_three = hex::decode("00bfe3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa2235536ad09a8ee351870c2bb7f78b754a26c6cef79a98d25139c856d7efd252c2ae73c").unwrap().to_vec();
+ assert!(inbound_peer.process_act_three(&act_three[..]).is_err());
+ }
+ {
+ // transport-responder act3 bad MAC test
+ let mut inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert_eq!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).unwrap()[..], hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap()[..]);
+
+ let act_three = hex::decode("00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139bb").unwrap().to_vec();
+ assert!(inbound_peer.process_act_three(&act_three[..]).is_err());
+ }
+ }
+
+
+ #[test]
+ fn message_encryption_decryption_test_vectors() {
+ // We use the same keys as the initiator and responder test vectors, so we copy those tests
+ // here and use them to encrypt.
+ let mut outbound_peer = get_outbound_peer_for_initiator_test_vectors();
+
+ {
+ let our_node_id = SecretKey::from_slice(&hex::decode("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap();
+
+ let act_two = hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap().to_vec();
+ assert_eq!(outbound_peer.process_act_two(&act_two[..], &our_node_id).unwrap().0[..], hex::decode("00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba").unwrap()[..]);
+
+ match outbound_peer.noise_state {
+ NoiseState::Finished { sk, sn, sck, rk, rn, rck } => {
+ assert_eq!(sk, hex::decode("969ab31b4d288cedf6218839b27a3e2140827047f2c0f01bf5c04435d43511a9").unwrap()[..]);
+ assert_eq!(sn, 0);
+ assert_eq!(sck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ assert_eq!(rk, hex::decode("bb9020b8965f4df047e07f955f3c4b88418984aadc5cdb35096b9ea8fa5c3442").unwrap()[..]);
+ assert_eq!(rn, 0);
+ assert_eq!(rck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ },
+ _ => panic!()
+ }
+ }
+
+ let mut inbound_peer;
+
+ {
+ // transport-responder successful handshake
+ let our_node_id = SecretKey::from_slice(&hex::decode("2121212121212121212121212121212121212121212121212121212121212121").unwrap()[..]).unwrap();
+ let our_ephemeral = SecretKey::from_slice(&hex::decode("2222222222222222222222222222222222222222222222222222222222222222").unwrap()[..]).unwrap();
+
+ inbound_peer = PeerChannelEncryptor::new_inbound(&our_node_id);
+
+ let act_one = hex::decode("00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a").unwrap().to_vec();
+ assert_eq!(inbound_peer.process_act_one_with_keys(&act_one[..], &our_node_id, our_ephemeral.clone()).unwrap()[..], hex::decode("0002466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f276e2470b93aac583c9ef6eafca3f730ae").unwrap()[..]);
+
+ let act_three = hex::decode("00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba").unwrap().to_vec();
+ // test vector doesn't specify the initiator static key, but it's the same as the one
+ // from transport-initiator successful handshake
+ assert_eq!(inbound_peer.process_act_three(&act_three[..]).unwrap().serialize()[..], hex::decode("034f355bdcb7cc0af728ef3cceb9615d90684bb5b2ca5f859ab0f0b704075871aa").unwrap()[..]);
+
+ match inbound_peer.noise_state {
+ NoiseState::Finished { sk, sn, sck, rk, rn, rck } => {
+ assert_eq!(sk, hex::decode("bb9020b8965f4df047e07f955f3c4b88418984aadc5cdb35096b9ea8fa5c3442").unwrap()[..]);
+ assert_eq!(sn, 0);
+ assert_eq!(sck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ assert_eq!(rk, hex::decode("969ab31b4d288cedf6218839b27a3e2140827047f2c0f01bf5c04435d43511a9").unwrap()[..]);
+ assert_eq!(rn, 0);
+ assert_eq!(rck, hex::decode("919219dbb2920afa8db80f9a51787a840bcf111ed8d588caf9ab4be716e42b01").unwrap()[..]);
+ },
+ _ => panic!()
+ }
+ }
+
+ for i in 0..1005 {
+ let msg = [0x68, 0x65, 0x6c, 0x6c, 0x6f];
+ let res = outbound_peer.encrypt_message(&msg);
+ assert_eq!(res.len(), 5 + 2*16 + 2);
+
+ let len_header = res[0..2+16].to_vec();
+ assert_eq!(inbound_peer.decrypt_length_header(&len_header[..]).unwrap() as usize, msg.len());
+ assert_eq!(inbound_peer.decrypt_message(&res[2+16..]).unwrap()[..], msg[..]);
+
+ if i == 0 {
+ assert_eq!(res, hex::decode("cf2b30ddf0cf3f80e7c35a6e6730b59fe802473180f396d88a8fb0db8cbcf25d2f214cf9ea1d95").unwrap());
+ } else if i == 1 {
+ assert_eq!(res, hex::decode("72887022101f0b6753e0c7de21657d35a4cb2a1f5cde2650528bbc8f837d0f0d7ad833b1a256a1").unwrap());
+ } else if i == 500 {
+ assert_eq!(res, hex::decode("178cb9d7387190fa34db9c2d50027d21793c9bc2d40b1e14dcf30ebeeeb220f48364f7a4c68bf8").unwrap());
+ } else if i == 501 {
+ assert_eq!(res, hex::decode("1b186c57d44eb6de4c057c49940d79bb838a145cb528d6e8fd26dbe50a60ca2c104b56b60e45bd").unwrap());
+ } else if i == 1000 {
+ assert_eq!(res, hex::decode("4a2f3cc3b5e78ddb83dcb426d9863d9d9a723b0337c89dd0b005d89f8d3c05c52b76b29b740f09").unwrap());
+ } else if i == 1001 {
+ assert_eq!(res, hex::decode("2ecd8c8a5629d0d02ab457a0fdd0f7b90a192cd46be5ecb6ca570bfc5e268338b1a16cf4ef2d36").unwrap());
+ }
+ }
+ }
+}
projects / rust-lightning / blobdiff