Merge pull request #123 from TheBlueMatt/2018-08-secp-0.10
[rust-lightning] / src / ln / channel.rs
index 76d45dd7188f23b3be202a746abb90a6c8a27af0..a54be7722384fd2da84ed7de9c801d48e7a527be 100644 (file)
@@ -251,7 +251,7 @@ pub struct Channel {
        channel_id: [u8; 32],
        channel_state: u32,
        channel_outbound: bool,
-       secp_ctx: Secp256k1,
+       secp_ctx: Secp256k1<secp256k1::All>,
        announce_publicly: bool,
        channel_value_satoshis: u64,
 
@@ -302,12 +302,12 @@ pub struct Channel {
        their_max_accepted_htlcs: u16,
        //implied by OUR_MAX_HTLCS: our_max_accepted_htlcs: u16,
 
-       their_funding_pubkey: PublicKey,
-       their_revocation_basepoint: PublicKey,
-       their_payment_basepoint: PublicKey,
-       their_delayed_payment_basepoint: PublicKey,
-       their_htlc_basepoint: PublicKey,
-       their_cur_commitment_point: PublicKey,
+       their_funding_pubkey: Option<PublicKey>,
+       their_revocation_basepoint: Option<PublicKey>,
+       their_payment_basepoint: Option<PublicKey>,
+       their_delayed_payment_basepoint: Option<PublicKey>,
+       their_htlc_basepoint: Option<PublicKey>,
+       their_cur_commitment_point: Option<PublicKey>,
 
        their_prev_commitment_point: Option<PublicKey>,
        their_node_id: PublicKey,
@@ -401,10 +401,10 @@ impl Channel {
                let feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
 
                let secp_ctx = Secp256k1::new();
-               let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).unwrap().serialize());
+               let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).serialize());
                let our_channel_monitor_claim_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script();
                let channel_monitor = ChannelMonitor::new(&chan_keys.revocation_base_key,
-                                                         &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key).unwrap(),
+                                                         &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key),
                                                          &chan_keys.htlc_base_key,
                                                          BREAKDOWN_TIMEOUT, our_channel_monitor_claim_script);
 
@@ -447,12 +447,12 @@ impl Channel {
                        their_to_self_delay: 0,
                        their_max_accepted_htlcs: 0,
 
-                       their_funding_pubkey: PublicKey::new(),
-                       their_revocation_basepoint: PublicKey::new(),
-                       their_payment_basepoint: PublicKey::new(),
-                       their_delayed_payment_basepoint: PublicKey::new(),
-                       their_htlc_basepoint: PublicKey::new(),
-                       their_cur_commitment_point: PublicKey::new(),
+                       their_funding_pubkey: None,
+                       their_revocation_basepoint: None,
+                       their_payment_basepoint: None,
+                       their_delayed_payment_basepoint: None,
+                       their_htlc_basepoint: None,
+                       their_cur_commitment_point: None,
 
                        their_prev_commitment_point: None,
                        their_node_id: their_node_id,
@@ -557,10 +557,10 @@ impl Channel {
                }
 
                let secp_ctx = Secp256k1::new();
-               let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).unwrap().serialize());
+               let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).serialize());
                let our_channel_monitor_claim_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script();
                let mut channel_monitor = ChannelMonitor::new(&chan_keys.revocation_base_key,
-                                                             &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key).unwrap(),
+                                                             &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key),
                                                              &chan_keys.htlc_base_key,
                                                              BREAKDOWN_TIMEOUT, our_channel_monitor_claim_script);
                channel_monitor.set_their_htlc_base_key(&msg.htlc_basepoint);
@@ -605,12 +605,12 @@ impl Channel {
                        their_to_self_delay: msg.to_self_delay,
                        their_max_accepted_htlcs: msg.max_accepted_htlcs,
 
-                       their_funding_pubkey: msg.funding_pubkey,
-                       their_revocation_basepoint: msg.revocation_basepoint,
-                       their_payment_basepoint: msg.payment_basepoint,
-                       their_delayed_payment_basepoint: msg.delayed_payment_basepoint,
-                       their_htlc_basepoint: msg.htlc_basepoint,
-                       their_cur_commitment_point: msg.first_per_commitment_point,
+                       their_funding_pubkey: Some(msg.funding_pubkey),
+                       their_revocation_basepoint: Some(msg.revocation_basepoint),
+                       their_payment_basepoint: Some(msg.payment_basepoint),
+                       their_delayed_payment_basepoint: Some(msg.delayed_payment_basepoint),
+                       their_htlc_basepoint: Some(msg.htlc_basepoint),
+                       their_cur_commitment_point: Some(msg.first_per_commitment_point),
 
                        their_prev_commitment_point: None,
                        their_node_id: their_node_id,
@@ -639,13 +639,13 @@ impl Channel {
 
        fn get_commitment_transaction_number_obscure_factor(&self) -> u64 {
                let mut sha = Sha256::new();
-               let our_payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap();
+               let our_payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key);
 
                if self.channel_outbound {
                        sha.input(&our_payment_basepoint.serialize());
-                       sha.input(&self.their_payment_basepoint.serialize());
+                       sha.input(&self.their_payment_basepoint.unwrap().serialize());
                } else {
-                       sha.input(&self.their_payment_basepoint.serialize());
+                       sha.input(&self.their_payment_basepoint.unwrap().serialize());
                        sha.input(&our_payment_basepoint.serialize());
                }
                let mut res = [0; 32];
@@ -679,8 +679,7 @@ impl Channel {
                let txins = {
                        let mut ins: Vec<TxIn> = Vec::new();
                        ins.push(TxIn {
-                               prev_hash: self.channel_monitor.get_funding_txo().unwrap().txid,
-                               prev_index: self.channel_monitor.get_funding_txo().unwrap().index as u32,
+                               previous_output: self.channel_monitor.get_funding_txo().unwrap().into_bitcoin_outpoint(),
                                script_sig: Script::new(),
                                sequence: ((0x80 as u32) << 8*3) | ((obscured_commitment_transaction_number >> 3*8) as u32),
                                witness: Vec::new(),
@@ -805,7 +804,7 @@ impl Channel {
 
        #[inline]
        fn get_closing_scriptpubkey(&self) -> Script {
-               let our_channel_close_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.channel_close_key).unwrap().serialize());
+               let our_channel_close_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.channel_close_key).serialize());
                Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_close_key_hash[..]).into_script()
        }
 
@@ -819,8 +818,7 @@ impl Channel {
                let txins = {
                        let mut ins: Vec<TxIn> = Vec::new();
                        ins.push(TxIn {
-                               prev_hash: self.channel_monitor.get_funding_txo().unwrap().txid,
-                               prev_index: self.channel_monitor.get_funding_txo().unwrap().index as u32,
+                               previous_output: self.channel_monitor.get_funding_txo().unwrap().into_bitcoin_outpoint(),
                                script_sig: Script::new(),
                                sequence: 0xffffffff,
                                witness: Vec::new(),
@@ -879,11 +877,11 @@ impl Channel {
        /// The result is a transaction which we can revoke ownership of (ie a "local" transaction)
        /// TODO Some magic rust shit to compile-time check this?
        fn build_local_transaction_keys(&self, commitment_number: u64) -> Result<TxCreationKeys, HandleError> {
-               let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(commitment_number)).unwrap();
-               let delayed_payment_base = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap();
-               let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap();
+               let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(commitment_number));
+               let delayed_payment_base = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key);
+               let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key);
 
-               Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &self.their_revocation_basepoint, &self.their_payment_basepoint, &self.their_htlc_basepoint)))
+               Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &self.their_revocation_basepoint.unwrap(), &self.their_payment_basepoint.unwrap(), &self.their_htlc_basepoint.unwrap())))
        }
 
        #[inline]
@@ -892,19 +890,19 @@ impl Channel {
        fn build_remote_transaction_keys(&self) -> Result<TxCreationKeys, HandleError> {
                //TODO: Ensure that the payment_key derived here ends up in the library users' wallet as we
                //may see payments to it!
-               let payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap();
-               let revocation_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap();
-               let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap();
+               let payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key);
+               let revocation_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key);
+               let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key);
 
-               Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &self.their_cur_commitment_point, &self.their_delayed_payment_basepoint, &self.their_htlc_basepoint, &revocation_basepoint, &payment_basepoint, &htlc_basepoint)))
+               Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &self.their_cur_commitment_point.unwrap(), &self.their_delayed_payment_basepoint.unwrap(), &self.their_htlc_basepoint.unwrap(), &revocation_basepoint, &payment_basepoint, &htlc_basepoint)))
        }
 
        /// Gets the redeemscript for the funding transaction output (ie the funding transaction output
        /// pays to get_funding_redeemscript().to_v0_p2wsh()).
        pub fn get_funding_redeemscript(&self) -> Script {
                let builder = Builder::new().push_opcode(opcodes::All::OP_PUSHNUM_2);
-               let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap().serialize();
-               let their_funding_key = self.their_funding_pubkey.serialize();
+               let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).serialize();
+               let their_funding_key = self.their_funding_pubkey.unwrap().serialize();
                if our_funding_key[..] < their_funding_key[..] {
                        builder.push_slice(&our_funding_key)
                                .push_slice(&their_funding_key)
@@ -925,12 +923,12 @@ impl Channel {
                let funding_redeemscript = self.get_funding_redeemscript();
 
                let sighash = Message::from_slice(&bip143::SighashComponents::new(&tx).sighash_all(&tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap();
-               let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key).unwrap();
+               let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key);
 
                tx.input[0].witness.push(Vec::new()); // First is the multisig dummy
 
-               let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap().serialize();
-               let their_funding_key = self.their_funding_pubkey.serialize();
+               let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).serialize();
+               let their_funding_key = self.their_funding_pubkey.unwrap().serialize();
                if our_funding_key[..] < their_funding_key[..] {
                        tx.input[0].witness.push(our_sig.serialize_der(&self.secp_ctx).to_vec());
                        tx.input[0].witness.push(their_sig.serialize_der(&self.secp_ctx).to_vec());
@@ -941,7 +939,7 @@ impl Channel {
                tx.input[0].witness[1].push(SigHashType::All as u8);
                tx.input[0].witness[2].push(SigHashType::All as u8);
 
-               tx.input[0].witness.push(funding_redeemscript.into_vec());
+               tx.input[0].witness.push(funding_redeemscript.into_bytes());
 
                our_sig
        }
@@ -962,8 +960,8 @@ impl Channel {
 
                let our_htlc_key = secp_derived_key!(chan_utils::derive_private_key(&self.secp_ctx, &keys.per_commitment_point, &self.local_keys.htlc_base_key));
                let sighash = Message::from_slice(&bip143::SighashComponents::new(&tx).sighash_all(&tx.input[0], &htlc_redeemscript, htlc.amount_msat / 1000)[..]).unwrap();
-               let is_local_tx = PublicKey::from_secret_key(&self.secp_ctx, &our_htlc_key).unwrap() == keys.a_htlc_key;
-               Ok((htlc_redeemscript, self.secp_ctx.sign(&sighash, &our_htlc_key).unwrap(), is_local_tx))
+               let is_local_tx = PublicKey::from_secret_key(&self.secp_ctx, &our_htlc_key) == keys.a_htlc_key;
+               Ok((htlc_redeemscript, self.secp_ctx.sign(&sighash, &our_htlc_key), is_local_tx))
        }
 
        /// Signs a transaction created by build_htlc_transaction. If the transaction is an
@@ -996,7 +994,7 @@ impl Channel {
                        tx.input[0].witness.push(preimage.unwrap().to_vec());
                }
 
-               tx.input[0].witness.push(htlc_redeemscript.into_vec());
+               tx.input[0].witness.push(htlc_redeemscript.into_bytes());
 
                Ok(our_sig)
        }
@@ -1230,12 +1228,12 @@ impl Channel {
                self.their_htlc_minimum_msat = msg.htlc_minimum_msat;
                self.their_to_self_delay = msg.to_self_delay;
                self.their_max_accepted_htlcs = msg.max_accepted_htlcs;
-               self.their_funding_pubkey = msg.funding_pubkey;
-               self.their_revocation_basepoint = msg.revocation_basepoint;
-               self.their_payment_basepoint = msg.payment_basepoint;
-               self.their_delayed_payment_basepoint = msg.delayed_payment_basepoint;
-               self.their_htlc_basepoint = msg.htlc_basepoint;
-               self.their_cur_commitment_point = msg.first_per_commitment_point;
+               self.their_funding_pubkey = Some(msg.funding_pubkey);
+               self.their_revocation_basepoint = Some(msg.revocation_basepoint);
+               self.their_payment_basepoint = Some(msg.payment_basepoint);
+               self.their_delayed_payment_basepoint = Some(msg.delayed_payment_basepoint);
+               self.their_htlc_basepoint = Some(msg.htlc_basepoint);
+               self.their_cur_commitment_point = Some(msg.first_per_commitment_point);
 
                let obscure_factor = self.get_commitment_transaction_number_obscure_factor();
                self.channel_monitor.set_commitment_obscure_factor(obscure_factor);
@@ -1258,10 +1256,10 @@ impl Channel {
                let local_sighash = Message::from_slice(&bip143::SighashComponents::new(&local_initial_commitment_tx).sighash_all(&local_initial_commitment_tx.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap();
 
                // They sign the "local" commitment transaction, allowing us to broadcast the tx if we wish.
-               secp_call!(self.secp_ctx.verify(&local_sighash, &sig, &self.their_funding_pubkey), "Invalid funding_created signature from peer");
+               secp_call!(self.secp_ctx.verify(&local_sighash, &sig, &self.their_funding_pubkey.unwrap()), "Invalid funding_created signature from peer");
 
                // We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish.
-               Ok((remote_initial_commitment_tx, self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key).unwrap()))
+               Ok((remote_initial_commitment_tx, self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key)))
        }
 
        pub fn funding_created(&mut self, msg: &msgs::FundingCreated) -> Result<(msgs::FundingSigned, ChannelMonitor), HandleError> {
@@ -1321,7 +1319,7 @@ impl Channel {
                let local_sighash = Message::from_slice(&bip143::SighashComponents::new(&local_initial_commitment_tx).sighash_all(&local_initial_commitment_tx.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap();
 
                // They sign the "local" commitment transaction, allowing us to broadcast the tx if we wish.
-               secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey), "Invalid funding_signed signature from peer");
+               secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey.unwrap()), "Invalid funding_signed signature from peer");
 
                self.sign_commitment_transaction(&mut local_initial_commitment_tx, &msg.signature);
                self.channel_monitor.provide_latest_local_commitment_tx_info(local_initial_commitment_tx.clone(), local_keys, self.feerate_per_kw, Vec::new());
@@ -1343,8 +1341,8 @@ impl Channel {
                        return Err(HandleError{err: "Peer sent a funding_locked at a strange time", action: None});
                }
 
-               self.their_prev_commitment_point = Some(self.their_cur_commitment_point);
-               self.their_cur_commitment_point = msg.next_per_commitment_point;
+               self.their_prev_commitment_point = self.their_cur_commitment_point;
+               self.their_cur_commitment_point = Some(msg.next_per_commitment_point);
                Ok(())
        }
 
@@ -1505,7 +1503,7 @@ impl Channel {
                let mut local_commitment_tx = self.build_commitment_transaction(self.cur_local_commitment_transaction_number, &local_keys, true, false);
                let local_commitment_txid = local_commitment_tx.0.txid();
                let local_sighash = Message::from_slice(&bip143::SighashComponents::new(&local_commitment_tx.0).sighash_all(&local_commitment_tx.0.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap();
-               secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey), "Invalid commitment tx signature from peer");
+               secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey.unwrap()), "Invalid commitment tx signature from peer");
 
                if msg.htlc_signatures.len() != local_commitment_tx.1.len() {
                        return Err(HandleError{err: "Got wrong number of HTLC signatures from remote", action: None});
@@ -1531,7 +1529,7 @@ impl Channel {
                        htlcs_and_sigs.push(((*htlc).clone(), msg.htlc_signatures[idx], htlc_sig));
                }
 
-               let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number - 1)).unwrap();
+               let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number - 1));
                let per_commitment_secret = chan_utils::build_commitment_secret(self.local_keys.commitment_seed, self.cur_local_commitment_transaction_number + 1);
 
                // Update state now that we've passed all the can-fail calls...
@@ -1655,7 +1653,7 @@ impl Channel {
                        return Err(HandleError{err: "Got revoke/ACK message when channel was not in an operational state", action: None});
                }
                if let Some(their_prev_commitment_point) = self.their_prev_commitment_point {
-                       if PublicKey::from_secret_key(&self.secp_ctx, &secp_call!(SecretKey::from_slice(&self.secp_ctx, &msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret")).unwrap() != their_prev_commitment_point {
+                       if PublicKey::from_secret_key(&self.secp_ctx, &secp_call!(SecretKey::from_slice(&self.secp_ctx, &msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret")) != their_prev_commitment_point {
                                return Err(HandleError{err: "Got a revoke commitment secret which didn't correspond to their current pubkey", action: None});
                        }
                }
@@ -1666,8 +1664,8 @@ impl Channel {
                // OK, we step the channel here and *then* if the new generation fails we can fail the
                // channel based on that, but stepping stuff here should be safe either way.
                self.channel_state &= !(ChannelState::AwaitingRemoteRevoke as u32);
-               self.their_prev_commitment_point = Some(self.their_cur_commitment_point);
-               self.their_cur_commitment_point = msg.next_per_commitment_point;
+               self.their_prev_commitment_point = self.their_cur_commitment_point;
+               self.their_cur_commitment_point = Some(msg.next_per_commitment_point);
                self.cur_remote_commitment_transaction_number -= 1;
 
                let mut to_forward_infos = Vec::new();
@@ -1782,7 +1780,7 @@ impl Channel {
                        let funding_redeemscript = self.get_funding_redeemscript();
                        let sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap();
 
-                       (Some(proposed_feerate), Some(total_fee_satoshis), Some(self.secp_ctx.sign(&sighash, &self.local_keys.funding_key).unwrap()))
+                       (Some(proposed_feerate), Some(total_fee_satoshis), Some(self.secp_ctx.sign(&sighash, &self.local_keys.funding_key)))
                } else { (None, None, None) };
 
                // From here on out, we may not fail!
@@ -1852,14 +1850,14 @@ impl Channel {
                }
                let mut sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap();
 
-               match self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey) {
+               match self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey.unwrap()) {
                        Ok(_) => {},
                        Err(_e) => {
                                // The remote end may have decided to revoke their output due to inconsistent dust
                                // limits, so check for that case by re-checking the signature here.
                                closing_tx = self.build_closing_transaction(msg.fee_satoshis, true).0;
                                sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap();
-                               secp_call!(self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey), "Invalid closing tx signature from peer");
+                               secp_call!(self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey.unwrap()), "Invalid closing tx signature from peer");
                        },
                };
 
@@ -1877,7 +1875,7 @@ impl Channel {
                                let closing_tx_max_weight = Self::get_closing_transaction_weight(&self.get_closing_scriptpubkey(), self.their_shutdown_scriptpubkey.as_ref().unwrap());
                                let (closing_tx, used_total_fee) = self.build_closing_transaction($new_feerate * closing_tx_max_weight / 1000, false);
                                sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap();
-                               let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key).unwrap();
+                               let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key);
                                self.last_sent_closing_fee = Some(($new_feerate, used_total_fee));
                                return Ok((Some(msgs::ClosingSigned {
                                        channel_id: self.channel_id,
@@ -2065,7 +2063,7 @@ impl Channel {
                                        //a protocol oversight, but I assume I'm just missing something.
                                        if need_commitment_update {
                                                let next_per_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
-                                               let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret).unwrap();
+                                               let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret);
                                                return Ok(Some(msgs::FundingLocked {
                                                        channel_id: self.channel_id,
                                                        next_per_commitment_point: next_per_commitment_point,
@@ -2140,12 +2138,12 @@ impl Channel {
                        feerate_per_kw: fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background) as u32,
                        to_self_delay: BREAKDOWN_TIMEOUT,
                        max_accepted_htlcs: OUR_MAX_HTLCS,
-                       funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(),
-                       revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(),
-                       payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(),
-                       delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(),
-                       htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(),
-                       first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret).unwrap(),
+                       funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key),
+                       revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key),
+                       payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key),
+                       delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key),
+                       htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key),
+                       first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret),
                        channel_flags: if self.announce_publicly {1} else {0},
                        shutdown_scriptpubkey: None,
                })
@@ -2173,12 +2171,12 @@ impl Channel {
                        minimum_depth: Channel::derive_minimum_depth(self.channel_value_satoshis*1000, self.value_to_self_msat),
                        to_self_delay: BREAKDOWN_TIMEOUT,
                        max_accepted_htlcs: OUR_MAX_HTLCS,
-                       funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(),
-                       revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(),
-                       payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(),
-                       delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(),
-                       htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(),
-                       first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret).unwrap(),
+                       funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key),
+                       revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key),
+                       payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key),
+                       delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key),
+                       htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key),
+                       first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret),
                        shutdown_scriptpubkey: None,
                })
        }
@@ -2191,7 +2189,7 @@ impl Channel {
                let remote_sighash = Message::from_slice(&bip143::SighashComponents::new(&remote_initial_commitment_tx).sighash_all(&remote_initial_commitment_tx.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap();
 
                // We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish.
-               Ok((self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key).unwrap(), remote_initial_commitment_tx))
+               Ok((self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key), remote_initial_commitment_tx))
        }
 
        /// Updates channel state with knowledge of the funding transaction's txid/index, and generates
@@ -2255,7 +2253,7 @@ impl Channel {
                }
 
                let were_node_one = our_node_id.serialize()[..] < self.their_node_id.serialize()[..];
-               let our_bitcoin_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap();
+               let our_bitcoin_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key);
 
                let msg = msgs::UnsignedChannelAnnouncement {
                        features: msgs::GlobalFeatures::new(),
@@ -2263,12 +2261,12 @@ impl Channel {
                        short_channel_id: self.get_short_channel_id().unwrap(),
                        node_id_1: if were_node_one { our_node_id } else { self.get_their_node_id() },
                        node_id_2: if were_node_one { self.get_their_node_id() } else { our_node_id },
-                       bitcoin_key_1: if were_node_one { our_bitcoin_key } else { self.their_funding_pubkey },
-                       bitcoin_key_2: if were_node_one { self.their_funding_pubkey } else { our_bitcoin_key },
+                       bitcoin_key_1: if were_node_one { our_bitcoin_key } else { self.their_funding_pubkey.unwrap() },
+                       bitcoin_key_2: if were_node_one { self.their_funding_pubkey.unwrap() } else { our_bitcoin_key },
                };
 
                let msghash = Message::from_slice(&Sha256dHash::from_data(&msg.encode()[..])[..]).unwrap();
-               let sig = self.secp_ctx.sign(&msghash, &self.local_keys.funding_key).unwrap();
+               let sig = self.secp_ctx.sign(&msghash, &self.local_keys.funding_key);
 
                Ok((msg, sig))
        }
@@ -2386,7 +2384,7 @@ impl Channel {
                let remote_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, true);
                let remote_commitment_txid = remote_commitment_tx.0.txid();
                let remote_sighash = Message::from_slice(&bip143::SighashComponents::new(&remote_commitment_tx.0).sighash_all(&remote_commitment_tx.0.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap();
-               let our_sig = self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key).unwrap();
+               let our_sig = self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key);
 
                let mut htlc_sigs = Vec::new();
 
@@ -2395,7 +2393,7 @@ impl Channel {
                        let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &remote_keys);
                        let htlc_sighash = Message::from_slice(&bip143::SighashComponents::new(&htlc_tx).sighash_all(&htlc_tx.input[0], &htlc_redeemscript, htlc.amount_msat / 1000)[..]).unwrap();
                        let our_htlc_key = secp_derived_key!(chan_utils::derive_private_key(&self.secp_ctx, &remote_keys.per_commitment_point, &self.local_keys.htlc_base_key));
-                       htlc_sigs.push(self.secp_ctx.sign(&htlc_sighash, &our_htlc_key).unwrap());
+                       htlc_sigs.push(self.secp_ctx.sign(&htlc_sighash, &our_htlc_key));
                }
 
                // Update state now that we've passed all the can-fail calls...
@@ -2558,38 +2556,39 @@ mod tests {
                        channel_monitor_claim_key: SecretKey::from_slice(&secp_ctx, &hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap(),
                        commitment_seed: [0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff],
                };
-               assert_eq!(PublicKey::from_secret_key(&secp_ctx, &chan_keys.funding_key).unwrap().serialize()[..],
+               assert_eq!(PublicKey::from_secret_key(&secp_ctx, &chan_keys.funding_key).serialize()[..],
                                hex::decode("023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb").unwrap()[..]);
 
-               let mut chan = Channel::new_outbound(&feeest, chan_keys, PublicKey::new(), 10000000, 100000, false, 42, Arc::clone(&logger)).unwrap(); // Nothing uses their network key in this test
+               let their_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &[42; 32]).unwrap());
+               let mut chan = Channel::new_outbound(&feeest, chan_keys, their_node_id, 10000000, 100000, false, 42, Arc::clone(&logger)).unwrap(); // Nothing uses their network key in this test
                chan.their_to_self_delay = 144;
                chan.our_dust_limit_satoshis = 546;
 
                let funding_info = OutPoint::new(Sha256dHash::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), 0);
                chan.channel_monitor.set_funding_info((funding_info, Script::new()));
 
-               chan.their_payment_basepoint = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()).unwrap();
-               assert_eq!(chan.their_payment_basepoint.serialize()[..],
+               chan.their_payment_basepoint = Some(PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()));
+               assert_eq!(chan.their_payment_basepoint.unwrap().serialize()[..],
                                hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
 
-               chan.their_funding_pubkey = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13").unwrap()[..]).unwrap()).unwrap();
-               assert_eq!(chan.their_funding_pubkey.serialize()[..],
+               chan.their_funding_pubkey = Some(PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13").unwrap()[..]).unwrap()));
+               assert_eq!(chan.their_funding_pubkey.unwrap().serialize()[..],
                                hex::decode("030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1").unwrap()[..]);
 
-               chan.their_htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()).unwrap();
-               assert_eq!(chan.their_htlc_basepoint.serialize()[..],
+               chan.their_htlc_basepoint = Some(PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()));
+               assert_eq!(chan.their_htlc_basepoint.unwrap().serialize()[..],
                                hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
 
-               chan.their_revocation_basepoint = PublicKey::from_slice(&secp_ctx, &hex::decode("02466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f27").unwrap()[..]).unwrap();
+               chan.their_revocation_basepoint = Some(PublicKey::from_slice(&secp_ctx, &hex::decode("02466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f27").unwrap()[..]).unwrap());
 
                // We can't just use build_local_transaction_keys here as the per_commitment_secret is not
                // derived from a commitment_seed, so instead we copy it here and call
                // build_commitment_transaction.
-               let delayed_payment_base = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.delayed_payment_base_key).unwrap();
+               let delayed_payment_base = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.delayed_payment_base_key);
                let per_commitment_secret = SecretKey::from_slice(&secp_ctx, &hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap();
-               let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret).unwrap();
-               let htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.htlc_base_key).unwrap();
-               let keys = TxCreationKeys::new(&secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &chan.their_revocation_basepoint, &chan.their_payment_basepoint, &chan.their_htlc_basepoint).unwrap();
+               let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret);
+               let htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.htlc_base_key);
+               let keys = TxCreationKeys::new(&secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &chan.their_revocation_basepoint.unwrap(), &chan.their_payment_basepoint.unwrap(), &chan.their_htlc_basepoint.unwrap()).unwrap();
 
                let mut unsigned_tx: (Transaction, Vec<HTLCOutputInCommitment>);
 
@@ -2598,7 +2597,7 @@ mod tests {
                                unsigned_tx = chan.build_commitment_transaction(0xffffffffffff - 42, &keys, true, false);
                                let their_signature = Signature::from_der(&secp_ctx, &hex::decode($their_sig_hex).unwrap()[..]).unwrap();
                                let sighash = Message::from_slice(&bip143::SighashComponents::new(&unsigned_tx.0).sighash_all(&unsigned_tx.0.input[0], &chan.get_funding_redeemscript(), chan.channel_value_satoshis)[..]).unwrap();
-                               secp_ctx.verify(&sighash, &their_signature, &chan.their_funding_pubkey).unwrap();
+                               secp_ctx.verify(&sighash, &their_signature, &chan.their_funding_pubkey.unwrap()).unwrap();
 
                                chan.sign_commitment_transaction(&mut unsigned_tx.0, &their_signature);
 
@@ -3086,10 +3085,10 @@ mod tests {
                let base_secret = SecretKey::from_slice(&secp_ctx, &hex::decode("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f").unwrap()[..]).unwrap();
                let per_commitment_secret = SecretKey::from_slice(&secp_ctx, &hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap();
 
-               let base_point = PublicKey::from_secret_key(&secp_ctx, &base_secret).unwrap();
+               let base_point = PublicKey::from_secret_key(&secp_ctx, &base_secret);
                assert_eq!(base_point.serialize()[..], hex::decode("036d6caac248af96f6afa7f904f550253a0f3ef3f5aa2fe6838a95b216691468e2").unwrap()[..]);
 
-               let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret).unwrap();
+               let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret);
                assert_eq!(per_commitment_point.serialize()[..], hex::decode("025f7117a78150fe2ef97db7cfc83bd57b2e2c0d0dd25eaf467a4a1c2a45ce1486").unwrap()[..]);
 
                assert_eq!(chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &base_point).unwrap().serialize()[..],