Rename payment_basepoint/key to simply payment_point/key.

[rust-lightning] / lightning / src / util / enforcing_trait_impls.rs

diff --git a/lightning/src/util/enforcing_trait_impls.rs b/lightning/src/util/enforcing_trait_impls.rs
index c48424f9da4be18ce1cdaa02ccac038ffe51d3b1..d8db20f0f9a6008d9b23e8f85072a85ed48609fa 100644 (file)
--- a/lightning/src/util/enforcing_trait_impls.rs
+++ b/lightning/src/util/enforcing_trait_impls.rs
@@ -1,17 +1,16 @@
 use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys, LocalCommitmentTransaction};
-use ln::channelmanager::PaymentPreimage;
-use ln::msgs;
+use ln::{chan_utils, msgs};
 use chain::keysinterface::{ChannelKeys, InMemoryChannelKeys};
 
 use std::cmp;
 use std::sync::{Mutex, Arc};
 
 use bitcoin::blockdata::transaction::Transaction;
-use bitcoin::blockdata::script::Script;
+use bitcoin::util::bip143;
 
-use secp256k1;
-use secp256k1::key::{SecretKey, PublicKey};
-use secp256k1::{Secp256k1, Signature};
+use bitcoin::secp256k1;
+use bitcoin::secp256k1::key::{SecretKey, PublicKey};
+use bitcoin::secp256k1::{Secp256k1, Signature};
 use util::ser::{Writeable, Writer, Readable};
 use std::io::Error;
 use ln::msgs::DecodeError;
@@ -37,7 +36,6 @@ impl EnforcingChannelKeys {
        fn check_keys<T: secp256k1::Signing + secp256k1::Verification>(&self, secp_ctx: &Secp256k1<T>,
                                                                       keys: &TxCreationKeys) {
                let revocation_base = PublicKey::from_secret_key(secp_ctx, &self.inner.revocation_base_key());
-               let payment_base = PublicKey::from_secret_key(secp_ctx, &self.inner.payment_base_key());
                let htlc_base = PublicKey::from_secret_key(secp_ctx, &self.inner.htlc_base_key());
 
                let remote_points = self.inner.remote_channel_pubkeys.as_ref().unwrap();
@@ -47,7 +45,6 @@ impl EnforcingChannelKeys {
                                                        &remote_points.delayed_payment_basepoint,
                                                        &remote_points.htlc_basepoint,
                                                        &revocation_base,
-                                                       &payment_base,
                                                        &htlc_base).unwrap();
                if keys != &keys_expected { panic!("derived different per-tx keys") }
        }
@@ -56,7 +53,7 @@ impl EnforcingChannelKeys {
 impl ChannelKeys for EnforcingChannelKeys {
        fn funding_key(&self) -> &SecretKey { self.inner.funding_key() }
        fn revocation_base_key(&self) -> &SecretKey { self.inner.revocation_base_key() }
-       fn payment_base_key(&self) -> &SecretKey { self.inner.payment_base_key() }
+       fn payment_key(&self) -> &SecretKey { self.inner.payment_key() }
        fn delayed_payment_base_key(&self) -> &SecretKey { self.inner.delayed_payment_base_key() }
        fn htlc_base_key(&self) -> &SecretKey { self.inner.htlc_base_key() }
        fn commitment_seed(&self) -> &[u8; 32] { self.inner.commitment_seed() }
@@ -80,17 +77,30 @@ impl ChannelKeys for EnforcingChannelKeys {
                Ok(self.inner.sign_remote_commitment(feerate_per_kw, commitment_tx, keys, htlcs, to_self_delay, secp_ctx).unwrap())
        }
 
-       fn sign_local_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &mut LocalCommitmentTransaction, funding_redeemscript: &Script, channel_value_satoshis: u64, secp_ctx: &Secp256k1<T>) {
-               self.inner.sign_local_commitment(local_commitment_tx, funding_redeemscript, channel_value_satoshis, secp_ctx)
+       fn sign_local_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+               Ok(self.inner.sign_local_commitment(local_commitment_tx, secp_ctx).unwrap())
        }
 
        #[cfg(test)]
-       fn unsafe_sign_local_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &mut LocalCommitmentTransaction, funding_redeemscript: &Script, channel_value_satoshis: u64, secp_ctx: &Secp256k1<T>) {
-               self.inner.unsafe_sign_local_commitment(local_commitment_tx, funding_redeemscript, channel_value_satoshis, secp_ctx);
+       fn unsafe_sign_local_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+               Ok(self.inner.unsafe_sign_local_commitment(local_commitment_tx, secp_ctx).unwrap())
        }
 
-       fn sign_htlc_transaction<T: secp256k1::Signing>(&self, local_commitment_tx: &mut LocalCommitmentTransaction, htlc_index: u32, preimage: Option<PaymentPreimage>, local_csv: u16, secp_ctx: &Secp256k1<T>) {
-               self.inner.sign_htlc_transaction(local_commitment_tx, htlc_index, preimage, local_csv, secp_ctx);
+       fn sign_local_commitment_htlc_transactions<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &LocalCommitmentTransaction, local_csv: u16, secp_ctx: &Secp256k1<T>) -> Result<Vec<Option<Signature>>, ()> {
+               let commitment_txid = local_commitment_tx.txid();
+
+               for this_htlc in local_commitment_tx.per_htlc.iter() {
+                       if this_htlc.0.transaction_output_index.is_some() {
+                               let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, local_commitment_tx.feerate_per_kw, local_csv, &this_htlc.0, &local_commitment_tx.local_keys.a_delayed_payment_key, &local_commitment_tx.local_keys.revocation_key);
+
+                               let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&this_htlc.0, &local_commitment_tx.local_keys);
+
+                               let sighash = hash_to_message!(&bip143::SighashComponents::new(&htlc_tx).sighash_all(&htlc_tx.input[0], &htlc_redeemscript, this_htlc.0.amount_msat / 1000)[..]);
+                               secp_ctx.verify(&sighash, this_htlc.1.as_ref().unwrap(), &local_commitment_tx.local_keys.b_htlc_key).unwrap();
+                       }
+               }
+
+               Ok(self.inner.sign_local_commitment_htlc_transactions(local_commitment_tx, local_csv, secp_ctx).unwrap())
        }
 
        fn sign_closing_transaction<T: secp256k1::Signing>(&self, closing_tx: &Transaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {