X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Futil%2Fenforcing_trait_impls.rs;h=3e1ffd04446021a4e00d5e0a5fe55318128a6d2e;hb=7159d1546ae92281a7e0533813a6e7558f16354a;hp=26c3a07775fa37670d585507499d2d57deaa9aa3;hpb=f1c7fd2ab9b4df5f4b7cad855501d1178b2eb1c6;p=rust-lightning

diff --git a/lightning/src/util/enforcing_trait_impls.rs b/lightning/src/util/enforcing_trait_impls.rs
index 26c3a077..3e1ffd04 100644
--- a/lightning/src/util/enforcing_trait_impls.rs
+++ b/lightning/src/util/enforcing_trait_impls.rs
@@ -1,11 +1,12 @@
-use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys};
-use ln::msgs;
+use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys, LocalCommitmentTransaction};
+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::util::bip143;
 
 use secp256k1;
 use secp256k1::key::{SecretKey, PublicKey};
@@ -78,6 +79,32 @@ 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: &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: &LocalCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+		Ok(self.inner.unsafe_sign_local_commitment(local_commitment_tx, secp_ctx).unwrap())
+	}
+
+	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, ()> {
 		Ok(self.inner.sign_closing_transaction(closing_tx, secp_ctx).unwrap())
 	}