From: Matt Corallo Date: Thu, 28 May 2020 20:09:47 +0000 (-0400) Subject: Drop requirement that ChannelKeys expose delayed_payment_basepoint X-Git-Tag: v0.0.12~60^2~1 X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=d77e40fa76d7f6f9ab5c5ae91d686ac8b8226b3f;p=rust-lightning Drop requirement that ChannelKeys expose delayed_payment_basepoint --- diff --git a/lightning/src/chain/keysinterface.rs b/lightning/src/chain/keysinterface.rs index 10687b74c..05e24d8c1 100644 --- a/lightning/src/chain/keysinterface.rs +++ b/lightning/src/chain/keysinterface.rs @@ -195,8 +195,6 @@ impl Readable for SpendableOutputDescriptor { // TODO: We should remove Clone by instead requesting a new ChannelKeys copy when we create // ChannelMonitors instead of expecting to clone the one out of the Channel into the monitors. pub trait ChannelKeys : Send+Clone { - /// Gets the local secret key used in HTLC-Success/HTLC-Timeout txn and to_local output - fn delayed_payment_base_key<'a>(&'a self) -> &'a SecretKey; /// Gets the local htlc secret key used in commitment tx htlc outputs fn htlc_base_key<'a>(&'a self) -> &'a SecretKey; /// Gets the commitment seed @@ -408,7 +406,6 @@ impl InMemoryChannelKeys { } impl ChannelKeys for InMemoryChannelKeys { - fn delayed_payment_base_key(&self) -> &SecretKey { &self.delayed_payment_base_key } fn htlc_base_key(&self) -> &SecretKey { &self.htlc_base_key } fn commitment_seed(&self) -> &[u8; 32] { &self.commitment_seed } fn pubkeys<'a>(&'a self) -> &'a ChannelPublicKeys { &self.local_channel_pubkeys } diff --git a/lightning/src/ln/channel.rs b/lightning/src/ln/channel.rs index f737e56a7..0c30a7e96 100644 --- a/lightning/src/ln/channel.rs +++ b/lightning/src/ln/channel.rs @@ -1094,11 +1094,11 @@ impl Channel { /// TODO Some magic rust shit to compile-time check this? fn build_local_transaction_keys(&self, commitment_number: u64) -> Result { 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 delayed_payment_base = &self.local_keys.pubkeys().delayed_payment_basepoint; let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.htlc_base_key()); let their_pubkeys = self.their_pubkeys.as_ref().unwrap(); - Ok(secp_check!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &their_pubkeys.revocation_basepoint, &their_pubkeys.htlc_basepoint), "Local tx keys generation got bogus keys")) + Ok(secp_check!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, delayed_payment_base, &htlc_basepoint, &their_pubkeys.revocation_basepoint, &their_pubkeys.htlc_basepoint), "Local tx keys generation got bogus keys")) } #[inline] @@ -3317,7 +3317,7 @@ impl Channel { funding_pubkey: local_keys.funding_pubkey, revocation_basepoint: local_keys.revocation_basepoint, payment_point: local_keys.payment_point, - delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.delayed_payment_base_key()), + delayed_payment_basepoint: local_keys.delayed_payment_basepoint, 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.config.announced_channel {1} else {0}, @@ -3351,7 +3351,7 @@ impl Channel { funding_pubkey: local_keys.funding_pubkey, revocation_basepoint: local_keys.revocation_basepoint, payment_point: local_keys.payment_point, - delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.delayed_payment_base_key()), + delayed_payment_basepoint: local_keys.delayed_payment_basepoint, 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: OptionalField::Present(if self.config.commit_upfront_shutdown_pubkey { self.get_closing_scriptpubkey() } else { Builder::new().into_script() }) @@ -4476,11 +4476,11 @@ mod tests { // 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()); + let delayed_payment_base = &chan.local_keys.pubkeys().delayed_payment_basepoint; let per_commitment_secret = SecretKey::from_slice(&hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).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, &their_pubkeys.revocation_basepoint, &their_pubkeys.htlc_basepoint).unwrap(); + let keys = TxCreationKeys::new(&secp_ctx, &per_commitment_point, delayed_payment_base, &htlc_basepoint, &their_pubkeys.revocation_basepoint, &their_pubkeys.htlc_basepoint).unwrap(); chan.their_pubkeys = Some(their_pubkeys); diff --git a/lightning/src/ln/functional_tests.rs b/lightning/src/ln/functional_tests.rs index 9513dc665..bd1b1d4f0 100644 --- a/lightning/src/ln/functional_tests.rs +++ b/lightning/src/ln/functional_tests.rs @@ -4321,7 +4321,7 @@ macro_rules! check_spendable_outputs { }; let secp_ctx = Secp256k1::new(); let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1); - if let Ok(delayed_payment_key) = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, keys.delayed_payment_base_key()) { + if let Ok(delayed_payment_key) = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &keys.inner.delayed_payment_base_key) { let delayed_payment_pubkey = PublicKey::from_secret_key(&secp_ctx, &delayed_payment_key); let witness_script = chan_utils::get_revokeable_redeemscript(remote_revocation_pubkey, *to_self_delay, &delayed_payment_pubkey); diff --git a/lightning/src/util/enforcing_trait_impls.rs b/lightning/src/util/enforcing_trait_impls.rs index 425b2124f..03df5af86 100644 --- a/lightning/src/util/enforcing_trait_impls.rs +++ b/lightning/src/util/enforcing_trait_impls.rs @@ -50,7 +50,6 @@ impl EnforcingChannelKeys { } impl ChannelKeys for EnforcingChannelKeys { - 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() } fn pubkeys<'a>(&'a self) -> &'a ChannelPublicKeys { self.inner.pubkeys() }