X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Futil%2Fenforcing_trait_impls.rs;h=0d20f7ad4224258161d6bcd79d137baab0a66e02;hb=31b4d89cde2b184a7551db9afdba581ab7984821;hp=ee66d5f3ab81d54d77456d5026d7fe98479a567b;hpb=8fae0c0d0586c34852f3da666b3ee49a7f4eca8e;p=rust-lightning diff --git a/lightning/src/util/enforcing_trait_impls.rs b/lightning/src/util/enforcing_trait_impls.rs index ee66d5f3..0d20f7ad 100644 --- a/lightning/src/util/enforcing_trait_impls.rs +++ b/lightning/src/util/enforcing_trait_impls.rs @@ -1,4 +1,13 @@ -use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys, LocalCommitmentTransaction}; +// This file is Copyright its original authors, visible in version control +// history. +// +// This file is licensed under the Apache License, Version 2.0 or the MIT license +// , at your option. +// You may not use this file except in accordance with one or both of these +// licenses. + +use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys, LocalCommitmentTransaction, PreCalculatedTxCreationKeys}; use ln::{chan_utils, msgs}; use chain::keysinterface::{ChannelKeys, InMemoryChannelKeys}; @@ -35,7 +44,7 @@ impl EnforcingChannelKeys { impl EnforcingChannelKeys { fn check_keys(&self, secp_ctx: &Secp256k1, keys: &TxCreationKeys) { - let remote_points = self.inner.remote_channel_pubkeys.as_ref().unwrap(); + let remote_points = self.inner.remote_pubkeys(); let keys_expected = TxCreationKeys::new(secp_ctx, &keys.per_commitment_point, @@ -48,13 +57,21 @@ impl EnforcingChannelKeys { } impl ChannelKeys for EnforcingChannelKeys { - fn commitment_seed(&self) -> &[u8; 32] { self.inner.commitment_seed() } + fn get_per_commitment_point(&self, idx: u64, secp_ctx: &Secp256k1) -> PublicKey { + self.inner.get_per_commitment_point(idx, secp_ctx) + } + + fn release_commitment_secret(&self, idx: u64) -> [u8; 32] { + // TODO: enforce the ChannelKeys contract - error here if we already signed this commitment + self.inner.release_commitment_secret(idx) + } + fn pubkeys(&self) -> &ChannelPublicKeys { self.inner.pubkeys() } fn key_derivation_params(&self) -> (u64, u64) { self.inner.key_derivation_params() } - fn sign_remote_commitment(&self, feerate_per_kw: u32, commitment_tx: &Transaction, keys: &TxCreationKeys, htlcs: &[&HTLCOutputInCommitment], to_self_delay: u16, secp_ctx: &Secp256k1) -> Result<(Signature, Vec), ()> { + fn sign_remote_commitment(&self, feerate_per_kw: u32, commitment_tx: &Transaction, pre_keys: &PreCalculatedTxCreationKeys, htlcs: &[&HTLCOutputInCommitment], secp_ctx: &Secp256k1) -> Result<(Signature, Vec), ()> { if commitment_tx.input.len() != 1 { panic!("lightning commitment transactions have a single input"); } - self.check_keys(secp_ctx, keys); + self.check_keys(secp_ctx, pre_keys.trust_key_derivation()); let obscured_commitment_transaction_number = (commitment_tx.lock_time & 0xffffff) as u64 | ((commitment_tx.input[0].sequence as u64 & 0xffffff) << 3*8); { @@ -67,20 +84,23 @@ impl ChannelKeys for EnforcingChannelKeys { commitment_data.1 = cmp::max(commitment_number, commitment_data.1) } - Ok(self.inner.sign_remote_commitment(feerate_per_kw, commitment_tx, keys, htlcs, to_self_delay, secp_ctx).unwrap()) + Ok(self.inner.sign_remote_commitment(feerate_per_kw, commitment_tx, pre_keys, htlcs, secp_ctx).unwrap()) } fn sign_local_commitment(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1) -> Result { + // TODO: enforce the ChannelKeys contract - error if this commitment was already revoked + // TODO: need the commitment number Ok(self.inner.sign_local_commitment(local_commitment_tx, secp_ctx).unwrap()) } - #[cfg(test)] + #[cfg(any(test,feature = "unsafe_revoked_tx_signing"))] fn unsafe_sign_local_commitment(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1) -> Result { Ok(self.inner.unsafe_sign_local_commitment(local_commitment_tx, secp_ctx).unwrap()) } - fn sign_local_commitment_htlc_transactions(&self, local_commitment_tx: &LocalCommitmentTransaction, local_csv: u16, secp_ctx: &Secp256k1) -> Result>, ()> { + fn sign_local_commitment_htlc_transactions(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1) -> Result>, ()> { let commitment_txid = local_commitment_tx.txid(); + let local_csv = self.inner.remote_to_self_delay(); for this_htlc in local_commitment_tx.per_htlc.iter() { if this_htlc.0.transaction_output_index.is_some() { @@ -93,11 +113,11 @@ impl ChannelKeys for EnforcingChannelKeys { } } - Ok(self.inner.sign_local_commitment_htlc_transactions(local_commitment_tx, local_csv, secp_ctx).unwrap()) + Ok(self.inner.sign_local_commitment_htlc_transactions(local_commitment_tx, secp_ctx).unwrap()) } - fn sign_justice_transaction(&self, justice_tx: &Transaction, input: usize, amount: u64, per_commitment_key: &SecretKey, htlc: &Option, on_remote_tx_csv: u16, secp_ctx: &Secp256k1) -> Result { - Ok(self.inner.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc, on_remote_tx_csv, secp_ctx).unwrap()) + fn sign_justice_transaction(&self, justice_tx: &Transaction, input: usize, amount: u64, per_commitment_key: &SecretKey, htlc: &Option, secp_ctx: &Secp256k1) -> Result { + Ok(self.inner.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc, secp_ctx).unwrap()) } fn sign_remote_htlc_transaction(&self, htlc_tx: &Transaction, input: usize, amount: u64, per_commitment_point: &PublicKey, htlc: &HTLCOutputInCommitment, secp_ctx: &Secp256k1) -> Result { @@ -112,8 +132,8 @@ impl ChannelKeys for EnforcingChannelKeys { self.inner.sign_channel_announcement(msg, secp_ctx) } - fn set_remote_channel_pubkeys(&mut self, channel_pubkeys: &ChannelPublicKeys) { - self.inner.set_remote_channel_pubkeys(channel_pubkeys) + fn on_accept(&mut self, channel_pubkeys: &ChannelPublicKeys, remote_to_self_delay: u16, local_to_self_delay: u16) { + self.inner.on_accept(channel_pubkeys, remote_to_self_delay, local_to_self_delay) } }