use ln::chan_utils::{HTLCOutputInCommitment, ChannelPublicKeys, HolderCommitmentTransaction, CommitmentTransaction, ChannelTransactionParameters, TrustedCommitmentTransaction};
use ln::{chan_utils, msgs};
-use chain::keysinterface::{ChannelKeys, InMemoryChannelKeys};
+use chain::keysinterface::{Sign, InMemorySigner};
use std::cmp;
use std::sync::{Mutex, Arc};
/// Initial value for revoked commitment downward counter
pub const INITIAL_REVOKED_COMMITMENT_NUMBER: u64 = 1 << 48;
-/// An implementation of ChannelKeys that enforces some policy checks. The current checks
+/// An implementation of Sign that enforces some policy checks. The current checks
/// are an incomplete set. They include:
///
/// - When signing, the holder transaction has not been revoked
/// Eventually we will probably want to expose a variant of this which would essentially
/// be what you'd want to run on a hardware wallet.
#[derive(Clone)]
-pub struct EnforcingChannelKeys {
- pub inner: InMemoryChannelKeys,
+pub struct EnforcingSigner {
+ pub inner: InMemorySigner,
/// The last counterparty commitment number we signed, backwards counting
pub last_commitment_number: Arc<Mutex<Option<u64>>>,
/// The last holder commitment number we revoked, backwards counting
pub disable_revocation_policy_check: bool,
}
-impl EnforcingChannelKeys {
- /// Construct an EnforcingChannelKeys
- pub fn new(inner: InMemoryChannelKeys) -> Self {
+impl EnforcingSigner {
+ /// Construct an EnforcingSigner
+ pub fn new(inner: InMemorySigner) -> Self {
Self {
inner,
last_commitment_number: Arc::new(Mutex::new(None)),
}
}
- /// Construct an EnforcingChannelKeys with externally managed storage
+ /// Construct an EnforcingSigner with externally managed storage
///
/// Since there are multiple copies of this struct for each channel, some coordination is needed
/// so that all copies are aware of revocations. A pointer to this state is provided here, usually
/// by an implementation of KeysInterface.
- pub fn new_with_revoked(inner: InMemoryChannelKeys, revoked_commitment: Arc<Mutex<u64>>, disable_revocation_policy_check: bool) -> Self {
+ pub fn new_with_revoked(inner: InMemorySigner, revoked_commitment: Arc<Mutex<u64>>, disable_revocation_policy_check: bool) -> Self {
Self {
inner,
last_commitment_number: Arc::new(Mutex::new(None)),
}
}
-impl ChannelKeys for EnforcingChannelKeys {
+impl Sign for EnforcingSigner {
fn get_per_commitment_point<T: secp256k1::Signing + secp256k1::Verification>(&self, idx: u64, secp_ctx: &Secp256k1<T>) -> PublicKey {
self.inner.get_per_commitment_point(idx, secp_ctx)
}
}
-impl Writeable for EnforcingChannelKeys {
+impl Writeable for EnforcingSigner {
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), Error> {
self.inner.write(writer)?;
let last = *self.last_commitment_number.lock().unwrap();
}
}
-impl Readable for EnforcingChannelKeys {
+impl Readable for EnforcingSigner {
fn read<R: ::std::io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
let inner = Readable::read(reader)?;
let last_commitment_number = Readable::read(reader)?;
- Ok(EnforcingChannelKeys {
+ Ok(EnforcingSigner {
inner,
last_commitment_number: Arc::new(Mutex::new(last_commitment_number)),
revoked_commitment: Arc::new(Mutex::new(INITIAL_REVOKED_COMMITMENT_NUMBER)),
}
}
-impl EnforcingChannelKeys {
+impl EnforcingSigner {
fn verify_counterparty_commitment_tx<'a, T: secp256k1::Signing + secp256k1::Verification>(&self, commitment_tx: &'a CommitmentTransaction, secp_ctx: &Secp256k1<T>) -> TrustedCommitmentTransaction<'a> {
commitment_tx.verify(&self.inner.get_channel_parameters().as_counterparty_broadcastable(),
self.inner.counterparty_pubkeys(), self.inner.pubkeys(), secp_ctx)