use crate::ln::channel::ANCHOR_OUTPUT_VALUE_SATOSHI;
use crate::ln::{chan_utils, PaymentPreimage};
use crate::ln::chan_utils::{HTLCOutputInCommitment, make_funding_redeemscript, ChannelPublicKeys, HolderCommitmentTransaction, ChannelTransactionParameters, CommitmentTransaction, ClosingTransaction};
+use crate::ln::channel_keys::{DelayedPaymentBasepoint, DelayedPaymentKey, HtlcKey, HtlcBasepoint, RevocationKey, RevocationBasepoint};
use crate::ln::msgs::{UnsignedChannelAnnouncement, UnsignedGossipMessage};
use crate::ln::script::ShutdownScript;
use crate::offers::invoice::UnsignedBolt12Invoice;
pub output: TxOut,
/// The revocation point specific to the commitment transaction which was broadcast. Used to
/// derive the witnessScript for this output.
- pub revocation_pubkey: PublicKey,
+ pub revocation_pubkey: RevocationKey,
/// Arbitrary identification information returned by a call to [`ChannelSigner::channel_keys_id`].
/// This may be useful in re-deriving keys used in the channel to spend the output.
pub channel_keys_id: [u8; 32],
/// To derive the delayed payment key which is used to sign this input, you must pass the
/// holder [`InMemorySigner::delayed_payment_base_key`] (i.e., the private key which corresponds to the
/// [`ChannelPublicKeys::delayed_payment_basepoint`] in [`ChannelSigner::pubkeys`]) and the provided
- /// [`DelayedPaymentOutputDescriptor::per_commitment_point`] to [`chan_utils::derive_private_key`]. The public key can be
- /// generated without the secret key using [`chan_utils::derive_public_key`] and only the
+ /// [`DelayedPaymentOutputDescriptor::per_commitment_point`] to [`chan_utils::derive_private_key`]. The DelayedPaymentKey can be
+ /// generated without the secret key using [`DelayedPaymentKey::from_basepoint`] and only the
/// [`ChannelPublicKeys::delayed_payment_basepoint`] which appears in [`ChannelSigner::pubkeys`].
///
/// To derive the [`DelayedPaymentOutputDescriptor::revocation_pubkey`] provided here (which is
/// [`ChannelPublicKeys::revocation_basepoint`] (which appears in the call to
/// [`ChannelSigner::provide_channel_parameters`]) and the provided
/// [`DelayedPaymentOutputDescriptor::per_commitment_point`] to
- /// [`chan_utils::derive_public_revocation_key`].
+ /// [`RevocationKey`].
///
/// The witness script which is hashed and included in the output `script_pubkey` may be
/// regenerated by passing the [`DelayedPaymentOutputDescriptor::revocation_pubkey`] (derived
let channel_params = self.channel_derivation_parameters.transaction_parameters.as_holder_broadcastable();
let broadcaster_keys = channel_params.broadcaster_pubkeys();
let counterparty_keys = channel_params.countersignatory_pubkeys();
- let broadcaster_delayed_key = chan_utils::derive_public_key(
- secp, &self.per_commitment_point, &broadcaster_keys.delayed_payment_basepoint
- );
- let counterparty_revocation_key = chan_utils::derive_public_revocation_key(
- secp, &self.per_commitment_point, &counterparty_keys.revocation_basepoint
+ let broadcaster_delayed_key = DelayedPaymentKey::from_basepoint(
+ secp, &broadcaster_keys.delayed_payment_basepoint, &self.per_commitment_point
);
+ let counterparty_revocation_key = &RevocationKey::from_basepoint(&secp, &counterparty_keys.revocation_basepoint, &self.per_commitment_point);
chan_utils::build_htlc_output(
self.feerate_per_kw, channel_params.contest_delay(), &self.htlc,
channel_params.channel_type_features(), &broadcaster_delayed_key, &counterparty_revocation_key
let channel_params = self.channel_derivation_parameters.transaction_parameters.as_holder_broadcastable();
let broadcaster_keys = channel_params.broadcaster_pubkeys();
let counterparty_keys = channel_params.countersignatory_pubkeys();
- let broadcaster_htlc_key = chan_utils::derive_public_key(
- secp, &self.per_commitment_point, &broadcaster_keys.htlc_basepoint
- );
- let counterparty_htlc_key = chan_utils::derive_public_key(
- secp, &self.per_commitment_point, &counterparty_keys.htlc_basepoint
+ let broadcaster_htlc_key = HtlcKey::from_basepoint(
+ secp, &broadcaster_keys.htlc_basepoint, &self.per_commitment_point
);
- let counterparty_revocation_key = chan_utils::derive_public_revocation_key(
- secp, &self.per_commitment_point, &counterparty_keys.revocation_basepoint
+ let counterparty_htlc_key = HtlcKey::from_basepoint(
+ secp, &counterparty_keys.htlc_basepoint, &self.per_commitment_point,
);
+ let counterparty_revocation_key = &RevocationKey::from_basepoint(&secp, &counterparty_keys.revocation_basepoint, &self.per_commitment_point);
chan_utils::get_htlc_redeemscript_with_explicit_keys(
&self.htlc, channel_params.channel_type_features(), &broadcaster_htlc_key, &counterparty_htlc_key,
&counterparty_revocation_key,
let from_secret = |s: &SecretKey| PublicKey::from_secret_key(secp_ctx, s);
ChannelPublicKeys {
funding_pubkey: from_secret(&funding_key),
- revocation_basepoint: from_secret(&revocation_base_key),
+ revocation_basepoint: RevocationBasepoint::from(from_secret(&revocation_base_key)),
payment_point: from_secret(&payment_key),
- delayed_payment_basepoint: from_secret(&delayed_payment_base_key),
- htlc_basepoint: from_secret(&htlc_base_key),
+ delayed_payment_basepoint: DelayedPaymentBasepoint::from(from_secret(&delayed_payment_base_key)),
+ htlc_basepoint: HtlcBasepoint::from(from_secret(&htlc_base_key)),
}
}
if spend_tx.input[input_idx].sequence.0 != descriptor.to_self_delay as u32 { return Err(()); }
let delayed_payment_key = chan_utils::derive_private_key(&secp_ctx, &descriptor.per_commitment_point, &self.delayed_payment_base_key);
- let delayed_payment_pubkey = PublicKey::from_secret_key(&secp_ctx, &delayed_payment_key);
+ let delayed_payment_pubkey = DelayedPaymentKey::from_secret_key(&secp_ctx, &delayed_payment_key);
let witness_script = chan_utils::get_revokeable_redeemscript(&descriptor.revocation_pubkey, descriptor.to_self_delay, &delayed_payment_pubkey);
let sighash = hash_to_message!(&sighash::SighashCache::new(spend_tx).segwit_signature_hash(input_idx, &witness_script, descriptor.output.value, EcdsaSighashType::All).unwrap()[..]);
let local_delayedsig = EcdsaSignature {
fn sign_justice_revoked_output(&self, justice_tx: &Transaction, input: usize, amount: u64, per_commitment_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> Result<Signature, ()> {
let revocation_key = chan_utils::derive_private_revocation_key(&secp_ctx, &per_commitment_key, &self.revocation_base_key);
let per_commitment_point = PublicKey::from_secret_key(secp_ctx, &per_commitment_key);
- let revocation_pubkey = chan_utils::derive_public_revocation_key(&secp_ctx, &per_commitment_point, &self.pubkeys().revocation_basepoint);
+ let revocation_pubkey = RevocationKey::from_basepoint(
+ &secp_ctx, &self.pubkeys().revocation_basepoint, &per_commitment_point,
+ );
let witness_script = {
let counterparty_keys = self.counterparty_pubkeys().expect(MISSING_PARAMS_ERR);
let holder_selected_contest_delay =
self.holder_selected_contest_delay().expect(MISSING_PARAMS_ERR);
- let counterparty_delayedpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &counterparty_keys.delayed_payment_basepoint);
+ let counterparty_delayedpubkey = DelayedPaymentKey::from_basepoint(&secp_ctx, &counterparty_keys.delayed_payment_basepoint, &per_commitment_point);
chan_utils::get_revokeable_redeemscript(&revocation_pubkey, holder_selected_contest_delay, &counterparty_delayedpubkey)
};
let mut sighash_parts = sighash::SighashCache::new(justice_tx);
fn sign_justice_revoked_htlc(&self, justice_tx: &Transaction, input: usize, amount: u64, per_commitment_key: &SecretKey, htlc: &HTLCOutputInCommitment, secp_ctx: &Secp256k1<secp256k1::All>) -> Result<Signature, ()> {
let revocation_key = chan_utils::derive_private_revocation_key(&secp_ctx, &per_commitment_key, &self.revocation_base_key);
let per_commitment_point = PublicKey::from_secret_key(secp_ctx, &per_commitment_key);
- let revocation_pubkey = chan_utils::derive_public_revocation_key(&secp_ctx, &per_commitment_point, &self.pubkeys().revocation_basepoint);
+ let revocation_pubkey = RevocationKey::from_basepoint(
+ &secp_ctx, &self.pubkeys().revocation_basepoint, &per_commitment_point,
+ );
let witness_script = {
let counterparty_keys = self.counterparty_pubkeys().expect(MISSING_PARAMS_ERR);
- let counterparty_htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &counterparty_keys.htlc_basepoint);
- let holder_htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &self.pubkeys().htlc_basepoint);
+ let counterparty_htlcpubkey = HtlcKey::from_basepoint(
+ &secp_ctx, &counterparty_keys.htlc_basepoint, &per_commitment_point,
+ );
+ let holder_htlcpubkey = HtlcKey::from_basepoint(
+ &secp_ctx, &self.pubkeys().htlc_basepoint, &per_commitment_point,
+ );
let chan_type = self.channel_type_features().expect(MISSING_PARAMS_ERR);
chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, chan_type, &counterparty_htlcpubkey, &holder_htlcpubkey, &revocation_pubkey)
};
fn sign_counterparty_htlc_transaction(&self, htlc_tx: &Transaction, input: usize, amount: u64, per_commitment_point: &PublicKey, htlc: &HTLCOutputInCommitment, secp_ctx: &Secp256k1<secp256k1::All>) -> Result<Signature, ()> {
let htlc_key = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &self.htlc_base_key);
- let revocation_pubkey = chan_utils::derive_public_revocation_key(&secp_ctx, &per_commitment_point, &self.pubkeys().revocation_basepoint);
+ let revocation_pubkey = RevocationKey::from_basepoint(
+ &secp_ctx, &self.pubkeys().revocation_basepoint, &per_commitment_point,
+ );
let counterparty_keys = self.counterparty_pubkeys().expect(MISSING_PARAMS_ERR);
- let counterparty_htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &counterparty_keys.htlc_basepoint);
- let htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &self.pubkeys().htlc_basepoint);
+ let counterparty_htlcpubkey = HtlcKey::from_basepoint(
+ &secp_ctx, &counterparty_keys.htlc_basepoint, &per_commitment_point,
+ );
+ let htlcpubkey = HtlcKey::from_basepoint(&secp_ctx, &self.pubkeys().htlc_basepoint, &per_commitment_point);
let chan_type = self.channel_type_features().expect(MISSING_PARAMS_ERR);
let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, chan_type, &counterparty_htlcpubkey, &htlcpubkey, &revocation_pubkey);
let mut sighash_parts = sighash::SighashCache::new(htlc_tx);
projects / rust-lightning / blobdiff