+ fn get_inbound_payment_key_material(&self) -> KeyMaterial {
+ self.inbound_payment_key.clone()
+ }
+
+ fn get_destination_script(&self) -> Script {
+ self.inner.get_destination_script()
+ }
+
+ fn get_shutdown_scriptpubkey(&self) -> ShutdownScript {
+ self.inner.get_shutdown_scriptpubkey()
+ }
+
+ fn get_channel_signer(&self, inbound: bool, channel_value_satoshis: u64) -> Self::Signer {
+ self.inner.get_channel_signer(inbound, channel_value_satoshis)
+ }
+
+ fn get_secure_random_bytes(&self) -> [u8; 32] {
+ self.inner.get_secure_random_bytes()
+ }
+
+ fn read_chan_signer(&self, reader: &[u8]) -> Result<Self::Signer, DecodeError> {
+ self.inner.read_chan_signer(reader)
+ }
+
+ fn sign_invoice(&self, hrp_bytes: &[u8], invoice_data: &[u5], recipient: Recipient) -> Result<RecoverableSignature, ()> {
+ let preimage = construct_invoice_preimage(&hrp_bytes, &invoice_data);
+ let secret = self.get_node_secret(recipient)?;
+ Ok(self.inner.secp_ctx.sign_recoverable(&hash_to_message!(&Sha256::hash(&preimage)), &secret))
+ }
+}
+
+impl PhantomKeysManager {
+ /// Constructs a `PhantomKeysManager` given a 32-byte seed and an additional `cross_node_seed`
+ /// that is shared across all nodes that intend to participate in [phantom node payments] together.
+ ///
+ /// See [`KeysManager::new`] for more information on `seed`, `starting_time_secs`, and
+ /// `starting_time_nanos`.
+ ///
+ /// `cross_node_seed` must be the same across all phantom payment-receiving nodes and also the
+ /// same across restarts, or else inbound payments may fail.
+ ///
+ /// [phantom node payments]: PhantomKeysManager
+ pub fn new(seed: &[u8; 32], starting_time_secs: u64, starting_time_nanos: u32, cross_node_seed: &[u8; 32]) -> Self {
+ let inner = KeysManager::new(seed, starting_time_secs, starting_time_nanos);
+ let (inbound_key, phantom_key) = hkdf_extract_expand_twice(b"LDK Inbound and Phantom Payment Key Expansion", cross_node_seed);
+ Self {
+ inner,
+ inbound_payment_key: KeyMaterial(inbound_key),
+ phantom_secret: SecretKey::from_slice(&phantom_key).unwrap(),
+ }
+ }
+
+ /// See [`KeysManager::spend_spendable_outputs`] for documentation on this method.
+ pub fn spend_spendable_outputs<C: Signing>(&self, descriptors: &[&SpendableOutputDescriptor], outputs: Vec<TxOut>, change_destination_script: Script, feerate_sat_per_1000_weight: u32, secp_ctx: &Secp256k1<C>) -> Result<Transaction, ()> {
+ self.inner.spend_spendable_outputs(descriptors, outputs, change_destination_script, feerate_sat_per_1000_weight, secp_ctx)
+ }
+
+ /// See [`KeysManager::derive_channel_keys`] for documentation on this method.
+ pub fn derive_channel_keys(&self, channel_value_satoshis: u64, params: &[u8; 32]) -> InMemorySigner {
+ self.inner.derive_channel_keys(channel_value_satoshis, params)