+impl EntropySource for KeyProvider {
+ fn get_secure_random_bytes(&self) -> [u8; 32] {
+ let ctr = self.counter.fetch_add(1, Ordering::Relaxed);
+ [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ (ctr >> 8*7) as u8, (ctr >> 8*6) as u8, (ctr >> 8*5) as u8, (ctr >> 8*4) as u8, (ctr >> 8*3) as u8, (ctr >> 8*2) as u8, (ctr >> 8*1) as u8, 14, (ctr >> 8*0) as u8]
+ }
+}
+
+impl NodeSigner for KeyProvider {
+ fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()> {
+ let node_secret = match recipient {
+ Recipient::Node => Ok(&self.node_secret),
+ Recipient::PhantomNode => Err(())
+ }?;
+ Ok(PublicKey::from_secret_key(&Secp256k1::signing_only(), node_secret))
+ }
+
+ fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&Scalar>) -> Result<SharedSecret, ()> {
+ let mut node_secret = match recipient {
+ Recipient::Node => Ok(self.node_secret.clone()),
+ Recipient::PhantomNode => Err(())
+ }?;
+ if let Some(tweak) = tweak {
+ node_secret = node_secret.mul_tweak(tweak).map_err(|_| ())?;
+ }
+ Ok(SharedSecret::new(other_key, &node_secret))