Bitcoin Key Gen

processor/bitcoin/src/key_gen.rs

@@ -0,0 +1,26 @@
+use ciphersuite::{group::GroupEncoding, Ciphersuite, Secp256k1};
+use frost::ThresholdKeys;
+
+use key_gen::KeyGenParams;
+
+use crate::scan::scanner;
+
+pub(crate) struct KeyGen;
+impl KeyGenParams for KeyGen {
+  const ID: &'static str = "Bitcoin";
+
+  type ExternalNetworkCurve = Secp256k1;
+
+  fn tweak_keys(keys: &mut ThresholdKeys<Self::ExternalNetworkCurve>) {
+    *keys = bitcoin_serai::wallet::tweak_keys(keys);
+    // Also create a scanner to assert these keys, and all expected paths, are usable
+    scanner(keys.group_key());
+  }
+
+  fn encode_key(key: <Self::ExternalNetworkCurve as Ciphersuite>::G) -> Vec<u8> {
+    let key = key.to_bytes();
+    let key: &[u8] = key.as_ref();
+    // Skip the parity encoding as we know this key is even
+    key[1 ..].to_vec()
+  }
+}

processor/bitcoin/src/main.rs

@@ -13,6 +13,7 @@ pub(crate) use primitives::*;
 mod scan;
 
 // App-logic trait satisfactions
+mod key_gen;
 mod rpc;
 mod scheduler;
 
@@ -224,12 +225,6 @@ impl Network for Bitcoin {
   // aggregation TX
   const COST_TO_AGGREGATE: u64 = 800;
 
-  fn tweak_keys(keys: &mut ThresholdKeys<Self::Curve>) {
-    *keys = tweak_keys(keys);
-    // Also create a scanner to assert these keys, and all expected paths, are usable
-    scanner(keys.group_key());
-  }
-
   #[cfg(test)]
   async fn get_block_number(&self, id: &[u8; 32]) -> usize {
     self.rpc.get_block_number(id).await.unwrap()