Use an empty key for Batch's SignId

coordinator/src/tributary/handle.rs

@@ -467,7 +467,7 @@ pub async fn handle_application_tx<
           .send(
             spec.set().network,
             CoordinatorMessage::Coordinator(coordinator::CoordinatorMessage::BatchPreprocesses {
-              id: SignId { key: todo!(), id: data.plan, attempt: data.attempt },
+              id: SignId { key: vec![], id: data.plan, attempt: data.attempt },
               preprocesses,
             }),
           )
@@ -489,9 +489,9 @@ pub async fn handle_application_tx<
           .send(
             spec.set().network,
             CoordinatorMessage::Coordinator(coordinator::CoordinatorMessage::BatchShares {
-              id: SignId { key: todo!(), id: data.plan, attempt: data.attempt },
+              id: SignId { key: vec![], id: data.plan, attempt: data.attempt },
               shares: shares
-                .drain()
+                .into_iter()
                 .map(|(validator, share)| (validator, share.try_into().unwrap()))
                 .collect(),
             }),

processor/src/substrate_signer.rs

@@ -6,7 +6,6 @@ use rand_core::OsRng;
 use scale::Encode;
 use transcript::{Transcript, RecommendedTranscript};
 
-use ciphersuite::group::GroupEncoding;
 use frost::{
   curve::Ristretto,
   ThresholdKeys,
@@ -179,7 +178,9 @@ impl<D: Db> SubstrateSigner<D> {
     // Update the attempt number
     self.attempt.insert(id, attempt);
 
-    let id = SignId { key: self.keys.group_key().to_bytes().to_vec(), id, attempt };
+    // Doesn't set key since there's only one key active at a time
+    // TODO: BatchSignId
+    let id = SignId { key: vec![], id, attempt };
     info!("signing batch {} #{}", hex::encode(id.id), id.attempt);
 
     // If we reboot mid-sign, the current design has us abort all signs and wait for latter

processor/src/tests/substrate_signer.rs

@@ -20,14 +20,13 @@ use crate::substrate_signer::{SubstrateSignerEvent, SubstrateSigner};
 
 #[tokio::test]
 async fn test_substrate_signer() {
-  let mut keys = key_gen::<_, Ristretto>(&mut OsRng);
+  let keys = key_gen::<_, Ristretto>(&mut OsRng);
 
   let participant_one = Participant::new(1).unwrap();
 
   let id: u32 = 5;
   let block = BlockHash([0xaa; 32]);
-  let mut actual_id =
-    SignId { key: keys[&participant_one].group_key().to_bytes().to_vec(), id: [0; 32], attempt: 0 };
+  let mut actual_id = SignId { key: vec![], id: [0; 32], attempt: 0 };
 
   let batch = Batch {
     network: NetworkId::Monero,
@@ -50,7 +49,7 @@ async fn test_substrate_signer() {
   let mut t = 0;
   for i in 1 ..= keys.len() {
     let i = Participant::new(u16::try_from(i).unwrap()).unwrap();
-    let keys = keys.remove(&i).unwrap();
+    let keys = keys.get(&i).unwrap().clone();
     t = keys.params().t();
 
     let mut signer = SubstrateSigner::<MemDb>::new(NetworkId::Monero, keys);
@@ -62,7 +61,6 @@ async fn test_substrate_signer() {
     signers.insert(i, signer);
     dbs.insert(i, db);
   }
-  drop(keys);
 
   let mut signing_set = vec![];
   while signing_set.len() < usize::from(t) {
@@ -144,7 +142,7 @@ async fn test_substrate_signer() {
       signers.get_mut(i).unwrap().events.pop_front().unwrap()
     {
       assert_eq!(signed_batch.batch, batch);
-      assert!(Public::from_raw(actual_id.key.clone().try_into().unwrap())
+      assert!(Public::from_raw(keys[&participant_one].group_key().to_bytes())
         .verify(&batch_message(&batch), &signed_batch.signature));
     } else {
       panic!("didn't get signed batch back");

tests/processor/src/tests/batch.rs

@@ -18,7 +18,6 @@ use crate::{*, tests::*};
 
 pub(crate) async fn recv_batch_preprocesses(
   coordinators: &mut [Coordinator],
-  key: [u8; 32],
   attempt: u32,
 ) -> (SignId, HashMap<Participant, Vec<u8>>) {
   let mut id = None;
@@ -37,7 +36,7 @@ pub(crate) async fn recv_batch_preprocesses(
         },
       ) => {
         if id.is_none() {
-          assert_eq!(&this_id.key, &key);
+          assert!(this_id.key.is_empty());
           assert_eq!(this_id.attempt, attempt);
           id = Some(this_id.clone());
           block = Some(this_block);
@@ -66,6 +65,7 @@ pub(crate) async fn recv_batch_preprocesses(
 
 pub(crate) async fn sign_batch(
   coordinators: &mut [Coordinator],
+  key: [u8; 32],
   id: SignId,
   preprocesses: HashMap<Participant, Vec<u8>>,
 ) -> SignedBatch {
@@ -125,7 +125,7 @@ pub(crate) async fn sign_batch(
           batch: this_batch,
         }) => {
           if batch.is_none() {
-            assert!(PublicKey::from_raw(id.key.clone().try_into().unwrap())
+            assert!(PublicKey::from_raw(key)
               .verify(&batch_message(&this_batch.batch), &this_batch.signature));
 
             batch = Some(this_batch.clone());
@@ -232,8 +232,7 @@ fn batch_test() {
         tokio::time::sleep(Duration::from_secs(10)).await;
 
         // Make sure the proceessors picked it up by checking they're trying to sign a batch for it
-        let (mut id, mut preprocesses) =
-          recv_batch_preprocesses(&mut coordinators, key_pair.0 .0, 0).await;
+        let (mut id, mut preprocesses) = recv_batch_preprocesses(&mut coordinators, 0).await;
         // Trigger a random amount of re-attempts
         for attempt in 1 ..= u32::try_from(OsRng.next_u64() % 4).unwrap() {
           // TODO: Double check how the processor handles this ID field
@@ -246,12 +245,11 @@ fn batch_test() {
               })
               .await;
           }
-          (id, preprocesses) =
-            recv_batch_preprocesses(&mut coordinators, key_pair.0 .0, attempt).await;
+          (id, preprocesses) = recv_batch_preprocesses(&mut coordinators, attempt).await;
         }
 
         // Continue with signing the batch
-        let batch = sign_batch(&mut coordinators, id, preprocesses).await;
+        let batch = sign_batch(&mut coordinators, key_pair.0 .0, id, preprocesses).await;
 
         // Check it
         assert_eq!(batch.batch.network, network);

tests/processor/src/tests/send.rs

@@ -187,10 +187,10 @@ fn send_test() {
       tokio::time::sleep(Duration::from_secs(10)).await;
 
       // Make sure the proceessors picked it up by checking they're trying to sign a batch for it
-      let (id, preprocesses) = recv_batch_preprocesses(&mut coordinators, key_pair.0 .0, 0).await;
+      let (id, preprocesses) = recv_batch_preprocesses(&mut coordinators, 0).await;
 
       // Continue with signing the batch
-      let batch = sign_batch(&mut coordinators, id, preprocesses).await;
+      let batch = sign_batch(&mut coordinators, key_pair.0 .0, id, preprocesses).await;
 
       // Check it
       assert_eq!(batch.batch.network, network);