Implement interactive signing

src/auxinfo/participant.rs

@@ -113,8 +113,6 @@ mod storage {
 pub struct AuxInfoParticipant {
     /// The current session identifier
     sid: Identifier,
-    /// The current protocol input
-    input: (),
     /// A unique identifier for this participant
     id: ParticipantIdentifier,
     /// A list of all other participant identifiers participating in the
@@ -142,7 +140,6 @@ impl ProtocolParticipant for AuxInfoParticipant {
     ) -> Result<Self> {
         Ok(Self {
             sid,
-            input,
             id,
             other_participant_ids: other_participant_ids.clone(),
             local_storage: Default::default(),
@@ -176,10 +173,6 @@ impl ProtocolParticipant for AuxInfoParticipant {
         self.sid
     }
 
-    fn input(&self) -> &Self::Input {
-        &self.input
-    }
-
     #[cfg_attr(feature = "flame_it", flame("auxinfo"))]
     #[instrument(skip_all, err(Debug))]
     fn process_message<R: RngCore + CryptoRng>(

src/broadcast/participant.rs

@@ -113,9 +113,6 @@ impl ProtocolParticipant for BroadcastParticipant {
         self.sid
     }
 
-    fn input(&self) -> &Self::Input {
-        &()
-    }
     fn ready_type() -> MessageType {
         // I'm not totally confident since broadcast takes a different shape than the
         // other protocols, but this is definitely the first message in the

src/keygen/participant.rs

@@ -198,10 +198,6 @@ impl ProtocolParticipant for KeygenParticipant {
         self.sid
     }
 
-    fn input(&self) -> &Self::Input {
-        &()
-    }
-
     #[cfg_attr(feature = "flame_it", flame("keygen"))]
     #[instrument(skip_all)]
     fn process_message<R: RngCore + CryptoRng>(

src/message_queue.rs

@@ -21,7 +21,7 @@ use crate::{
 use std::collections::HashMap;
 
 /// A type for storing a queue of [`Message`]s by [`MessageType`].
-#[derive(Clone, Default)]
+#[derive(Debug, Clone, Default)]
 pub(crate) struct MessageQueue(HashMap<MessageType, Vec<Message>>);
 
 impl MessageQueue {

src/participant.rs

@@ -245,9 +245,6 @@ pub trait ProtocolParticipant {
 
     /// The session identifier for the current session
     fn sid(&self) -> Identifier;
-
-    /// The input of the current session
-    fn input(&self) -> &Self::Input;
 }
 
 pub(crate) trait InnerProtocolParticipant: ProtocolParticipant {

src/presign/input.rs

@@ -76,6 +76,10 @@ impl Input {
         })
     }
 
+    pub(crate) fn public_key_shares(&self) -> &[KeySharePublic] {
+        self.keygen_output.public_key_shares()
+    }
+
     /// Get the set of participants that contributed to the input.
     ///
     /// By construction, this must be the same for the auxinfo and key share

src/presign/participant.rs

@@ -280,10 +280,6 @@ impl ProtocolParticipant for PresignParticipant {
         self.sid
     }
 
-    fn input(&self) -> &Self::Input {
-        &self.input
-    }
-
     /// Process the incoming message.
     ///
     /// This method produces a [`PresignRecord`] once presigning is complete.
@@ -364,6 +360,10 @@ impl Broadcast for PresignParticipant {
 }
 
 impl PresignParticipant {
+    fn input(&self) -> &Input {
+        &self.input
+    }
+
     /// Handle "Ready" messages from the protocol participants.
     ///
     /// Once "Ready" messages have been received from all participants, this