add support for redpallas

coordinator/Cargo.toml

@@ -8,9 +8,14 @@ edition = "2021"
 [dependencies]
 eyre = "0.6.8"
 frost-ed25519 = { version = "0.6.0", features = ["serde"] }
+reddsa = { git = "https://github.com/ZcashFoundation/reddsa.git", rev = "8534e283acf0015cc2450e2a6b49685a3bb3145d", features = ["frost"] }
 hex = { version = "0.4", features = ["serde"] }
 thiserror = "1.0"
 rand = "0.8"
 serde_json = "1.0"
 itertools = "0.11.0"
 exitcode = "1.1.2"
+
+[features]
+redpallas = []
+default = []

coordinator/src/cli.rs

@@ -4,6 +4,9 @@ use crate::step_1::step_1;
 use crate::step_2::step_2;
 use crate::step_3::step_3;
 
+#[cfg(feature = "redpallas")]
+use crate::step_3::request_randomizer;
+
 pub fn cli(
     reader: &mut impl BufRead,
     logger: &mut impl Write,
@@ -19,9 +22,19 @@ pub fn cli(
 
     let signing_package = step_2(reader, logger, participants_config.participants.clone())?;
 
+    #[cfg(feature = "redpallas")]
+    let randomizer = request_randomizer(reader, logger)?;
+
     writeln!(logger, "=== STEP 3: BUILD GROUP SIGNATURE ===\n")?;
 
-    step_3(reader, logger, participants_config, signing_package);
+    step_3(
+        reader,
+        logger,
+        participants_config,
+        signing_package,
+        #[cfg(feature = "redpallas")]
+        randomizer,
+    );
 
     writeln!(logger, "=== END ===")?;
 

coordinator/src/step_1.rs

@@ -1,4 +1,7 @@
+#[cfg(not(feature = "redpallas"))]
 use frost_ed25519 as frost;
+#[cfg(feature = "redpallas")]
+use reddsa::frost::redpallas as frost;
 
 use frost::{keys::PublicKeyPackage, Error, Identifier};
 

coordinator/src/step_2.rs

@@ -1,6 +1,9 @@
-use frost::{round1::SigningCommitments, Identifier, SigningPackage};
-
+#[cfg(not(feature = "redpallas"))]
 use frost_ed25519 as frost;
+#[cfg(feature = "redpallas")]
+use reddsa::frost::redpallas as frost;
+
+use frost::{round1::SigningCommitments, Identifier, SigningPackage};
 
 use std::{
     collections::BTreeMap,