Create a dedicated crate for the DKG

Cargo.toml

@@ -4,10 +4,13 @@ members = [
 
   "crypto/dalek-ff-group",
   "crypto/ed448",
+  "crypto/ciphersuite",
 
   "crypto/multiexp",
 
+  "crypto/schnorr",
   "crypto/dleq",
+  "crypto/dkg",
   "crypto/frost",
 
   "coins/ethereum",

coins/ethereum/Cargo.toml

@@ -24,7 +24,7 @@ sha3 = "0.10"
 
 group = "0.12"
 k256 = { version = "0.11", features = ["arithmetic", "keccak256", "ecdsa"] }
-frost = { package = "modular-frost", path = "../../crypto/frost", features = ["secp256k1"] }
+frost = { package = "modular-frost", path = "../../crypto/frost", features = ["secp256k1", "tests"] }
 
 eyre = "0.6"
 

coins/monero/src/ringct/clsag/multisig.rs

@@ -23,8 +23,8 @@ use dalek_ff_group as dfg;
 use dleq::DLEqProof;
 use frost::{
   curve::Ed25519,
-  FrostError, FrostView,
-  algorithm::{AddendumSerialize, Algorithm},
+  FrostError, ThresholdView,
+  algorithm::{WriteAddendum, Algorithm},
 };
 
 use crate::ringct::{
@@ -80,7 +80,7 @@ pub struct ClsagAddendum {
   dleq: DLEqProof<dfg::EdwardsPoint>,
 }
 
-impl AddendumSerialize for ClsagAddendum {
+impl WriteAddendum for ClsagAddendum {
   fn write<W: Write>(&self, writer: &mut W) -> io::Result<()> {
     writer.write_all(self.key_image.compress().to_bytes().as_ref())?;
     self.dleq.serialize(writer)
@@ -154,7 +154,7 @@ impl Algorithm<Ed25519> for ClsagMultisig {
   fn preprocess_addendum<R: RngCore + CryptoRng>(
     &mut self,
     rng: &mut R,
-    view: &FrostView<Ed25519>,
+    view: &ThresholdView<Ed25519>,
   ) -> ClsagAddendum {
     ClsagAddendum {
       key_image: dfg::EdwardsPoint(self.H * view.secret_share().0),
@@ -188,7 +188,7 @@ impl Algorithm<Ed25519> for ClsagMultisig {
 
   fn process_addendum(
     &mut self,
-    view: &FrostView<Ed25519>,
+    view: &ThresholdView<Ed25519>,
     l: u16,
     addendum: ClsagAddendum,
   ) -> Result<(), FrostError> {
@@ -223,7 +223,7 @@ impl Algorithm<Ed25519> for ClsagMultisig {
 
   fn sign_share(
     &mut self,
-    view: &FrostView<Ed25519>,
+    view: &ThresholdView<Ed25519>,
     nonce_sums: &[Vec<dfg::EdwardsPoint>],
     nonces: &[dfg::Scalar],
     msg: &[u8],

coins/monero/src/wallet/send/multisig.rs

@@ -12,7 +12,7 @@ use curve25519_dalek::{traits::Identity, scalar::Scalar, edwards::EdwardsPoint};
 use transcript::{Transcript, RecommendedTranscript};
 use frost::{
   curve::Ed25519,
-  FrostError, FrostKeys,
+  FrostError, ThresholdKeys,
   sign::{
     Writable, Preprocess, SignatureShare, PreprocessMachine, SignMachine, SignatureMachine,
     AlgorithmMachine, AlgorithmSignMachine, AlgorithmSignatureMachine,
@@ -68,7 +68,7 @@ impl SignableTransaction {
   pub async fn multisig(
     self,
     rpc: &Rpc,
-    keys: FrostKeys<Ed25519>,
+    keys: ThresholdKeys<Ed25519>,
     mut transcript: RecommendedTranscript,
     height: usize,
     mut included: Vec<u16>,

crypto/ciphersuite/Cargo.toml

@@ -0,0 +1,49 @@
+[package]
+name = "ciphersuite"
+version = "0.1.1"
+description = "Ciphersuites built around ff/group"
+license = "MIT"
+repository = "https://github.com/serai-dex/serai/tree/develop/crypto/ciphersuite"
+authors = ["Luke Parker <[email protected]>"]
+keywords = ["ciphersuite", "ff", "group"]
+edition = "2021"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[dependencies]
+rand_core = "0.6"
+
+zeroize = { version = "1.5", features = ["zeroize_derive"] }
+subtle = "2"
+
+digest = "0.10"
+sha2 = { version = "0.10", optional = true }
+sha3 = { version = "0.10", optional = true }
+
+ff = { version = "0.12", features = ["bits"] }
+group = "0.12"
+
+dalek-ff-group = { path = "../dalek-ff-group", version = "^0.1.2", optional = true }
+
+elliptic-curve = { version = "0.12", features = ["hash2curve"], optional = true }
+p256 = { version = "0.11", features = ["arithmetic", "bits", "hash2curve"], optional = true }
+k256 = { version = "0.11", features = ["arithmetic", "bits", "hash2curve"], optional = true }
+
+minimal-ed448 = { path = "../ed448", version = "0.1", optional = true }
+
+[features]
+std = []
+
+dalek = ["sha2", "dalek-ff-group"]
+ed25519 = ["dalek"]
+ristretto = ["dalek"]
+
+kp256 = ["sha2", "elliptic-curve"]
+p256 = ["kp256", "dep:p256"]
+secp256k1 = ["kp256", "k256"]
+
+ed448 = ["sha3", "minimal-ed448"]
+
+default = ["std"]

crypto/ciphersuite/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021-2022 Luke Parker
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

crypto/ciphersuite/README.md

@@ -0,0 +1,3 @@
+# Ciphersuite
+
+Ciphersuites for elliptic curves premised on ff/group.