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3.3.3 (cont) Add a dedicated Participant type

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This commit is contained in:
Luke Parker
2023-02-23 06:50:45 -05:00
parent 87dea5e455
commit 2d56d24d9c
18 changed files with 308 additions and 237 deletions
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29
crypto/frost/src/tests/vectors.rs
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@@ -13,7 +13,7 @@ use dkg::tests::key_gen;
use crate::{
curve::Curve,
ThresholdCore, ThresholdKeys, FrostError,
Participant, ThresholdCore, ThresholdKeys, FrostError,
algorithm::{Schnorr, Hram},
sign::{
Nonce, GeneratorCommitments, NonceCommitments, Commitments, Writable, Preprocess, SignMachine,
@@ -30,7 +30,7 @@ pub struct Vectors {
pub shares: Vec<String>,
pub msg: String,
pub included: Vec<u16>,
pub included: Vec<Participant>,
pub nonces: Vec<[String; 2]>,
pub sig_shares: Vec<String>,
@@ -58,8 +58,11 @@ impl From<serde_json::Value> for Vectors {
included: to_str(&value["round_one_outputs"]["participant_list"])
.split(',')
.map(u16::from_str)
.collect::<Result<_, _>>()
.unwrap(),
.collect::<Result<Vec<_>, _>>()
.unwrap()
.iter()
.map(|i| Participant::new(*i).unwrap())
.collect(),
nonces: value["round_one_outputs"]["participants"]
.as_object()
.unwrap()
@@ -80,7 +83,7 @@ impl From<serde_json::Value> for Vectors {
}
// Load these vectors into ThresholdKeys using a custom serialization it'll deserialize
fn vectors_to_multisig_keys<C: Curve>(vectors: &Vectors) -> HashMap<u16, ThresholdKeys<C>> {
fn vectors_to_multisig_keys<C: Curve>(vectors: &Vectors) -> HashMap<Participant, ThresholdKeys<C>> {
let shares = vectors
.shares
.iter()
@@ -92,11 +95,11 @@ fn vectors_to_multisig_keys<C: Curve>(vectors: &Vectors) -> HashMap<u16, Thresho
for i in 1 ..= u16::try_from(shares.len()).unwrap() {
// Manually re-implement the serialization for ThresholdCore to import this data
let mut serialized = vec![];
serialized.extend(u32::try_from(C::ID.len()).unwrap().to_be_bytes());
serialized.extend(u32::try_from(C::ID.len()).unwrap().to_le_bytes());
serialized.extend(C::ID);
serialized.extend(vectors.threshold.to_be_bytes());
serialized.extend(u16::try_from(shares.len()).unwrap().to_be_bytes());
serialized.extend(i.to_be_bytes());
serialized.extend(vectors.threshold.to_le_bytes());
serialized.extend(u16::try_from(shares.len()).unwrap().to_le_bytes());
serialized.extend(i.to_le_bytes());
serialized.extend(shares[usize::from(i) - 1].to_repr().as_ref());
for share in &verification_shares {
serialized.extend(share.to_bytes().as_ref());
@@ -105,10 +108,11 @@ fn vectors_to_multisig_keys<C: Curve>(vectors: &Vectors) -> HashMap<u16, Thresho
let these_keys = ThresholdCore::<C>::deserialize::<&[u8]>(&mut serialized.as_ref()).unwrap();
assert_eq!(these_keys.params().t(), vectors.threshold);
assert_eq!(usize::from(these_keys.params().n()), shares.len());
assert_eq!(these_keys.params().i(), i);
let participant = Participant::new(i).unwrap();
assert_eq!(these_keys.params().i(), participant);
assert_eq!(these_keys.secret_share().deref(), &shares[usize::from(i - 1)]);
assert_eq!(hex::encode(these_keys.group_key().to_bytes().as_ref()), vectors.group_key);
keys.insert(i, ThresholdKeys::new(these_keys));
keys.insert(participant, ThresholdKeys::new(these_keys));
}
keys
@@ -124,7 +128,8 @@ pub fn test_with_vectors<R: RngCore + CryptoRng, C: Curve, H: Hram<C>>(
let machines = algorithm_machines(&mut *rng, Schnorr::<C, H>::new(), &keys);
const MSG: &[u8] = b"Hello, World!";
let sig = sign(&mut *rng, Schnorr::<C, H>::new(), keys.clone(), machines, MSG);
assert!(sig.verify(keys[&1].group_key(), H::hram(&sig.R, &keys[&1].group_key(), MSG)));
let group_key = keys[&Participant::new(1).unwrap()].group_key();
assert!(sig.verify(group_key, H::hram(&sig.R, &group_key, MSG)));
}
// Test blame on an invalid Schnorr signature share