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Use proper messages for ValidatorSets/InInstructions pallet

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Provides a DST, and associated metadata as beneficial.

Also utilizes MuSig's context to session-bind. Since set_keys_messages also
binds to set, this is semi-redundant, yet that's appreciated.
This commit is contained in:
Luke Parker
2023-05-13 04:20:13 -04:00
parent 663b5f4b50
commit 47f8766da6
17 changed files with 102 additions and 70 deletions
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23
substrate/validator-sets/pallet/src/lib.rs
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@@ -69,23 +69,14 @@ pub mod pallet {
#[pallet::genesis_build]
impl<T: Config> GenesisBuild<T> for GenesisConfig<T> {
fn build(&self) {
use ciphersuite::{group::GroupEncoding, Ciphersuite, Ristretto};
let hash_set = self.participants.iter().map(|key| key.0).collect::<hashbrown::HashSet<[u8; 32]>>();
if hash_set.len() != self.participants.len()
{
let hash_set =
self.participants.iter().map(|key| key.0).collect::<hashbrown::HashSet<[u8; 32]>>();
if hash_set.len() != self.participants.len() {
panic!("participants contained duplicates");
}
let mut participants = Vec::new();
let mut keys = Vec::new();
for participant in self.participants.clone() {
keys.push(
<Ristretto as Ciphersuite>::read_G::<&[u8]>(
&mut participant.0.as_ref(),
)
.expect("invalid participant"),
);
participants.push((participant, self.bond));
}
let participants = BoundedVec::try_from(participants).unwrap();
@@ -99,7 +90,7 @@ pub mod pallet {
Some(ValidatorSetData { bond: self.bond, network, participants: participants.clone() }),
);
MuSigKeys::<T>::set(set, Some(Public(dkg::musig::musig_key::<Ristretto>(&keys).unwrap().to_bytes())));
MuSigKeys::<T>::set(set, Some(musig_key(set, &self.participants)));
Pallet::<T>::deposit_event(Event::NewSet { set })
}
}
@@ -128,7 +119,7 @@ pub mod pallet {
let Some(musig_key) = MuSigKeys::<T>::get(set) else {
Err(Error::NonExistentValidatorSet)?
};
if !musig_key.verify(&key_pair.encode(), signature) {
if !musig_key.verify(&set_keys_message(&set, key_pair), signature) {
Err(Error::BadSignature)?;
}
@@ -179,7 +170,9 @@ pub mod pallet {
let set = ValidatorSet { session, network: *network };
match Self::verify_signature(set, key_pair, signature) {
Err(Error::AlreadyGeneratedKeys) => Err(InvalidTransaction::Stale)?,
Err(Error::NonExistentValidatorSet) | Err(Error::BadSignature) => Err(InvalidTransaction::BadProof)?,
Err(Error::NonExistentValidatorSet) | Err(Error::BadSignature) => {
Err(InvalidTransaction::BadProof)?
}
Err(Error::__Ignore(_, _)) => unreachable!(),
Ok(()) => (),
}