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serai-processor-bin

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Moves the coordinator loop out of serai-bitcoin-processor, completing it.

Fixes a potential race condition in the message-queue regarding multiple
sockets sending messages at once.
This commit is contained in:
Luke Parker
2024-09-11 18:56:23 -04:00
parent fcd5fb85df
commit b6811f9015
22 changed files with 705 additions and 594 deletions
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31
processor/key-gen/src/lib.rs
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@@ -34,27 +34,29 @@ pub trait KeyGenParams {
const ID: &'static str;
/// The curve used for the external network.
type ExternalNetworkCurve: EvrfCurve<
type ExternalNetworkCiphersuite: EvrfCurve<
EmbeddedCurve: Ciphersuite<
G: ec_divisors::DivisorCurve<FieldElement = <Self::ExternalNetworkCurve as Ciphersuite>::F>,
G: ec_divisors::DivisorCurve<
FieldElement = <Self::ExternalNetworkCiphersuite as Ciphersuite>::F,
>,
>,
>;
/// Tweaks keys as necessary/beneficial.
fn tweak_keys(keys: &mut ThresholdKeys<Self::ExternalNetworkCurve>);
fn tweak_keys(keys: &mut ThresholdKeys<Self::ExternalNetworkCiphersuite>);
/// Encode keys as optimal.
///
/// A default implementation is provided which calls the traditional `to_bytes`.
fn encode_key(key: <Self::ExternalNetworkCurve as Ciphersuite>::G) -> Vec<u8> {
fn encode_key(key: <Self::ExternalNetworkCiphersuite as Ciphersuite>::G) -> Vec<u8> {
key.to_bytes().as_ref().to_vec()
}
/// Decode keys from their optimal encoding.
///
/// A default implementation is provided which calls the traditional `from_bytes`.
fn decode_key(mut key: &[u8]) -> Option<<Self::ExternalNetworkCurve as Ciphersuite>::G> {
let res = <Self::ExternalNetworkCurve as Ciphersuite>::read_G(&mut key).ok()?;
fn decode_key(mut key: &[u8]) -> Option<<Self::ExternalNetworkCiphersuite as Ciphersuite>::G> {
let res = <Self::ExternalNetworkCiphersuite as Ciphersuite>::read_G(&mut key).ok()?;
if !key.is_empty() {
None?;
}
@@ -143,7 +145,7 @@ pub struct KeyGen<P: KeyGenParams> {
substrate_evrf_private_key:
Zeroizing<<<Ristretto as EvrfCurve>::EmbeddedCurve as Ciphersuite>::F>,
network_evrf_private_key:
Zeroizing<<<P::ExternalNetworkCurve as EvrfCurve>::EmbeddedCurve as Ciphersuite>::F>,
Zeroizing<<<P::ExternalNetworkCiphersuite as EvrfCurve>::EmbeddedCurve as Ciphersuite>::F>,
}
impl<P: KeyGenParams> KeyGen<P> {
@@ -154,7 +156,7 @@ impl<P: KeyGenParams> KeyGen<P> {
<<Ristretto as EvrfCurve>::EmbeddedCurve as Ciphersuite>::F,
>,
network_evrf_private_key: Zeroizing<
<<P::ExternalNetworkCurve as EvrfCurve>::EmbeddedCurve as Ciphersuite>::F,
<<P::ExternalNetworkCiphersuite as EvrfCurve>::EmbeddedCurve as Ciphersuite>::F,
>,
) -> KeyGen<P> {
KeyGen { substrate_evrf_private_key, network_evrf_private_key }
@@ -165,7 +167,8 @@ impl<P: KeyGenParams> KeyGen<P> {
pub fn key_shares(
getter: &impl Get,
session: Session,
) -> Option<(Vec<ThresholdKeys<Ristretto>>, Vec<ThresholdKeys<P::ExternalNetworkCurve>>)> {
) -> Option<(Vec<ThresholdKeys<Ristretto>>, Vec<ThresholdKeys<P::ExternalNetworkCiphersuite>>)>
{
// This is safe, despite not having a txn, since it's a static value
// It doesn't change over time/in relation to other operations
// It is solely set or unset
@@ -198,7 +201,7 @@ impl<P: KeyGenParams> KeyGen<P> {
let network_evrf_public_keys =
evrf_public_keys.into_iter().map(|(_, key)| key).collect::<Vec<_>>();
let (network_evrf_public_keys, additional_faulty) =
coerce_keys::<P::ExternalNetworkCurve>(&network_evrf_public_keys);
coerce_keys::<P::ExternalNetworkCiphersuite>(&network_evrf_public_keys);
faulty.extend(additional_faulty);
// Participate for both Substrate and the network
@@ -228,7 +231,7 @@ impl<P: KeyGenParams> KeyGen<P> {
&self.substrate_evrf_private_key,
&mut participation,
);
participate::<P::ExternalNetworkCurve>(
participate::<P::ExternalNetworkCiphersuite>(
context::<P>(session, NETWORK_KEY_CONTEXT),
threshold,
&network_evrf_public_keys,
@@ -283,7 +286,7 @@ impl<P: KeyGenParams> KeyGen<P> {
};
let len_at_network_participation_start_pos = participation.len();
let Ok(network_participation) =
Participation::<P::ExternalNetworkCurve>::read(&mut participation, n)
Participation::<P::ExternalNetworkCiphersuite>::read(&mut participation, n)
else {
return blame;
};
@@ -317,7 +320,7 @@ impl<P: KeyGenParams> KeyGen<P> {
}
}
match EvrfDkg::<P::ExternalNetworkCurve>::verify(
match EvrfDkg::<P::ExternalNetworkCiphersuite>::verify(
&mut OsRng,
generators(),
context::<P>(session, NETWORK_KEY_CONTEXT),
@@ -490,7 +493,7 @@ impl<P: KeyGenParams> KeyGen<P> {
Err(blames) => return blames,
};
let network_dkg = match verify_dkg::<P, P::ExternalNetworkCurve>(
let network_dkg = match verify_dkg::<P, P::ExternalNetworkCiphersuite>(
txn,
session,
false,