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Define a signature scheme trait

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This commit is contained in:
Luke Parker
2022-10-16 09:42:33 -04:00
parent a0bc9dc3e5
commit 85962c00a9
2 changed files with 66 additions and 24 deletions
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36
substrate/tendermint/src/ext.rs
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@@ -12,18 +12,16 @@ pub struct BlockNumber(pub u32);
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Round(pub u16);
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum BlockError {
// Invalid behavior entirely
Fatal,
// Potentially valid behavior dependent on unsynchronized state
Temporal,
}
pub trait SignatureScheme {
type ValidatorId: ValidatorId;
type Signature: Clone + Copy + PartialEq;
type AggregateSignature: Clone + PartialEq;
pub trait Block: Send + Sync + Clone + PartialEq + Debug {
type Id: Send + Sync + Copy + Clone + PartialEq + Debug;
fn id(&self) -> Self::Id;
fn sign(&self, msg: &[u8]) -> Self::Signature;
#[must_use]
fn verify(&self, validator: Self::ValidatorId, msg: &[u8], sig: Self::Signature) -> bool;
// Intended to be a BLS signature, a Schnorr signature half-aggregation, or a Vec<Signature>.
fn aggregate(signatures: &[Self::Signature]) -> Self::AggregateSignature;
}
pub trait Weights: Send + Sync {
@@ -42,15 +40,31 @@ pub trait Weights: Send + Sync {
fn proposer(&self, number: BlockNumber, round: Round) -> Self::ValidatorId;
}
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum BlockError {
// Invalid behavior entirely
Fatal,
// Potentially valid behavior dependent on unsynchronized state
Temporal,
}
pub trait Block: Send + Sync + Clone + PartialEq + Debug {
type Id: Send + Sync + Copy + Clone + PartialEq + Debug;
fn id(&self) -> Self::Id;
}
#[async_trait::async_trait]
pub trait Network: Send + Sync {
type ValidatorId: ValidatorId;
type SignatureScheme: SignatureScheme;
type Weights: Weights<ValidatorId = Self::ValidatorId>;
type Block: Block;
// Block time in seconds
const BLOCK_TIME: u32;
fn signature_scheme(&self) -> Arc<Self::SignatureScheme>;
fn weights(&self) -> Arc<Self::Weights>;
async fn broadcast(&mut self, msg: Message<Self::ValidatorId, Self::Block>);