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67 lines
2.3 KiB
Rust
67 lines
2.3 KiB
Rust
use transcript::{Transcript, RecommendedTranscript};
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use ciphersuite::{group::GroupEncoding, Ciphersuite, Ristretto};
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use serde::{Serialize, Deserialize};
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use serai_primitives::NetworkId;
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#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, Serialize, Deserialize)]
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pub enum Service {
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Processor(NetworkId),
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Coordinator,
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}
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#[derive(Clone, PartialEq, Eq, Debug, Serialize, Deserialize)]
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pub struct QueuedMessage {
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pub from: Service,
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pub id: u64,
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pub msg: Vec<u8>,
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pub sig: Vec<u8>,
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}
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#[derive(Clone, PartialEq, Eq, Debug, Serialize, Deserialize)]
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pub struct Metadata {
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pub from: Service,
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pub to: Service,
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pub intent: Vec<u8>,
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}
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pub fn message_challenge(
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from: Service,
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from_key: <Ristretto as Ciphersuite>::G,
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to: Service,
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intent: &[u8],
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msg: &[u8],
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nonce: <Ristretto as Ciphersuite>::G,
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) -> <Ristretto as Ciphersuite>::F {
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let mut transcript = RecommendedTranscript::new(b"Serai Message Queue v0.1 Message");
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transcript.domain_separate(b"metadata");
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transcript.append_message(b"from", bincode::serialize(&from).unwrap());
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transcript.append_message(b"from_key", from_key.to_bytes());
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transcript.append_message(b"to", bincode::serialize(&to).unwrap());
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transcript.append_message(b"intent", intent);
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transcript.domain_separate(b"message");
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transcript.append_message(b"msg", msg);
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transcript.domain_separate(b"signature");
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transcript.append_message(b"nonce", nonce.to_bytes());
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<Ristretto as Ciphersuite>::hash_to_F(b"message_challenge", &transcript.challenge(b"challenge"))
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}
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pub fn ack_challenge(
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to: Service,
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to_key: <Ristretto as Ciphersuite>::G,
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from: Service,
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id: u64,
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nonce: <Ristretto as Ciphersuite>::G,
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) -> <Ristretto as Ciphersuite>::F {
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let mut transcript = RecommendedTranscript::new(b"Serai Message Queue v0.1 Ackowledgement");
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transcript.domain_separate(b"metadata");
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transcript.append_message(b"to", bincode::serialize(&to).unwrap());
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transcript.append_message(b"to_key", to_key.to_bytes());
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transcript.append_message(b"from", bincode::serialize(&from).unwrap());
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transcript.domain_separate(b"message");
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transcript.append_message(b"id", id.to_le_bytes());
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transcript.domain_separate(b"signature");
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transcript.append_message(b"nonce", nonce.to_bytes());
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<Ristretto as Ciphersuite>::hash_to_F(b"ack_challenge", &transcript.challenge(b"challenge"))
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}
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