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Add ack signatures

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Also modifies message signatures to be binding to from, not just from's key.
This commit is contained in:
Luke Parker
2023-07-17 17:40:34 -04:00
parent 6ccac2d0ab
commit 344ac9cbfc
4 changed files with 54 additions and 16 deletions
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27
message-queue/src/messages.rs
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@@ -27,20 +27,39 @@ pub struct Metadata {
}
pub fn message_challenge(
from: <Ristretto as Ciphersuite>::G,
from: Service,
from_key: <Ristretto as Ciphersuite>::G,
to: Service,
intent: &[u8],
msg: &[u8],
nonce: <Ristretto as Ciphersuite>::G,
) -> <Ristretto as Ciphersuite>::F {
let mut transcript = RecommendedTranscript::new(b"Serai Message Queue v0.1");
let mut transcript = RecommendedTranscript::new(b"Serai Message Queue v0.1 Message");
transcript.domain_separate(b"metadata");
transcript.append_message(b"from", from.to_bytes());
transcript.append_message(b"from", bincode::serialize(&from).unwrap());
transcript.append_message(b"from_key", from_key.to_bytes());
transcript.append_message(b"to", bincode::serialize(&to).unwrap());
transcript.append_message(b"intent", intent);
transcript.domain_separate(b"message");
transcript.append_message(b"msg", msg);
transcript.domain_separate(b"signature");
transcript.append_message(b"nonce", nonce.to_bytes());
<Ristretto as Ciphersuite>::hash_to_F(b"challenge", &transcript.challenge(b"challenge"))
<Ristretto as Ciphersuite>::hash_to_F(b"message_challenge", &transcript.challenge(b"challenge"))
}
pub fn ack_challenge(
from: Service,
from_key: <Ristretto as Ciphersuite>::G,
id: u64,
nonce: <Ristretto as Ciphersuite>::G,
) -> <Ristretto as Ciphersuite>::F {
let mut transcript = RecommendedTranscript::new(b"Serai Message Queue v0.1 Ackowledgement");
transcript.domain_separate(b"metadata");
transcript.append_message(b"from", bincode::serialize(&from).unwrap());
transcript.append_message(b"from_key", from_key.to_bytes());
transcript.domain_separate(b"message");
transcript.append_message(b"id", id.to_le_bytes());
transcript.domain_separate(b"signature");
transcript.append_message(b"nonce", nonce.to_bytes());
<Ristretto as Ciphersuite>::hash_to_F(b"ack_challenge", &transcript.challenge(b"challenge"))
}