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Make DKG Encryption a bit more flexible

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No longer requires the use of an EncryptionKeyMessage, and allows pre-defined
keys for encryption.
This commit is contained in:
Luke Parker
2024-07-23 19:21:27 -04:00
parent 772d033bb2
commit b8472963c9
4 changed files with 123 additions and 109 deletions
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15
processor/src/key_gen.rs
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@@ -184,13 +184,12 @@ impl<N: Network, D: Db> KeyGen<N, D> {
const NETWORK_KEY_CONTEXT: &str = "network";
let context = |id: &KeyGenId, key| {
// TODO2: Also embed the chain ID/genesis block
format!(
"Serai Key Gen. Session: {:?}, Network: {:?}, Attempt: {}, Key: {}",
id.session,
N::NETWORK,
id.attempt,
key,
)
let mut transcript = RecommendedTranscript::new(b"Serai Key Gen");
transcript.append_message(b"session", id.session.0.to_le_bytes());
transcript.append_message(b"network", N::ID);
transcript.append_message(b"attempt", id.attempt.to_le_bytes());
transcript.append_message(b"key", key);
<[u8; 32]>::try_from(&(&transcript.challenge(b"context"))[.. 32]).unwrap()
};
let rng = |label, id: KeyGenId| {
@@ -557,7 +556,6 @@ impl<N: Network, D: Db> KeyGen<N, D> {
blame.clone().and_then(|blame| EncryptionKeyProof::read(&mut blame.as_slice()).ok());
let substrate_blame = AdditionalBlameMachine::new(
&mut rand_core::OsRng,
context(&id, SUBSTRATE_KEY_CONTEXT),
params.n(),
substrate_commitment_msgs,
@@ -565,7 +563,6 @@ impl<N: Network, D: Db> KeyGen<N, D> {
.unwrap()
.blame(accuser, accused, substrate_share, substrate_blame);
let network_blame = AdditionalBlameMachine::new(
&mut rand_core::OsRng,
context(&id, NETWORK_KEY_CONTEXT),
params.n(),
network_commitment_msgs,