clementine_core::aggregator

Struct Aggregator

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pub struct Aggregator { /* private fields */ }
Expand description

Aggregator struct. This struct is responsible for aggregating partial signatures from the verifiers. It will have in total 3 * num_operator + 1 aggregated nonces. [0] -> Aggregated nonce for the move transaction. [1..num_operator + 1] -> Aggregated nonces for the operator_takes transactions. [num_operator + 1..2 * num_operator + 1] -> Aggregated nonces for the slash_or_take transactions. [2 * num_operator + 1..3 * num_operator + 1] -> Aggregated nonces for the burn transactions. For now, we do not have the last bit.

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impl Aggregator

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pub async fn new(config: BridgeConfig) -> Result<Self, BridgeError>

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pub fn get_verifier_clients(&self) -> &[ClementineVerifierClient<Channel>]

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pub fn get_verifier_keys(&self) -> Vec<PublicKey>

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pub fn get_operator_keys(&self) -> Vec<XOnlyPublicKey>

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pub fn get_operator_clients(&self) -> &[ClementineOperatorClient<Channel>]

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pub async fn collect_and_distribute_keys( &self, deposit_params: &DepositParams, ) -> Result<(), BridgeError>

Collects and distributes keys to verifiers from operators and watchtowers for the new deposit for operators: get bitvm assert winternitz public keys and watchtower challenge ack hashes for watchtowers: get winternitz public keys for watchtower challenges

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pub async fn get_participating_verifiers( &self, deposit_data: &DepositData, ) -> Result<ParticipatingVerifiers, BridgeError>

Returns a list of verifier clients that are participating in the deposit.

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pub async fn get_participating_operators( &self, deposit_data: &DepositData, ) -> Result<ParticipatingOperators, BridgeError>

Returns a list of operator clients that are participating in the deposit.

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impl Aggregator

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pub async fn collect_operator_xonly_public_keys_with_clients( operator_clients: &[ClementineOperatorClient<Channel>], ) -> Result<Vec<XOnlyPublicKey>, BridgeError>

Fetches operator xonly public keys from operators.

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pub async fn collect_operator_xonly_public_keys( &self, ) -> Result<Vec<XOnlyPublicKey>, BridgeError>

Fetches operator xonly public keys from operators.

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pub async fn collect_verifier_public_keys_with_clients( verifier_clients: &[ClementineVerifierClient<Channel>], ) -> Result<(Vec<Vec<u8>>, Vec<PublicKey>), BridgeError>

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pub async fn collect_verifier_public_keys( &self, ) -> Result<VerifierPublicKeys, BridgeError>

Fetches verifier public keys from verifiers and sets up N-of-N.

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pub async fn generate_combined_emergency_stop_tx( &self, move_txids: Vec<Txid>, add_anchor: bool, ) -> Result<Transaction, BridgeError>

Trait Implementations§

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impl ClementineAggregator for Aggregator

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fn new_deposit<'life0, 'async_trait>( &'life0 self, request: Request<Deposit>, ) -> Pin<Box<dyn Future<Output = Result<Response<RawSignedTx>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Handles a new deposit request from a user. This function coordinates the signing process between verifiers to create a valid move transaction. It ensures a covenant using pre-signed NofN transactions. It also collects signatures from operators to ensure that the operators can be slashed if they act maliciously.

Overview:

  1. Receive and parse deposit parameters from user
  2. Signs all NofN transactions with verifiers using MuSig2:
    • Creates nonce streams with verifiers (get pub nonces for each transaction)
    • Opens deposit signing streams with verifiers (sends aggnonces for each transaction, receives partial sigs)
    • Opens deposit finalization streams with verifiers (sends final signatures, receives movetx signatures)
  3. Collects signatures from operators
  4. Waits for all tasks to complete
  5. Returns signed move transaction

The following pipelines are used to coordinate the signing process, these move the data between the verifiers and the aggregator:

  • Nonce aggregation
  • Nonce distribution
  • Signature aggregation
  • Signature distribution
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fn vergen<'life0, 'async_trait>( &'life0 self, _request: Request<Empty>, ) -> Pin<Box<dyn Future<Output = Result<Response<VergenResponse>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn optimistic_payout<'life0, 'async_trait>( &'life0 self, request: Request<WithdrawParams>, ) -> Pin<Box<dyn Future<Output = Result<Response<RawSignedTx>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Perform an optimistic payout to reimburse a peg-out from Citrea
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fn internal_send_tx<'life0, 'async_trait>( &'life0 self, request: Request<SendTxRequest>, ) -> Pin<Box<dyn Future<Output = Result<Response<Empty>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Send a pre-signed tx to the network
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fn setup<'life0, 'async_trait>( &'life0 self, _request: Request<Empty>, ) -> Pin<Box<dyn Future<Output = Result<Response<VerifierPublicKeys>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Sets up the system of verifiers, watchtowers and operators by: Read more
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fn withdraw<'life0, 'async_trait>( &'life0 self, request: Request<WithdrawParams>, ) -> Pin<Box<dyn Future<Output = Result<Response<AggregatorWithdrawResponse>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Call’s withdraw on all operators Used by the clementine-backend service to initiate a withdrawal
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fn get_nofn_aggregated_xonly_pk<'life0, 'async_trait>( &'life0 self, __arg1: Request<Empty>, ) -> Pin<Box<dyn Future<Output = Result<Response<NofnResponse>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn internal_create_emergency_stop_tx<'life0, 'async_trait>( &'life0 self, request: Request<CreateEmergencyStopTxRequest>, ) -> Pin<Box<dyn Future<Output = Result<Response<SignedTxWithType>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Creates an emergency stop tx that won’t be broadcasted. Tx will have around 3 sats/vbyte fee. Set add_anchor to true to add an anchor output for cpfp..
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fn send_move_to_vault_tx<'life0, 'async_trait>( &'life0 self, request: Request<SendMoveTxRequest>, ) -> Pin<Box<dyn Future<Output = Result<Response<Txid>, Status>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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impl Clone for Aggregator

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fn clone(&self) -> Aggregator

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Aggregator

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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