ddk-dlc

Low-level primitives for creating, signing, and verifying Bitcoin transactions used in Discreet Log Contract (DLC) protocols.

This crate handles all DLC transaction types including funding, contract execution transactions (CETs), refund transactions, and DLC channel operations.

Transaction Creation

use ddk_dlc::{create_dlc_transactions, PartyParams};

// Create complete set of DLC transactions
let dlc_txs = create_dlc_transactions(
    &offer_params,
    &accept_params,
    &payouts,
    refund_lock_time,
    fee_rate,
    fund_lock_time,
    cet_lock_time,
    fund_output_serial_id,
)?;

// Access individual transactions
let fund_tx = dlc_txs.fund;
let cets = dlc_txs.cets;
let refund_tx = dlc_txs.refund;

Adaptor Signatures

use ddk_dlc::{create_cet_adaptor_sig_from_oracle_info, sign_cet};

// Create adaptor signature for CET
let adaptor_sig = create_cet_adaptor_sig_from_oracle_info(
    &secp,
    &cet,
    &adaptor_info,
    &funding_script_pubkey,
    fund_output_value,
    &secret_key,
)?;

// Sign CET with oracle attestation
let signed_cet = sign_cet(
    &secp,
    &cet,
    &adaptor_sig,
    &oracle_signatures,
    &funding_script_pubkey,
    fund_output_value,
    &own_secret_key,
)?;

Key Functions

Channel Operations

The channel module provides functions for DLC channels:

• create_channel_transactions - Create DLC channel transactions with revocation
• create_buffer_transaction - Create buffer transaction for revocation
• create_settle_transaction - Create settle transaction
• create_collaborative_close_transaction - Create collaborative close

Features

License

This project is licensed under the MIT License.