cash-tx-builder

Transaction builder for Bitcoin Cash

lib.rs:

transaction builder for bitcoin cash

Example

#[macro_use] extern crate hex_literal;
use bch_addr::{AddressType, Converter};
use cash_tx_builder::{TxBuilder, sig_hash};
use cash_tx_builder::script::{address_to_script, p2pkh};

let converter = Converter::new();
let parser = |address: &str| {
    let parsed = converter.parse(address).ok();
    match parsed {
        Some((_, _, address_type, hash)) => {
            Some((hash, address_type == AddressType::P2PKH))
        }
        None => None
    }
};
let mut txb = TxBuilder::new(&parser);
let prev_txid = "427cfc8a960e6a33552c19bcfcbe9d59207248856fb8806ba9c7043421e1ee4c";
let prev_index = 1;
let prev_script = address_to_script("qq6zfutryz9rkem05rkpwq60pu5sxg4z5c330k4w75", &parser)?;
let prev_value = 100_000;

txb.add_input(prev_txid, prev_index, Some(prev_value), Some(&prev_script), None)?;

txb.add_address_output(11000, "qqntvyp35r7l8julzldgh8qlc49x8rpkjyh4nz5ty3")?;
txb.add_address_output(88757, "qqny0aeaayxca8d4khmh68xp44d0aqwk3sk3zpzs70")?;

let script_sig = p2pkh::script_sig(
    &hex!("0366be8427eddf9341141e5bb10486e41b1f3b33101ab3d5e816c37f30f2ddb036"),
    &hex!("304402202dacf747f6ddc911b755938a07232cfa34057f7a336f72346c438c04f4d5dbc502206a7915ce8569ab5832dae89275bdc13f2467a69684643704f1a9a38b34d55b3041")
)?;
txb.set_script_sig(0, &script_sig)?;

let hash_type = sig_hash::ALL | sig_hash::FORKID;
let sighash = txb.witness_v0_hash(hash_type, 0, None, None)?;
let txid = txb.txid();

assert_eq!(sighash, hex!("2b492e7c4c8a3d670fd7fe324a87e3c55df1802c9a100f4006f8fff7c0913dd4"));
assert_eq!(txid, "ec225c44df97f7573583c17f5b3fa55cc7bf4cc6b916ee88fd7cd3284e0dfcda");