Bitcoin Cash P2PKH input -> P2SH output example w/ BITBOX

p2sh-output.js

let mnemonic = '';

// root seed buffer
let rootSeed = BITBOX.Mnemonic.toSeed(mnemonic);

// master HDNode
let masterHDNode = BITBOX.HDNode.fromSeed(rootSeed, 'bitcoincash');

// HDNode of BIP44 account
let account = BITBOX.HDNode.derivePath(masterHDNode, "m/44'/145'/0'");

// derive HDNode
let node = BITBOX.HDNode.derivePath(account, "432/123");

// create instance of Transaction Builder class
let transactionBuilder = new BITBOX.TransactionBuilder();

// set original amount, txid and vout
let originalAmount = 18102;
let txid = 'af2804bba5538a162d68f064d7fd2baa50036b9f6a37debf745f84f12864efcc';
let vout = 0;

// add input
transactionBuilder.addInput(txid, vout);

// set fee and send amount
let fee = 250;
let sendAmount = originalAmount - fee;

// encode custom script
let script = BITBOX.Script.encode([
  Buffer.from("BOX", 'ascii'),
  BITBOX.Script.opcodes.OP_CAT,
  Buffer.from("BITBOX", 'ascii'),
  BITBOX.Script.opcodes.OP_EQUAL
])

// hash160 script buffer
let p2sh_hash160 = BITBOX.Crypto.hash160(script)

// encode hash160 as P2SH output
let scriptPubKey = BITBOX.Script.scriptHash.output.encode(p2sh_hash160)

// derive address from P2SH output
let address = BITBOX.Address.fromOutputScript(scriptPubKey)

// add output
transactionBuilder.addOutput(address, sendAmount);

// HDNode to keypair
let key = BITBOX.HDNode.toKeyPair(node);

// empty redeemScript var
let redeemScript

// sign input
transactionBuilder.sign(0, key, redeemScript, transactionBuilder.hashTypes.SIGHASH_ALL, originalAmount)

// build to hex
let hex = transactionBuilder.build().toHex()
console.log(hex)

// POST to BCH network
BITBOX.RawTransactions.sendRawTransaction(hex).then((result) => { console.log(result); }, (err) => { console.log(err); });
// 901dc9549555e4a7e821c3504883eabe14d808e6e321c06666904b6ba68aca6d