From f4790b65ecebed9c42326cfe98f37ec547db3f0e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alvaro=20Fari=C3=B1a?= <farinalvaro@gmail.com>
Date: Mon, 22 Mar 2021 17:26:33 -0300
Subject: [PATCH] fix: gets btc publickey from privateKey

---
 src/common/transaction/btccoin.js | 4 +++-
 src/common/transaction/index.js   | 4 ++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/common/transaction/btccoin.js b/src/common/transaction/btccoin.js
index c03c797ad..736861bbc 100644
--- a/src/common/transaction/btccoin.js
+++ b/src/common/transaction/btccoin.js
@@ -54,7 +54,7 @@ export const getTransactionInputs = async ({
  * @returns {object} Transaction builder
  */
 export const buildTransaction = ({
-  inputs, fromAddress, addressType, toAddress, netType, amount, fees, publicKey,
+  inputs, fromAddress, addressType, toAddress, netType, amount, fees, privateKey,
 }) => {
   const network = netType === 'Mainnet' ? bitcoin.networks.bitcoin : bitcoin.networks.testnet;
   const cost = amount + fees;
@@ -63,6 +63,8 @@ export const buildTransaction = ({
   // Calculate redeem script
   let redeemScript = null;
   if (addressType === BtcAddressType.segwit) {
+    const buf = Buffer.from(privateKey, 'hex');
+    const { publicKey } = bitcoin.ECPair.fromPrivateKey(buf, { network });
     const p2wpkh = bitcoin.payments.p2wpkh({ pubkey: publicKey, network });
     const p2sh = bitcoin.payments.p2sh({ redeem: p2wpkh, network });
     redeemScript = p2sh.redeem.output;
diff --git a/src/common/transaction/index.js b/src/common/transaction/index.js
index e5500b815..0c4058f7b 100644
--- a/src/common/transaction/index.js
+++ b/src/common/transaction/index.js
@@ -50,7 +50,7 @@ export default class Transaction {
     console.log('Transaction.processTransaction start');
     let result = null;
     const {
-      symbol, privateKey, netType, sender, receiver, value, data, memo, gasFee, contractAddress, addressType, publicKey,
+      symbol, privateKey, netType, sender, receiver, value, data, memo, gasFee, contractAddress, addressType,
     } = this;
     try {
       if (symbol === 'BTC') {
@@ -67,7 +67,7 @@ export default class Transaction {
           netType,
           amount,
           fees,
-          publicKey,
+          privateKey,
         });
         result = btc.signTransaction({
           transactionBuilder, inputs, privateKey, netType, addressType,