From e08777f58ec63b1d7420176b773bdd87ea41465c Mon Sep 17 00:00:00 2001
From: KhalilBellakrid <khalil.bellakrid@ledger.fr>
Date: Fri, 9 Nov 2018 10:21:48 +0100
Subject: [PATCH] Decred Integration

---
 src/commands/libcoreSignAndBroadcast.js | 7 +++++++
 src/config/cryptocurrencies.js          | 1 +
 2 files changed, 8 insertions(+)

diff --git a/src/commands/libcoreSignAndBroadcast.js b/src/commands/libcoreSignAndBroadcast.js
index 79cdaed5..542fb715 100644
--- a/src/commands/libcoreSignAndBroadcast.js
+++ b/src/commands/libcoreSignAndBroadcast.js
@@ -115,6 +115,8 @@ async function signTransaction({
     if (blockHeight >= 419200) {
       additionals.push('sapling')
     }
+  } else if (currency.id === 'decred') {
+    expiryHeight = Buffer.from([0x00, 0x00, 0x00, 0x00])
   }
   const rawInputs = transaction.getInputs()
 
@@ -122,6 +124,10 @@ async function signTransaction({
 
   const inputs = await Promise.all(
     rawInputs.map(async input => {
+      const additionals = []
+      if (currency.id === 'decred') {
+        additionals.push('decred')
+      }
       const rawPreviousTransaction = await input.getPreviousTransaction()
       const hexPreviousTransaction = Buffer.from(rawPreviousTransaction).toString('hex')
       const previousTransaction = hwApp.splitTransaction(
@@ -129,6 +135,7 @@ async function signTransaction({
         currency.supportsSegwit,
         hasTimestamp,
         hasExtraData,
+        additionals,
       )
       const outputIndex = input.getPreviousOutputIndex()
       const sequence = input.getSequence()
diff --git a/src/config/cryptocurrencies.js b/src/config/cryptocurrencies.js
index 4c6d1ea5..c29ccbc7 100644
--- a/src/config/cryptocurrencies.js
+++ b/src/config/cryptocurrencies.js
@@ -27,6 +27,7 @@ const supported: CryptoCurrencyIds[] = [
   'stealthcoin',
   'poswallet',
   'clubcoin',
+  'decred',
   'bitcoin_testnet',
 ]