From fcc03db7409f2e7761c5e92ac95c209e89aba2f4 Mon Sep 17 00:00:00 2001
From: Peter Bushnell <bushsolo@gmail.com>
Date: Sun, 21 Jun 2020 13:30:49 +0100
Subject: [PATCH] Add Feathercoin support

---
 index.html        |  2 ++
 js/bip32.js       | 18 ++++++++++++++++++
 js/brainwallet.js | 16 ++++++++++++++++
 3 files changed, 36 insertions(+)

diff --git a/index.html b/index.html
index 3741dce..42e21f9 100644
--- a/index.html
+++ b/index.html
@@ -49,6 +49,8 @@
                 <li><a href="#" id="ltc_test">Litecoin Testnet</a></li>
                 <li><a href="http://dogechain.info/address/" id="doge_main">Dogecoin Mainnet</a></li>
                 <li><a href="#" id="doge_test">Dogecoin Testnet</a></li>
+                <li><a href="http://chainz.cryptoid.info/ftc/" id="ftc_main">Feathercoin Mainnet</a></li>
+                <li><a href="#" id="ftc_test">Feathercoin Testnet</a></li>
                 <li><a href="https://chainz.cryptoid.info/jbs/" id="jbs_main">Jumbucks Mainnet</a></li>
                 <!-- Unsupported right now
                 <li><a href="http://explorer.litecoin.net/address/" title="0x30">LTC</a></li>
diff --git a/js/bip32.js b/js/bip32.js
index 887d723..717bf09 100644
--- a/js/bip32.js
+++ b/js/bip32.js
@@ -11,6 +11,10 @@ var DOGECOIN_MAINNET_PUBLIC = 0x02facafd;        // and chain code are the same
 var DOGECOIN_MAINNET_PRIVATE = 0x02fac398;
 var DOGECOIN_TESTNET_PUBLIC = 0x0432a9a8;
 var DOGECOIN_TESTNET_PRIVATE = 0x0432a243;
+var FEATHERCOIN_MAINNET_PUBLIC = 0x0488bc26;
+var FEATHERCOIN_MAINNET_PRIVATE = 0x0488daee;
+var FEATHERCOIN_TESTNET_PUBLIC = 0x043587cf;
+var FEATHERCOIN_TESTNET_PRIVATE = 0x04358394;
 var JUMBUCKS_MAINNET_PUBLIC = 0x037a689a;
 var JUMBUCKS_MAINNET_PRIVATE = 0x037a6460;
 var LITECOIN_MAINNET_PUBLIC = 0x019da462;
@@ -56,6 +60,8 @@ BIP32.prototype.init_from_bytes = function(bytes) {
          this.version == BITCOIN_CASH_TESTNET_PRIVATE  ||
          this.version == DOGECOIN_MAINNET_PRIVATE      ||
          this.version == DOGECOIN_TESTNET_PRIVATE      ||
+         this.version == FEATHERCOIN_MAINNET_PRIVATE   ||
+         this.version == FEATHERCOIN_TESTNET_PRIVATE   ||
          this.version == JUMBUCKS_MAINNET_PRIVATE      ||
          this.version == LITECOIN_MAINNET_PRIVATE      ||
          this.version == LITECOIN_TESTNET_PRIVATE      );
@@ -67,6 +73,8 @@ BIP32.prototype.init_from_bytes = function(bytes) {
          this.version == BITCOIN_CASH_TESTNET_PUBLIC  ||
          this.version == DOGECOIN_MAINNET_PUBLIC      ||
          this.version == DOGECOIN_TESTNET_PUBLIC      ||
+         this.version == FEATHERCOIN_MAINNET_PUBLIC   ||
+         this.version == FEATHERCOIN_TESTNET_PUBLIC   ||
          this.version == JUMBUCKS_MAINNET_PUBLIC      ||
          this.version == LITECOIN_MAINNET_PUBLIC      ||
          this.version == LITECOIN_TESTNET_PUBLIC      );
@@ -123,6 +131,14 @@ BIP32.prototype.build_extended_public_key = function() {
     case DOGECOIN_TESTNET_PRIVATE:
         v = DOGECOIN_TESTNET_PUBLIC;
         break;
+    case FEATHERCOIN_MAINNET_PUBLIC:
+    case FEATHERCOIN_MAINNET_PRIVATE:
+        v = FEATHERCOIN_MAINNET_PUBLIC;
+        break;
+    case FEATHERCOIN_TESTNET_PUBLIC:
+    case FEATHERCOIN_TESTNET_PRIVATE:
+        v = FEATHERCOIN_TESTNET_PUBLIC;
+        break;
     case JUMBUCKS_MAINNET_PUBLIC:
     case JUMBUCKS_MAINNET_PRIVATE:
         v = JUMBUCKS_MAINNET_PUBLIC;
@@ -271,6 +287,8 @@ BIP32.prototype.derive_child = function(i) {
          this.version == BITCOIN_CASH_TESTNET_PRIVATE  ||
          this.version == DOGECOIN_MAINNET_PRIVATE      ||
          this.version == DOGECOIN_TESTNET_PRIVATE      ||
+         this.version == FEATHERCOIN_MAINNET_PRIVATE   ||
+         this.version == FEATHERCOIN_TESTNET_PRIVATE   ||
          this.version == JUMBUCKS_MAINNET_PRIVATE      ||
          this.version == LITECOIN_MAINNET_PRIVATE      ||
          this.version == LITECOIN_TESTNET_PRIVATE      );
diff --git a/js/brainwallet.js b/js/brainwallet.js
index f181533..8ea93ae 100644
--- a/js/brainwallet.js
+++ b/js/brainwallet.js
@@ -61,6 +61,22 @@
             bip32_public: DOGECOIN_TESTNET_PUBLIC,
             bip32_private: DOGECOIN_TESTNET_PRIVATE
         },
+        ftc_main: {
+            name: "Feathercoin",
+            network: "Mainnet",
+            prefix: 0x0e,
+            private_prefix: 0x0e+0x80,
+            bip32_public: FEATHERCOIN_MAINNET_PUBLIC,
+            bip32_private: FEATHERCOIN_MAINNET_PRIVATE
+        },
+        ftc_test: {
+            name: "Feathercoin",
+            network: "Testnet",
+            prefix: 0x6f,
+            private_prefix: 0x6f+0x80,
+            bip32_public: FEATHERCOIN_TESTNET_PUBLIC,
+            bip32_private: FEATHERCOIN_TESTNET_PRIVATE
+        },
         jbs_main: {
             name: "Jumbucks",
             network: "Mainnet",