From 3abab9b0874904f610cfeb7d136e97ca0ebac1e1 Mon Sep 17 00:00:00 2001
From: Ian Coleman <coleman.ian@gmail.com>
Date: Mon, 28 Aug 2017 09:45:38 +1000
Subject: [PATCH] Add a checkbox to switch litecoin key prefixes

---
 src/index.html            |  9 +++++++
 src/js/bitcoinjs-3-1-1.js | 12 ++++++++-
 src/js/index.js           | 17 +++++++++++++
 tests.js                  | 51 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 88 insertions(+), 1 deletion(-)

diff --git a/src/index.html b/src/index.html
index 21f070f..a48079e 100644
--- a/src/index.html
+++ b/src/index.html
@@ -266,6 +266,15 @@
                                 <textarea id="root-key" class="root-key form-control" data-show-qr></textarea>
                             </div>
                         </div>
+                        <div class="form-group litecoin-ltub-container hidden">
+                            <label for="litecoin-use-ltub" class="col-sm-2 control-label" data-translate>Prefixes</label>
+                            <div class="col-sm-10 checkbox">
+                                <label>
+                                    <input type="checkbox" id="litecoin-use-ltub" class="litecoin-use-ltub">
+                                    Use <code>Ltpv / Ltub</code> instead of <code>xprv / xpub</code>
+                                </label>
+                            </div>
+                        </div>
                     </form>
                 </div>
             </div>
diff --git a/src/js/bitcoinjs-3-1-1.js b/src/js/bitcoinjs-3-1-1.js
index e75e15d..e184686 100644
--- a/src/js/bitcoinjs-3-1-1.js
+++ b/src/js/bitcoinjs-3-1-1.js
@@ -9649,6 +9649,16 @@ module.exports = {
     wif: 0xef
   },
   litecoin: {
+    messagePrefix: '\x19Litecoin Signed Message:\n',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4,
+    },
+    pubKeyHash: 0x30,
+    scriptHash: 0x32,
+    wif: 0xb0
+  },
+  litecoinLtub: {
     messagePrefix: '\x19Litecoin Signed Message:\n',
     bip32: {
       public: 0x019da462,
@@ -14827,4 +14837,4 @@ module.exports = {
 
 }).call(this,require("buffer").Buffer)
 },{"bs58check":80,"buffer":4}]},{},[33])(33)
-});
\ No newline at end of file
+});
diff --git a/src/js/index.js b/src/js/index.js
index d9d5db3..80c7fa8 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -14,6 +14,7 @@
     var showPubKey = true;
     var showPrivKey = true;
     var showQr = false;
+    var litecoinUseLtub = false;
 
     var entropyChangeTimeoutEvent = null;
     var phraseChangeTimeoutEvent = null;
@@ -43,6 +44,8 @@
     DOM.generate = $(".generate");
     DOM.seed = $(".seed");
     DOM.rootKey = $(".root-key");
+    DOM.litecoinLtubContainer = $(".litecoin-ltub-container");
+    DOM.litecoinUseLtub = $(".litecoin-use-ltub");
     DOM.extendedPrivKey = $(".extended-priv-key");
     DOM.extendedPubKey = $(".extended-pub-key");
     DOM.bip32tab = $("#bip32-tab");
@@ -98,6 +101,7 @@
         DOM.generate.on("click", generateClicked);
         DOM.more.on("click", showMore);
         DOM.rootKey.on("input", delayedRootKeyChanged);
+        DOM.litecoinUseLtub.on("change", litecoinUseLtubChanged);
         DOM.bip32path.on("input", calcForDerivationPath);
         DOM.bip44account.on("input", calcForDerivationPath);
         DOM.bip44change.on("input", calcForDerivationPath);
@@ -123,6 +127,7 @@
     function networkChanged(e) {
         clearDerivedKeys();
         clearAddressesList();
+        DOM.litecoinLtubContainer.addClass("hidden");
         var networkIndex = e.target.value;
         var network = networks[networkIndex];
         network.onSelect();
@@ -274,6 +279,17 @@
         calcForDerivationPath();
     }
 
+    function litecoinUseLtubChanged() {
+        litecoinUseLtub = DOM.litecoinUseLtub.prop("checked");
+        if (litecoinUseLtub) {
+            network = bitcoinjs.bitcoin.networks.litecoinLtub;
+        }
+        else {
+            network = bitcoinjs.bitcoin.networks.litecoin;
+        }
+        phraseChanged();
+    }
+
     function calcForDerivationPath() {
         clearDerivedKeys();
         clearAddressesList();
@@ -1267,6 +1283,7 @@
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.litecoin;
                 setHdCoin(2);
+                DOM.litecoinLtubContainer.removeClass("hidden");
             },
         },
         {
diff --git a/tests.js b/tests.js
index 316a817..f192f99 100644
--- a/tests.js
+++ b/tests.js
@@ -4216,6 +4216,57 @@ page.open(url, function(status) {
 });
 },
 
+// Litecoin uses xprv by default, and can optionally be set to ltpv
+// github issue 96
+// https://github.com/iancoleman/bip39/issues/96
+// Issue with extended keys on Litecoin
+function() {
+page.open(url, function(status) {
+    // set the phrase and coin
+    page.evaluate(function() {
+        $(".phrase").val("abandon abandon ability");
+        $(".network option[selected]").removeAttr("selected");
+        $(".network option").filter(function() {
+            return $(this).html() == "LTC - Litecoin";
+        }).prop("selected", true);
+        $(".network").trigger("change");
+        $(".phrase").trigger("input");
+    });
+    // check the extended key is generated correctly
+    waitForGenerate(function() {
+        var expected = "xprv9s21ZrQH143K2jkGDCeTLgRewT9F2pH5JZs2zDmmjXes34geVnFiuNa8KTvY5WoYvdn4Ag6oYRoB6cXtc43NgJAEqDXf51xPm6fhiMCKwpi";
+        var actual = page.evaluate(function() {
+            return $(".root-key").val();
+        });
+        if (actual != expected) {
+            console.log("Litecoin root key does not default to xprv");
+            console.log("Expected: " + expected);
+            console.log("Actual: " + actual);
+            fail();
+        }
+        // set litecoin to use ltub
+        page.evaluate(function() {
+            $(".addresses").empty();
+            $(".litecoin-use-ltub").prop("checked", true);
+            $(".litecoin-use-ltub").trigger("change");
+        });
+        waitForGenerate(function() {
+            var expected = "Ltpv71G8qDifUiNesiPqf6h5V6eQ8ic77oxQiYtawiACjBEx3sTXNR2HGDGnHETYxESjqkMLFBkKhWVq67ey1B2MKQXannUqNy1RZVHbmrEjnEU";
+            var actual = page.evaluate(function() {
+                return $(".root-key").val();
+            });
+            if (actual != expected) {
+                console.log("Litecoin root key cannot be set to use ltub");
+                console.log("Expected: " + expected);
+                console.log("Actual: " + actual);
+                fail();
+            }
+            next();
+        });
+    });
+});
+},
+
 // If you wish to add more tests, do so here...
 
 // Here is a blank test template
-- 
2.41.0