From 0702ecd3520c44cb8016f80329dcb5a3c8df88fc Mon Sep 17 00:00:00 2001
From: xarakas <harilakas@gmail.com>
Date: Mon, 30 Apr 2018 17:40:27 +0300
Subject: [PATCH] Add zcash support

---
 src/js/bitcoinjs-3.3.2.js      | 25 ++++++++++++++++++-------
 src/js/bitcoinjs-extensions.js | 11 +++++++++++
 src/js/index.js                |  8 ++++++++
 tests/spec/tests.js            |  7 +++++++
 4 files changed, 44 insertions(+), 7 deletions(-)

diff --git a/src/js/bitcoinjs-3.3.2.js b/src/js/bitcoinjs-3.3.2.js
index de75eaf..2390168 100644
--- a/src/js/bitcoinjs-3.3.2.js
+++ b/src/js/bitcoinjs-3.3.2.js
@@ -8662,13 +8662,24 @@ function fromBech32 (address) {
 }
 
 function toBase58Check (hash, version) {
-  typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)
+  if (version < 256){
+    typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)
 
-  var payload = Buffer.allocUnsafe(21)
-  payload.writeUInt8(version, 0)
-  hash.copy(payload, 1)
+    var payload = Buffer.allocUnsafe(21)
+    payload.writeUInt8(version, 0)
+    hash.copy(payload, 1)
 
-  return bs58check.encode(payload)
+    return bs58check.encode(payload)
+  }
+  else{
+    typeforce(types.tuple(types.Hash160bit, types.UInt16), arguments)
+
+    var payload = Buffer.allocUnsafe(22)
+    payload.writeUInt16BE(version, 0)
+    hash.copy(payload, 2)
+
+    return bs58check.encode(payload)
+  }
 }
 
 function toBech32 (data, version, prefix) {
@@ -12162,8 +12173,8 @@ var Network = typeforce.compile({
     public: typeforce.UInt32,
     private: typeforce.UInt32
   },
-  pubKeyHash: typeforce.UInt8,
-  scriptHash: typeforce.UInt8,
+  pubKeyHash: typeforce.oneOf(typeforce.UInt8, typeforce.UInt16),
+  scriptHash: typeforce.oneOf(typeforce.UInt8, typeforce.UInt16),
   wif: typeforce.UInt8
 })
 
diff --git a/src/js/bitcoinjs-extensions.js b/src/js/bitcoinjs-extensions.js
index b556f42..8c0f79e 100644
--- a/src/js/bitcoinjs-extensions.js
+++ b/src/js/bitcoinjs-extensions.js
@@ -1199,3 +1199,14 @@ bitcoinjs.bitcoin.networks.zcoin = {
   scriptHash: 0x07,
   wif: 0xd2,
 };
+
+bitcoinjs.bitcoin.networks.zcash = {
+  messagePrefix: '\x18Zcash Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x1CB8,
+  scriptHash: 0x1CBD,
+  wif: 0x80,
+};
diff --git a/src/js/index.js b/src/js/index.js
index 758b840..fc7e13b 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -2428,6 +2428,14 @@
                 setHdCoin(136);
             },
         },
+        {
+            name: "ZEC - Zcash",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.zcash;
+                setHdCoin(133);
+            },
+        },
     ]
 
     var clients = [
diff --git a/tests/spec/tests.js b/tests/spec/tests.js
index ac2151e..fe83447 100644
--- a/tests/spec/tests.js
+++ b/tests/spec/tests.js
@@ -1166,6 +1166,13 @@ it('Allows selection of Zcoin', function(done) {
     };
     testNetwork(done, params);
 });
+it('Allows selection of Zcash', function(done) {
+    var params = {
+        selectText: "ZEC - Zcash",
+        firstAddress: "t1Sz8AneMcVuzUg3tPJ8et5AS5LFJ7K2EF9",
+    };
+    testNetwork(done, params);
+});
 
 
 // BIP39 seed is set from phrase
-- 
2.41.0