Fix bug on hdprivate key generation

lib/hdprivatekey.js

@@ -404,18 +404,19 @@ HDPrivateKey.prototype._buildFromBuffers = function(arg) {
     }
   }
 
+  var network = Network.get(BufferUtil.integerFromBuffer(arg.version));
   var xprivkey;
   xprivkey = Base58Check.encode(buffer.Buffer.concat(sequence));
   arg.xprivkey = new Buffer(xprivkey);
 
-  var privateKey = new PrivateKey(BN.fromBuffer(arg.privateKey));
+  var privateKey = new PrivateKey(BN.fromBuffer(arg.privateKey), network);
   var publicKey = privateKey.toPublicKey();
   var size = HDPrivateKey.ParentFingerPrintSize;
   var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size);
 
   JSUtil.defineImmutable(this, {
     xprivkey: xprivkey,
-    network: Network.get(BufferUtil.integerFromBuffer(arg.version)),
+    network: network,
     depth: BufferUtil.integerFromSingleByteBuffer(arg.depth),
     privateKey: privateKey,
     publicKey: publicKey,

test/hdprivatekey.js

@@ -8,6 +8,7 @@ var bitcore = require('..');
 var errors = bitcore.errors;
 var hdErrors = errors.HDPrivateKey;
 var buffer = require('buffer');
+var Networks = bitcore.Networks;
 var BufferUtil = bitcore.util.buffer;
 var HDPrivateKey = bitcore.HDPrivateKey;
 var Base58Check = bitcore.encoding.Base58Check;
@@ -85,17 +86,25 @@ describe('HDPrivate key interface', function() {
     it('allows no-new calling', function() {
       HDPrivateKey(xprivkey).toString().should.equal(xprivkey);
     });
+    it('allows the use of a copy constructor', function() {
+      HDPrivateKey(HDPrivateKey(xprivkey))
+        .xprivkey.should.equal(xprivkey);
+    });
   });
 
-  it('inspect() displays correctly', function() {
-    HDPrivateKey(xprivkey).inspect().should.equal('<HDPrivateKey: ' + xprivkey + '>');
-  });
+  describe('public key', function() {
+    var testnetKey = new HDPrivateKey('tprv8ZgxMBicQKsPdEeU2KiGFnUgRGriMnQxrwrg6FWCBg4jeiidHRyCCdA357kfkZiGaXEapWZsGDKikeeEbvgXo3UmEdbEKNdQH9VXESmGuUK');
+    var livenetKey = new HDPrivateKey('xprv9s21ZrQH143K3e39bnn1vyS7YFa1EAJAFGDoeHaSBsgBxgAkTEXeSx7xLvhNQNJxJwhzziWcK3znUFKRPRwWBPkKZ8ijUBa5YYpYPQmeBDX');
 
-  it('allows the use of a copy constructor', function() {
-    HDPrivateKey(HDPrivateKey(xprivkey))
-      .xprivkey.should.equal(xprivkey);
+    it('matches the network', function() {
+      testnetKey.publicKey.network.should.equal(Networks.testnet);
+      livenetKey.publicKey.network.should.equal(Networks.livenet);
+    });
   });
 
+  it('inspect() displays correctly', function() {
+    HDPrivateKey(xprivkey).inspect().should.equal('<HDPrivateKey: ' + xprivkey + '>');
+  });
   it('fails when trying to derive with an invalid argument', function() {
     expectDerivationFail([], hdErrors.InvalidDerivationArgument);
   });