diff --git a/src/base58.js b/src/base58.js
index aabc523..9515f3d 100644
--- a/src/base58.js
+++ b/src/base58.js
@@ -3,6 +3,7 @@
 
 var BigInteger = require('./jsbn/jsbn');
 var Crypto = require('./crypto-js/crypto');
+var conv = require('/convert');
 
 var alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
 var base = BigInteger.valueOf(58);
@@ -38,7 +39,7 @@ module.exports.encode = function (input) {
 },
 
 module.exports.encodeHex = function (input) {
-    return Crypto.util.bytesToHex(module.exports.encode(input));
+    return conv.bytesToHex(module.exports.encode(input));
 }
 
 // decode a base58 string into a byte array
@@ -94,7 +95,7 @@ module.exports.checkEncode = function(input, vbyte) {
 }
 
 module.exports.checkEncodeHex = function (input, vbyte) {
-    return Crypto.util.bytesToHex(module.exports.encode(input));
+    return conv.bytesToHex(module.exports.encode(input));
 }
 
 module.exports.checkDecode = function(input) {
diff --git a/src/eckey.js b/src/eckey.js
index 13506a5..c3c13d3 100644
--- a/src/eckey.js
+++ b/src/eckey.js
@@ -121,7 +121,7 @@ ECKey.prototype.toString = function (format) {
   if (format === "base58") {
     return base58.checkEncode(this.priv.toByteArrayUnsigned(),128);
   } else {
-    return Crypto.util.bytesToHex(this.priv.toByteArrayUnsigned());
+    return conv.bytesToHex(this.priv.toByteArrayUnsigned());
   }
 };
 
diff --git a/src/transaction.js b/src/transaction.js
index 543922d..992037f 100644
--- a/src/transaction.js
+++ b/src/transaction.js
@@ -384,7 +384,7 @@ Transaction.prototype.calcImpact = function (wallet) {
   var valueOut = BigInteger.ZERO;
   for (var j = 0; j < this.outs.length; j++) {
     var txout = this.outs[j];
-    var hash = Crypto.util.bytesToHex(txout.script.simpleOutPubKeyHash());
+    var hash = conv.bytesToHex(txout.script.simpleOutPubKeyHash());
     if (wallet.hasHash(hash)) {
       valueOut = valueOut.add(util.valueToBigInt(txout.value));
     }
@@ -394,7 +394,7 @@ Transaction.prototype.calcImpact = function (wallet) {
   var valueIn = BigInteger.ZERO;
   for (var j = 0; j < this.ins.length; j++) {
     var txin = this.ins[j];
-    var hash = Crypto.util.bytesToHex(txin.script.simpleInPubKeyHash());
+    var hash = conv.bytesToHex(txin.script.simpleInPubKeyHash());
     if (wallet.hasHash(hash)) {
       var fromTx = wallet.txIndex[txin.outpoint.hash];
       if (fromTx) {
@@ -450,7 +450,7 @@ Transaction.deserialize = function(buffer) {
     for (var i = 0; i < ins; i++) {
         obj.ins.push({
             outpoint: {
-                hash: util.bytesToHex(readBytes(32)),
+                hash: conv.bytesToHex(readBytes(32)),
                 index: readAsInt(4)
             },
             script: new Script(readVarString()),
diff --git a/src/wallet.js b/src/wallet.js
index 99f73d2..c91a916 100644
--- a/src/wallet.js
+++ b/src/wallet.js
@@ -98,7 +98,7 @@ var Wallet = function () {
     var pubs = [];
 
     for (var i = 0; i < keys.length; i++) {
-      pubs.push(Crypto.util.bytesToHex(keys[i].getPub()));
+      pubs.push(conv.bytesToHex(keys[i].getPub()));
     }
 
     return pubs;
@@ -329,7 +329,7 @@ Wallet.prototype.clearTransactions = function () {
  * Check to see if a pubKeyHash belongs to this wallet.
  */
 Wallet.prototype.hasHash = function (hash) {
-  if (Bitcoin.Util.isArray(hash)) hash = Crypto.util.bytesToHex(hash);
+  if (Bitcoin.Util.isArray(hash)) hash = conv.bytesToHex(hash);
 
   // TODO: Just create an object with hashes as keys for faster lookup
   for (var k = 0; k < this.addressHashes.length; k++) {