diff --git a/lib/publickey.js b/lib/publickey.js
index 16821a4ba..3577801b1 100644
--- a/lib/publickey.js
+++ b/lib/publickey.js
@@ -52,8 +52,6 @@ var PublicKey = function PublicKey(data, extra) {
     info.point = data;
   } else if (PublicKey._isJSON(data)) {
     info = PublicKey._transformJSON(data);
-  } else if (typeof(data) === 'string') {
-    info = PublicKey._transformDER(new Buffer(data, 'hex'));
   } else if (PublicKey._isBuffer(data)) {
     info = PublicKey._transformDER(data);
   } else if (PublicKey._isPrivateKey(data)) {
@@ -92,8 +90,7 @@ var PublicKey = function PublicKey(data, extra) {
  * @private
  */
 PublicKey._isPrivateKey = function(param) {
-  return param && param.constructor && param.constructor.name
-      && param.constructor.name === 'PrivateKey';
+  return param && param.constructor && param.constructor.name && param.constructor.name === 'PrivateKey';
 };
 
 /**
@@ -143,7 +140,7 @@ PublicKey._transformPrivateKey = function(privkey) {
  * @returns {Object} An object with keys: point and compressed
  * @private
  */
-PublicKey._transformDER = function(buf){
+PublicKey._transformDER = function(buf) {
   var info = {};
   if (!PublicKey._isBuffer(buf)) {
     throw new TypeError('Must be a hex buffer of DER encoded public key');
@@ -188,7 +185,7 @@ PublicKey._transformDER = function(buf){
  * @returns {Object} An object with keys: point and compressed
  * @private
  */
-PublicKey._transformX = function(odd, x){
+PublicKey._transformX = function(odd, x) {
   var info = {};
   if (typeof odd !== 'boolean') {
     throw new TypeError('Must specify whether y is odd or not (true or false)');
@@ -225,7 +222,9 @@ PublicKey._transformJSON = function(json) {
   var x = BN(json.x, 'hex');
   var y = BN(json.y, 'hex');
   var point = new Point(x, y);
-  return new PublicKey(point, {compressed: json.compressed});
+  return new PublicKey(point, {
+    compressed: json.compressed
+  });
 };
 
 /**
@@ -239,7 +238,10 @@ PublicKey.fromPrivateKey = function(privkey) {
     throw new TypeError('Must be an instance of PrivateKey');
   }
   var info = PublicKey._transformPrivateKey(privkey);
-  return new PublicKey(info.point, {compressed: info.compressed, network: info.network});
+  return new PublicKey(info.point, {
+    compressed: info.compressed,
+    network: info.network
+  });
 };
 
 /**
@@ -253,7 +255,9 @@ PublicKey.fromDER = PublicKey.fromBuffer = function(buf) {
     throw new TypeError('Must be a hex buffer of DER encoded public key');
   }
   var info = PublicKey._transformDER(buf);
-  return new PublicKey(info.point, {compressed: info.compressed});
+  return new PublicKey(info.point, {
+    compressed: info.compressed
+  });
 };
 
 /**
@@ -263,11 +267,13 @@ PublicKey.fromDER = PublicKey.fromBuffer = function(buf) {
  * @param {boolean=true} compressed - whether to store this public key as compressed format
  * @returns {PublicKey} A new valid instance of PublicKey
  */
-PublicKey.fromPoint = function(point, compressed){
+PublicKey.fromPoint = function(point, compressed) {
   if (!(point instanceof Point)) {
     throw new TypeError('First argument must be an instance of Point.');
   }
-  return new PublicKey(point, {compressed: compressed});
+  return new PublicKey(point, {
+    compressed: compressed
+  });
 };
 
 /**
@@ -280,7 +286,9 @@ PublicKey.fromPoint = function(point, compressed){
 PublicKey.fromString = function(str, encoding) {
   var buf = new Buffer(str, encoding || 'hex');
   var info = PublicKey._transformDER(buf);
-  return new PublicKey(info.point, {compressed: info.compressed});
+  return new PublicKey(info.point, {
+    compressed: info.compressed
+  });
 };
 
 /**
@@ -292,7 +300,9 @@ PublicKey.fromString = function(str, encoding) {
  */
 PublicKey.fromX = function(odd, x) {
   var info = PublicKey._transformX(odd, x);
-  return new PublicKey(info.point, {compressed: info.compressed});
+  return new PublicKey(info.point, {
+    compressed: info.compressed
+  });
 };
 
 /**
@@ -334,7 +344,7 @@ PublicKey.prototype.toObject = function toObject() {
   };
 };
 
-PublicKey.prototype.toJSON = function toJSON(){
+PublicKey.prototype.toJSON = function toJSON() {
   return JSON.stringify(this.toObject());
 };
 
@@ -347,8 +357,12 @@ PublicKey.prototype.toBuffer = PublicKey.prototype.toDER = function() {
   var x = this.point.getX();
   var y = this.point.getY();
 
-  var xbuf = x.toBuffer({size: 32});
-  var ybuf = y.toBuffer({size: 32});
+  var xbuf = x.toBuffer({
+    size: 32
+  });
+  var ybuf = y.toBuffer({
+    size: 32
+  });
 
   var prefix;
   if (!this.compressed) {
@@ -395,4 +409,5 @@ PublicKey.prototype.inspect = function() {
     (this.network ? this.network.name : '') + '>';
 };
 
+
 module.exports = PublicKey;
diff --git a/lib/script_interpreter.js b/lib/script_interpreter.js
index 2057b382c..d6839472c 100644
--- a/lib/script_interpreter.js
+++ b/lib/script_interpreter.js
@@ -149,7 +149,7 @@ ScriptInterpreter.prototype.checkSignatureEncoding = function(buf) {
  * Translated from bitcoind's CheckPubKeyEncoding
  */
 ScriptInterpreter.prototype.checkPubkeyEncoding = function(buf) {
-  if ((this.flags & ScriptInterpreter.SCRIPT_VERIFY_STRICTENC) !== 0 && !PublicKey.isCompressedOrUncompressed(buf)) {
+  if ((this.flags & ScriptInterpreter.SCRIPT_VERIFY_STRICTENC) !== 0 && !PublicKey.isValid(buf)) {
     this.errstr = 'SCRIPT_ERR_PUBKEYTYPE';
     return false;
   }
@@ -879,7 +879,9 @@ ScriptInterpreter.prototype.step = function() {
           });
 
           // Drop the signature, since there's no way for a signature to sign itself
-          subscript.findAndDelete(Script().writeBuffer(bufSig));
+          console.log(subscript.toString());
+          subscript.findAndDelete(Script().add(bufSig));
+          console.log(subscript.toString());
 
           if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) {
             // serror is set