diff --git a/js/ContentObject.js b/js/ContentObject.js
index 0427df6..71aed69 100644
--- a/js/ContentObject.js
+++ b/js/ContentObject.js
@@ -140,13 +140,13 @@
 			this.signedInfo = new SignedInfo();
 			this.signedInfo.from_ccnb(decoder);
 		}
-		
-		this.content = decoder.readBinaryElement(CCNProtocolDTags.Content);
 
+        if (decoder.peekTypeAndVal() == null)
+            this.content = null;
+        else
+            this.content = decoder.readBinaryElement(CCNProtocolDTags.Content);
 		
-		//this.endContent = decoder.offset;
 		this.endSIG = decoder.offset;
-
 		
 		decoder.readEndElement();
 		
diff --git a/js/tools/build/ndn-js-uncomp.js b/js/tools/build/ndn-js-uncomp.js
index 274879c..b4c34d9 100644
--- a/js/tools/build/ndn-js-uncomp.js
+++ b/js/tools/build/ndn-js-uncomp.js
@@ -485,8 +485,10 @@
  
 /*
  * Create a new Name from _components.
- * If _components is a string, parse it as a URI.  Otherwise it is an array of components
- * where each is a string, byte array, ArrayBuffer or Uint8Array. 
+ * If _components is a string, parse it as a URI.
+ * If _components is a Name, add a deep copy of its components.
+ * Otherwise it is an array of components where each is a string, byte array, ArrayBuffer, Uint8Array
+ *   or Name. 
  * Convert and store as an array of Uint8Array.
  * If a component is a string, encode as utf8.
  */
@@ -496,10 +498,13 @@
 		this.components = Name.createNameArray(_components);
 	}
 	else if(typeof _components === 'object'){		
-		if(LOG>4)console.log('Content Name Array '+_components);
 		this.components = [];
-        for (var i = 0; i < _components.length; ++i)
-            this.add(_components[i]);
+        if (_components instanceof Name)
+            this.add(_components);
+        else {
+            for (var i = 0; i < _components.length; ++i)
+                this.add(_components[i]);
+        }
 	}
 	else if(_components==null)
 		this.components =[];
@@ -593,10 +598,10 @@
 };
 
 /*
- * component is a string, byte array, ArrayBuffer or Uint8Array.
+ * component is a string, byte array, ArrayBuffer, Uint8Array or Name.
  * Convert to Uint8Array and add to this Name.
  * If a component is a string, encode as utf8.
- * Return the converted value.
+ * Return this Name object to allow chaining calls to add.
  */
 Name.prototype.add = function(component){
     var result;
@@ -609,6 +614,18 @@
         result = new Uint8Array(new ArrayBuffer(component.byteLength));
         result.set(new Uint8Array(component));
     }
+    else if (typeof component == 'object' && component instanceof Name) {
+        var components;
+        if (component == this)
+            // special case, when we need to create a copy
+            components = this.components.slice(0, this.components.length);
+        else
+            components = component.components;
+        
+        for (var i = 0; i < components.length; ++i)
+            this.components.push(new Uint8Array(components[i]));
+        return this;
+    }
 	else if(typeof component == 'object')
         // Assume component is a byte array.  We can't check instanceof Array because
         //   this doesn't work in JavaScript if the array comes from a different module.
@@ -617,7 +634,8 @@
 		throw new Error("Cannot add Name element at index " + this.components.length + 
             ": Invalid type");
     
-	return this.components.push(result);
+    this.components.push(result);
+	return this;
 };
 
 // Return the escaped name string according to "CCNx URI Scheme".
@@ -956,13 +974,13 @@
 			this.signedInfo = new SignedInfo();
 			this.signedInfo.from_ccnb(decoder);
 		}
-		
-		this.content = decoder.readBinaryElement(CCNProtocolDTags.Content);
 
+        if (decoder.peekTypeAndVal() == null)
+            this.content = null;
+        else
+            this.content = decoder.readBinaryElement(CCNProtocolDTags.Content);
 		
-		//this.endContent = decoder.offset;
 		this.endSIG = decoder.offset;
-
 		
 		decoder.readEndElement();
 		
@@ -3196,28 +3214,21 @@
 	return new TypeAndVal(type, val);
 };
 
-
-
 //TypeAndVal
-BinaryXMLDecoder.peekTypeAndVal = function() {
+BinaryXMLDecoder.prototype.peekTypeAndVal = function() {
 	//TypeAndVal 
 	var tv = null;
-	
-	//this.istream.mark(LONG_BYTES*2);		
-	
 	var previousOffset = this.offset;
 	
 	try {
 		tv = this.decodeTypeAndVal();
 	} finally {
-		//this.istream.reset();
 		this.offset = previousOffset;
 	}
 	
 	return tv;
 };
 
-
 //Uint8Array
 BinaryXMLDecoder.prototype.decodeBlob = function(
 		//int 
diff --git a/js/tools/build/ndn-js.js b/js/tools/build/ndn-js.js
index fb07e3a..3c69e2f 100644
--- a/js/tools/build/ndn-js.js
+++ b/js/tools/build/ndn-js.js
@@ -13,13 +13,13 @@
 "Parameters","InfoString",null,"StatusResponse","StatusCode","StatusText","SyncNode","SyncNodeKind","SyncNodeElement","SyncVersion","SyncNodeElements","SyncContentHash","SyncLeafCount","SyncTreeDepth","SyncByteCount","ConfigSlice","ConfigSliceList","ConfigSliceOp"],CCNTime=function(a){this.NANOS_MAX=999877929;"number"==typeof a?this.msec=a:1<LOG&&console.log("UNRECOGNIZED TYPE FOR TIME")};CCNTime.prototype.getJavascriptDate=function(){var a=new Date;a.setTime(this.msec);return a};
 var ExponentialReExpressClosure=function(a,b){Closure.call(this);this.callerClosure=a;b=b||{};this.maxInterestLifetime=b.maxInterestLifetime||16E3};
 ExponentialReExpressClosure.prototype.upcall=function(a,b){try{if(a==Closure.UPCALL_INTEREST_TIMED_OUT){var c=b.interest.interestLifetime;if(null==c)return this.callerClosure.upcall(Closure.UPCALL_INTEREST_TIMED_OUT,b);c*=2;if(c>this.maxInterestLifetime)return this.callerClosure.upcall(Closure.UPCALL_INTEREST_TIMED_OUT,b);var d=b.interest.clone();d.interestLifetime=c;b.ndn.expressInterest(d.name,this,d);return Closure.RESULT_OK}return this.callerClosure.upcall(a,b)}catch(e){return console.log("ExponentialReExpressClosure.upcall exception: "+
-e),Closure.RESULT_ERR}};var Name=function Name(b){if("string"==typeof b)3<LOG&&console.log("Content Name String "+b),this.components=Name.createNameArray(b);else if("object"===typeof b){4<LOG&&console.log("Content Name Array "+b);this.components=[];for(var c=0;c<b.length;++c)this.add(b[c])}else null==b?this.components=[]:1<LOG&&console.log("NO CONTENT NAME GIVEN")};Name.prototype.getName=function(){return this.to_uri()};
+e),Closure.RESULT_ERR}};var Name=function Name(b){if("string"==typeof b)3<LOG&&console.log("Content Name String "+b),this.components=Name.createNameArray(b);else if("object"===typeof b)if(this.components=[],b instanceof Name)this.add(b);else for(var c=0;c<b.length;++c)this.add(b[c]);else null==b?this.components=[]:1<LOG&&console.log("NO CONTENT NAME GIVEN")};Name.prototype.getName=function(){return this.to_uri()};
 Name.createNameArray=function(a){a=a.trim();if(0>=a.length)return[];var b=a.indexOf(":");if(0<=b){var c=a.indexOf("/");if(0>c||b<c)a=a.substr(b+1,a.length-b-1).trim()}if("/"==a[0])if(2<=a.length&&"/"==a[1]){b=a.indexOf("/",2);if(0>b)return[];a=a.substr(b+1,a.length-b-1).trim()}else a=a.substr(1,a.length-1).trim();a=a.split("/");for(b=0;b<a.length;++b)c=Name.fromEscapedString(a[b]),null==c?(a.splice(b,1),--b):a[b]=c;return a};
 Name.prototype.from_ccnb=function(a){a.readStartElement(this.getElementLabel());for(this.components=[];a.peekStartElement(CCNProtocolDTags.Component);)this.add(a.readBinaryElement(CCNProtocolDTags.Component));a.readEndElement()};Name.prototype.to_ccnb=function(a){if(null==this.components)throw Error("CANNOT ENCODE EMPTY CONTENT NAME");a.writeStartElement(this.getElementLabel());for(var b=this.components.length,c=0;c<b;c++)a.writeElement(CCNProtocolDTags.Component,this.components[c]);a.writeEndElement()};
 Name.prototype.getElementLabel=function(){return CCNProtocolDTags.Name};
-Name.prototype.add=function(a){var b;if("string"==typeof a)b=DataUtils.stringToUtf8Array(a);else if("object"==typeof a&&a instanceof Uint8Array)b=new Uint8Array(a);else if("object"==typeof a&&a instanceof ArrayBuffer)b=new Uint8Array(new ArrayBuffer(a.byteLength)),b.set(new Uint8Array(a));else if("object"==typeof a)b=new Uint8Array(a);else throw Error("Cannot add Name element at index "+this.components.length+": Invalid type");return this.components.push(b)};
-Name.prototype.to_uri=function(){if(0==this.components.length)return"/";for(var a="",b=0;b<this.components.length;++b)a+="/"+Name.toEscapedString(this.components[b]);return a};Name.prototype.addSegment=function(a){var a=DataUtils.nonNegativeIntToBigEndian(a),b=new Uint8Array(a.length+1);b.set(a,1);this.components.push(b);return this};Name.prototype.getPrefix=function(a){return new Name(this.components.slice(0,a))};
-Name.prototype.getComponent=function(a){var b=new ArrayBuffer(this.components[a].length);(new Uint8Array(b)).set(this.components[a]);return b};Name.prototype.indexOfFileName=function(){for(var a=this.components.length-1;0<=a;--a){var b=this.components[a];if(!(0>=b.length)&&!(0==b[0]||192==b[0]||193==b[0]||245<=b[0]&&255>=b[0]))return a}return-1};
+Name.prototype.add=function(a){var b;if("string"==typeof a)b=DataUtils.stringToUtf8Array(a);else if("object"==typeof a&&a instanceof Uint8Array)b=new Uint8Array(a);else if("object"==typeof a&&a instanceof ArrayBuffer)b=new Uint8Array(new ArrayBuffer(a.byteLength)),b.set(new Uint8Array(a));else{if("object"==typeof a&&a instanceof Name){a=a==this?this.components.slice(0,this.components.length):a.components;for(b=0;b<a.length;++b)this.components.push(new Uint8Array(a[b]));return this}if("object"==typeof a)b=
+new Uint8Array(a);else throw Error("Cannot add Name element at index "+this.components.length+": Invalid type");}this.components.push(b);return this};Name.prototype.to_uri=function(){if(0==this.components.length)return"/";for(var a="",b=0;b<this.components.length;++b)a+="/"+Name.toEscapedString(this.components[b]);return a};Name.prototype.addSegment=function(a){var a=DataUtils.nonNegativeIntToBigEndian(a),b=new Uint8Array(a.length+1);b.set(a,1);this.components.push(b);return this};
+Name.prototype.getPrefix=function(a){return new Name(this.components.slice(0,a))};Name.prototype.getComponent=function(a){var b=new ArrayBuffer(this.components[a].length);(new Uint8Array(b)).set(this.components[a]);return b};Name.prototype.indexOfFileName=function(){for(var a=this.components.length-1;0<=a;--a){var b=this.components[a];if(!(0>=b.length)&&!(0==b[0]||192==b[0]||193==b[0]||245<=b[0]&&255>=b[0]))return a}return-1};
 Name.prototype.equalsName=function(a){if(this.components.length!=a.components.length)return!1;for(var b=this.components.length-1;0<=b;--b)if(!DataUtils.arraysEqual(this.components[b],a.components[b]))return!1;return!0};Name.prototype.getContentDigestValue=function(){for(var a=this.components.length-1;0<=a;--a){var b=Name.getComponentContentDigestValue(this.components[a]);if(null!=b)return b}return null};
 Name.getComponentContentDigestValue=function(a){return a.length==Name.ContentDigestPrefix.length+32+Name.ContentDigestSuffix.length&&DataUtils.arraysEqual(a.subarray(0,Name.ContentDigestPrefix.length),Name.ContentDigestPrefix)&&DataUtils.arraysEqual(a.subarray(a.length-Name.ContentDigestSuffix.length,a.length),Name.ContentDigestSuffix)?a.subarray(Name.ContentDigestPrefix.length,Name.ContentDigestPrefix.length+32):null};Name.ContentDigestPrefix=new Uint8Array([193,46,77,46,71,193,1,170,2,133]);
 Name.ContentDigestSuffix=new Uint8Array([0]);Name.toEscapedString=function(a){for(var b="",c=!1,d=0;d<a.length;++d)if(46!=a[d]){c=!0;break}if(c)for(d=0;d<a.length;++d)c=a[d],b=48<=c&&57>=c||65<=c&&90>=c||97<=c&&122>=c||43==c||45==c||46==c||95==c?b+String.fromCharCode(c):b+("%"+(16>c?"0":"")+c.toString(16).toUpperCase());else{b="...";for(d=0;d<a.length;++d)b+="."}return b};
@@ -28,8 +28,8 @@
 ContentObject.prototype.sign=function(){var a=this.encodeObject(this.name),b=this.encodeObject(this.signedInfo),c=this.encodeContent(),d=new ArrayBuffer(a.length+b.length+c.length),d=new Uint8Array(d);d.set(a,0);d.set(b,a.length);d.set(c,a.length+b.length);4<LOG&&console.log("Signature Data is (binary) "+d);4<LOG&&console.log("Signature Data is (RawString)");4<LOG&&console.log(DataUtils.toString(d));a=new RSAKey;a.readPrivateKeyFromPEMString(globalKeyManager.privateKey);a=a.signByteArrayWithSHA256(d);
 4<LOG&&console.log("SIGNATURE SAVED IS");4<LOG&&console.log(a);4<LOG&&console.log(DataUtils.toNumbers(a.trim()));this.signature.signature=DataUtils.toNumbers(a.trim())};ContentObject.prototype.encodeObject=function(a){var b=new BinaryXMLEncoder;a.to_ccnb(b);return b.getReducedOstream()};ContentObject.prototype.encodeContent=function(){var a=new BinaryXMLEncoder;a.writeElement(CCNProtocolDTags.Content,this.content);return a.getReducedOstream()};
 ContentObject.prototype.saveRawData=function(a){this.rawSignatureData=a.subarray(this.startSIG,this.endSIG)};
-ContentObject.prototype.from_ccnb=function(a){a.readStartElement(this.getElementLabel());a.peekStartElement(CCNProtocolDTags.Signature)&&(this.signature=new Signature,this.signature.from_ccnb(a));this.startSIG=a.offset;this.name=new Name;this.name.from_ccnb(a);a.peekStartElement(CCNProtocolDTags.SignedInfo)&&(this.signedInfo=new SignedInfo,this.signedInfo.from_ccnb(a));this.content=a.readBinaryElement(CCNProtocolDTags.Content);this.endSIG=a.offset;a.readEndElement();this.saveRawData(a.istream)};
-ContentObject.prototype.to_ccnb=function(a){a.writeStartElement(this.getElementLabel());null!=this.signature&&this.signature.to_ccnb(a);this.startSIG=a.offset;null!=this.name&&this.name.to_ccnb(a);null!=this.signedInfo&&this.signedInfo.to_ccnb(a);a.writeElement(CCNProtocolDTags.Content,this.content);this.endSIG=a.offset;a.writeEndElement();this.saveRawData(a.ostream)};ContentObject.prototype.getElementLabel=function(){return CCNProtocolDTags.ContentObject};
+ContentObject.prototype.from_ccnb=function(a){a.readStartElement(this.getElementLabel());a.peekStartElement(CCNProtocolDTags.Signature)&&(this.signature=new Signature,this.signature.from_ccnb(a));this.startSIG=a.offset;this.name=new Name;this.name.from_ccnb(a);a.peekStartElement(CCNProtocolDTags.SignedInfo)&&(this.signedInfo=new SignedInfo,this.signedInfo.from_ccnb(a));this.content=null==a.peekTypeAndVal()?null:a.readBinaryElement(CCNProtocolDTags.Content);this.endSIG=a.offset;a.readEndElement();
+this.saveRawData(a.istream)};ContentObject.prototype.to_ccnb=function(a){a.writeStartElement(this.getElementLabel());null!=this.signature&&this.signature.to_ccnb(a);this.startSIG=a.offset;null!=this.name&&this.name.to_ccnb(a);null!=this.signedInfo&&this.signedInfo.to_ccnb(a);a.writeElement(CCNProtocolDTags.Content,this.content);this.endSIG=a.offset;a.writeEndElement();this.saveRawData(a.ostream)};ContentObject.prototype.getElementLabel=function(){return CCNProtocolDTags.ContentObject};
 var Signature=function(a,b,c){this.Witness=a;this.signature=b;this.digestAlgorithm=c};
 Signature.prototype.from_ccnb=function(a){a.readStartElement(this.getElementLabel());4<LOG&&console.log("STARTED DECODING SIGNATURE");a.peekStartElement(CCNProtocolDTags.DigestAlgorithm)&&(4<LOG&&console.log("DIGIEST ALGORITHM FOUND"),this.digestAlgorithm=a.readUTF8Element(CCNProtocolDTags.DigestAlgorithm));a.peekStartElement(CCNProtocolDTags.Witness)&&(4<LOG&&console.log("WITNESS FOUND"),this.Witness=a.readBinaryElement(CCNProtocolDTags.Witness));4<LOG&&console.log("SIGNATURE FOUND");this.signature=
 a.readBinaryElement(CCNProtocolDTags.SignatureBits);a.readEndElement()};
@@ -112,8 +112,8 @@
 Level.WARNING,g),Error("Cannot reset stream! "+g.getMessage(),g);}}return a};BinaryXMLDecoder.prototype.readBinaryElement=function(a,b){var c=null;this.readStartElement(a,b);return c=this.readBlob()};
 BinaryXMLDecoder.prototype.readEndElement=function(){4<LOG&&console.log("this.offset is "+this.offset);var a=this.istream[this.offset];this.offset++;4<LOG&&console.log("XML_CLOSE IS "+XML_CLOSE);4<LOG&&console.log("next is "+a);if(a!=XML_CLOSE)throw console.log("Expected end element, got: "+a),new ContentDecodingException(Error("Expected end element, got: "+a));};BinaryXMLDecoder.prototype.readUString=function(){var a=this.decodeUString();this.readEndElement();return a};
 BinaryXMLDecoder.prototype.readBlob=function(){var a=this.decodeBlob();this.readEndElement();return a};BinaryXMLDecoder.prototype.readDateTime=function(a){var a=this.readBinaryElement(a),a=DataUtils.toHex(a),a=parseInt(a,16),b=1E3*(a/4096);3<LOG&&console.log("DECODED DATE WITH VALUE");3<LOG&&console.log(b);b=new CCNTime(b);if(null==b)throw new ContentDecodingException(Error("Cannot parse timestamp: "+DataUtils.printHexBytes(a)));return b};
-BinaryXMLDecoder.prototype.decodeTypeAndVal=function(){var a=-1,b=0,c=!0;do{var d=this.istream[this.offset];if(0>d||0==d&&0==b)return null;(c=0==(d&XML_TT_NO_MORE))?(b<<=XML_REG_VAL_BITS,b|=d&XML_REG_VAL_MASK):(a=d&XML_TT_MASK,b<<=XML_TT_VAL_BITS,b|=d>>>XML_TT_BITS&XML_TT_VAL_MASK);this.offset++}while(c);3<LOG&&console.log("TYPE is "+a+" VAL is "+b);return new TypeAndVal(a,b)};BinaryXMLDecoder.peekTypeAndVal=function(){var a=null,b=this.offset;try{a=this.decodeTypeAndVal()}finally{this.offset=b}return a};
-BinaryXMLDecoder.prototype.decodeBlob=function(a){if(null==a)return a=this.decodeTypeAndVal(),a="string"==typeof a.val()?parseInt(a.val()):a.val(),this.decodeBlob(a);var b=this.istream.subarray(this.offset,this.offset+a);this.offset+=a;return b};
+BinaryXMLDecoder.prototype.decodeTypeAndVal=function(){var a=-1,b=0,c=!0;do{var d=this.istream[this.offset];if(0>d||0==d&&0==b)return null;(c=0==(d&XML_TT_NO_MORE))?(b<<=XML_REG_VAL_BITS,b|=d&XML_REG_VAL_MASK):(a=d&XML_TT_MASK,b<<=XML_TT_VAL_BITS,b|=d>>>XML_TT_BITS&XML_TT_VAL_MASK);this.offset++}while(c);3<LOG&&console.log("TYPE is "+a+" VAL is "+b);return new TypeAndVal(a,b)};
+BinaryXMLDecoder.prototype.peekTypeAndVal=function(){var a=null,b=this.offset;try{a=this.decodeTypeAndVal()}finally{this.offset=b}return a};BinaryXMLDecoder.prototype.decodeBlob=function(a){if(null==a)return a=this.decodeTypeAndVal(),a="string"==typeof a.val()?parseInt(a.val()):a.val(),this.decodeBlob(a);var b=this.istream.subarray(this.offset,this.offset+a);this.offset+=a;return b};
 BinaryXMLDecoder.prototype.decodeUString=function(a){if(null==a){var a=this.offset,b=this.decodeTypeAndVal();3<LOG&&console.log("TV is "+b);3<LOG&&console.log(b);3<LOG&&console.log("Type of TV is "+typeof b);return null==b||XML_UDATA!=b.type()?(this.offset=a,""):this.decodeUString(b.val())}a=this.decodeBlob(a);return DataUtils.toString(a)};TypeAndVal=function(a,b){this.t=a;this.v=b};TypeAndVal.prototype.type=function(){return this.t};TypeAndVal.prototype.val=function(){return this.v};
 BinaryXMLDecoder.prototype.readIntegerElement=function(a){4<LOG&&console.log("READING INTEGER "+a);4<LOG&&console.log("TYPE OF "+typeof a);a=this.readUTF8Element(a);return parseInt(a)};BinaryXMLDecoder.prototype.readUTF8Element=function(a,b){this.readStartElement(a,b);return this.readUString()};BinaryXMLDecoder.prototype.seek=function(a){this.offset=a};function ContentDecodingException(a){this.message=a.message;for(var b in a)this[b]=a[b]}ContentDecodingException.prototype=Error();
 ContentDecodingException.prototype.name="ContentDecodingException";var BinaryXMLStructureDecoder=function(){this.gotElementEnd=!1;this.level=this.offset=0;this.state=BinaryXMLStructureDecoder.READ_HEADER_OR_CLOSE;this.headerLength=0;this.useHeaderBuffer=!1;this.headerBuffer=new DynamicUint8Array(5);this.nBytesToRead=0};BinaryXMLStructureDecoder.READ_HEADER_OR_CLOSE=0;BinaryXMLStructureDecoder.READ_BYTES=1;