diff --git a/src/PublisherID.js b/src/PublisherID.js
new file mode 100644
index 0000000..26009da
--- /dev/null
+++ b/src/PublisherID.js
@@ -0,0 +1,76 @@
+var CCNProtocolDTags = require('./CCNProtocolDTags').CCNProtocolDTags;
+
+
+var PublisherType = function PublisherType(_tag){
+    	this.KEY =(CCNProtocolDTags.PublisherPublicKeyDigest);
+    	this.CERTIFICATE= (CCNProtocolDTags.PublisherCertificateDigest);
+    	this.ISSUER_KEY=	(CCNProtocolDTags.PublisherIssuerKeyDigest);
+    	this.ISSUER_CERTIFICATE	=(CCNProtocolDTags.PublisherIssuerCertificateDigest);
+
+    	this.Tag = _tag;
+}; exports.PublisherType = PublisherType;
+
+PublisherType.prototype.isTypeTagVal = function(tagVal) {
+		if ((tagVal == CCNProtocolDTags.PublisherPublicKeyDigest) ||
+			(tagVal == CCNProtocolDTags.PublisherCertificateDigest) ||
+			(tagVal == CCNProtocolDTags.PublisherIssuerKeyDigest) ||
+			(tagVal == CCNProtocolDTags.PublisherIssuerCertificateDigest)) {
+			return true;
+		}
+		return false;
+};
+
+
+var PublisherID = function PublisherID() {
+
+	this.PUBLISHER_ID_DIGEST_ALGORITHM = "SHA-256";
+	this.PUBLISHER_ID_LEN = 256/8;
+    
+    
+    this.PublisherID = generatePublicKeyDigest(key);//ByteArray
+    //CryptoUtil.generateKeyID(PUBLISHER_ID_DIGEST_ALGORITHM, key);
+    this.PublisherType = isIssuer ? PublisherType.ISSUER_KEY : PublisherType.KEY;//publisher Type
+    
+};
+
+exports.PublisherID = PublisherID;
+
+PublisherID.prototype.decode = function(decoder) {
+		
+		// We have a choice here of one of 4 binary element types.
+		var nextTag = decoder.peekStartElementAsLong();
+		
+		if (null == nextTag) {
+			throw new Exception("Cannot parse publisher ID.");
+		} 
+		
+		this.PublisherType = new PublisherType(nextTag); 
+		
+		if (!this.PublisherType.isTypeTagVal(nextTag)) {
+			throw new Exception("Invalid publisher ID, got unexpected type: " + nextTag);
+		}
+		this.PublisherID = decoder.readBinaryElement(nextTag);
+		if (null == _publisherID) {
+			throw new ContentDecodingException("Cannot parse publisher ID of type : " + nextTag + ".");
+		}
+};
+
+PublisherID.prototype.encode = function(encoder) {
+	if (!this.validate()) {
+		throw new Exception("Cannot encode " + this.getClass().getName() + ": field values missing.");
+	}
+
+	encoder.writeElement(this.getElementLabel(), this.PublisherID);
+};
+	
+PublisherID.prototype.getElementLabel = function() { 
+	return this.PublisherType.Tag;
+};
+
+	
+PublisherID.prototype.validate = function(){
+	return ((null != id() && (null != type())));
+};
+
+
+