diff --git a/src/Signature.js b/src/Signature.js
new file mode 100644
index 0000000..d4c3fa4
--- /dev/null
+++ b/src/Signature.js
@@ -0,0 +1,58 @@
+var CCNProtocolDTags = require('./CCNProtocolDTags').CCNProtocolDTags;
+
+
+var Signature = function Signature(_Witness,_Signature,_DigestAlgorithm) {
+	
+    this.Witness = _Witness;//byte [] _witness;
+	this.Signature = _Signature;//byte [] _signature;
+	this.DigestAlgorithm = _DigestAlgorithm//String _digestAlgorithm;
+};
+
+exports.Signature = Signature;
+
+
+Signature.prototype.decode =function( decoder) {
+		decoder.readStartElement(this.getElementLabel());
+		if (decoder.peekStartElement(CCNProtocolDTags.DigestAlgorithm)) {
+			this.DigestAlgorithm = decoder.readUTF8Element(CCNProtocolDTags.DigestAlgorithm); 
+		}
+		if (decoder.peekStartElement(CCNProtocolDTags.Witness)) {
+			this.Witness = decoder.readBinaryElement(CCNProtocolDTags.Witness); 
+		}
+		this.Signature = decoder.readBinaryElement(CCNProtocolDTags.SignatureBits);	
+		decoder.readEndElement();
+	
+};
+
+
+exports.Signature = Signature;
+
+Signature.prototype.encode= function( encoder){
+    	
+	if (!this.validate()) {
+		throw new Exception("Cannot encode: field values missing.");
+	}
+	
+	encoder.writeStartElement(this.getElementLabel());
+	
+	if ((null != this.DigestAlgorithm) && (!this.DigestAlgorithm.equals(CCNDigestHelper.DEFAULT_DIGEST_ALGORITHM))) {
+		encoder.writeElement(CCNProtocolDTags.DigestAlgorithm, OIDLookup.getDigestOID(this.DigestAlgorithm));
+	}
+	
+	if (null != this.Witness) {
+		// needs to handle null witness
+		encoder.writeElement(CCNProtocolDTags.Witness, this.Witness);
+	}
+
+	encoder.writeElement(CCNProtocolDTags.SignatureBits, this.Signature);
+
+	encoder.writeEndElement();   		
+};
+
+Signature.prototype.getElementLabel = function() { return CCNProtocolDTags.Signature; };
+
+
+Signature.prototype.validate = function() {
+		return null != this.Signature;
+};
+