diff --git a/src/packet/openpgp.packet.compressed.js b/src/packet/openpgp.packet.compressed.js
index e02ee4da..9dcfec27 100644
--- a/src/packet/openpgp.packet.compressed.js
+++ b/src/packet/openpgp.packet.compressed.js
@@ -25,9 +25,14 @@
  * a Signature or One-Pass Signature packet, and contains a literal data
  * packet.
  */   
-function openpgp_packet_compressed() {
+function openpgp_packet_compressed(bytes) {
 	this.tagType = 8;
 	this.decompressedData = null;
+	this.compressedData = null;
+	this.type = 0;
+
+	if(bytes != undefined)
+		this.read(bytes);
 	
 	/**
 	 * Parsing function for the packet.
@@ -46,6 +51,21 @@ function openpgp_packet_compressed() {
 		this.compressedData = input.substring(position+1, position+len);
 		return this;
 	}
+
+	this.read = function(bytes) {
+		this.type = input.charCodeAt(mypos++);
+		this.compressedData = input.substring(position+1, position+len);
+		this.decompressedData = null;
+	}
+	
+	this.write = function() {
+		if(this.compressedData == null)
+			this.compress();
+
+		return String.fromCharCode(this.type) + this.compress();
+	}
+
+
 	/**
 	 * Decompression method for decompressing the compressed data
 	 * read by read_packet
@@ -104,9 +124,7 @@ function openpgp_packet_compressed() {
 	 * @param {String} data Data to be compressed
 	 * @return {String} The compressed data stored in attribute compressedData
 	 */
-	function compress(type, data) {
-		this.type = type;
-		this.decompressedData = data;
+	function compress() {
 		switch (this.type) {
 		case 0: // - Uncompressed
 			this.compressedData = this.decompressedData;
diff --git a/src/packet/openpgp.packet.encrypteddata.js b/src/packet/openpgp.packet.encrypteddata.js
index be31467e..22cce82c 100644
--- a/src/packet/openpgp.packet.encrypteddata.js
+++ b/src/packet/openpgp.packet.encrypteddata.js
@@ -50,6 +50,15 @@ function openpgp_packet_encrypteddata() {
 		return this;
 	}
 
+	this.read = function(bytes) {
+		this.encryptedData = bytes;
+		this.decryptedData = null;
+	}
+
+	this.write = function() {
+		return this.encryptedData;
+	}
+
 	/**
 	 * Symmetrically decrypt the packet data
 	 * 
@@ -68,6 +77,11 @@ function openpgp_packet_encrypteddata() {
 		return this.decryptedData;
 	}
 
+	this.encrypt = function(algo, key) {
+		this.encryptedData = openpgp_crypto_symmetricEncrypt(
+				openpgp_crypto_getPrefixRandom(algo), algo, key, this.decryptedData, true);
+	}
+
 	/**
 	 * Creates a string representation of the packet
 	 * 
diff --git a/src/packet/openpgp.packet.js b/src/packet/openpgp.packet.js
index cefb838e..36f84449 100644
--- a/src/packet/openpgp.packet.js
+++ b/src/packet/openpgp.packet.js
@@ -402,6 +402,32 @@ function _openpgp_packet() {
 	}
 
 	this.read_packet = read_packet;
+
+
+	/**
+	 * @enum {Integer}
+	 * A list of packet type and numeric tags associated with them.
+	 */
+	this.type = {
+		reserved: 0,
+		public_key_encrypted_session_key: 1,
+		signature: 2,
+		symmetric_key_encrypted_session_key: 3,
+		one_pass_signature: 4,
+		secret_key: 5,
+		public_key: 6,
+		secret_subkey: 7,
+		compressed: 8,
+		symmetrically_encrypted_data: 9,
+		marker: 10,
+		literal: 11,
+		trust: 12,
+		userid: 13,
+		public_subkey: 14,
+		user_attribute: 17,
+		sym_encrypted_and_integrity_protected_data: 18,
+		modification_detection_code: 19
+	};
 }
 
 var openpgp_packet = new _openpgp_packet();
diff --git a/src/packet/openpgp.packetlist.js b/src/packet/openpgp.packetlist.js
new file mode 100644
index 00000000..ff113873
--- /dev/null
+++ b/src/packet/openpgp.packetlist.js
@@ -0,0 +1,40 @@
+
+
+/**
+ * @class
+ * @classdesc This class represents a list of openpgp packets.
+ */
+function openpgp_packetlist(bytes) {
+
+	/** @type {openpgp_packet_[]} A list of packets */
+	this.list = []
+
+
+	/**
+	 * Reads a stream of binary data and interprents it as a list of packets.
+	 * @param {openpgp_bytearray} An array of bytes.
+	 */
+	this.read = function(bytes) {
+		var i = 0;
+
+		while(i < bytes.length) {
+			var packet = openpgp_packet.read_packet(bytes, i, bytes.length - i);
+			i += packet.headerLength + packet.packetLength;
+
+			list.push(packet);
+		}
+	}
+
+	/**
+	 * Creates a binary representation of openpgp objects contained within the
+	 * class instance.
+	 * @returns {openpgp_bytearray} An array of bytes containing valid openpgp packets.
+	 */
+	this.write = function() {
+		var bytes = '';
+
+		for(var i in this.list) {
+			bytes += openpgp_packet.write_header
+	}
+
+}