Creating a secure channel

using System;
using VSSProtocol.DataLayer;
using VSSProtocol.Session;
using VSSProtocol.Suits;
using VSSProtocol.Users;
using VSSProtocol.Utils;

namespace VSSProtocol.States
{
	internal class ServerKeyExchangeState : IState
	{
		/// <summary>
		/// Assets collected during the hello state.
		/// </summary>
		private readonly Assets assets;
		/// <summary>
		/// Chosen suit by the server.
		/// </summary>
		private readonly Suit chosenSuit;


		public ServerKeyExchangeState(Assets assets, Suit chosenSuit)
		{
			if (assets == null) throw new ArgumentNullException("assets");

			this.assets = assets;
			this.chosenSuit = chosenSuit;
		}

		#region IState Members

		/// <summary>
		/// Process connection and decide what to do according to data read from the connection.
		/// </summary>
		/// <param name="context">States are part of a VSS Protocol user class.</param>
		public void Process(VsspManager context)
		{
			if (context == null) throw new ArgumentNullException("context");
			DataLayerService dataLayerService = context.DataLayer;

			// Recieve from client encrypted premaster key.
			byte[] receivedMessage;
			DataPacket p = dataLayerService.ReceiveMessage(out receivedMessage);
			byte[] encryptedPreMaster = p.Data;
			// Decrypt it.
			IAsymmetricAlgorithm asym = 
				SessionFactory.CreateAsymetricAlgorithmFromSuit(chosenSuit, assets.ServerCertificate);
			byte[] decryptedPreMaster = asym.Decrypt(encryptedPreMaster); //TODO change
			// Now build the suit.
			ISession session = SessionFactory.CreateSessionFromSuit(chosenSuit, assets, ref decryptedPreMaster);
			context.Session = session;

			// Update messages that were sent and retreived.
			context.MessagesReceived.Add(receivedMessage);

			// Now move to the next state.
			MacState macState = new MacState();
			context.CurrentState = macState;
		}

		#endregion
	}
}