private String calcSessionId()
	{
		try
		{
			MessageDigest md = null;
			SecureRandom random = new SecureRandom();
			
			BigInteger baseCode	= BigInteger.valueOf(System.nanoTime() * random.nextLong());
			BigDecimal extCode	= new BigDecimal(random.nextGaussian());
			
			baseCode = baseCode.xor(extCode.toBigInteger());
			
			byte[] base = baseCode.toByteArray();
			byte[] hash;
			
			md = MessageDigest.getInstance("SHA1");
			
			md.reset();
			md.update(base);
			hash = md.digest();
			md = null;
			
			StringBuffer resultString = new StringBuffer();
			
			for(int i = 0; i < hash.length; i++)
				resultString.append(Integer.toHexString(0xF0 & hash[i]).charAt(0));
			
			return resultString.toString();
		}
		catch (NoSuchAlgorithmException e)
		{
			System.out.println("WTF? Cannot find SHA1 Hash-Algorithm.");
		}
		
		return "";
	}