Encrypting the communication with the CryptoBox webserver with SSL

This file describes how to encrypt your connection to the CryptoBox webserver.
This is highly recommended as the encryption password for your data could be
exposed to intruders in your local network otherwise.

There are two ways for setting up a SSL connection:
	- run the CryptoBox webserver behind an ssl-enabled webserver 
	- use stunnel to provide an SSL socket


1) CryptoBox behind an ssl-enabled webserver
	Read the documentation of your favourite webserver to learn how to enable
	ssl encryption.

	The CryptoBox webserver cannot detect whether the connection is encrypted
	or not  since it is behind the proxy webserver. Thus you have to tell the
	CryptoBox whether the connection is encrypted or not.

	for apache2:
		1) enable the 'headers' module (for debian: "a2enmod headers")
		2) add this line to your ssl-enabled virtualhost:
			RequestHeader set X-SSL-Request 1
		3) restart your webserver
	
	for lighthttpd:
		TODO


2) CryptoBox behind stunnel
	If you do not have an ssl certificate yet, then you should create it first.
	Please take a look into the "start_stunnel.sh" script. You may use it
	to create a certificate and dig a tunnel.

	In case, that you already have a certificate just run this command:

		stunnel -p "$YOUR_CERT_FILE" -r localhost:80 -d 443
	
	Maybe you should add this to your bootup scripts.


3) Problems with SSL detection?
	If the CryptoBox continues to complain about the unencrypted connection, even
	if it runs behind an ssl-enabled webserver or behind stunnel, then you can do
	one of the following things:
		- set the request header value "X-SSL-Request" to "1" (one)
		- set the environment setting "HTTPS" to a non-empty value during the
		  startup of the CryptoBox webserver. Maybe /etc/default/cryptobox-server
		  would be the right place for this.
		- let the CryptoBox webserver listen to port 443