Setting up HTTP Basic Authorisation

[T Gillett]

I am trying to set up HTTP Basic Authentication for nginx on my NSLU2 running
Unslung 6.8. 

To test I have added the auth-basic lines to the nginx.conf file to control
access to php files as follows:

#proxy php-fcgi
        location ~ \.php$ {
            fastcgi_pass   127.0.0.1:9009;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /opt/share/www/php/$fastcgi_script_name;
            fastcgi_param  QUERY_STRING     $query_string;
            fastcgi_param  REQUEST_METHOD   $request_method;
            fastcgi_param  CONTENT_TYPE     $content_type;
            fastcgi_param  CONTENT_LENGTH   $content_length;
	     auth_basic "Restricted";
            auth_basic_user_file conf/htpasswd;

With the auth-basic lines commented out, I can access the php pages OK. 
With the lines in place, I get the login dialog box as expected, but when I
login, all that happens is that the login box is refreshed.

Two entries are created in the host.access.log showing the attempted access.
There is no entry in the error.log

I think I am just missing some basic step in setting this up.

Is the htpassword file correct?
Is the encryption of the password correct?

Any suggestions / help appreciated

thanks
Terry

************************************************
The htpassword file for the user account “test” is as follows:
	test:cgsk91HyOZHGE
(the password is “test”)

The entries in the host.access.log is as follows:

192.168.1.25 - - [06/Dec/2006:20:27:32 +1000] GET /hello.php HTTP/1.1
Status"401" Bytes195 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
rv:1.8.0.8) Gecko/20061025 Firefox/1.5.0.8" "-"

192.168.1.25 - test [06/Dec/2006:20:27:40 +1000] GET /hello.php HTTP/1.1
Status"401" Bytes195 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
rv:1.8.0.8) Gecko/20061025 Firefox/1.5.0.8" "-"