From Facebook Developer Wiki

[edit] sig An MD5 hash of the current request and your secret key

Can someone give me example?? is it correct below?

sig = MD5Hash("api.facebook.com/restserver.php?api_key=MYAPIKEY&v=1.0&method=facebook.auth.createToken&secret_key=MYSECRET");

-- Frank 16:14 June 4, 2009 EST

You can find an example at How Facebook Authenticates Your Application. Pete (563683308 14:00, 5 June 2009 (PDT))