hi kalik, After a long pause, I've successfully done my authorization of my radius server by using digest and perl authentication in mixed mode, as per your advice I put the digest entry first before the perl authentication in the default file, and after that I've put a line of perl code RAD_CHECK{'Cleartext-Password'} = $mypassword, where the password is fetch from the database. And finally the server starts reading the cleartext password and starts calculating the md5 encryption and sucessfully authorized a user. Lastly, I thank to all the members of this forum who are dedicated here to help solving the complex problem in a complicated environment, especially Evan Kalik who is much envolved, regarding my problems of not getting my digest attributes. Thanking you for your valuable time and consideration. With Regards, Johnson Elangbam