string File_Passwd_Authdigest::generatePassword ( 
    string $user
     , string $realm
     , string $pass
   )
Generate a password usable for "AuthDigest" authentication.
$user
     the username
$realm
     the realm the user is in
$pass
     the plaintext password
Returns string encrypted password.
File_Passwd_Authdigest::generatePassword()
<?php
require_once 'File/Passwd/Authdigest.php';
$pass = File_Passwd_Authdigest::generatePassword('mike', 'restricted', 'secret');
?>
   This function should be called statically.