Security definitions class. This class is used for instantiate a singleton object for security definitions.
$security :
$array :
$userTypes :
$ldapHosts :
singleton()
getTimeout()
getHash()
encryptOnClient()
userTypeExists( $name)
getUserType( $name = FALSE)
getLdapHost( $id = FALSE)
ldapExists( $host)
allowRegister( $name)
__construct()