well point is if at dba side it changes, code should be dynamic to take decision on it;s own.
so asking administrator , definitely now, tomorrow he would say configuration changed.
well let me point out here there are option ..ENCRYPTION on sp_con_props where u can set password encryption and still logon with both encrypted and plain password.
ditch is later sybase gave other option in which he said to logon with only with encrypted password and plain would be rejected