yppasswd, secure passwords and OSF1/Alphas

Hi, this regards a local network with OSF1/Alpha (soon Tru64unix) and Linux. We presently use basically an old patched/rewritten yppasswd on Alpha which ensures that the passwords are of high security. But this home-made old yppasswd don't run under Linux. Therefore we look for a better solution to have a unified yppasswd on both systems. Using PAM under OSF1 is -- as far as I know -- not possible. And a skript on Alpha pointing to Linux (PAM) is not the solution I hope for (we do so presently the otherway round). Tobias