Pass Domino pswd to AS/400 through LCConnection?

We are accessing an AS/400 database from Domino web client, using LCConnection class. The AS/400 tables are secured with the same usernames and passwords we use for Domino. Is there a way to log on to the AS/400 tables from the backend by simply passing the Domino pswd that the user entered to log on? I know there is no way to store or access the encrypted password from Domino, but is there a userID property or something that can be passed? As a workaround, we are storing the AS/400 passwords in a separate database and accessing it when we do the “LcConnection.password = …” call, which works, but there must be a better way to do this which doesn’t require double maintenance. Any help is appreciated. Thank you.- Marty M.

Subject: pass Domino pswd to AS/400 through LCConnection?

the AS/400 database is iseries, btw. We have version 6.5 Domino server. Is there a single sign-on feature that can be activated, so that the Domino password is passed to iseries?