We have configured the use of X.509 certificates for SSO in numerous ABAP systems. For us, this involved using a unique IS in the subject line (CN=xxxxxxx) of the certificate. We then mapped that unique ID to the SAP login ID in the USREXTID table.
I don't see such a way of doing this for a J2EE only application. We have a portal(NW04s w/Portal) that we'd like to implement X.509's. How do we create a mapping table to accomplish the same thing that we do on the ABAP side?