Create Bobj session using SSO ticket

Hello All,

I developed portal java program that creates new Infoview session using this code:

ISessionMgr smAnager = CrystalEnterprise.getSessionMgr();

IEnterpriseSession enterpriseSession = null;

enterpriseSession = smAnager.logon(username, password, cms, auth);

There is SSO between Sap portal and Bobj server .

Can I logon from the Portal java program to Bobj without user and password - Using the logon ticket (Cookie)?

Thanks

Nir