unable to locate Destination Service API

hello all,

i need to use the following packages in my JCo programme:

com.sap.security.core.server.destinations.api.DestinationService;

com.sap.security.core.server.destinations.api.Destination;

com.sap.security.core.server.destinations.api.DestinationException;

com.sap.security.core.server.destinations.api.HTTPDestination;

com.sap.security.core.server.destinations.api.RFCDestination;

But m unable to find the plugin/ jar file where these packages are included.

i need to get them at the earliest.

Promt reply is much awaited .

please help.

Deep Regards,

Viren Gupta