A framework is provided that decouples {HEAD ~ credential acquisition} from {TAIL ~ authentication processes} using those credentials in a way that facilitates dynamic update of credential information 
A framework is provided that decouples { HEAD ~ credential acquisition } from { TAIL ~ authentication processes } using those credentials in a way that facilitates dynamic update of credential information
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH