private static void getClientEntry( AuthenticationContext authContext ) throws KerberosException,
InvalidTicketException
{
KerberosPrincipal principal = KerberosUtils.getKerberosPrincipal(
authContext.getRequest().getKdcReqBody().getCName(), authContext.getRequest().getKdcReqBody().getRealm() );
PrincipalStore store = authContext.getStore();
PrincipalStoreEntry storeEntry = getEntry( principal, store, ErrorType.KDC_ERR_C_PRINCIPAL_UNKNOWN );
authContext.setClientEntry( storeEntry );
}