Step  End Entity                       PKI
 --------------------------------------------------------------------
 1   Format genm
 2                  -> genm     ->
 3                                 Handle genm
 4                                 delay in response is necessary
 5                                 Format error message "waiting"
                                   with certReqId set to -1 
 6                   <- error   <-
 7   Process error                    
 8   Format pollReq 
 9                   -> pollReq ->
 10                                Check status of original request
                                   general message response not ready
 11                                Format pollRep
 12                  <- pollRep <-
 13  Wait
 14  Format pollReq
 15                  -> pollReq ->
 16                                Check status of original request
                                   general message response is ready
 17                                Format genp
 18                  <- genp    <-
 19  Handle genp