A device 23 wherein the second pseudorandom encoding sequence includes an arrangement of {TAIL ~ characters} from {HEAD ~ the same or different character} set to the first secret key 
A device 23 wherein the second pseudorandom encoding sequence includes an arrangement of { TAIL ~ characters } from { HEAD ~ the same or different character } set to the first secret key
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH