In some embodiments the reader may use the ID to help identify the proper signing authority, or may use the ID to help identify {HEAD ~ which SAPK} to use from {TAIL ~ a given signing authority} 
to use from
In some embodiments the reader may use the ID to help identify the proper signing authority , or may use the ID to help identify { HEAD ~ which SAPK } to use from { TAIL ~ a given signing authority }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL