In {TAIL ~ step} 203, {HEAD ~ the signature key generator} 123 uses a hashing function to generate a signature key for the fingerprint 
In
In { TAIL ~ step } 203 , { HEAD ~ the signature key generator } 123 uses a hashing function to generate a signature key for the fingerprint
REL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH