Sj definition
Examples of Sj in a sentence
Step 1: Sj submits it’s identifier SIDj to GWN through a secure channel.
By ta-weak graded validity of protocol Πmax{ta,ts}, party Pj sets bij := Πmax{ta,ts}(i) ∈ {v, 𝖳} for each honest party Pi. Therefore, GC1−v GC #Sj ≤ ta < n − ts − ta ≤ n − ts (so that party Pj does not output 1 − v),but also j j (#Sv ≥ n − ts − #S1−v ≥ n − ts − ta j j #(S1−v ⊔ U 1−v) ≤ ta so that party Pj outputs v.
The function f should reflect the preference in the labels (e.g., if yi > yj , then Si > Sj )).
Then, attacker could get { H(·), g, PTCi, PUGWN-U } from the smart card and { PUi, DIDi, Ci}, {DIDi, PUi, CGWN}, {SIDj, PUj, Cj, Cij} and {SIDj, PUj, Cij, EGWN} from the intercepted messages among Ui, GWN and Sj. There is only way that the attacker could get the session key KEYij by knowing ▇▇ or Kj from PUi and PUj, respectively.
If E *=E and C *=C , U can confirm that both Sj and GWN are legitimate.