Password Update Sample Clauses

Password Update. Step 1: A user keys his password PWi, the card reader computes αi = h(▇▇▇▇, TIDi, Xk) = Ai ⊕ h(DIDi ⊕ PWRi) and then computes PWRnew = h(PWi, r), Regnew = h(DIDi, PWRnew ), Anew = αi ⊕ h(DIDi ⊕ PWRnew ). Step 2: The card reader stores the new computed values {Regnew, Anew} instead of the old values {Regi, Ai}.