The University of SydneyPage 9Recap of Week 6
User initiates loginDistributes one of the pre-generated KeyMapsSMS with KeyMap
Authentication -success or fail18
46
Telco Service Providers3User enters their one time letter code5User initiates authentication entering the client or user ID.2Compares hash of the expectedlettercode withthe expected result 7
1=P, 3=R, 5=L, 7=ZUser enciphers their PIN using the KeyMap-There is a PIN registration phase with TokenOne, that generated 10000 KeyMaps-TokenOneonly stores hashes of expected outcomes