Common use of Authentication Phase Clause in Contracts

Authentication Phase. When user U wishes to login to the server, it must inserts its smart card to a card reader and inputs its username and password PW . Then the smart card and the server cooperate to perform the following steps as shown in Fig1. (Username, PW , Smartcard (R, a)) Server (s) 1. b ∈ Z * , V = bR + h(username)P , W = bh(h(PW a) username)P REQUEST (username,V ,W )

Authentication Phase. When user U wishes to login to the server, it must inserts its smart card to a card reader and inputs its username and password PW . Then the smart card and the server cooperate to perform the following steps as shown in Fig1. (Username, PW , Smartcard (R, a)) Server (s) 1. b ∈  Z * , V =  bR +  h(username)P , W =  bh(h(PW a) username)P REQUEST (username,V ,W )