AUTHENTICATION SYSTEM, AND REMOTELY DISTRIBUTED STORAGE SYSTEM

摘要

An authentication system wherein a terminal apparatus (1) uses a master key generator (36) to generate, based on an input password and a predetermined calculation, a value MK, and further uses an authentication result judging part (37) to calculate, from the value MK, values V1 and V2, and wherein the terminal apparatus (1) transmits the value V1 to a server (2). The server (2) uses a master key generator (45) to generates, based on a password of server registration of the terminal apparatus (1) shared and stored in advance through safe communication means and based on a predetermined calculation, a value MK, and further uses an authentication result judging part (46) to calculate, from the value MK, values V1 and V2. The server (2) transmits the value V2 to the terminal apparatus (1). Mutual authentications are performed dependently on whether these values can be calculated based on the predetermined calculations.