Settlement device, terminal, and electronic settlement program

Abstract

【Problem】To reduce security risks in electronic payment. 【Solution】The terminal device 1[q] includes an information acquisition unit 112 that acquires an offline token KY[q] associated with the user U[q] of the terminal device 1[q] and an encryption key KS[q] from the payment device 3, the offline token KY[q], a merchant identification token KZ that identifies the payment merchant related to the payment device 3, and a time encryption code TT[q] obtained by encrypting a terminal time value AG based on the terminal time TG which is the current time of the terminal device 1[q] with the encryption key KS[q]. The terminal device 1[q] further includes a display control unit 114 that causes the display device 13 to display an offline code image GY[q] based on these elements. 【Selected Drawing】Figure 12

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