Transaction certification system, management device and information processing program

摘要

PROBLEM TO BE SOLVED: To provide a transaction proof system, a management device and an information processing program which reduce the trouble of the purchaser in certifying the contents of transactions performed by the purchaser in the past. A transaction certification system 100 includes a transaction processing device and a management device. The transaction processing device includes an output means for readablely outputting encrypted data obtained by encrypting proof data including predetermined information for certifying an executed transaction by a first terminal device. The management device (receipt server 1) certifies the first acquisition means for acquiring encrypted data from the first terminal device, the second acquisition means for acquiring the user identifier that identifies the user requesting storage, and the certification. A storage means for associating data with a user identifier and storing it in a storage device, a third acquisition means for acquiring a user identifier for a user requesting certification, and an encrypted data or encrypted data obtained by encrypting the certification data. It is provided with a transmission means for transmitting to the terminal device of 1. [Selection diagram] Fig. 1