Patent ID: 9047603
Filing Date: 2015-06-02
Classification: G06Q

Abstract:
1. An electronic transaction system, connected to a transaction terminal and a certification mobile terminal through a network and performing transactions according to a user request, comprising: a transaction terminal configured to perform a transaction according to a request from a user; a service providing server configured to: transmit a message, to the certification mobile terminal using the mobile phone number, receive a response to the message from the mobile terminal and in response to the received message, match the mobile phone number to the transaction history and provide the transaction history to the mobile terminal; receive a digitally signed version of the transmitted transaction history and digitally signed user information from the mobile terminal, verify the received digitally signed transaction history using a public key of the certification mobile terminal, and verify the digitally signed user information using the public key and the received user information for the selected certification method from the transaction terminal; and provide a service corresponding to the transaction to the transaction terminal after the digitally signed version of the transmitted transaction history and digitally signed user information is verified.