Electronic device for controlling electronic payment and method therefor

An electronic device comprising:

• a communication module;
• a display module;
• a memory;
• and
• a processor configured to be operatively connected to the communication module, the display module and the memory;
• wherein the memory stores instructions which, when executed, cause the processor to:
• perform a transaction with an external payment device through the communication module by using an application program for a payment;
• receive a transaction result including receipt information from a first external server through the communication module by using the application program;
• after the transaction result is received, control the display module to display the receipt information and object related to sharing or sending of the receipt information on a user interface of the application program;
• in response to a request for sharing or sending of the receipt information, encrypt the receipt information using a public key received from the first external server, generate a file for refund based on encrypted receipt information, and control the communication module to transmit the file to at least one external electronic device by using the application program;
• and
• in response to receiving a request for a refund, receive, from a second external server through the communication module by using the application program, information on the refund obtained according to a validity determination of the file by the second external server,
• wherein the validity determination of the file is determined by the second server when the external payment device requests the validity determination of the file to the second server via the first server,
• wherein the file is decrypted using the public key by the first server, and
• wherein the receipt information includes a transaction item and at least one of a transaction store, a transaction date, an approval number, a transaction quantity, or a transaction identifier (ID).

A computer-readable storage medium that stores a program including instructions for performing payment in an electronic device, comprising:

• performing a transaction with an external payment device through a communication module by using an application program for a payment;
• receiving a transaction result including receipt information from a first external server through the communication module by using the application program;
• in response to receiving a request for a refund using a user interface of the application program displayed on a display module, encrypting the receipt information using a public key received from the first external server, generating a file for refund based on the encrypted receipt information, and controlling the communication module to transmit the file to the external payment device by using the application program;
• and
• receiving from a second external server through the communication module by using the application program, information on the refund obtained according to a validity determination of the file by the second external server,
• wherein the validity determination of the file is determined by the second server when the external payment device requests the validity determination of the file to the second server via the first server,
• wherein the file is decrypted using the public key by the first server, and
• wherein the receipt information includes a transaction item and at least one of a transaction store, a transaction date, an approval number, a transaction quantity, or a transaction identifier (ID).