| 主权项 |
1. A method comprising:
receiving, by a server computer, from an access device associated with a merchant during a transaction, an authorization request message comprising an account number and encrypted additional data related to the transaction involving the merchant; requesting, by the server computer, authorization for the transaction by sending a request message to an issuer computer, wherein the request message comprises the account number included in the received authorization request message; decrypting, by the server computer, the encrypted additional data included in the authorization request message associated with the transaction; storing, by the server computer, the decrypted additional data associated with the transaction in a database; receiving, by the server computer, from the issuer computer, an authorization response message that indicates an authorization of the transaction; determining, by the server computer, that the merchant is eligible to receive the decrypted additional data associated with the transaction; based on determining that the merchant is eligible to receive the decrypted additional data associated with the transaction, modifying, by the server computer, the authorization response message by inserting the decrypted additional data into the authorization response message; and transmitting, by the server computer, the modified authorization response message inserted with the decrypted additional data to the access device. |
