METHOD AND SYSTEM FOR SAFELY DOWNLOADING TERMINAL MASTER KEY (TMR)

摘要

Disclosed is a method for safely downloading a terminal master key (TMK), comprising steps of a payment terminal generating a transmission key (TK); a supplier key management system performing transcryption on the TK and then sending the TK to the payment terminal; an operating terminal collecting the transcrypted TK and transferring the TK to a KMS system; the KMS system performing identity authentication with a payment system; and after the authentication succeeds, the KMS system sending the TMK to the payment terminal by using the operating terminal. The beneficial effects of the present invention are as follows: According to the present invention, both TK uploading and TMK downloading are performed by using the operating terminal, and the TMK downloading is directly subsequent to the step of the TK uploading, and the TMK downloading time efficiency is greatly improved.