公开(公告)号：US12126737B2

公开(公告)日：2024-10-22

申请号：US17770131

申请日：2019-10-08

申请人： PAX COMPUTER TECHNOLOGY (SHENZHEN) CO., LTD.

发明人： Lijun Li ,  Rongshou Peng

IPC分类号： H04L9/32 ,  H04L9/06

CPC分类号： H04L9/3268 ,  H04L9/0618 ,  H04L9/3213 ,  H04L9/3226

摘要： The present application provides methods for downloading a key, a client, a password device, and a terminal device, in which, the client sends a request for downloading an initial key to a backend server, and receives a server identity certificate delivered by the backend server and forwards the server identity certificate to the password device. The client acquires a device identity ciphertext returned by the password device and sends the device identity ciphertext to the backend server. The client acquires a server identity ciphertext and an initial key ciphertext generated by the backend server, and sends the server identity ciphertext to the password device. After the password device successfully verifies an identity of the backend server, the client sends the initial key ciphertext to the password device.

公开(公告)号：US20180276664A1

公开(公告)日：2018-09-27

申请号：US15556647

申请日：2016-12-30

申请人： PAX COMPUTER TECHNOLOGY (SHENZHEN) CO.,LTD.

发明人： Rongshou Peng ,  Yang Li ,  Qin Tang

IPC分类号： G06Q20/38 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32 ,  H04L9/30 ,  H04L29/06 ,  G06Q20/20

CPC分类号： G06Q20/3829 ,  G06Q20/202 ,  G06Q20/206 ,  G06Q2220/00 ,  H04L9/0819 ,  H04L9/14 ,  H04L9/30 ,  H04L9/3213 ,  H04L9/3268 ,  H04L9/3273 ,  H04L63/06 ,  H04L63/062 ,  H04L63/0823 ,  H04L63/083 ,  H04L2463/102

摘要： A key download method for a POS terminal, comprising: setting a device authentication key pair and a device encryption key pair in the POS terminal during a production or maintenance phase of the POS terminal; according to a remote authentication key pair set by a remote key server and the device authentication key pair of the POS terminal, the POS terminal and the remote key server authenticating each other; after the authentication succeeds, bounding a certificate of the remote key server to the POS terminal device; according to the device encryption key pair and a temporary transmission key, the POS terminal downloading the master key from the remote key server. The above method can download the master key through a network outside a security center, the security is high, the transportation cost can be saved, and the efficiency is high.