Shenzhen Zolon Technology Co., Ltd.

Saifeng Deng

Chuanxi Wang

Dong Zhou

Zhenwei Sun

A method for upgrading a certificate of a POS terminal, a server, a POS terminal and a terminal device are provided, this method includes: performing a mutual authentication with the POS terminal when receiving a certificate upgrading request sent from the POS terminal; and encapsulating the certificate to be upgraded in a preset proprietary protocol format to obtain update data, using a session key to encrypt the update data to obtain a ciphertext and sending the ciphertext to the POS terminal, after the mutual authentication is passed. According to the present application, a problem that it is inconvenient to use the existing certificate update methods, much time needs to be consumed, and transportation cost is increased may be solved.

Growing community of inventors

Guangdong, China

Saifeng Deng