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|1. (WO2018103166) METHOD AND DEVICE FOR DOWNLOADING KEY OF POS TERMINAL|
|Applicants:||PAX COMPUTER TECHNOLOGY (SHENZHEN) CO., LTD.
|Title:||METHOD AND DEVICE FOR DOWNLOADING KEY OF POS TERMINAL|
A method for downloading a key of a POS terminal, comprising: in a production or maintenance stage of a POS terminal, setting a device authentication key pair and a device encryption key pair at the POS terminal; according to a remote authentication key pair set by a remote key server and the device authentication key pair in the POS terminal, the POS terminal and the remote key server performing mutual authentication, and after the authentication is passed, binding a certificate of the remote key server at the POS terminal device; and the POS terminal downloading a master key from the remote key server according to the device encryption key pair and a temporary transfer key. By means of the method, a master key can be downloaded through a network outside a security centre, having high security, being able to save on transportation costs and having high efficiency.