Chapter 4 Application Development Information Automatic Certificate Update Feature This function automates registration and periodic updating of the security certificates registered to the printer. This reduces the burden on the user of tasks such as updating. Overview When printing from application software that uses Epson ePOS SDK for JavaScript, if using security communication (SSL/TLS communication), security certificates must be registered on the printer and updated periodically. Using this function automates the registration and periodic updates of security certificates so that users do not have to perform this task.
Use of this function requires the serial number of the connected printer to be entered. Web server Web application (Epson ePOS SDK for JavaScript) (3) DNS server IP address 4 (4) DNS Host name Host name/ IP address (2) (5) TCP (encryption) Communication Epson managed server Certificate (1) Automatic certificate update service Host name/IP address (1) The printer downloads a certificate from the Epson-managed server and sends the host name and IP address. (2) The Epson server sets the host name and IP address to the DNS. (3) The host device uses a browser and web application to print. (4) The host device acquires the IP address associated with the host name from the DNS.
(5) The host device uses TCP (encryption) communications with the printer to print. No personal information is acquired from the customer on the Epson-managed server side. 97