Online/offline invoicing automatic switching method based on password key
A technology for issuing invoices and automatic switching, which is applied in the fields of computer, network and information security to ensure scalability and loose coupling.
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[0020] The workflow of the system can be found in the appendix figure 2 , the specific implementation steps are as follows:
[0021] (1) First, the tax bureau-side network invoice control system issues a smart password key for each online billing taxpayer, and writes it into the billing control file, ticket number resource file, taxpayer identity information, key information, etc.; The password key is connected to the USB interface of a computer that can be connected to the Internet, and the dedicated network invoice client software developed by the tax bureau is installed on the computer to form an online invoice taxpayer-end invoicing platform;
[0022] (2) When the online invoice client software issues invoices, it first automatically judges the availability of the server system through the handshake Web service program;
[0023] (3) When the online invoice client software is in the state of issuing invoices online, it first automatically queries the update flags of the s...
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