Character display method and system as well as electronic signature device

Abstract

The invention provides a character display method and system as well as an electronic signature device. The method comprises the steps that the electronic signature device is subjected to power-on initialization and accesses a terminal; the terminal waits for receiving an instruction sent by the electronic signature device; and when the instruction received by the terminal is a character data acquisition request instruction, whether a character data set containing character data corresponding to a to-be-displayed character and signature data corresponding to the character data set exist in a storage region or not is judged, if the character data set and the signature data do not exist, a font library acquisition request is sent to the initialized device to acquire a font library, if the character data set and the signature data exist, the character data set containing the character data corresponding to the to-be-displayed character and the signature data corresponding to the character data set are selected out according to the character data acquisition request instruction and sent to the electronic signature device, the electronic signature device verifies the signature data by utilizing a verification key, and the to-be-displayed character is displayed according to the selected character data after the verification is passed.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method, system and electronic signature device for displaying characters. Background technique [0002] In traditional smart key devices (such as USBKEY), characters (including Chinese characters, numbers, letters, symbols, etc.) are represented, exchanged and processed in the form of internal codes. When a character needs to be displayed, the electronic signature device converts the internal code of the character to be displayed into an area code, uses the area code to extract the font of the character to be displayed from the font library stored in the electronic signature device, and then displays it on the screen according to the font information. to display the characters. The character model is the corresponding code when the character is displayed on the dot matrix. To store graphics or text in the form of fonts, each point requires a bit to store, a bit of 0 means...

AI Technical Summary

Problems solved by technology

The memory of the security chip in the general electronic signature device cannot meet the demand for storing such a large font. Therefore, most of them use a memory extended outside the security chip to store the font.

However, expanding a memory outside the security chip to store fonts will increase the cost of electronic signature equipment

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