Intranet-extranet physical isolation high-safety data exchange method based on two-dimensional code

Abstract

The invention relates to the technical field of information security, in particular to an intranet-extranet physical isolation high-safety data exchange method based on a two-dimensional code. When data is exchanged from an intranet to an extranet, the method comprises the following steps of 1.1.extracting data to be exchanged in an intranet database, encrypting the data through a key and encodingthe data to generate a plurality of two-dimensional code images, and regularly arranging and displaying the images on a display screen of intranet system terminal equipment in a form of a two-dimensional code matrix; 1.2.acquiring the matrix-type regularly arranged two-dimensional code images displayed on the display screen of the intranet system terminal equipment through a camera of extranet system terminal equipment; and 1.3.decoding and decrypting an acquired two-dimensional code sequence on the extranet system terminal equipment through parallel calculation, signing the decrypted data, and finally obtaining exchange data.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a two-dimensional code-based high-security data exchange method for physical isolation of internal and external networks. Background technique [0002] With the development of society, more and more attention has been paid to the informatization construction of various industries. In the process of informatization construction, for security reasons, government or enterprise networks often require the isolation of internal and external networks, but the exchange of external data is unavoidable and very important. The traditional method is to use the gatekeeper for data exchange, although this can improve automatic wake-up, but the construction cost is relatively high; and the way of generating intermediate files to disk or copying with a USB disk greatly reduces work efficiency, especially when real-time In the case of data exchange, it will affect the normal work. ...

AI Technical Summary

Problems solved by technology

Two-dimensional code technology is widely used in forms, business cards, information query, tracking, inventory, etc., but it is rarely used in the field of government or enterprise intranet data exchange because of its limited storage capacity. In the case of large volume and high real-time requirements, the exchange efficiency will be greatly affected

[0004] Chinese patent CN103268461A discloses a two-dimensional code-based physical isolation data exchange method for internal and external networks. The acquisition of QR code, if the acquisition signal at the camera is attacked, there is still the possibility of data leakage