Right control system and control method for computer-aided design (CAD) graph entity

Abstract

The invention discloses a right control system for a computer-aided design (CAD) graph entity. The system comprises an anti-tamper module, a hard authorization module and a soft authorization module, wherein the anti-tamper module is used for performing protection control on an entity in a protected graph; the hard authorization module is used for binding the number of a sublock and the graph, so that the encrypted graph can be automatically authorized and authenticated on a machine inserted with the corresponding sublock; and the soft authorization module is used for acquiring a hardware code of the machine according to a self-defined algorithm, binding the hardware code and the graph, transmitting the encrypted graph to a graph using party, and finishing authorization after the graph using party opens the graph. The invention also discloses a right control method for the CAD graph entity. An outgoing CAD graph file can be controlled to be used within a preset range; the right of most of operation such as entity deletion, entity color modification and entity layer modification over the CAD graph entity can be finely controlled, and the non-destructiveness of 99.9 percent during display on a display and printing can be ensured.

Description

technical field [0001] The invention relates to the technical field of control of CAD graphic entities, in particular to a system and method for controlling the authority of CAD graphic entities. Background technique [0002] At present, most of the AutoCAD graphics files sent out are controlled for the entire file, such as controlling its reading or writing. The specific method is to package an AutoCAD graphic file with the encrypted control module into an executable exe file. When the user opens the executable file, the control module will be automatically and secretly installed in the system, and the The AutoCAD graphics file is released, and then the AutoCAD software is called to open it. At this time, the file is in a controllable environment, and the control module performs corresponding control according to the permission settings when packaging, such as valid period control, open times control, Read and write control, etc. The disadvantage of using the above method...

AI Technical Summary

Problems solved by technology

The disadvantage of using the above method is that it can only control the entire file, and cannot finely control a certain graphic entity in the AutoCAD graphic file

The reason for this is that the smallest unit that this method can handle is only the file

Images