A kind of encryption and decryption method of fbx format three-dimensional model

Abstract

The invention discloses an encryption and decryption method of an FBX format three-dimensional model, particularly relates to the field of three-dimensional models, and comprises an encryption moduleand a decryption module, 1) the encryption method of the encryption module comprises the following steps: S101, reading an original FBX format three-dimensional model file; and S102, inputting a section of text key by a copyright owner, and generating four sections of 32-bit hash values through MD5 encryption. The invention provides a simple, easy-to-use and high-efficiency encryption and decryption method for an FBX format three-dimensional model. Encryption and decryption method are adopted, the adding position of the random data of the model file is calculated through the preset secret key,the adding position of the random data of the model file can be adjusted by changing the secret key, and therefore the advantage that the decryption method is high in efficiency is kept, meanwhile, the safety of the algorithm is improved, the algorithm is not prone to being cracked, and the complexity of the three-dimensional model decryption algorithm is low.

Description

Technical field [0001] Technical Field The present invention relates to a three-dimensional model, and more particularly, the present invention relates to a method of encryption and decryption FBX 3D model format. Background technique [0002] FBX file format is a three-dimensional model of a three-dimensional model file now widely used. FBX 3D model format file itself is a non-protected state, when these files are placed on a network or with the system installed on the client PC, the users will be able to read and modify any of these three-dimensional model file, or the three-dimensional model with these in other applications, this way the lack of adequate protection for the results of the work of the designer or asset owners. [0003] Conventional protection method is generally three-dimensional model by converting the coordinates of the object three-dimensional model of the surface element, so that unauthorized users can not obtain the original three-dimensional object correct...

AI Technical Summary

Problems solved by technology

[0003] The existing 3D model protection methods usually transform the point coordinates of the object surface elements in the 3D model, so that unauthorized users cannot correctly obtain the original 3D objects

This method usually requires complex matrix transformation calculations to restore the model after the model is loaded. For large-scale 3D models, the decryption method takes a long time and has a great impact on system performance.

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