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Encryption method of CAD model

An encryption method and a technology for designing models, which are applied in encryption devices with shift registers/memory, calculations, computer security devices, etc., can solve the problems of model encryption, low encryption security, etc., and achieve good encryption effects Effect

Inactive Publication Date: 2017-10-10
长沙善道新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of encryption method of CAD design model, to solve the technical problem that the security of encryption in existing CAD model encryption method is not high and can't carry out encryption to the whole model

Method used

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  • Encryption method of CAD model
  • Encryption method of CAD model

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Embodiment Construction

[0031] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0032] Such as figure 1 As shown in the figure, the encryption effect diagram of the prior art is shown. This secret method only encrypts the key structural part on the component, but does not encrypt the entire component, so that the general structure of the entire component is still displayed in plain text. out, the cracker can decrypt according to the general structural model and application scenarios, and the encrypted part will also be cracked, so that the encryption method has the characteristics of low security and cannot encrypt the entire component, thus making Give crackers a greater chance of cracking.

[0033] A kind of encryption method of CAD design model, such as figure 2 , 3 As shown, it includes a secret key storage module and an encry...

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Abstract

The invention provides an encryption method of a CAD design model. The encryption method includes a secret key storage module and an encryption module, wherein the secret key storage module is connected with the encryption module and is used for storing a secret key; and the encryption module is used for encryption processing. The encryption method provided by the invention is to encrypt a whole CAD model, thereby enabling an encryption effect to be better, and after others obtain an encryption model, the designed model cannot be restored as well, thereby enabling a more practical effect to be achieved than an existing CAD encryption method; and at the same time, in a CAD model encryption process, random data points are obtained for the whole CAD model, and the encrypted secret key uses a characteristic value of an iris, so that the CAD model is encrypted more safely and the whole CAD model can be encrypted.

Description

technical field [0001] The invention relates to the field of encryption, in particular to an encryption method of a CAD design model. Background technique [0002] CAD data is not only the main data source for geospatial information acquisition, but also the result of domestic enterprises and design units using AutoCAD for auxiliary design. In recent years, with the rapid development of the digital and network era, the storage, transmission, and replication of CAD data have become very convenient and fast. Illegal copying and duplication of CAD data will not only cause huge economic losses to the owners of CAD data, but also endanger national security and national defense security. [0003] The access control method in the early collaborative product design environment is to directly manage the sketched CAD model data as ordinary files, and mainly control the access of the sketched CAD model files through the user's authority level. Considering that the sketched CAD model ...

Claims

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Application Information

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IPC IPC(8): H04L9/32H04L9/08H04L9/06G06F21/62
CPCG06F21/6209H04L9/06H04L9/0643H04L9/0894H04L9/3231
Inventor 吴苗
Owner 长沙善道新材料科技有限公司
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