Computer aided design (CAD) models reflect design goals, intentions, and functions so that they are the key intellectual properties of companies. In a Cloud manufacturing environment, how to effectively protect the sensitive feature information for a model owner while enabling the owner to flexibly share the rest of the CAD model with collaborators is an important yet challenging research issue. In this paper, an innovative partial encryption approach, which is able to represent a CAD model into the granularity of sharing information in order to address various collaboration scenarios and customized requirements from the model owner and collaborators, is presented. The approach is composed of a customized encryption algorithm for a CAD model, a key based customized authorization algorithm for collaborators to decrypt shared features in the model, and a customized geometric transformation method to support the effective protection model-based visualization of the model for collaboration. With this approach, a CAD model can be flexibly encrypted to realize partial sharing of features and safe protection of the rest of the model according to collaboration requirements. Meanwhile, during encryption and decryption, the CAD model is always manifold no matter which feature is encrypted or decrypted to ensure user friendliness, model validity, and robustness of the approach. A case study is used to verify and illustrate the effectiveness of the approach. This research is a new attempt to design a content-based and customized encryption approach applicable to CAD model-based collaboration in a Cloud manufacturing environment.
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August 2015
Research-Article
Customized Encryption of Computer Aided Design Models for Collaboration in Cloud Manufacturing Environment
Xiantao Cai,
Xiantao Cai
Assistant Professor
School of Computer Science and Technology,
e-mail: caixantao@whu.edu.cn
School of Computer Science and Technology,
Wuhan University
,Wuhan 430072
, China
e-mail: caixantao@whu.edu.cn
Search for other works by this author on:
Weidong Li,
Weidong Li
Professor
Faculty of Engineering and Computing,
e-mail: weidong.li@coventry.ac.uk
Faculty of Engineering and Computing,
Coventry University
,Coventry CV1 5FB
, UK
e-mail: weidong.li@coventry.ac.uk
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Fazhi He,
Fazhi He
Professor
School of Computer Science and Technology,
e-mail: fzhe@whu.edu.cn
School of Computer Science and Technology,
Wuhan University
,Wuhan 430072
, China
e-mail: fzhe@whu.edu.cn
Search for other works by this author on:
Xiaoxia Li
Xiaoxia Li
Faculty of Engineering and Computing,
e-mail: xiaoxia.li@coventry.ac.uk
Coventry University
,Coventry CV1 5FB
, UK
e-mail: xiaoxia.li@coventry.ac.uk
Search for other works by this author on:
Xiantao Cai
Assistant Professor
School of Computer Science and Technology,
e-mail: caixantao@whu.edu.cn
School of Computer Science and Technology,
Wuhan University
,Wuhan 430072
, China
e-mail: caixantao@whu.edu.cn
Weidong Li
Professor
Faculty of Engineering and Computing,
e-mail: weidong.li@coventry.ac.uk
Faculty of Engineering and Computing,
Coventry University
,Coventry CV1 5FB
, UK
e-mail: weidong.li@coventry.ac.uk
Fazhi He
Professor
School of Computer Science and Technology,
e-mail: fzhe@whu.edu.cn
School of Computer Science and Technology,
Wuhan University
,Wuhan 430072
, China
e-mail: fzhe@whu.edu.cn
Xiaoxia Li
Faculty of Engineering and Computing,
e-mail: xiaoxia.li@coventry.ac.uk
Coventry University
,Coventry CV1 5FB
, UK
e-mail: xiaoxia.li@coventry.ac.uk
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received October 28, 2014; final manuscript received April 28, 2015; published online July 8, 2015. Assoc. Editor: Lihui Wang.
J. Manuf. Sci. Eng. Aug 2015, 137(4): 040905 (10 pages)
Published Online: August 1, 2015
Article history
Received:
October 28, 2014
Revision Received:
April 28, 2015
Online:
July 8, 2015
Citation
Cai, X., Li, W., He, F., and Li, X. (August 1, 2015). "Customized Encryption of Computer Aided Design Models for Collaboration in Cloud Manufacturing Environment." ASME. J. Manuf. Sci. Eng. August 2015; 137(4): 040905. https://doi.org/10.1115/1.4030592
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