Parametric Encryption of CAD models in Cloud manufacturing environment

In a Cloud-enabled collaborative environment, how to ensure that the shared sensitive information of CAD models is effectively protected is one of the key challenges. In this paper, a parametric encryption method for CAD models in a Cloud manufacturing environment is presented. The method contains a Self-adaptive Encryption Algorithm and an Entire Encryption Algorithm. Based on the Self-adaptive Encryption Algorithm, the sensitive part of a CAD model is encrypted parametrically and adaptively, guaranteeing the security and validity of accessing the different parts of the CAD model when it being shared by its co-designer. Based on the Entire Encryption Algorithm, the whole CAD model is encrypted entirely in a large scale to prevent potential information leakage to unauthorized users when the model is uploaded to the Cloud.