面向信息安全的二维CAD工程图复杂度研究

Research on the Complexity of Two Dimensional Engineering Graphics for Information Security

针对二维CAD工程图的特点,研究了二维CAD工程图复杂度的度量方法。提出了实体复杂度、约束复杂度以及特征复杂度的定义,并分别给出了3种复杂度的计算方法。分析与讨论表明,上述3种复杂度能有效地对二维CAD工程图的复杂度进行度量。最后对二维CAD工程图复杂度在工程图内容加密以及数字水印中的应用进行了探讨。

Based on the characteristics of two dimensional CAD engineering graphics,the complexity of two dimensional CAD engineering graphic was proposed.The definitions of entity complexity,restriction complexity,and characteristic complexity were given,and their calculation methods were presented,respectively.Analysis and discussion illustrate the proposed method can effectively evaluate the complexity of two dimensional CAD engineering graphics.Finally,the application of the complexity of two dimensional engineering graphics in encryption and watermarking was discussed.