一种基于混沌的软件水印算法框架及实现

针对现有软件水印算法中存在的一些不足,将反逆向工程技术和混沌系统与Easter Egg软件水印的思想相结合,提出了一个基于混沌的软件水印算法框架.该框架通过引入混沌系统,把水印信息散列编码到整个代码当中,以保护全部代码;通过引入反逆向工程技术来抵抗逆向工程攻击,算法框架与软硬件平台无关.在i386体系结构Windows平台下实现了该算法框架,并以该实现为例分析了水印的鲁棒性,讨论了水印的嵌入对程序性能的影响.分析表明,该算法可以有效地抵抗各种语义保持变换攻击,对逆向工程攻击具有较好的抵抗性,鲁棒性较高.

A Chaos-Based Framework and Implementation for Software Watermarking Algorithm

A chaos-based software watermarking framework against several limitations of the existing watermark algorithms is proposed in this paper, in which the anti-reverse engineering technique and chaotic system are combined with the idea of Easter Egg software watermarking. With chaotic system, global protection for the program is provided by dispersing watermark over all the whole code of the program; With the anti-reverse engineering technique, the resistance against reverse engineering is improved. The framework can be implemented under various software and hardware platforms. In this paper, the watermarking framework is implemented under the Intel i386 architecture and the Windows operating system. Then the implementation is taken as an example to analyze the robustness of the watermark framework and the performance degradation of the watermarked program. The results indicate that the watermarking can resist various semantics-preserving transformation attacks and be good tolerance for reverse engineering attacks. The robustness of the algorithm is at a high quality.