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Research and Design of Zero-watermarking Scheme Based on Obfuscation

Author: XuGuangXing
Tutor: ZhongZuo
School: Wuhan University of Technology
Course: Computer Science and Technology
Keywords: Code obfuscation Software watermarking Zero-watermarking Software Security Reverse Engineering
CLC: TP309.7
Type: Master's thesis
Year: 2011
Downloads: 62
Quote: 1
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Abstract


Development of the computer industry has gradually turned our society to an information, intelligence, pluralistic society, whether it is live, work and scientific research are permeated with the computer. Precisely because of the advent of the computer, we live and work become more convenient and rich. Computer software industry as the computer field is an important part of its status and importance is self-evident. A major driving force in the development of the computer industry is to progress from the software industry. However, in today's society, the software industry is facing a variety of threats and obstacles. For example, software piracy, malicious code tampering and access to the confidential data in the software, these illegal acts, violation of software copyright issues, but the main hazard is a serious blow to the software developers to develop more practical power of the software. Therefore, in order to ensure the normal development of the computer software industry, software security technology has important practical significance. Software security technology is divided into two, one is beforehand protection technology, such as encryption algorithm, code obfuscation, dongle, etc., is another subsequent protection technology, for example, software watermarking, digital watermark technology. This article will ex ante and ex post facto technology combined based code obfuscation software watermark protection technology. This article first proposed three software watermark threat model, and at this stage of software protection technology. According to the characteristics of code obfuscation related design principles introduced several commonly used code obfuscation, code obfuscation methods for the design and implementation of features carried out a detailed analysis and explanation. In this paper, the design framework for software watermarking conducted in-depth analysis, and on this basis, the introduction of zero-watermark design ideas. Based on the code obfuscation features and the design idea of ??zero-watermarking is proposed based on the the code obfuscation zero watermark design, the core content sucked encoded watermark information embedded by code obfuscation process to the body of the software without any increase in redundancy the watermark code based on the watermark information is embedded in the software, thereby improving the security of the software watermarking. To illustrate the confusion software watermarking scheme is feasible, this paper proposes a simple prototype system, through the system tested by the system and other watermarking method for anti-attack capability contrast, from the experimental point of view to prove that the code-based The software watermarking feasibility confusion. Article from the correctness of this concealment and robustness of perspective, interpretation and analysis, which described the theoretical level.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Encryption and decryption
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